SP-80 - Control Head Only For boaters who know where they're going. SP-80 takes you where you want to be--effortlessly. Its smart, precise piloting gives you the extra hand on deck you've always needed. And the operation is a snap: Simply set the course and the SP-80 takes the controls, piloting you to your destination with ease and precision. So bait the lines or simply enjoy the sunset. With the SI-TEX SP-80 Autopilot you're right on course. Hands free, and ready to go. Features: Designed for Outboard, Inboard, and Sterndrive vessels with Hydraulic or Mechanical steering systems. Automatically pilots to your next waypoint using built-in NMEA 0183 Loran/GPS interface. Waterproof control head easily installs flush or surface mounted. System can be expanded by adding fully functional second-station option with the SI-TEX SP-70 Handheld Control Unit. Bold, backlit display with ten levels of brightness for clear reading in any light. Accurate digital displays of rudder angle and operating mode in use, constantly giving you up-to-the minute operating status. Automatic Sea State and Trim controls and 10 selectable levels of rudder sensitivity with high and low speed settings for smooth, precise steering. Rudder feedback verifies autopilot's commands. Ghost Rudder backup allows autopilot to use memory of rudder movements to calculate new movements in event of rudder feedback failure. Heading Output feature allows you to stabilize radar display. Built-in diagnostics and self tests, plus visual and audible alarms. Power Steering mode offers convenient push-button steering. Stand-By mode for manual steering situations. Optional analog Rudder Angle Indicator for easy, at-a-glance reading of exact rudder position. Works with solenoid valves also.

SP-80 Fixed-Mount Autopilot System Cruise Control at Sea. The SP-80 takes the helm and sets you free. For boater who know where they're going. SP-80 takes you where you want to be--effortlessly. It's smart, precise piloting gives you the extra hand on deck you've always needed. And the operation is a snap: Simply set the course and the SP-80 takes the controls, piloting you to your destination with ease and precision. So bait the lines or simply enjoy the sunset. With the SI-TEX SP-80 Autopilot you're right on course. Hands free, and ready to really let you go. Designed for inboard outboard and sterndrive vessels with either hydraulic or quadrant steering systems. Automatically pilots to your next waypoint using built-in NMEA 0183 Loran/GPS interface. Waterproof control head easily installs flush or surface mounted. System can be expanded by adding fully functional second-station option with the SI-TEX SP-70 Handheld Control Unit. Bold, backlit display with ten levels of brightness for clear reading in any light. Accurate digital displays of rudder angle and operating mode in use, constantly giving you up-to-the minute operating status. Automatic Sea State and Trim controls and ten selectable levels of rudder sensitivity with high and low speed settings for smooth, precise steering. Rudder feedback verifies autopilot's commands. Ghost Rudder backup allows autopilot to use memory of rudder movements to calculate new movements in event of rudder feedback failure. Heading Output feature allows you to stabilize radar display. Built-in diagnostics and self tests, plus visual and audible alarms. Power Steering mode offers convenient push-button steering. Stand-By mode for manual steering situations. Optional analog Rudder Angle Indicator for easy, at-a-glance reading of exact rudder position. Works with solenoid valves also. Old Part# SP-80RLP

Includes Type "T" Mechanical Dashboard Drive w/ Built-in Rudder Feedback SP-80 Fixed-Mount Autopilot System Cruise Control at Sea. The SP-80 takes the helm and sets you free. For boaters who know where they're going. SP-80 takes you where you want to be--effortlessly. It's smart, precise piloting gives you the extra hand on deck you've always needed. And the operation is a snap: Simply set the course and the SP-80 takes the controls, piloting you to your destination with ease and precision. So bait the lines or simply enjoy the sunset. With the SI-TEX SP-80 Autopilot you're right on course. Hands free, and ready to really let you go. Designed for inboard, outboard and sterndrive vessels with either hydraulic or quadrant steering systems. Automatically pilots to your next waypoint using built-in NMEA 0183 Loran/GPS interface. Waterproof control head easily installs flush or surface mounted. System can be expanded by adding fully functional second-station option with the SI-TEX SP-70 Handheld Control Unit. Bold, backlit display with ten levels of brightness for clear reading in any light. Accurate digital displays of rudder angle and operating mode in use, constantly giving you up-to-the minute operating status. Automatic Sea State and Trim controls and ten selectable levels of rudder sensitivity with high and low speed settings for smooth, precise steering. Rudder feedback verifies autopilot's commands. Ghost Rudder backup allows autopilot to use memory of rudder movements to calculate new movements in event of rudder feedback failure. Heading Output feature allows you to stabilize radar display. Built-in diagnostics and self tests, plus visual and audible alarms. Power Steering mode offers convenient push-button steering. Stand-By mode for manual steering situations. Optional analog Rudder Angle Indicator for easy, at-a-glance reading of exact rudder position. Works with solenoid valves also. Old Part # SP-80MT

Includes Type "S" Mechanical Dashboard Drive w/ Built-in Rudder Feedback SP-80 Fixed-Mount Autopilot System Cruise Control at Sea. The SP-80 takes the helm and sets you free. For boaters who know where they're going. SP-80 takes you where you want to be--effortlessly. It's smart, precise piloting gives you the extra hand on deck you've always needed. And the operation is a snap: Simply set the course and the SP-80 takes the controls, piloting you to your destination with ease and precision. So bait the lines or simply enjoy the sunset. With the SI-TEX SP-80 Autopilot you're right on course. Hands free, and ready to really let you go. Designed for inboard, outboard and sterndrive vessels with either hydraulic or quadrant steering systems. Automatically pilots to your next waypoint using built-in NMEA 0183 Loran/GPS interface. Waterproof control head easily installs flush or surface mounted. System can be expanded by adding fully functional second-station option with the SI-TEX SP-70 Handheld Control Unit. Bold, backlit display with ten levels of brightness for clear reading in any light. Accurate digital displays of rudder angle and operating mode in use, constantly giving you up-to-the minute operating status. Automatic Sea State and Trim controls and ten selectable levels of rudder sensitivity with high and low speed settings for smooth, precise steering. Rudder feedback verifies autopilot's commands. Ghost Rudder backup allows autopilot to use memory of rudder movements to calculate new movements in event of rudder feedback failure. Heading Output feature allows you to stabilize radar display. Built-in diagnostics and self tests, plus visual and audible alarms. Power Steering mode offers convenient push-button steering. Stand-By mode for manual steering situations. Optional analog Rudder Angle Indicator for easy, at-a-glance reading of exact rudder position. Works with solenoid valves also. Old Part # SP-80MS

SP-80 Fixed-Mount Autopilot System Cruise Control at Sea. The SP-80 takes the helm and sets you free. For boaters who know where they're going. SP-80 takes you where you want to be--effortlessly. It's smart, precise piloting gives you the extra hand on deck you've always needed. And the operation is a snap: Simply set the course and the SP-80 takes the controls, piloting you to your destination with ease and precision. So bait the lines or simply enjoy the sunset. With the SI-TEX SP-80 Autopilot you're right on course. Hands free, and ready to really let you go. Designed for inboard, outboard and sterndrive vessels with either hydraulic or quadrant steering systems. Automatically pilots to your next waypoint using built-in NMEA 0183 Loran/GPS interface. Waterproof control head easily installs flush or surface mounted. System can be expanded by adding fully functional second-station option with the SI-TEX SP-70 Handheld Control Unit. Bold, backlit display with ten levels of brightness for clear reading in any light. Accurate digital displays of rudder angle and operating mode in use, constantly giving you up-to-the minute operating status. Automatic Sea State and Trim controls and ten selectable levels of rudder sensitivity with high and low speed settings for smooth, precise steering. Rudder feedback verifies autopilot's commands. Ghost Rudder backup allows autopilot to use memory of rudder movements to calculate new movements in event of rudder feedback failure. Heading Output feature allows you to stabilize radar display. Built-in diagnostics and self tests, plus visual and audible alarms. Power Steering mode offers convenient push-button steering. Stand-By mode for manual steering situations. Optional analog Rudder Angle Indicator for easy, at-a-glance reading of exact rudder position. Works with solenoid valves also. Old Part # SP-80R

SP-80 Autopilot Second Station Kit Full Function Remote 2nd Station for SP-80 Autopilots Includes 25' of Cable Permanent Mount Features: Automatically pilots to your next waypoint using built-in NMEA 0183 Loran/GPS interface Waterproof control head easily installs flush or surface mounted Bold, backlit display with ten levels of brightness for clear reading in any light Accurate digital displays of rudder angle and operating mode in use, constantly giving you up-to-the minute operating status Automatic Sea State and Trim controls and 10 selectable levels of rudder sensitivity with high and low speed settings for smooth, precise steering Rudder feedback verifies autopilot's commands Ghost Rudder backup allows autopilot to use memory of rudder movements to calculate new movements in event of rudder feedback failure Heading Output feature allows you to stabilize radar display Built-in diagnostics and self tests, plus visual and audible alarms Power Steering mode offers convenient push-button steering. Stand-By mode for manual steering situations Optional analog Rudder Angle Indicator for easy, at-a-glance reading of exact rudder position Includes 25' of cable

  The SI-TEX NavStar 10 and NavStar 12 MFDs give you everything you need - precision chartplotting, powerful dual-frequency sonar, professional-grade 4kW radar, global satellite communications and Bluetooth entertainment capabilities - all in one rugged and compact system with Hybrid Touchscreen Control.  For a limited time, these state-of-the-art units give you even more - up to $400 cash back in your pocket! *Offer valid now until April 30th, 2019     Just purchase a NavStar 10 or NavStar 12 during the promotional period and submit via mail-in rebate. What better way to start the boating season than with a new SI-TEX NavStar MFD on your helm and some extra money you can use for fuel, bait and gear! *Don't wait! This promotion runs only from January 1st, 2019 to April 30th, 2019.         Specials    Closeouts   Remanufactured    Rebates  

  The SI-TEX NavStar 10 and NavStar 12 MFDs give you everything you need - precision chartplotting, powerful dual-frequency sonar, professional-grade 4kW radar, global satellite communications and Bluetooth entertainment capabilities - all in one rugged and compact system with Hybrid Touchscreen Control.  For a limited time, these state-of-the-art units give you even more - up to $400 cash back in your pocket! *Offer valid now until April 30th, 2019     Just purchase a NavStar 10 or NavStar 12 during the promotional period and submit via mail-in rebate. What better way to start the boating season than with a new SI-TEX NavStar MFD on your helm and some extra money you can use for fuel, bait and gear! *Don't wait! This promotion runs only from January 1st, 2019 to April 30th, 2019.         Specials    Closeouts   Remanufactured    Rebates  

SP-120 Color System with RFB & Remote Mechanical Drive Inboard Engines Features: The SI-TEX SP-120C is an Autopilot designed for hydraulic steering, mechanical steering, & solenoid control Does not require a separate junction box, everything simply connects to the rear of the control head This Autopilot is ideal for small vessels under 38' The Autopilot can operate in either Virtual Rudder feedback mode in the case of Outboards or a separate Rudder Feedback unit can be added for inboard vessels SP-120C displays actual Compass heading & Selected Heading, along with Rudder Angle Displays simultaneously Compact 4.1” x 4.1” Splash proof Control head with large easy to read Color LCD LCD Display Extremely easy to select your desired headings, operate, and setup, with new user friendly software High performance 9 Axis Rate Gyro Compass provides the autopilot with excellent steering response Autopilot uses Input of GPS Speed over ground (SOG) and Course over ground (COG) to enhance performance NMEA-0183 GPS Interface accepts inputs from most Chart plotters for steering to waypoints and routes NMEA-0183 Output of Compass heading at 10kHz for interface to MFD’s with Chart/Radar Overlay Autopilot Steering Modes: Manual (Power Steer) Auto (Pilot maintains selected Magnetic course) GPS (Steers to Waypoint or Routes when Interfaced with GPS) Wind (Steers to wind when interfaced to wind sensor for Sailboat installations) Protected by 2 Year SI-TEX Warranty Specifications: Waterproof: IPX6 Control Head Dimensions: 110 mm L x 110 mm W Voltage supply VOLTAGE: 12/24 Volts DC LCD Color LCD Display Constant Compass Heading Indicator and Rudder Angle Indicator Current consumption: 0.5 amps at 12VDC in standby mode Maximum Drive Output Current 15 Amps Operating temperature: -10ºC to +55ºC Data Connections: NMEA-0183 GPS Input, NMEA-0183 10kHz Compass heading Output Course Detection <1 Degree Package Includes: SI-TEX SP-120C Color LCD Autopilot Control Head NMEA Interface Cables 9 Axis Electronic Rate Gyro Compass Control Head Sun cover Product manual Mounting Screws

SP-120 Color System with Rudder Feedback without Drive Unit Features: The SI-TEX SP-120C is an Autopilot designed for hydraulic steering, mechanical steering, & solenoid control Does not require a separate junction box, everything simply connects to the rear of the control head This Autopilot is ideal for small vessels under 38' The Autopilot can operate in either Virtual Rudder feedback mode in the case of Outboards or a separate Rudder Feedback unit can be added for inboard vessels SP-120C displays actual Compass heading & Selected Heading, along with Rudder Angle Displays simultaneously Compact 4.1” x 4.1” Splash proof Control head with large easy to read Color LCD LCD Display Extremely easy to select your desired headings, operate, and setup, with new user friendly software High performance 9 Axis Rate Gyro Compass provides the autopilot with excellent steering response Autopilot uses Input of GPS Speed over ground (SOG) and Course over ground (COG) to enhance performance NMEA-0183 GPS Interface accepts inputs from most Chart plotters for steering to waypoints and routes NMEA-0183 Output of Compass heading at 10kHz for interface to MFD’s with Chart/Radar Overlay Autopilot Steering Modes: Manual (Power Steer) Auto (Pilot maintains selected Magnetic course) GPS (Steers to Waypoint or Routes when Interfaced with GPS) Wind (Steers to wind when interfaced to wind sensor for Sailboat installations) Protected by 2 Year SI-TEX Warranty Specifications: Waterproof: IPX6 Control Head Dimensions: 110 mm L x 110 mm W Voltage supply VOLTAGE: 12/24 Volts DC LCD Color LCD Display Constant Compass Heading Indicator and Rudder Angle Indicator Current consumption: 0.5 amps at 12VDC in standby mode Maximum Drive Output Current 15 Amps Operating temperature: -10ºC to +55ºC Data Connections: NMEA-0183 GPS Input, NMEA-0183 10kHz Compass heading Output Course Detection <1 Degree Package Includes: SI-TEX SP-120C Color LCD Autopilot Control Head NMEA Interface Cables 9 Axis Electronic Rate Gyro Compass Control Head Sun cover Product manual Mounting Screws

SP-120 Color System with Rudder Feedback & 18CI Pump Features: The SI-TEX SP-120C is an Autopilot designed for hydraulic steering, mechanical steering, & solenoid control Does not require a separate junction box, everything simply connects to the rear of the control head This Autopilot is ideal for small vessels under 38' The Autopilot can operate in either Virtual Rudder feedback mode in the case of Outboards or a separate Rudder Feedback unit can be added for inboard vessels SP-120C displays actual Compass heading & Selected Heading, along with Rudder Angle Displays simultaneously Compact 4.1” x 4.1” Splash proof Control head with large easy to read Color LCD LCD Display Extremely easy to select your desired headings, operate, and setup, with new user friendly software High performance 9 Axis Rate Gyro Compass provides the autopilot with excellent steering response Autopilot uses Input of GPS Speed over ground (SOG) and Course over ground (COG) to enhance performance NMEA-0183 GPS Interface accepts inputs from most Chart plotters for steering to waypoints and routes NMEA-0183 Output of Compass heading at 10kHz for interface to MFD’s with Chart/Radar Overlay Autopilot Steering Modes: Manual (Power Steer) Auto (Pilot maintains selected Magnetic course) GPS (Steers to Waypoint or Routes when Interfaced with GPS) Wind (Steers to wind when interfaced to wind sensor for Sailboat installations) Protected by 2 Year SI-TEX Warranty Specifications: Waterproof: IPX6 Control Head Dimensions: 110 mm L x 110 mm W Voltage supply VOLTAGE: 12/24 Volts DC LCD Color LCD Display Constant Compass Heading Indicator and Rudder Angle Indicator Current consumption: 0.5 amps at 12VDC in standby mode Maximum Drive Output Current 15 Amps Operating temperature: -10ºC to +55ºC Data Connections: NMEA-0183 GPS Input, NMEA-0183 10kHz Compass heading Output Course Detection <1 Degree Package Includes: SI-TEX SP-120C Color LCD Autopilot Control Head NMEA Interface Cables 9 Axis Electronic Rate Gyro Compass Control Head Sun cover Product manual Mounting Screws

SP-120 Color System with Rudder Feedback & Type "S" Mechanical Dash Drive Features: The SI-TEX SP-120C is an Autopilot designed for hydraulic steering, mechanical steering, & solenoid control Does not require a separate junction box, everything simply connects to the rear of the control head This Autopilot is ideal for small vessels under 38' The Autopilot can operate in either Virtual Rudder feedback mode in the case of Outboards or a separate Rudder Feedback unit can be added for inboard vessels SP-120C displays actual Compass heading & Selected Heading, along with Rudder Angle Displays simultaneously Compact 4.1” x 4.1” Splash proof Control head with large easy to read Color LCD LCD Display Extremely easy to select your desired headings, operate, and setup, with new user friendly software High performance 9 Axis Rate Gyro Compass provides the autopilot with excellent steering response Autopilot uses Input of GPS Speed over ground (SOG) and Course over ground (COG) to enhance performance NMEA-0183 GPS Interface accepts inputs from most Chart plotters for steering to waypoints and routes NMEA-0183 Output of Compass heading at 10kHz for interface to MFD’s with Chart/Radar Overlay Autopilot Steering Modes: Manual (Power Steer) Auto (Pilot maintains selected Magnetic course) GPS (Steers to Waypoint or Routes when Interfaced with GPS) Wind (Steers to wind when interfaced to wind sensor for Sailboat installations) Protected by 2 Year SI-TEX Warranty Specifications: Waterproof: IPX6 Control Head Dimensions: 110 mm L x 110 mm W Voltage supply VOLTAGE: 12/24 Volts DC LCD Color LCD Display Constant Compass Heading Indicator and Rudder Angle Indicator Current consumption: 0.5 amps at 12VDC in standby mode Maximum Drive Output Current 15 Amps Operating temperature: -10ºC to +55ºC Data Connections: NMEA-0183 GPS Input, NMEA-0183 10kHz Compass heading Output Course Detection <1 Degree Package Includes: SI-TEX SP-120C Color LCD Autopilot Control Head NMEA Interface Cables 9 Axis Electronic Rate Gyro Compass Control Head Sun cover Product manual Mounting Screws

SP-120 Color System with Rudder Feedback & Type "T" Mechanical Dash Drive Features: The SI-TEX SP-120C is an Autopilot designed for hydraulic steering, mechanical steering, & solenoid control Does not require a separate junction box, everything simply connects to the rear of the control head This Autopilot is ideal for small vessels under 38' The Autopilot can operate in either Virtual Rudder feedback mode in the case of Outboards or a separate Rudder Feedback unit can be added for inboard vessels SP-120C displays actual Compass heading & Selected Heading, along with Rudder Angle Displays simultaneously Compact 4.1” x 4.1” Splash proof Control head with large easy to read Color LCD LCD Display Extremely easy to select your desired headings, operate, and setup, with new user friendly software High performance 9 Axis Rate Gyro Compass provides the autopilot with excellent steering response Autopilot uses Input of GPS Speed over ground (SOG) and Course over ground (COG) to enhance performance NMEA-0183 GPS Interface accepts inputs from most Chart plotters for steering to waypoints and routes NMEA-0183 Output of Compass heading at 10kHz for interface to MFD’s with Chart/Radar Overlay Autopilot Steering Modes: Manual (Power Steer) Auto (Pilot maintains selected Magnetic course) GPS (Steers to Waypoint or Routes when Interfaced with GPS) Wind (Steers to wind when interfaced to wind sensor for Sailboat installations) Protected by 2 Year SI-TEX Warranty Specifications: Waterproof: IPX6 Control Head Dimensions: 110 mm L x 110 mm W Voltage supply VOLTAGE: 12/24 Volts DC LCD Color LCD Display Constant Compass Heading Indicator and Rudder Angle Indicator Current consumption: 0.5 amps at 12VDC in standby mode Maximum Drive Output Current 15 Amps Operating temperature: -10ºC to +55ºC Data Connections: NMEA-0183 GPS Input, NMEA-0183 10kHz Compass heading Output Course Detection <1 Degree Package Includes: SI-TEX SP-120C Color LCD Autopilot Control Head NMEA Interface Cables 9 Axis Electronic Rate Gyro Compass Control Head Sun cover Product manual Mounting Screws

SP-120 Color System with RFB & Remote Mechanical Drive 1994+ Mercury I/O, Volvo Gas Features: The SI-TEX SP-120C is an Autopilot designed for hydraulic steering, mechanical steering, & solenoid control Does not require a separate junction box, everything simply connects to the rear of the control head This Autopilot is ideal for small vessels under 38' The Autopilot can operate in either Virtual Rudder feedback mode in the case of Outboards or a separate Rudder Feedback unit can be added for inboard vessels SP-120C displays actual Compass heading & Selected Heading, along with Rudder Angle Displays simultaneously Compact 4.1” x 4.1” Splash proof Control head with large easy to read Color LCD LCD Display Extremely easy to select your desired headings, operate, and setup, with new user friendly software High performance 9 Axis Rate Gyro Compass provides the autopilot with excellent steering response Autopilot uses Input of GPS Speed over ground (SOG) and Course over ground (COG) to enhance performance NMEA-0183 GPS Interface accepts inputs from most Chart plotters for steering to waypoints and routes NMEA-0183 Output of Compass heading at 10kHz for interface to MFD’s with Chart/Radar Overlay Autopilot Steering Modes: Manual (Power Steer) Auto (Pilot maintains selected Magnetic course) GPS (Steers to Waypoint or Routes when Interfaced with GPS) Wind (Steers to wind when interfaced to wind sensor for Sailboat installations) Protected by 2 Year SI-TEX Warranty Specifications: Waterproof: IPX6 Control Head Dimensions: 110 mm L x 110 mm W Voltage supply VOLTAGE: 12/24 Volts DC LCD Color LCD Display Constant Compass Heading Indicator and Rudder Angle Indicator Current consumption: 0.5 amps at 12VDC in standby mode Maximum Drive Output Current 15 Amps Operating temperature: -10ºC to +55ºC Data Connections: NMEA-0183 GPS Input, NMEA-0183 10kHz Compass heading Output Course Detection <1 Degree Package Includes: SI-TEX SP-120C Color LCD Autopilot Control Head NMEA Interface Cables 9 Axis Electronic Rate Gyro Compass Control Head Sun cover Product manual Mounting Screws

SP-120 Color System with RFB & Remote Mechanical Drive 1983-93 Mercury I/O, Volvo Diesel Features: The SI-TEX SP-120C is an Autopilot designed for hydraulic steering, mechanical steering, & solenoid control Does not require a separate junction box, everything simply connects to the rear of the control head This Autopilot is ideal for small vessels under 38' The Autopilot can operate in either Virtual Rudder feedback mode in the case of Outboards or a separate Rudder Feedback unit can be added for inboard vessels SP-120C displays actual Compass heading & Selected Heading, along with Rudder Angle Displays simultaneously Compact 4.1” x 4.1” Splash proof Control head with large easy to read Color LCD LCD Display Extremely easy to select your desired headings, operate, and setup, with new user friendly software High performance 9 Axis Rate Gyro Compass provides the autopilot with excellent steering response Autopilot uses Input of GPS Speed over ground (SOG) and Course over ground (COG) to enhance performance NMEA-0183 GPS Interface accepts inputs from most Chart plotters for steering to waypoints and routes NMEA-0183 Output of Compass heading at 10kHz for interface to MFD’s with Chart/Radar Overlay Autopilot Steering Modes: Manual (Power Steer) Auto (Pilot maintains selected Magnetic course) GPS (Steers to Waypoint or Routes when Interfaced with GPS) Wind (Steers to wind when interfaced to wind sensor for Sailboat installations) Protected by 2 Year SI-TEX Warranty Specifications: Waterproof: IPX6 Control Head Dimensions: 110 mm L x 110 mm W Voltage supply VOLTAGE: 12/24 Volts DC LCD Color LCD Display Constant Compass Heading Indicator and Rudder Angle Indicator Current consumption: 0.5 amps at 12VDC in standby mode Maximum Drive Output Current 15 Amps Operating temperature: -10ºC to +55ºC Data Connections: NMEA-0183 GPS Input, NMEA-0183 10kHz Compass heading Output Course Detection <1 Degree Package Includes: SI-TEX SP-120C Color LCD Autopilot Control Head NMEA Interface Cables 9 Axis Electronic Rate Gyro Compass Control Head Sun cover Product manual Mounting Screws