Electro Hardware S1095-M10-F21-I Circuit Board Spacer

Product Description

The ELECTRO HARDWARE S1095-M10-F21-I is a round, female unthreaded circuit board spacer machined from Grade 2 steel with a zinc-plated finish. It measures 0.75 inches overall length with an outside diameter of 0.375 inches and an inside diameter of 0.194 inches, sized to accept a number 10 screw. This spacer is used to create a fixed standoff gap between a circuit board and a mounting surface, preventing electrical shorts and providing mechanical support. It is installed by electronics technicians, HVAC controls specialists, and electricians working on control board assemblies in commercial and residential equipment.

This spacer fits typical control board mounting applications where a number 10 fastener is used. The female unthreaded design accepts a screw passed through from the board side, holding the board at a consistent standoff height. Common applications include HVAC control boards, industrial enclosures, motor control panels, and other equipment requiring precise board-to-chassis clearance. Its compact outside diameter of 0.375 inches keeps it well-suited for dense board layouts where spacing is limited.

Key Features

• Grade 2 steel construction meets ASTM B633 and QQ-S-633 Type 1 standards for corrosion resistance
• Zinc-plated finish provides protection against oxidation in typical enclosure environments
• Female unthreaded bore accepts a number 10 screw for straightforward board mounting
• Tight length tolerance of -0.005 to 0.005 inches ensures consistent standoff height across multiple mounting points
• Inside diameter tolerance of 0.000 to 0.010 inches maintains proper screw fit without play
• Round body shape with 0.375 inch OD fits standard PCB mounting hole patterns

Compatibility

Designed for use in circuit board assemblies that use number 10 fasteners and require a 0.75 inch standoff with a 0.375 inch outside diameter. Suitable for HVAC control boards, electrical enclosures, and industrial panel assemblies using inch-measurement hardware.

Installation Notes

Installation should be performed by a qualified technician with all power to the equipment shut off and locked out before accessing any control board. Position the spacer between the board and the mounting surface, then pass a number 10 screw through the board and spacer bore. Do not overtighten fasteners, as the unthreaded bore does not engage threads and excess torque may deform the spacer or damage the board. Follow applicable electrical codes and equipment manufacturer guidelines for control board service.