Electro Hardware S1071-M10-F21-J Circuit Board Spacer

Product Description

The ELECTRO HARDWARE S1071-M10-F21-J is a round, female unthreaded circuit board spacer machined from Grade 2 steel with a zinc-plated finish. It measures 0.375 inches overall length (OAL), 0.375 inches outside diameter (OD), and 0.219 inches inside diameter (ID). Designed for use with No. 12 screws, this spacer maintains precise board-to-chassis or board-to-board clearance in electronic assemblies and control panels. The zinc plating meets ASTM B633 and QQ-S-633 Type 1 standards, providing corrosion resistance suited to the controlled environments where circuit boards in HVAC, electrical, and industrial control applications are commonly found. Electricians and controls technicians use these spacers during panel builds and board replacement work.

This spacer is appropriate for residential and light commercial control panel assemblies, PCB mounting applications, and any enclosure where a No. 12 fastener is used to secure a circuit board at a fixed standoff distance. The female unthreaded body accepts a pass-through screw from one side, allowing a mating fastener to clamp the board and spacer stack together without threading into the spacer itself. Typical use cases include HVAC control board mounting, electrical enclosure PCB installations, and OEM equipment repair requiring exact standoff geometry.

Key Features

• Female unthreaded round body accepts No. 12 screws for straightforward pass-through installation
• 0.375 inches OAL provides consistent board standoff spacing with a length tolerance of -0.005 to 0.005 inches
• 0.219 inches ID with an inside diameter tolerance of 0.000 to 0.010 inches for reliable fastener fit
• Grade 2 steel construction with zinc-plated finish meets ASTM B633 and QQ-S-633 Type 1 standards
• Inch-system dimensions for compatibility with standard imperial fastener hardware

Compatibility

Designed as a standard OEM-style circuit board spacer for use with No. 12 screw fasteners in PCB mounting and panel assembly applications where a 0.375 inches standoff height and 0.375 inches OD round body are specified.

Installation Notes

Installation is typically performed by electricians or controls technicians during board mounting or panel assembly. Always de-energize and lock out the equipment before working inside any control enclosure. Ensure the mating screw length accounts for the full spacer stack height to achieve proper clamp load without over-stressing the board. Follow applicable NEC guidelines when working inside electrical panels or control enclosures.