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

Product Description

The ELECTRO HARDWARE S1071-M10-F21-H is a round, female unthreaded circuit board spacer designed to maintain precise standoff distance between a PCB and a mounting surface. Manufactured from Grade 2 steel with a zinc-plated finish meeting ASTM B633 and QQ-S-633 Type 1 standards, this spacer provides reliable corrosion resistance in typical indoor electronic environments. It measures 0.375 inches overall length, 0.375 inches outside diameter, and 0.171 inches inside diameter, sized for a number 8 screw. Electronics technicians, control board service professionals, and OEM assembly teams use this spacer when building or repairing circuit board assemblies in HVAC control systems, industrial panels, and similar equipment.

This spacer is suited for applications where a fixed, non-threaded standoff is required to secure a printed circuit board at a consistent height above a chassis or mounting plate. Its round body shape and inch-system dimensions make it a standard fit for domestic residential and light commercial control board assemblies. The zinc plating adds a layer of protection against oxidation in low-humidity indoor environments, making it appropriate for furnace control boards, air handler boards, and similar electronic subassemblies.

Key Features

• Female unthreaded design accepts a number 8 screw for secure PCB mounting
• Grade 2 steel construction meets ASTM B633 and QQ-S-633 Type 1 standards
• Zinc-plated finish provides corrosion resistance for indoor electronic applications
• Precisely toleranced: length tolerance of -0.005 to 0.005 inches, ID tolerance of 0.000 to 0.010 inches
• Round body shape ensures consistent standoff and stable board seating
• Inch-system dimensions compatible with standard domestic fastener sizing

Compatibility

Designed as a standard OEM-style round circuit board spacer for printed circuit board assemblies requiring a female unthreaded number 8 screw standoff with 0.375-inch overall length and outside diameter.

Installation Notes

Installation is performed by electronics technicians or control board service professionals. Power down and de-energize the equipment completely before removing or installing any circuit board hardware. Use hand tools only when seating the spacer to avoid deforming the unthreaded female bore. Follow applicable local electrical codes and equipment manufacturer guidelines when servicing control boards in HVAC or industrial panel applications.