Electro Hardware S1347-M01-F21-K Circuit Board Spacer

Product Description

The ELECTRO HARDWARE S1347-M01-F21-K is a round, female unthreaded circuit board spacer machined from brass and finished with a zinc plating that meets ASTM B633, QQ-B-626 Comp 22 Type 1 standards. It accepts a 1/4-inch screw, measures 5/16 inches in overall length, and features an inside diameter of 0.257 inches with an outside diameter of 0.500 inches. The zinc-plated brass construction provides corrosion resistance and electrical conductivity suitable for PCB standoff and spacing applications. Electronics assemblers, field service technicians, and panel builders install these spacers during circuit board mounting and enclosure assembly work.

This spacer is suited for use in control panels, electronic enclosures, and circuit board assemblies where a non-threaded female standoff is required to maintain consistent board clearance. The round body shape and inch-measurement sizing make it compatible with standard 1/4-inch fastener hardware commonly found in residential and commercial HVAC control boards, electrical panels, and similar equipment. Its compact 5/16-inch length is appropriate for tight-clearance PCB mounting applications.

Key Features

• Female unthreaded design accepts 1/4-inch screws for secure board standoff mounting
• Brass construction with zinc-plated finish meets ASTM B633 and QQ-B-626 Comp 22 Type 1 standards
• Overall length of 0.3125 inches with a tight length tolerance of -0.005 to 0.005 inches
• Inside diameter of 0.257 inches with a tolerance of 0.000 to 0.010 inches for consistent fit
• Outside diameter of 0.500 inches in a round body profile for stable board support
• Inch measurement system; single-piece packaging suitable for low-quantity service replacement

Compatibility

Designed as an OEM-style replacement or service spacer for circuit board mounting applications requiring a 1/4-inch female unthreaded brass standoff with a 5/16-inch overall length.

Installation Notes

Installation is performed by electronics technicians, panel builders, or qualified HVAC and electrical service professionals. Power down and de-energize the control board or enclosure fully before removing or installing any PCB hardware. Use the appropriately sized screwdriver or socket driver for the 1/4-inch fastener to avoid stripping the spacer bore. Follow applicable NEC or equipment-specific guidelines when working inside energized enclosures.