Electro Hardware S325M01F21C Circuit Board Spacer Brass

Product Description

The ELECTRO HARDWARE S325M01F21C is a round, female unthreaded circuit board spacer designed to maintain precise standoff distance between a PCB and a mounting surface. Built from brass with a zinc-plated finish that meets ASTM B633 and QQ-B-626 Comp 22 Type 1 standards, this spacer delivers corrosion resistance and dimensional stability in electronics assembly applications. It measures 0.75 inches overall length, 0.1875 inches outside diameter, and 0.089 inches inside diameter, sized for a No. 2 screw. Electricians, electronics technicians, and control board assemblers working on HVAC, industrial, or commercial equipment use this type of hardware when mounting circuit boards to panels or enclosures.

This spacer is suited for residential and commercial applications where printed circuit boards require secure, non-conductive standoff mounting. Common install scenarios include control board assemblies inside HVAC equipment, electrical enclosures, and industrial control panels. The female unthreaded design accepts a No. 2 screw fastener, allowing the board to be seated at a fixed standoff height without threading directly into the spacer body. Its compact outside diameter of 0.1875 inches makes it appropriate for densely populated board layouts where clearance is limited.

Key Features

• Brass construction with zinc-plated finish meets ASTM B633 and QQ-B-626 Comp 22 Type 1 standards
• Female unthreaded body accepts No. 2 screw fasteners
• 0.75 inches overall length with a tight length tolerance of -0.005 to 0.005 inches
• Inside diameter of 0.089 inches with a tolerance of 0.000 to 0.010 inches for consistent fitment
• Round body profile, 0.1875 inches outside diameter, suited for compact PCB layouts
• Sold individually with a minimum order quantity of 1

Compatibility

Designed as an OEM-style replacement or new-installation spacer for circuit board mounting applications requiring a No. 2 screw, female unthreaded round standoff in brass with zinc finish.

Installation Notes

Installation is typically performed by electronics technicians or licensed electricians during control board assembly or replacement. Always de-energize and lock out the equipment before accessing any control board or electrical enclosure. Use appropriate hand tools sized for No. 2 fasteners and avoid over-tightening, which can distort the unthreaded bore. Follow applicable NEC guidelines when working inside electrical enclosures.