Electro Hardware S285M07F16C Round Circuit Board Spacer

Product Description

The ELECTRO HARDWARE S285M07F16C is a round, female unthreaded circuit board spacer designed to maintain precise standoff distance between a PCB and a mounting surface or secondary board. Machined from Grade 303 stainless steel to the QQ-S-763 fastener standard, it delivers corrosion resistance and dimensional consistency in demanding environments. The spacer measures 0.125 inches overall length, with a 0.089 inch inside diameter and 0.1875 inch outside diameter, sized for No. 2 screw applications. The bright uncoated finish leaves the base material exposed, suitable where coating contamination or outgassing is a concern. Electronics assemblers and field technicians install this hardware during control board mounting and panel assembly work.

This spacer is used in applications where a No. 2 screw passes through an unthreaded female standoff to secure a circuit board at a fixed height above a chassis or mounting plate. Typical installations include HVAC control boards, electrical panel PCB assemblies, and similar low-voltage electronics mounting scenarios in both residential and light commercial equipment. Its small form factor and stainless steel construction make it well suited for tight board layouts where corrosion resistance or longevity under thermal cycling is required.

Key Features

• Grade 303 stainless steel construction per QQ-S-763 fastener standard
• Female unthreaded body accepts No. 2 screws for straightforward board attachment
• Overall length of 0.125 inches with tight length tolerance of -0.005 to 0.005 inches
• Inside diameter of 0.089 inches with tolerance of 0.000 to 0.010 inches for consistent fit
• Bright uncoated finish — no coatings to introduce contamination in sensitive PCB environments
• Round body shape for compact board layouts with minimal footprint

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 with a 0.125 inch overall length and 0.1875 inch outside diameter.

Installation Notes

Installation is performed by electronics assemblers or qualified technicians working on control board mounting. Always power down and de-energize the equipment before handling circuit boards or fastening hardware. Use appropriately sized No. 2 screws and avoid overtightening, which can crack PCB mounting holes or distort the spacer bore. Follow applicable NEC or equipment manufacturer guidelines for control board reassembly and torque practices.