Electro Hardware S285M01F21C Circuit Board Spacer Brass

Product Description

The ELECTRO HARDWARE S285M01F21C is a round, female unthreaded circuit board spacer designed for Number 2 screw applications. It provides a precise standoff between a PCB and a mounting surface or between stacked boards, maintaining consistent spacing and electrical isolation. The spacer measures 0.125 inches overall length with an inside diameter of 0.089 inches and an outside diameter of 0.1875 inches. Constructed from brass with a zinc-plated finish per ASTM B633 and QQ-B-626 Comp 22 Type 1, it delivers corrosion resistance in demanding environments. Electricians, electronics technicians, and HVAC controls technicians use this type of hardware during control board installation and panel assembly work.

This spacer is suited for residential and light commercial applications wherever circuit boards require secure, fixed standoff mounting. Typical install scenarios include HVAC control board assemblies, electrical enclosures, and electronic equipment panels where a Number 2 screw pattern is used. Its compact 3/16-inch outer diameter makes it appropriate for densely populated PCB layouts with limited clearance between components.

Key Features

• Female unthreaded body accepts Number 2 screws for secure two-point board mounting
• Brass construction with zinc-plated finish meets ASTM B633 and QQ-B-626 Comp 22 Type 1 standards
• 0.125 inches overall length with inside diameter tolerance of 0.000 to 0.010 inches for consistent fitment
• Round body profile with 0.1875 inches OD suits tight PCB layouts
• Length tolerance of -0.005 to 0.005 inches ensures dimensional consistency across assemblies

Compatibility

Designed as a standard OEM-style round circuit board spacer for Number 2 screw applications in electronic and electrical panel assemblies requiring a 0.125-inch standoff height.

Installation Notes

Installation is performed by electricians or electronics technicians during board assembly or replacement. Always de-energize the equipment and discharge any stored energy before handling circuit boards or installing fastener hardware. Use appropriately sized Number 2 screws and avoid overtightening, which can crack board substrate or distort the spacer. Follow applicable NEC guidelines when working inside electrical enclosures.