Electro Hardware S1103-M01-F21-G Round Board Spacer Brass

Product Description

The ELECTRO HARDWARE S1103-M01-F21-G is a round, female unthreaded circuit board spacer manufactured from brass and finished with a zinc plating that meets ASTM B633 and QQ-B-626 Comp 22 Type 1 standards. It measures 0.875 inches overall length with an outside diameter of 0.375 inches and an inside diameter of 0.141 inches, sized for a number 6 screw. The zinc-plated finish provides corrosion resistance in light-duty environments. This spacer is installed by electricians, electronics technicians, and HVAC controls technicians when mounting circuit boards to enclosures, panels, or chassis surfaces where a fixed standoff distance is required.

This spacer is suited for residential and light commercial applications where printed circuit boards must be elevated and isolated from a mounting surface. Typical use cases include control board mounting inside HVAC equipment, electrical panels, and industrial enclosures. The female unthreaded bore accepts a number 6 screw passing through the board and into the spacer, maintaining consistent board clearance and preventing contact shorts. Its round body and standardized dimensions make it a common fit in OEM and aftermarket board replacement scenarios.

Key Features

• Female unthreaded design accepts a number 6 screw for straightforward board standoff installation
• Brass construction with zinc-plated finish meeting ASTM B633 and QQ-B-626 Comp 22 Type 1
• Overall length of 0.875 inches with a tight length tolerance of -0.005 to 0.005 inches
• Outside diameter of 0.375 inches and inside diameter of 0.141 inches with a bore tolerance of 0.000 to 0.010 inches
• Round body profile for consistent, predictable fitment on standard PCB mounting layouts

Compatibility

Designed as an OEM-style replacement or new-installation standoff spacer for circuit boards mounted with number 6 screws in residential and light commercial electrical or HVAC control enclosures.

Installation Notes

Installation is typically performed by a licensed electrician or HVAC controls technician. Always de-energize the equipment and verify zero voltage before handling any circuit board or mounting hardware. Use appropriately sized number 6 fasteners and do not overtighten, as brass spacers can deform under excessive torque. Follow applicable NEC guidelines when working inside electrical enclosures.