Electro Hardware S373M01F21E Circuit Board Spacer Brass

Product Description

The ELECTRO HARDWARE S373M01F21E is a round, female unthreaded circuit board spacer designed to mount and stand off printed circuit boards within electronic assemblies. Built from brass and finished with zinc plating per ASTM B633 and QQ-B-626 Comp 22 Type 1, this spacer provides reliable electrical isolation and mechanical support between a PCB and its mounting surface. It accepts a Number 4 screw, measures 1.5 inches overall length, and carries a 0.116 inch inside diameter with a 0.1875 inch outside diameter. Licensed electricians, electronics technicians, and HVAC control board installers rely on this type of hardware when replacing or mounting control boards in residential and commercial equipment.

This spacer is suited for use in control panel assemblies, HVAC control boards, relay panels, and general electronic enclosures where a fixed standoff distance of 1.5 inches is required. Its zinc-plated brass construction resists corrosion in light-duty indoor environments. The female unthreaded bore guides a Number 4 fastener without pre-tapping, making it straightforward to install in production and field-service scenarios alike. Sold individually, it is appropriate for single-board replacement work as well as small-volume repair jobs.

Key Features

• Brass body with zinc plating meets ASTM B633 and QQ-B-626 Comp 22 Type 1 standards
• Female unthreaded design accepts Number 4 screws without tapping
• 1.5 inch overall length with tight length tolerance of -0.005 to 0.005 inches
• 0.116 inch inside diameter with tolerance of 0.000 to 0.010 inches for consistent fit
• Round body profile for uniform load distribution on PCB mounting points
• Sold as individual unit with no minimum order quantity above one piece

Compatibility

Designed as an OEM-style replacement or service spacer for circuit board mounting applications requiring a Number 4 screw, 1.5 inch standoff height, and 0.1875 inch outside diameter in inch-measurement fastener systems.

Installation Notes

De-energize and lock out all power to the equipment before removing or installing circuit board hardware. Use a screwdriver or nut driver appropriate for the Number 4 fastener being used with this spacer. Ensure the mating board holes align with the spacer bore before seating fasteners to avoid cracking the PCB. Follow applicable NEC guidelines when working inside electrical enclosures.