Electro Hardware S341M10F21E Circuit Board Spacer Steel

Product Description

The ELECTRO HARDWARE S341M10F21E is a round, female unthreaded circuit board spacer designed to maintain precise separation between a PCB and a mounting surface. Built from Grade 2 steel with a zinc-plated finish meeting ASTM B633 and QQ-S-633 Type 1 standards, this spacer provides reliable corrosion resistance in standard electronic and industrial enclosure environments. It measures 1 inch overall length with a 0.116 inch inside diameter and a 3/16 inch (0.1875 inch) outside diameter, sized for a 4 screw. Electricians, electronics technicians, and panel builders use this type of hardware when securing control boards inside HVAC units, electrical enclosures, and similar equipment.

This spacer is suited for use wherever a 4 screw circuit board mounting application requires a fixed standoff with a female unthreaded body. Typical installations include control board mounting in residential and light commercial HVAC systems, electrical panel assemblies, and industrial equipment enclosures. The zinc-plated steel construction makes it appropriate for indoor and protected outdoor environments where mild corrosion resistance is needed. It is sold and shipped individually, making it practical for single-unit replacement or small-batch service work.

Key Features

• Female unthreaded, round body design for 4 screw circuit board mounting
• 1 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
• 3/16 inch (0.1875 inch) outside diameter
• Grade 2 steel construction with zinc-plated finish
• Meets ASTM B633 and QQ-S-633 Type 1 fastener standards

Compatibility

Designed as an OEM-style replacement or service spacer for circuit board mounting applications requiring a 4 screw, female unthreaded round standoff with a 1 inch overall length in inch-measurement systems.

Installation Notes

Installation is typically performed by licensed electricians or electronics technicians during control board replacement or panel assembly. Always de-energize the equipment and follow applicable NEC lockout/tagout procedures before servicing any control board or panel assembly. Verify the screw size and board hole pattern match before installing to avoid misalignment or damage to the PCB. Use appropriate hand tools and avoid over-driving the mating screw, which can deform the unthreaded bore.