Electro Hardware S301M07F16E Round Circuit Board Spacer

Product Description

The ELECTRO HARDWARE S301M07F16E is a round, female unthreaded circuit board spacer designed to provide precise standoff clearance between a PCB and its mounting surface. Built from Grade 303 stainless steel with a bright uncoated finish, this spacer meets the QQ-S-763 fastener standard and delivers reliable corrosion resistance in demanding environments. It measures 0.375 inches overall length, 0.1875 inches outside diameter, and 0.116 inches inside diameter, sizing it for a Number 4 screw. HVAC technicians, electricians, and panel assembly professionals use this type of hardware when mounting control boards and circuit assemblies in equipment enclosures.

This spacer is suited for residential and light commercial applications where control boards, relay boards, or other PCBs must be secured with consistent standoff spacing. The Number 4 screw size and compact 0.1875-inch outside diameter make it a common fit for terminal-style circuit board mounting configurations in HVAC controls, electrical panels, and similar assemblies. It is sold individually, making it practical for service calls or small repair jobs requiring single-piece replacement hardware.

Key Features

• Grade 303 stainless steel construction meets QQ-S-763 fastener standard
• Female unthreaded body accepts Number 4 screw for secure PCB standoff mounting
• Overall length of 0.375 inches with a tight length tolerance of -0.005 to 0.005 inches
• Inside diameter of 0.116 inches with tolerance of 0.000 to 0.010 inches for consistent fit
• Outside diameter of 0.1875 inches in a round body profile
• Bright uncoated finish for clean appearance and corrosion resistance without added coating thickness

Compatibility

Designed as an OEM-style replacement or service spacer for circuit board mounting applications requiring a Number 4 screw, round body, female unthreaded standoff in the 0.375-inch length range.

Installation Notes

Installation is performed by qualified technicians during control board mounting or replacement procedures. Always de-energize the equipment and follow lockout/tagout procedures before servicing any circuit board assembly. Use the correct Number 4 fastener and avoid overtightening, which can crack the PCB or deform the spacer. Verify standoff height clears all board traces and components before final tightening.