Electro Hardware MS1027M04F16F Circuit Board Spacer M4

Product Description

The ELECTRO HARDWARE MS1027M04F16F is a round, female unthreaded circuit board spacer designed for M4 screw applications in electronics assembly and PCB mounting. Machined from aluminum grade T3 and finished bright/uncoated, this spacer meets fastener standard QQ-A-225A Comp 2. It measures 14 mm (0.551 inches) overall length with an outside diameter of 6 mm (0.236 inches) and an inside diameter ranging from 4.2 to 4.8 mm (0.165 to 0.189 inches). Electronics assemblers, field service technicians, and industrial maintenance pros use this spacer to establish precise standoff clearance between a circuit board and a mounting surface or chassis panel.

This spacer suits residential and commercial electronics assembly work wherever M4 hardware is specified. Typical applications include PCB standoff mounting in control panels, HVAC control boards, electrical enclosures, and industrial equipment chassis. The female unthreaded body accepts a male M4 fastener passed through from the board side, making it compatible with standard metric hardware commonly found in OEM control assemblies and aftermarket repair scenarios.

Key Features

• Female unthreaded round body — accepts M4 screw for through-fastener board mounting
• 14 mm overall length with a tight length tolerance of -0.130 to 0.130 mm for consistent standoff height
• 6 mm outside diameter and 4.2 to 4.8 mm inside diameter with 0.000 to 0.270 mm ID tolerance
• Aluminum grade T3 construction — lightweight, corrosion-resistant, and non-magnetic
• Bright/uncoated finish — no coating to interfere with grounding contact or dimensional fit
• Meets QQ-A-225A Comp 2 fastener standard for traceability in demanding applications

Compatibility

Designed for use with M4 metric fasteners in PCB and circuit board standoff applications where a female unthreaded aluminum spacer with a 6 mm outside diameter and 14 mm overall length is required.

Installation Notes

Installation is performed by electronics technicians or electricians working on control panel assemblies or PCB mounting. Always de-energize and lockout the equipment before servicing any circuit board or control assembly. Use appropriately sized metric tooling for M4 hardware and avoid overtightening, which can crack or warp the PCB. Verify standoff height requirements against your board layout before installation to confirm the 14 mm OAL suits your application.