Electro Hardware MS1007M17F16D Round Board Spacer M3

Product Description

The ELECTRO HARDWARE MS1007M17F16D is a round, female unthreaded circuit board spacer designed for M3 screw applications in printed circuit board assemblies. Molded from Nylon Grade 101 to MIL-P-17091B specification, this spacer provides a rigid, non-conductive standoff between a PCB and a mounting surface or between stacked boards. It measures 0.157 inches overall length with an inside diameter ranging from 0.126 to 0.142 inches and an outside diameter of 0.236 inches. The uncoated finish and metric dimensioning make it a direct fit for precision electronics assembly where controlled board clearance and electrical isolation are required.

This spacer is used in residential and commercial electronics assemblies, control panels, and circuit board mounting applications where an M3 fastener is specified. Typical install scenarios include PCB standoff stacking in HVAC control boards, electrical enclosures, and industrial control assemblies. The female unthreaded bore accepts an M3 screw passed through from the board side, clamping the spacer between board layers or between a board and chassis. The metric geometry suits designs built to IPC or MIL-spec dimensional standards.

Key Features

• Nylon Grade 101 construction provides electrical insulation and light mechanical load-bearing
• Meets MIL-P-17091B fastener standard for military and industrial-grade assemblies
• Female unthreaded bore sized for M3 screw pass-through
• Uncoated bright finish — no coating thickness variation affecting dimensional tolerances
• Round body shape with 0.236-inch OD for stable, consistent board seating
• Overall length tolerance of plus or minus 0.005 inches for consistent stack height

Compatibility

Designed as an OEM-style replacement or new-installation spacer for circuit board assemblies using M3 metric fasteners where a non-conductive nylon standoff is specified.

Installation Notes

Circuit board spacers are typically installed by electronics technicians or electricians during PCB assembly or control board service. Power down and de-energize all circuits before servicing any control board assembly. Use care not to overtighten M3 fasteners through the unthreaded bore, as nylon spacers do not have thread engagement and rely on clamping force from the fastener head and mating hardware. Handle nylon components away from solvents or high-heat sources that can deform the material.