Electro Hardware MS1025M07F16F Circuit Board Spacer M4

Product Description

The ELECTRO HARDWARE MS1025M07F16F is a round, female unthreaded circuit board spacer designed for M4 screw applications. Machined from Grade 303 stainless steel and left uncoated with a bright finish, this spacer meets the QQ-S-763 fastener standard. It measures 13 mm (0.512 inches) overall length with a 6 mm (0.236 inches) outside diameter and an inside diameter ranging from 4.2 to 4.8 mm (0.165 to 0.189 inches). Length tolerance is -0.13 to 0.13 mm and inside diameter tolerance runs 0.000 to 0.270 mm. Electronics assemblers, PCB technicians, and precision hardware installers use this spacer to maintain consistent standoff clearance between a circuit board and a mounting surface.

This spacer is suited for metric M4 fastener assemblies in electronics manufacturing, control board mounting, and industrial panel fabrication. Its round body and uncoated stainless steel construction make it appropriate for environments where corrosion resistance and dimensional consistency are required. Typical applications include HVAC control board assemblies, electrical enclosure panel builds, and any printed circuit board installation requiring a rigid, non-threaded standoff with M4 screw clearance.

Key Features

• Grade 303 stainless steel construction for corrosion resistance and machinability
• Female unthreaded body accepts M4 screws with 4.2 to 4.8 mm inside diameter range
• 13 mm overall length with tight length tolerance of -0.13 to 0.13 mm
• 6 mm outside diameter with round body profile for consistent seating
• Bright uncoated finish meets QQ-S-763 fastener standard
• Metric dimensioning for compatibility with M4 metric fastener systems

Compatibility

Designed for use with M4 metric screw assemblies in circuit board standoff and spacer applications where a female unthreaded round spacer conforming to QQ-S-763 is specified.

Installation Notes

Installation requires no special tooling beyond standard M4 hardware and fasteners. Power down and de-energize any control board or electrical assembly before installing or repositioning spacers. Handle stainless steel spacers with clean gloves or tools to avoid surface contamination in sensitive electronics environments. Follow applicable assembly drawings and IPC standards for circuit board mounting clearances.