Electro Hardware MP427M09F16M3 Female Hex Standoff M3

Product Description

The ELECTRO HARDWARE MP427M09F16M3 is a fully threaded female hex circuit board standoff designed to mount and space printed circuit boards in electronic assemblies. Machined from grade 303 stainless steel with a plain, bright uncoated finish, this standoff offers corrosion resistance and consistent dimensional accuracy. The M3 x 0.5 metric thread runs the full 14 mm thread depth, and the hex body measures 4.5 mm across flats for secure engagement with standard hex drivers. Electronics assembly technicians and panel builders install this type of hardware during board-level mechanical integration work.

This standoff is suited for use in industrial control panels, HVAC control boards, electrical enclosures, and other applications requiring reliable PCB mounting with metric fastener systems. The fully threaded female design accepts an M3 screw from either end, allowing stacking configurations or direct board-to-chassis attachment. The 14 mm overall length provides clearance appropriate for standard single-board mounting scenarios. Its stainless steel construction makes it a practical choice in environments with elevated humidity or mild chemical exposure.

Key Features

• Fully threaded female M3 x 0.5 interior thread, 14 mm thread depth
• Grade 303 stainless steel construction meeting QQ-S-763 standard
• Hex body shape, 4.5 mm width across flats, for wrench or driver engagement
• Plain bright uncoated finish — no added coating to affect thread tolerances
• Length tolerance of -0.13 mm to 0.13 mm for consistent stack height
• 14 mm overall length suitable for standard PCB standoff applications

Compatibility

Designed as a metric M3 x 0.5 female hex standoff for use with standard M3 screws and mating hardware in circuit board mounting applications. Compatible with assemblies conforming to the QQ-S-763 stainless steel fastener standard.

Installation Notes

Installation is performed by electronics assemblers or electricians during panel or board assembly. Power down and de-energize any assembly before installing or removing standoffs on live circuit boards. Use a hex driver or wrench sized for 4.5 mm across flats to avoid rounding the hex body. Do not over-torque — apply only enough force to seat the standoff flush and secure without deforming the thread.