Electro Hardware MMX1406M09-MSC M3 Hex Standoff

Product Description

The ELECTRO HARDWARE MMX1406M09-MSC is a male-male hex circuit board standoff designed to create precise spacing between PCB layers or between a board and a mounting surface. Threaded M3 x 0.5 on both ends, this standoff features a hex body shape that allows installation and removal with standard hex tooling. The overall length is 5.5 mm, the body length is 5.5 mm, and the thread length ranges from 5 mm to 6 mm depending on engagement. Manufactured from Grade 18-8 303 stainless steel with a passivated finish, it meets QQ-S-763 fastener standards for corrosion resistance and dimensional consistency.

This standoff is suited for electronic assemblies requiring metric hardware, including industrial control boards, HVAC control panels, electrical enclosures, and general PCB mounting applications. The M3 x 0.5 thread size is a widely used metric pitch in circuit board and enclosure work. The passivated stainless steel construction makes it appropriate for environments where light corrosion resistance is required. It is sold individually and is compatible with standard M3 metric fastener tooling.

Key Features

• M3 x 0.5 male threads on both ends for board-to-board or board-to-chassis mounting
• 5.5 mm overall length and hex body for precise standoff height and wrench-driven installation
• Grade 18-8 303 stainless steel construction with passivated finish for corrosion resistance
• Meets QQ-S-763 fastener standard
• Width across flats: 5 mm, compatible with standard metric hex drivers and wrenches
• Length tolerance of -0.150 mm to 0.150 mm for consistent board spacing

Compatibility

Designed as a metric male-male hex standoff for use with M3 x 0.5 threaded hardware in circuit board assemblies, electronic enclosures, and control panel fabrication.

Installation Notes

Installation is performed by electronics technicians or electricians working on control board assemblies. Power down all circuits and discharge any capacitors before working on a PCB assembly. Use an appropriately sized metric hex driver or wrench matched to the 5 mm width across flats to avoid rounding the hex body. Do not over-torque; stainless steel fasteners are susceptible to galling if driven without proper technique.