Electro Hardware MMF1329M0616M25 Hex Standoff M2.5

Product Description

The ELECTRO HARDWARE MMF1329M0616M25 is a male-female hex circuit board standoff designed to create precise spacing and mechanical support between PCBs and chassis surfaces or between stacked boards. Machined from T3-grade aluminum with a bright uncoated finish, this standoff meets the QQ-A-225A Comp 2 material standard. It uses an M2.5 x 0.45 metric thread on both ends, with an overall length of 22.97 mm and a hex body width across flats of 4.50 mm. The male-threaded post engages into a mating board or threaded insert while the female end accepts the next fastener in the stack. Electronics assembly technicians and PCB integration specialists install these during board mounting and chassis assembly work.

This standoff is suited for metric-thread PCB mounting applications in electronics enclosures, control panels, and industrial equipment. The hex body profile allows installation and removal with standard hex drivers or wrench tooling without slipping. The aluminum construction keeps weight low in applications where mass is a concern. With a body length of 19.00 mm and a thread depth of 4.80 mm, the standoff provides defined board-to-surface clearance for airflow, wiring routing, or component clearance beneath the mounted board.

Key Features

• M2.5 x 0.45 metric thread on both male and female ends for standard PCB hardware compatibility
• T3-grade aluminum construction meets QQ-A-225A Comp 2 material specification
• Bright uncoated finish - no plating to interfere with tight-tolerance assemblies
• Hex body profile with 4.50 mm width across flats allows tool-driven installation
• Overall length of 22.97 mm with a body length of 19.00 mm provides consistent standoff height
• Thread depth of 4.80 mm on the female end with a thread length of 3.97 mm on the male post

Compatibility

Designed for metric PCB mounting applications using M2.5 x 0.45 threaded hardware in electronics enclosures, control boards, and chassis assemblies where aluminum hex standoffs are specified.

Installation Notes

Power down all equipment completely before servicing any circuit board assembly. Use a hex driver or small wrench sized to the 4.50 mm flats to avoid rounding the body. Hand-start threads before applying tool torque to prevent cross-threading the aluminum. Follow IPC assembly guidelines and any applicable equipment manufacturer procedures when mounting PCBs in production or field-service environments.