Electro Hardware MMF1315M0321M25 Hex Standoff M2.5x0.45

Product Description

The ELECTRO HARDWARE MMF1315M0321M25 is a male-female hex circuit board standoff designed to create precise spacing and mechanical support between PCBs and chassis panels or between stacked boards. Manufactured from brass with a zinc-plated finish meeting ASTM B633 Type 1 and QQ-B-626 Comp 22 standards, this standoff provides reliable electrical isolation and corrosion resistance. The M2.5 x 0.45 metric thread runs on both the male and female ends, with an overall length of approximately 0.589 inches (14.97 mm), a body length of 0.433 inches (11.00 mm), and a hex body width across flats of 0.177 inches (4.50 mm). Electronics assembly technicians and electrical panel builders use these fasteners when precise board-to-board or board-to-chassis clearance is required.

This standoff is suited for use in electronics enclosures, control panels, industrial PCB assemblies, and HVAC or electrical control board mounting applications where metric M2.5 threaded hardware is specified. The hex body profile accepts a standard wrench or driver for controlled torque installation without slipping. Its compact size and brass construction make it well-suited for both light-duty consumer electronics and more demanding industrial or commercial control system assemblies where dimensional consistency and surface finish integrity are priorities.

Key Features

• Male-female configuration allows stacking of multiple boards or mounting a single board to a chassis surface
• M2.5 x 0.45 metric thread on both ends for standard metric PCB fastener compatibility
• Brass base material with zinc-plated finish per ASTM B633 Type 1 and QQ-B-626 Comp 22
• Hexagonal body profile allows wrench engagement for precise, repeatable installation
• Overall length of 14.97 mm with a length tolerance of -0.150 to 0.150 mm for consistent board spacing
• Thread depth of 4.80 mm on the female end with a thread length of 3.97 mm on the male end

Compatibility

Designed as a standard metric M2.5 x 0.45 male-female hex standoff suitable for PCB mounting and board-stacking applications where this thread size and hex body profile are specified.

Installation Notes

Installation is typically performed by electronics assembly technicians or electricians during control board mounting. Power down all equipment and discharge any stored energy before working on or near circuit boards. Use an appropriately sized wrench or hex driver on the 4.50 mm flats to seat the standoff without over-torquing, which can crack PCB mounting holes or strip the brass threads. Follow applicable assembly standards and any equipment manufacturer guidelines for fastener seating depth and torque range.