Electro Hardware 1377M03F21256 Hex Standoff 2-56 2.5in

Product Description

The ELECTRO HARDWARE 1377M03F21256 is a male-female hex circuit board standoff with a 2-56 thread size and an overall length of 2.5 inches. It features a hexagonal body shape that allows installation and removal with standard hex drivers or wrenches. Constructed from brass with a zinc-plated finish meeting ASTM B633 Type 1 and QQ-B-626 Comp 22 standards, this standoff is built for reliable performance in electronics assemblies. The width across flats measures 0.1875 inches (3/16 inches), and the thread depth is 3/16 inches. It is sold individually and is appropriate for use in precise PCB mounting applications.

This standoff is used to create controlled spacing between circuit boards or between a circuit board and a mounting surface. The male thread on one end engages a mating female threaded hole or insert, while the female threaded end accepts a fastener or the male thread of an adjacent standoff. Typical installation scenarios include electronics enclosures, control panels, and industrial or commercial equipment where stable, repeatable board standoff height is required. Electronics assembly technicians and field service engineers commonly install these in both OEM manufacturing and repair contexts.

Key Features

• Male-female configuration allows stacking or single-board mounting on a common 2-56 thread pattern
• Hexagonal body shape enables tool-assisted installation with a standard hex wrench or nut driver
• Brass construction with zinc-plated finish provides corrosion resistance per ASTM B633 Type 1 and QQ-B-626 Comp 22
• Overall body length of 2.5 inches with a length tolerance of -0.005 to 0.005 inches for precise board spacing
• Thread length of 5/32 inches on the male end for secure thread engagement
• Inch system of measurement; sold as individual units with no minimum order requirement

Compatibility

Designed as an OEM-style replacement or new-installation component for circuit board assemblies requiring 2-56 threaded male-female hex standoffs with a 3/16-inch width across flats.

Installation Notes

Installation is performed by electronics assembly technicians or field service personnel. Power down and de-energize all equipment before working on any circuit board assembly. Use an appropriately sized hex wrench or nut driver matched to the 0.1875-inch (3/16-inch) width across flats to avoid rounding the hex body. Do not overtighten, as excess torque can crack a PCB or damage the board mounting holes.