Electro Hardware 1329M12F21256 Hex Standoff 2-56 1 Inch

Product Description

The ELECTRO HARDWARE 1329M12F21256 is a male-female hex circuit board standoff designed to create fixed spacing between printed circuit boards or between a board and a mounting surface. Machined from steel with a zinc-plated finish meeting ASTM B633 Type 1 and QQ-S-633 standards, this fastener provides reliable electrical isolation and mechanical support in electronic assemblies. The hexagonal body measures 3/16 inches across flats, with an overall body length of 1 inch. The male thread is a number 2-56 unified coarse thread with a thread length of 5/32 inches, and the female threaded end accepts a mating 2-56 fastener with a thread depth of 3/16 inches. Electricians, electronics technicians, and control board assemblers use this standoff when mounting PCBs inside HVAC control enclosures, electrical panels, and industrial equipment.

This standoff is suited for light-duty PCB mounting applications in residential and commercial electronic assemblies. It is commonly used when stacking circuit boards, securing control boards inside HVAC equipment enclosures, and mounting logic boards to chassis surfaces. The inch-system thread and standard hex body geometry make it compatible with common hand tools and automated assembly processes. Sold individually, it is appropriate for repair, prototyping, and low-volume production builds.

Key Features

• Male-female configuration allows daisy-chained board stacking or single-level PCB mounting
• Hexagonal body profile accepts standard hex drivers and wrenches for precise torque application
• Zinc-plated steel construction meets ASTM B633 Type 1 and QQ-S-633 finish standards for corrosion resistance
• Number 2-56 thread size on both male and female ends with a 3/16-inch female thread depth
• 1-inch overall body length provides consistent board standoff spacing
• Length tolerance held to plus or minus 0.005 inches for tight assembly fits

Compatibility

Designed as an OEM-style replacement or new-installation standoff for circuit board assemblies using number 2-56 inch-series threaded fasteners in hex standoff configurations.

Installation Notes

Installation is performed by electronics technicians or electricians working on control board assemblies. De-energize all equipment and discharge any stored electrical energy before handling circuit boards or installing standoffs. Use an appropriately sized hex driver or nut driver to seat the standoff without overtightening, which can crack PCB mounting holes. Follow applicable NEC guidelines and equipment manufacturer instructions when working inside energized enclosures.