Electro Hardware 1312M03F21256 Hex Standoff 2-56

Product Description

The ELECTRO HARDWARE 1312M03F21256 is a male-female hex circuit board standoff designed to create precise vertical spacing between stacked PCBs or between a circuit board and a mounting surface. Machined from brass with a zinc plating finish meeting ASTM B633 Type 1 and QQ-B-626 Comp 22 standards, this standoff provides corrosion resistance and reliable electrical isolation in electronic assemblies. The hexagonal body measures 3/16 inches across flats, the overall body length is 15/32 inches (0.4688 inches), and the thread size is 2-56. Electronics assemblers, electrical technicians, and board-level service professionals install these fasteners during PCB mounting and rework operations.

This standoff is used in circuit board assemblies where a male threaded stud on one end engages an adjacent board or chassis while the female threaded bore on the opposite end accepts a mating screw. Typical applications include control boards in HVAC equipment, industrial electronics enclosures, and general electronic assemblies requiring a stacked or elevated board configuration. The 2-56 thread size targets fine-pitch PCB mounting scenarios common in compact control electronics.

Key Features

• Male-female hex body allows stacking or standoff mounting with standard 2-56 fasteners
• Brass construction with zinc plating meets ASTM B633 Type 1 and QQ-B-626 Comp 22 standards
• Hexagonal body shape allows wrench engagement for controlled installation torque
• Overall body length of 15/32 inches (0.4688 inches) provides consistent board-to-board or board-to-chassis spacing
• Thread depth of 3/16 inches on the female end and thread length of 5/32 inches on the male end
• Length tolerance of -0.005 to 0.005 inches supports precise stacking in tight assemblies

Compatibility

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

Installation Notes

Installation is performed by electronics technicians or licensed electricians during board assembly or rework. Always de-energize and discharge any boards or assemblies before handling. Use an appropriately sized hex wrench or nutdriver on the hex body to seat the standoff without over-stressing the PCB substrate. Follow applicable assembly workmanship standards and ESD precautions when working with populated circuit boards.