Electro Hardware 1312M12F21256 Hex Standoff 2-56

Product Description

The ELECTRO HARDWARE 1312M12F21256 is a male-female hex circuit board standoff designed to mount and space printed circuit boards within electronic enclosures and control assemblies. It features a 2-56 unified thread, with a male thread on one end and a female threaded bore on the other, allowing boards to be stacked or secured to a panel in a single fastener operation. The hex body measures 0.1875 inches (3/16 inch) across flats, and the overall body length is 0.4688 inches (15/32 inch). Constructed from steel with a zinc-plated finish meeting ASTM B633 Type 1 and QQ-S-633 standards, this standoff delivers corrosion resistance suitable for indoor control panel environments. Installed by electronics technicians, electricians, and HVAC control board assemblers.

This standoff is used wherever a 2-56 threaded male-female hex spacer is required to elevate or separate a PCB from a mounting surface or from an adjacent board. Typical applications include HVAC control boards, electrical enclosure assemblies, and industrial panel construction. The hex body allows wrench engagement for secure tightening without slippage. The thread depth on the female end is 3/16 inch, and the male thread length is 5/32 inch, providing reliable thread engagement for the 2-56 screw size. Sold individually with a minimum order quantity of 10 pieces.

Key Features

• Male-female configuration allows stacking or panel-mounting of circuit boards in a single fastener
• 2-56 unified thread size on both male and female ends
• Hex body at 0.1875 inches across flats for wrench engagement and secure installation
• Overall body length of 0.4688 inches with a length tolerance of -0.005 to 0.005 inches
• Steel construction with zinc-plated finish per ASTM B633 Type 1 and QQ-S-633
• Inch measurement system; UNSPSC Code 31161816

Compatibility

Designed as a standard 2-56 male-female hex circuit board standoff for use in PCB mounting applications requiring inch-series fasteners and a 3/16 inch hex body profile.

Installation Notes

Installation is typically performed by electronics technicians or electricians during control board assembly or panel wiring. De-energize and discharge all circuits before handling PCBs or fastening standoffs to live assemblies. Use an appropriately sized hex wrench or nutdriver on the 3/16 inch hex body to achieve a snug fit without overtightening, which can crack the PCB substrate. Ensure the mating 2-56 screw thread is clean and free of debris before engagement.