Electro Hardware 1377M09F16256 Hex Standoff 2-56 2.5 in Ss

Product Description

The ELECTRO HARDWARE 1377M09F16256 is a male-female hex circuit board standoff designed to create precise spacing between stacked PCBs or between a circuit board and a mounting surface. Machined from 303 stainless steel with a bright uncoated finish, this standoff meets fastener standard QQ-S-763. It features a 2-56 thread size with a hex body shape measuring 3/16 inches across the flats. The overall body length is 2.5 inches, with a thread length of 5/32 inches on the male end and a 3/16-inch thread depth on the female end. Electronics assembly technicians and electrical panel builders install these standoffs during board-level mechanical assembly work.

This standoff is suited for use in electronic enclosures, control panels, and industrial circuit board assemblies where corrosion resistance and dimensional accuracy are required. The 303 stainless steel construction makes it appropriate for environments with elevated humidity or exposure to mild chemicals. It is commonly used in HVAC control board assemblies, electrical equipment enclosures, and general-purpose PCB mounting applications where a #2-56 threaded fastener is specified.

Key Features

• Male-female configuration allows daisy-chaining of multiple standoffs for adjustable board spacing
• Hex body shape accepts standard hex drivers for secure, torque-controlled installation
• 303 stainless steel construction provides corrosion resistance in demanding environments
• Bright uncoated finish meets QQ-S-763 fastener standard
• Tight length tolerance of -0.005 to 0.005 inches ensures consistent board stack height
• 2-56 thread size compatible with standard small-fastener PCB hardware

Compatibility

Designed as an OEM-style replacement or new-installation standoff for circuit board assemblies requiring a #2-56 male-female hex standoff with a 2.5-inch overall body length.

Installation Notes

Installation is performed by electronics assembly technicians or licensed electricians during control board mounting procedures. Power down and de-energize all circuits before handling or mounting circuit boards. Use an appropriately sized hex driver or wrench on the hex body to avoid damaging the standoff or the PCB. Do not overtighten, as excessive torque on small-diameter 2-56 threads can strip the fastener or crack the board substrate.