Electro Hardware P289M09F16256 Hex Standoff 2-56 3/16in Ss

Product Description

The ELECTRO HARDWARE P289M09F16256 is a female hex circuit board standoff designed to create precise spacing between PCBs and mounting surfaces in electronic assemblies. Machined from grade 303 stainless steel with a plain bright finish, this standoff accepts a 2-56 thread and measures 3/16 inches overall length with a fully threaded interior to the full 3/16 inches thread depth. The hex body measures 3/16 inches width across flats for standard wrench engagement. It meets the QQ-S-763 fastener standard. Electronics assemblers and technicians working on control boards, instrumentation panels, and automation enclosures will find this standoff suited to precision mounting applications where corrosion resistance and dimensional consistency matter.

This standoff is used in circuit board mounting applications where female-to-female or male-to-female stacking configurations are required. Its small 2-56 thread size makes it appropriate for compact PCB assemblies found in HVAC control boards, electrical enclosures, industrial instrumentation, and similar low-clearance electronic hardware. The stainless steel construction makes it suitable for environments with elevated humidity or exposure to mild corrosive conditions.

Key Features

• Female hex body accepts 2-56 thread fasteners on both ends for stacking or panel mounting
• Fully threaded interior with 3/16 inches thread depth throughout the entire body length
• Grade 303 stainless steel construction meets QQ-S-763 fastener standard
• Plain bright finish — no coating to interfere with thread engagement or dimensional tolerances
• Hex body profile allows wrench engagement for controlled installation torque
• Length tolerance held to -0.005 to 0.005 inches for consistent board spacing

Compatibility

Designed for use in any PCB mounting application requiring a 2-56 female hex standoff with 3/16 inches overall length and 3/16 inches width across flats in an inch-measurement system.

Installation Notes

Installation is performed by electronics technicians and electricians working on control board assemblies and enclosure hardware. Power down and de-energize the assembly before installing or removing standoffs from any live control board. Use a properly sized hex wrench or nut driver sized for 3/16 inches width across flats to avoid rounding the hex body. Do not overtighten — the 2-56 thread is fine and susceptible to stripping in thin PCB mounting holes.