Electro Hardware 1305M09F16256 Hex Standoff 2-56 1/4 in Ss

Product Description

The ELECTRO HARDWARE 1305M09F16256 is a male-female hex circuit board standoff designed to space and secure printed circuit boards within enclosures, control panels, and electronic assemblies. Machined from grade 303 stainless steel with a bright uncoated finish, this standoff meets QQ-S-763 federal specifications for stainless fasteners. The hex body measures 3/16 inches across flats, making it easy to drive and torque with standard hex tooling. Overall body length is 0.250 inches, with a thread depth of 3/16 inches on the female end and a thread length of 5/32 inches on the male end. The 2-56 thread size suits fine-pitch circuit board mounting applications common in HVAC control boards, electrical enclosures, and instrumentation panels.

This standoff is used wherever circuit boards must be elevated and isolated from a mounting surface, including residential and light commercial HVAC control assemblies, industrial control enclosures, and electronic equipment racks. Electricians, controls technicians, and electronics assembly professionals install these fasteners during board replacement or new panel builds. The male-female design allows standoffs to be stacked or used with a mating screw and nut configuration for secure, vibration-resistant board mounting.

Key Features

• Grade 303 stainless steel construction meets QQ-S-763 federal specification
• Male-female thread configuration for stackable or single-level PCB mounting
• 2-56 thread size for fine-pitch circuit board fastening applications
• Hex body at 3/16 inches across flats allows standard hex tool installation
• Bright uncoated finish resists corrosion without added coating thickness
• Length tolerance held to plus or minus 0.005 inches for precise board standoff height

Compatibility

Designed as an OEM-style replacement or service fastener for circuit board mounting applications requiring a 2-56 thread male-female hex standoff with a 0.250-inch body length.

Installation Notes

Installation is performed by electricians or controls technicians. De-energize all circuits and discharge any capacitors in the panel before handling circuit boards or fasteners. Use an appropriately sized hex driver or nut driver matching the 3/16-inch across-flats dimension to avoid rounding the hex body. Follow applicable NEC guidelines for enclosure work and handle circuit boards using ESD-safe practices to prevent component damage.