Electro Hardware 1306M03F21256 Hex Board Standoff

Product Description

The ELECTRO HARDWARE 1306M03F21256 is a male-female hex circuit board standoff designed to space and secure printed circuit boards within electronic enclosures and control assemblies. The standoff features a 2-56 thread size with a male thread on one end and a female thread on the other, allowing boards to be stacked or mounted to a chassis at a fixed, repeatable height. The body is brass with a zinc-plated finish meeting ASTM B633 Type 1 and QQ-B-626 Comp 22 standards. Overall body length is 0.2813 inches with a hex width across flats of 0.1875 inches. Licensed electronics technicians, control board assemblers, and HVAC service technicians use these standoffs when servicing or replacing control boards in residential and light commercial equipment.

This standoff is suited for applications where small-format circuit boards require rigid mechanical support and precise separation from a mounting surface or adjacent board. The 2-56 thread size is common in compact control board assemblies found in HVAC equipment, low-voltage control panels, and other electronic enclosures. The hex body allows installation and removal with standard hex drivers or small nutdrivers without marring adjacent components. The zinc plating provides corrosion resistance appropriate for indoor control environments.

Key Features

• Male-female configuration enables board stacking or chassis mounting in a single fastener
• Brass construction with zinc-plated finish meets ASTM B633 Type 1 and QQ-B-626 Comp 22
• 2-56 thread size fits standard small-format circuit board mounting holes
• Hex body shape allows tool-driven installation with a nutdriver or hex wrench
• Overall body length of 0.2813 inches suits compact, low-profile board mounting
• Length tolerance of -0.005 to 0.005 inches ensures consistent board standoff height

Compatibility

Designed as a standard 2-56 male-female hex circuit board standoff for use in printed circuit board assemblies requiring inch-series hardware in compact control enclosures.

Installation Notes

Installation should be performed by a qualified technician following applicable control board service procedures. De-energize all circuits before handling circuit boards or installing standoffs. Use a properly sized nutdriver or hex tool to avoid stripping the hex body. Do not overtighten, as brass standoffs in small thread sizes are susceptible to thread damage if torque is applied beyond snug-fit engagement.