Electro Hardware 1451M06F16-440 Hex Standoff 4-40

Product Description

The ELECTRO HARDWARE 1451M06F16-440 is a male-female hex circuit board standoff designed to create precise spacing between stacked PCBs or between a PCB and a mounting surface. Machined from aluminum with an anodized finish, this standoff meets QQ-A-225A Comp 2 material standards and carries a T-3 material grade. It features a 4-40 thread size, an overall length of 1.1875 inches, a hex body width across flats of 0.25 inches, and a 1 inch hex body length. Electronics assembly technicians, panel builders, and PCB layout specialists use this standoff in control boards, HVAC circuit boards, and industrial enclosures where reliable, repeatable PCB mounting is required.

This standoff is suited for applications where a threaded male post is needed on one end and a threaded female receptacle on the other, allowing secure board-to-board or board-to-chassis stacking. It fits residential and commercial control board assemblies, electrical panel sub-assemblies, and any application calling for a 4-40 inch-system hex standoff. The anodized aluminum construction keeps weight low while providing corrosion resistance appropriate for indoor electronics environments.

Key Features

• Male-female configuration enables secure stacking of PCBs or mounting to a chassis
• 4-40 thread size on both male and female ends for standard inch-system compatibility
• Hex body shape allows tightening with a standard wrench or hex driver
• Anodized aluminum finish meets QQ-A-225A Comp 2 standards for corrosion resistance
• Tight length tolerance of plus or minus 0.005 inches ensures consistent PCB spacing
• T-3 material grade aluminum construction balances strength and light weight

Compatibility

Designed as an OEM-style replacement or new-installation standoff for circuit board assemblies requiring a 4-40 inch-system male-female hex standoff with a 1.1875 inch overall length.

Installation Notes

Installation is performed by electronics assembly technicians or qualified electricians working on control board assemblies. Power down and de-energize the equipment completely before removing or installing circuit board standoffs. Use a hex driver or appropriately sized wrench on the hex body to avoid damaging the anodized finish or distorting the threads. Do not overtighten, as aluminum threads can strip if excessive torque is applied.