Electro Hardware 1329M09F16440 Hex Standoff 4-40

Product Description

The ELECTRO HARDWARE 1329M09F16440 is a male-female hex circuit board standoff designed to create fixed spacing between PCBs and mounting surfaces in electronic assemblies. Machined from 303 stainless steel with a passivated finish per QQ-S-763, this standoff provides corrosion resistance suitable for demanding environments. The hex body measures 3/16 inches across flats and delivers a 1-inch overall body length with a 4-40 threaded male post on one end and a 4-40 threaded female receptacle on the other. It is installed by electricians, electronics technicians, and field service professionals working on control boards in HVAC equipment, electrical panels, and industrial controls.

This standoff is used in residential and commercial electronic assemblies wherever a 4-40 thread size and 1-inch standoff height are required. Typical applications include mounting control boards, relay boards, and logic boards to chassis or DIN-rail subpanels. The male-female configuration allows multiple standoffs to be stacked or used as a single-tier spacer between a board and its mounting base. The passivated stainless finish makes it appropriate for environments with moderate moisture exposure.

Key Features

• Male-female thread configuration accepts 4-40 fasteners on both ends for versatile stacking or single-tier mounting
• 303 stainless steel construction with passivated finish per QQ-S-763 for corrosion resistance
• Hex body profile allows wrench engagement for secure installation without slipping
• 1-inch overall body length with 3/16-inch thread length on the male end and 1/4-inch thread depth on the female end
• Length tolerance held to plus or minus 0.005 inches for consistent board spacing

Compatibility

Designed as an OEM-style replacement or new-installation standoff for circuit board assemblies using 4-40 thread fasteners with a 1-inch standoff height requirement.

Installation Notes

Installation is performed by qualified electronics or electrical technicians. De-energize all circuits and discharge any capacitors before handling circuit boards. Use a hex driver or small wrench sized for 3/16-inch across flats to tighten the standoff without overtorquing the threaded engagement. Follow applicable NEC guidelines and equipment manufacturer instructions when servicing control board assemblies.