Electro Hardware 1306M09F16440 Hex Standoff 4-40

Product Description

The ELECTRO HARDWARE 1306M09F16440 is a male-female hex circuit board standoff designed to create precise spacing between PCBs and mounting surfaces in electronic assemblies. Machined from 303 stainless steel with a passivated finish per QQ-S-763, this standoff resists corrosion and maintains dimensional stability across a range of environments. It features a 4-40 thread size, an overall body length of 0.2813 inches (9/32 inch), and a hex body shape measuring 0.1875 inches (3/16 inch) across flats. The thread length on the male end is 3/16 inch with a thread depth of 1/4 inch on the female end. Installation is handled by electronics technicians and PCB assembly professionals.

This standoff is suited for use in circuit board mounting applications where consistent board-to-board or board-to-chassis spacing is required. The male-female configuration allows standoffs to be stacked or used as a pass-through mount point, making them common in control boards, instrumentation enclosures, and industrial electronics. The compact hex profile accepts a standard nut driver or hex socket for installation in tight board layouts. This part ships in single-unit packaging with a minimum order quantity of 5 units.

Key Features

• Male-female thread configuration for stackable or single-layer PCB mounting
• 303 stainless steel construction with passivated finish per QQ-S-763 for corrosion resistance
• 4-40 thread size for compatibility with standard PCB hardware
• Overall body length of 0.2813 inches (9/32 inch) for precise board spacing
• Hex body shape at 3/16 inch across flats for easy installation with a nut driver
• Length tolerance of -0.005 to 0.005 inches for consistent fitment

Compatibility

Designed as an OEM-style replacement or new-installation standoff for circuit board assemblies using 4-40 threaded hardware in inch-measurement systems.

Installation Notes

Installation is performed by electronics technicians or qualified assembly personnel. Power down and de-energize all circuits before working on any PCB assembly. Use a properly sized nut driver or hex socket matching the 3/16 inch across-flats dimension to avoid deforming the hex body. Follow applicable assembly documentation and torque guidelines from the equipment manufacturer when securing standoffs in production or service environments.