Electro Hardware 1307M09F16440 Hex Standoff 4-40 Ss

Product Description

The ELECTRO HARDWARE 1307M09F16440 is a male-female hex circuit board standoff designed to create precise spacing between stacked PCBs or between a circuit board and a mounting surface. Machined from 303 stainless steel with a passivated finish per QQ-S-763, this standoff resists corrosion and maintains dimensional accuracy in demanding environments. The hex body measures 3/16 inches across flats and 5/16 inches in overall length. The male thread engages the lower board or chassis while the female thread accepts the fastener for the upper board. It is installed by electronics assembly technicians, field service engineers, and industrial maintenance electricians.

This standoff is suited for circuit board assemblies in HVAC control panels, industrial enclosures, and electronics mounting applications where a secure, non-conductive-free metallic spacer is required. The 4-40 thread size is widely used in light-duty PCB stacking configurations. The passivated stainless steel construction makes it a reliable choice for environments exposed to moisture or mild chemical contact. Minimum order quantity is 10 pieces, sold as individual units per package.

Key Features

• 303 stainless steel construction with passivated finish per QQ-S-763 for corrosion resistance
• Male-female configuration allows PCB-to-PCB or PCB-to-chassis stacking
• 4-40 thread size on both male and female ends
• Overall body length of 5/16 inches (0.3125 inches) for precise board spacing
• Hex body at 3/16 inches across flats allows wrench or nutdriver installation
• Length tolerance of -0.005 to 0.005 inches ensures consistent stack height

Compatibility

Designed as a standard 4-40 male-female hex standoff for use in circuit board assemblies requiring 5/16-inch spacing. Compatible with any application using 4-40 threaded fasteners and a 3/16-inch hex drive.

Installation Notes

Installation is performed by hand or with a small nutdriver sized for a 3/16-inch hex body. Always de-energize and discharge the circuit board assembly before installing or removing standoffs. Avoid overtightening, which can strip the 4-40 threads or crack the PCB substrate. Follow applicable assembly standards for torque guidelines specific to your board material and application.