Electro Hardware 1459M09F16-440 Hex Standoff 4-40

Product Description

The ELECTRO HARDWARE 1459M09F16-440 is a male-female hex circuit board standoff designed to create fixed spacing between stacked PCBs or between a circuit board and a mounting surface. Machined from 18-8 and Grade 303 stainless steel with an anodized finish, this standoff meets the QQ-S-763 fastener standard. It features a 4-40 thread size, an overall length of 1.4375 inches (1-7/16 inches), a hex body width across flats of 0.25 inches, and a body length of 1.25 inches. Electricians, electronics technicians, and control board service professionals use this hardware in panel assemblies, control enclosures, and instrumentation builds.

This standoff is suited for use in light commercial and residential control panels, HVAC control board assemblies, electrical enclosures, and similar applications where a corrosion-resistant, thread-through spacer is required. The male-female configuration allows daisy-chaining of multiple standoffs or direct fastening of a mating board using a standard 4-40 machine screw. The hex body shape enables wrench engagement for secure, torque-controlled installation in tight assemblies.

Key Features

• 4-40 male-female thread configuration supports stacked PCB assemblies
• Overall length of 1.4375 inches with a body length of 1.25 inches and thread length of 3/16 inches
• Hex body with 0.25 inch width across flats allows wrench tightening
• 18-8 and Grade 303 stainless steel construction resists corrosion
• Anodized finish provides additional surface protection
• Meets QQ-S-763 fastener standard
• Length tolerance of -0.005 to 0.005 inches for precision fitment

Compatibility

Designed as a standard 4-40 inch-series hex standoff for use in circuit board mounting, control enclosure assemblies, and instrumentation panels wherever a 4-40 male-female stainless steel spacer is specified.

Installation Notes

Installation is typically performed by electronics technicians or licensed electricians working on control boards or panel assemblies. De-energize all circuits and discharge any capacitors before handling PCBs or standoffs within live enclosures. Use a hex wrench or nut driver sized to the 0.25 inch flats to tighten the standoff without over-stressing the board. Follow applicable NEC guidelines when installing within electrical enclosures.