Electro Hardware P373M09F16440 Hex Standoff 4-40 1.5in Ss

Product Description

The ELECTRO HARDWARE P373M09F16440 is a female hex circuit board standoff machined from 303 stainless steel with a plain, bright uncoated finish. It accepts a 4-40 thread and measures 1.5 inches overall length with a 3/16-inch width across flats and a 1/4-inch thread depth. This standoff is used to mount and space printed circuit boards within enclosures, control panels, and electronic assemblies. It is installed by electricians, electronics technicians, and panel builders who need a corrosion-resistant, female-threaded spacer that provides a secure, fixed standpoint between a PCB and a mounting surface.

This standoff suits residential and commercial applications wherever a 4-40 threaded female hex spacer is required. Typical install scenarios include control board mounting inside HVAC units, electrical enclosures, industrial panel assemblies, and PCB stacking configurations. The hex body shape allows for wrench or socket installation when access is tight, and the stainless steel construction holds up in humid or corrosive service environments without plating concerns.

Key Features

• Female 4-40 thread accepts standard machine screws for secure PCB mounting
• 303 stainless steel construction resists corrosion without additional coating
• Hex body shape allows positive wrench engagement for torque-controlled installation
• Plain bright finish meets QQ-S-763 fastener standard
• Tight length tolerance of -0.005 to 0.005 inches ensures consistent board standoff height
• 1/4-inch thread depth provides solid thread engagement for small fasteners

Compatibility

Designed as a direct-fit replacement or new-installation hex standoff for any application requiring a 4-40 female threaded hex spacer with a 1.5-inch overall length and a 3/16-inch hex body.

Installation Notes

Installation is performed by electricians or electronics technicians using a 3/16-inch wrench or socket on the hex body. De-energize and discharge all circuits before working on or near mounted circuit boards. Avoid overtightening, as the 4-40 thread is fine and subject to galling on stainless fasteners; use anti-seize compound if repeated removal is expected. Follow applicable NEC guidelines for panel and enclosure work.