Electro Hardware 1310M09F16440 Hex Standoff 4-40 Ss

Product Description

The ELECTRO HARDWARE 1310M09F16440 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 303 stainless steel with a passivated finish per QQ-S-763, this standoff resists corrosion and withstands mechanical stress in demanding enclosure environments. The hex body shape allows wrench engagement for controlled installation torque. It measures 0.4063 inches overall length with a 3/16-inch width across flats and accepts a 4-40 thread on both the male pin end and the female threaded bore, with a thread depth of 1/4 inch on the female side and a thread length of 3/16 inch on the male end.

This standoff is suited for PCB assembly, control board stacking, and panel mounting applications found in industrial controls, HVAC control boards, electrical enclosures, and electronic equipment servicing. It is appropriate for any application requiring a compact, corrosion-resistant 4-40 threaded hex spacer in a hex body format. Electronics assembly technicians, control panel builders, and field service technicians working on circuit board replacement or repair will install this fastener where precise board-to-board or board-to-chassis standoff distance is required.

Key Features

• 303 stainless steel construction with passivated finish for corrosion resistance
• Meets QQ-S-763 federal specification for stainless steel fasteners
• 4-40 male-female threaded configuration for PCB stacking or chassis mounting
• Hex body shape enables wrench engagement for secure, controlled installation
• Compact 0.4063-inch overall length suits tight enclosure and board-stack clearances
• Length tolerance of -0.005 to 0.005 inch for consistent stack height

Compatibility

Designed for use in any PCB assembly or electronic enclosure application requiring a 4-40 threaded male-female hex standoff with a 3/16-inch width across flats and a 13/32-inch body length.

Installation Notes

Installation is typically performed by electronics assembly technicians or field service technicians during board replacement or control panel assembly. Power down and de-energize the equipment fully before handling circuit boards or installing standoffs. Use a correctly sized hex wrench or nut driver matched to the 3/16-inch flats to avoid rounding the hex body. Thread engagement should be verified on both the male pin and female bore ends to ensure proper seating and consistent board spacing.