Electro Hardware P577M12F21-1032 Hex Standoff 10-32

Product Description

The ELECTRO HARDWARE P577M12F21-1032 is a female hex circuit board standoff designed to create precise, secure spacing between a PCB and a mounting surface or between stacked boards. Machined from Grade 2 steel with a zinc-plated clear chromate finish meeting ASTM B633 Type 1 and QQ-S-633 standards, this standoff delivers solid corrosion resistance in typical indoor electronic and control-panel environments. The hex body profile measures 0.25 inches across flats, allowing standard wrench or nut-driver installation. Overall length is 1.25 inches, with a length tolerance of -0.005 to 0.005 inches, making it suitable for assemblies that require tight dimensional control.

This standoff is used wherever a female-threaded 10-32 fastener interface is needed to mount or separate circuit boards in control panels, HVAC equipment boards, electrical enclosures, or similar electronic assemblies. The hex geometry keeps the standoff from spinning during installation and simplifies torque transfer. It is a standard inch-measurement fastener suitable for both OEM production runs and field-service board replacement work performed by electricians, controls technicians, and electronics assembly professionals.

Key Features

• Female 10-32 thread accepts standard 10-32 machine screws for secure board attachment
• Hex body at 0.25 inches across flats allows wrench or nut-driver tightening without spinning
• 1.25 inches overall length with tight tolerance of plus or minus 0.005 inches for precise board spacing
• Grade 2 steel construction provides reliable mechanical strength for panel and PCB mounting applications
• Zinc-plated clear chromate finish meets ASTM B633 Type 1 and QQ-S-633 for corrosion protection

Compatibility

Designed as an OEM-style replacement or service standoff for any circuit board assembly requiring a female 10-32 hex standoff with a 1.25-inch overall length in an inch-measurement fastener system.

Installation Notes

Installation is performed by electricians, controls technicians, or electronics assembly technicians. De-energize all control circuits and discharge any capacitors before handling circuit boards or replacing standoffs. Use a wrench or nut driver sized to 0.25 inches across flats to seat the standoff without over-torquing the hex body. Verify mating screw thread engagement is adequate before applying load to the board.