Electro Hardware P529M09F16-440 Hex Standoff 4-40 0.5in

Product Description

The ELECTRO HARDWARE P529M09F16-440 is a female hex circuit board standoff designed to space and mount PCBs within electronic enclosures, control panels, and electrical assemblies. This standoff features a 4-40 female thread and measures 0.5 inches overall length with a hex body width across flats of 0.25 inches. Constructed from 18-8 grade 303 stainless steel with a bright anodized finish, it meets the QQ-S-763 fastener standard. The hex body profile allows installation with standard nut drivers or hex wrenches, providing a secure, non-rotating grip during installation and removal.

This standoff is suited for use in residential and commercial electronic control assemblies, HVAC control boards, industrial panel wiring, and general PCB mounting applications. The 4-40 thread size is common in low-voltage control circuitry and instrumentation hardware. The inch-measurement system and QQ-S-763 compliance make it a reliable choice for OEM replacements and field service repairs where stainless steel corrosion resistance is required.

Key Features

• Female 4-40 threaded hex standoff for PCB spacing and panel mounting
• 18-8 grade 303 stainless steel construction for corrosion resistance
• Bright anodized finish per QQ-S-763 fastener standard
• 0.5 inches overall length with 0.25 inches width across flats
• Hex body shape accommodates standard nut drivers and hex wrenches
• Length tolerance of -0.005 to 0.005 inches for precision fitment

Compatibility

Designed as a standard 4-40 female hex standoff for PCB mounting applications requiring 0.5 inches of board spacing in inch-measurement assemblies.

Installation Notes

Installation is performed by electricians, electronics technicians, or control board service professionals. De-energize all circuits and discharge any capacitors before handling PCB hardware. Use a properly sized nut driver or hex wrench matching the 0.25 inch across-flats dimension to avoid rounding the hex body. Follow applicable NEC guidelines for panel wiring and board mounting in electrical enclosures.