Electro Hardware MP413M03F21M3 Female Hex Standoff M3

Product Description

The ELECTRO HARDWARE MP413M03F21M3 is a female hex circuit board standoff designed to create fixed spacing between a PCB and a mounting surface or between stacked boards. Machined from brass with a clear zinc chromate finish meeting ASTM B633 Type 1 and QQ-B-626 Comp 22 specifications, this standoff delivers corrosion resistance and reliable thread engagement in tight electronic assemblies. The body is fully threaded to a depth of 7 mm on an M3 x 0.5 thread, providing maximum thread contact for secure fastening. Electronics assemblers, panel builders, and field service technicians working on control boards, drives, and enclosure sub-assemblies commonly install this hardware.

This standoff is suited for metric-threaded circuit board mounting applications in commercial and industrial electronic assemblies. The hex body profile allows installation and removal with standard nut drivers or hex wrenches, making it practical for production environments and service work alike. With an overall length of 7 mm and a width across flats of 4.5 mm, it fits compact board layouts where spacing and clearance are critical. It is appropriate for use wherever an M3 x 0.5 female threaded spacer is required in a PCB stack-up.

Key Features

• M3 x 0.5 female thread, fully threaded to 7 mm depth for maximum engagement
• Brass construction with clear zinc chromate finish for corrosion resistance
• Meets ASTM B633 Type 1 and QQ-B-626 Comp 22 finish standards
• Hex body profile - 4.5 mm width across flats - accepts standard nut drivers
• Compact 7 mm overall length suits tight PCB stack-up clearances
• Length tolerance held to -0.13 to 0.13 mm for consistent board spacing

Compatibility

Designed as an OEM-style replacement or new-installation standoff for any circuit board assembly requiring an M3 x 0.5 female hex threaded spacer with a 7 mm overall length.

Installation Notes

Installation is performed by electronics assemblers or technicians working on control boards and panel enclosures. Always de-energize and discharge the board assembly before installing or removing standoffs. Use a correctly sized nut driver matched to the 4.5 mm hex to avoid rounding the flats. Do not overtighten - brass threads can strip if torque is applied beyond hand-tight plus a controlled snug turn.