Electro Hardware MP417M03F21M3 Hex Board Standoff M3

Product Description

The ELECTRO HARDWARE MP417M03F21M3 is a female hex circuit board standoff designed to create precise, secure spacing between PCBs and mounting surfaces. Manufactured from brass with a clear zinc chromate finish that meets ASTM B633 Type 1 and QQ-B-626 Comp 22 standards, this standoff accepts an M3 x 0.5 threaded fastener. The overall length is 9 millimeters with a fully threaded interior at 9 millimeters thread depth, and the hex body measures 4.5 millimeters across the flats. Electronics assembly technicians, PCB assemblers, and field service engineers install these in control boards, industrial enclosures, and electronic assemblies where consistent board-to-surface standoff height is required.

This standoff is suited for metric-threaded circuit board mounting applications in commercial and industrial electronics, HVAC control boards, electrical enclosures, and similar assemblies. The M3 x 0.5 thread size is a widely used metric standard in low-profile PCB mounting configurations. The brass base material provides good electrical conductivity and corrosion resistance, while the zinc plating adds additional surface protection in moderately demanding environments.

Key Features

• M3 x 0.5 female thread, fully threaded to full 9 millimeter depth
• Hex body shape with 4.5 millimeter width across flats for wrench engagement
• Brass construction with clear zinc chromate finish for corrosion resistance
• Meets ASTM B633 Type 1 and QQ-B-626 Comp 22 standards
• Length tolerance held to -0.13 to 0.13 millimeters for consistent board spacing
• Minimum order quantity of 10 units per order

Compatibility

Designed as an OEM-style replacement or direct-install metric standoff for M3 x 0.5 threaded circuit board mounting applications in electronic assemblies and control enclosures.

Installation Notes

Installation is performed by electronics assembly technicians or field service personnel. Power down and de-energize all circuits before installing or removing standoffs from any live control board or enclosure. Use an appropriately sized hex driver or wrench matched to the 4.5 millimeter across-flats hex body to avoid rounding the standoff. Follow applicable enclosure and equipment manufacturer torque guidelines when seating fasteners into the female thread.