Electro Hardware MMF1301M09F16M3 Hex Standoff M3x0.5

Product Description

The ELECTRO HARDWARE MMF1301M09F16M3 is a male-female hex circuit board standoff designed to space and secure printed circuit boards within electronic assemblies. The standoff features an M3 x 0.5 thread on both the male pin end and the female threaded bore, allowing boards to stack or mount at a fixed, repeatable distance. Manufactured from 303 stainless steel with a bright uncoated finish, this fastener meets the QQ-S-763 federal specification for stainless steel fasteners. The hex body measures 4.5 mm width across flats, allowing standard hex drivers and wrenches to seat and torque the fastener securely. Overall length is 9.76 mm with a body length of 5.00 mm and a thread depth of 6.40 mm.

This standoff is used in circuit board mounting applications across industrial controls, HVAC control boards, electrical enclosures, and electronic equipment assemblies. The male-female configuration allows multiple boards to be stacked in series or a single board to be elevated off a chassis or panel. The M3 metric thread size is common in compact control board assemblies and OEM electronic hardware. Installation is typically performed by electronics technicians, control board assemblers, or field service technicians replacing control board hardware in HVAC, electrical, or industrial equipment.

Key Features

• Male-female hex configuration supports single-board mounting or multi-board stacking
• M3 x 0.5 metric thread on both ends for consistent fastener compatibility
• 303 stainless steel construction meets QQ-S-763 federal specification
• Bright uncoated finish resists corrosion without added plating thickness
• Hex body at 4.5 mm width across flats accepts standard metric hex drivers
• Compact 9.76 mm overall length suits tight PCB clearance requirements

Compatibility

Designed as a standard metric M3 x 0.5 male-female hex standoff for use in circuit board mounting applications requiring QQ-S-763 compliant stainless steel hardware.

Installation Notes

Power down and de-energize all equipment before removing or installing circuit board standoffs. Use a metric hex driver or wrench sized to 4.5 mm width across flats to avoid rounding the hex body. Follow applicable equipment manufacturer guidelines for board mounting torque and hardware replacement procedures. Handle stainless steel fasteners carefully to avoid galling the threads during installation.