Electro Hardware MMF1803M09F16M4 Hex Standoff M4x0.7

Product Description

The ELECTRO HARDWARE MMF1803M09F16M4 is a male-female hex circuit board standoff designed for metric fastening applications in electronic assemblies. It features an M4 x 0.7 thread on both the male and female ends, a hexagonal body measuring 6 mm width across flats, and an overall length of 15.53 mm (approximately 0.611 inches). The standoff is machined from Grade 303 stainless steel with a bright, uncoated finish and meets the QQ-S-763 federal specification for stainless steel fasteners. Electronics assemblers, PCB technicians, and field service techs use this hardware to create precise board-to-board or board-to-chassis spacing in control panels, drives, and instrumentation enclosures.

This standoff is suited for metric PCB mounting applications in both industrial and commercial electronic assemblies. It installs wherever a stackable, threaded spacer is needed to maintain fixed clearance between circuit boards or between a board and a mounting surface. The male thread engages a mating female fastener or tapped hole on one end while the female thread accepts a screw or the male end of an adjacent standoff on the other, enabling modular board stacking configurations.

Key Features

• M4 x 0.7 thread on both male and female ends for standard metric engagement
• Grade 303 stainless steel construction for corrosion resistance in demanding environments
• Bright, uncoated finish - no coating to flake or interfere with electrical clearances
• Hexagonal body allows torque application with standard hex tools
• Meets QQ-S-763 federal stainless steel fastener specification
• Length tolerance of -0.150 mm to 0.150 mm for consistent board spacing

Compatibility

Designed as an OEM-style metric standoff for circuit board mounting applications requiring M4 x 0.7 threading and a 6 mm hex body profile.

Installation Notes

Installation is performed by electronics technicians or electricians during panel assembly or PCB service. Power down all equipment and discharge any capacitors before working in the enclosure. Use a properly sized hex driver or wrench matched to the 6 mm width across flats - do not use pliers, which can damage the hex faces or mar the uncoated finish. Torque to the fastener manufacturer's recommendation for M4 stainless hardware and verify board clearances after seating.