Electro Hardware MS1003M07F16F Round Circuit Board Spacer M4

Product Description

The ELECTRO HARDWARE MS1003M07F16F is a round, female unthreaded circuit board spacer engineered for M4 screw applications. Machined from Grade 303 stainless steel and left uncoated with a bright finish, this spacer provides reliable standoff support between a circuit board and a mounting surface. The overall length is 2 mm (approximately 0.079 inches), the outside diameter is 6 mm (approximately 0.236 inches), and the inside diameter ranges from 4.2 mm to 4.8 mm (approximately 0.165 to 0.189 inches). It conforms to fastener standard QQ-S-763. Electricians, electronics technicians, and control board service professionals use these spacers when securing PCBs inside control enclosures, HVAC control boxes, and similar assemblies.

This spacer is suited for metric fastener applications requiring a compact, low-profile standoff. At 2 mm overall length, it is appropriate for tight-clearance installations where minimal board-to-surface separation is needed. Typical use cases include circuit board mounting in residential and light commercial HVAC control panels, electrical enclosures, and industrial equipment where M4 hardware is the specified fastener size. The Grade 303 stainless steel construction resists corrosion, making it a practical choice for environments with occasional moisture exposure.

Key Features

• Grade 303 stainless steel construction for corrosion resistance
• Conforms to fastener standard QQ-S-763
• Female unthreaded body accepts M4 screw hardware
• Compact 2 mm overall length suits tight-clearance PCB mounting
• Bright, uncoated finish with inside diameter tolerance of 0 to 0.270 mm
• Round body shape for consistent, even standoff support

Compatibility

Designed as an OEM-style metric circuit board spacer for M4 screw installations in control board assemblies and electrical enclosures requiring a 6 mm OD, 2 mm standoff height.

Installation Notes

Installation is performed by electricians or electronics technicians familiar with PCB mounting hardware. Always de-energize the equipment and discharge any stored energy before servicing control boards or enclosures. Use appropriately sized M4 fasteners and avoid overtightening, which can crack the board substrate or deform the spacer. Verify clearance requirements against the board layout before specifying spacer height.