Electro Hardware MS1005M04F16F Round Pcb Spacer M4

Product Description

The ELECTRO HARDWARE MS1005M04F16F is a round, female unthreaded circuit board spacer designed for M4 screw applications in electronic and electrical assemblies. Machined from aluminum alloy grade T3 to the QQ-A-225A Comp 2 fastener standard, it provides a rigid, lightweight standoff between a PCB and its mounting surface. The spacer measures 3 mm overall length with a 6 mm outside diameter and an inside diameter ranging from 4.2 to 4.8 mm, with a length tolerance of -0.13 to 0.13 mm. The uncoated bright finish leaves the aluminum surface bare, suitable for applications where conductivity or further surface treatment is required. Electronics technicians, electrical panel assemblers, and field service techs working on control boards and automation equipment install this type of hardware routinely.

This spacer is used in residential and commercial electronic control board assemblies, industrial automation panels, HVAC control modules, and other applications where an M4 fastener is used to mount a PCB at a fixed standoff height. The 3 mm OAL makes it appropriate for low-profile mounting configurations where minimal clearance is needed between the board and the chassis or enclosure surface. It is a metric-dimensioned component suited for OEM assembly lines and field repair applications alike.

Key Features

• Female unthreaded round body accepts M4 screw hardware
• 3 mm overall length for low-profile PCB standoff applications
• 6 mm outside diameter with 4.2 to 4.8 mm inside diameter range
• Aluminum grade T3 construction — lightweight and corrosion-resistant
• Meets QQ-A-225A Comp 2 fastener standard
• Uncoated bright finish suitable for bare-metal or further-treated assemblies

Compatibility

Designed as an OEM-style replacement or assembly component for circuit board mounting applications requiring an M4 screw size round female unthreaded spacer with a 3 mm standoff height.

Installation Notes

Installation is performed by electronics technicians or electrical assemblers during board mounting or control module service. De-energize and lockout the equipment before accessing any control board or panel. Use appropriately sized M4 fasteners and do not overtighten, as aluminum spacers can deform under excessive clamping force. Follow applicable assembly drawings and any relevant NEC or equipment manufacturer guidelines for control board mounting clearances.