Electro Hardware MS1033M07F16D Round Circuit Board Spacer M3

Product Description

The ELECTRO HARDWARE MS1033M07F16D is a round, female unthreaded circuit board spacer designed for M3 screw applications in PCB mounting assemblies. Machined from Grade 303 stainless steel to the QQ-S-763 fastener standard, it delivers corrosion resistance and dimensional stability in both industrial and commercial electronics enclosures. The spacer measures 17 mm (0.669 inches) overall length with a 6 mm (0.236 inches) outside diameter and an inside diameter ranging from 3.2 mm to 3.6 mm (0.126 to 0.142 inches). The bright, uncoated finish is left natural for applications where surface conductivity or a clean metal appearance is required. Licensed electricians, electronics technicians, and panel builders are the primary installers.

This spacer is suited for PCB standoff applications in control panels, HVAC control boards, electrical enclosures, and industrial electronics assemblies requiring metric hardware. The M3 thread size and stainless steel construction make it appropriate for environments with moderate moisture exposure or where steel corrosion is a concern. It is sold individually but requires a minimum order quantity of 10 units, making it practical for service kits, panel builds, or component restocking.

Key Features

• Grade 303 stainless steel construction meets QQ-S-763 fastener standard
• Female unthreaded body accepts M3 screws for PCB standoff applications
• 17 mm (0.669 inches) overall length with tight length tolerance of -0.130 to 0.130 mm
• 6 mm (0.236 inches) outside diameter with 3.2 to 3.6 mm inside diameter range
• Bright, uncoated finish — no plating to affect conductivity or clearance dimensions
• Round body shape provides consistent contact surface against board substrate

Compatibility

Designed as a metric M3 female unthreaded round spacer for PCB mounting in control boards, electrical enclosures, and industrial panel assemblies requiring stainless steel hardware to the QQ-S-763 standard.

Installation Notes

Installation is performed by licensed electricians or electronics technicians during panel assembly or control board service. Power down and de-energize all circuits in the enclosure before inserting or removing board spacers. Use calibrated metric hand tools to avoid over-torquing M3 fasteners, which can crack PCB substrate or deform the spacer bore. Follow applicable NEC guidelines for enclosure assembly and hardware specifications.