Electro Hardware MS1001M07F16D Round Circuit Board Spacer M3

Product Description

The ELECTRO HARDWARE MS1001M07F16D is a round, female unthreaded circuit board spacer machined from Grade 303 stainless steel to meet QQ-S-763 fastener standards. Designed for M3 screw sizes, it provides a precise standoff point between a printed circuit board and a mounting surface or between stacked boards. The spacer measures 1 mm in overall length with a 6 mm outside diameter and an inside diameter ranging from 3.2 mm to 3.6 mm. The uncoated bright finish maintains dimensional accuracy without added coating thickness, which is critical in tight PCB assemblies where stack height tolerances are closely controlled. Electronics technicians and electrical assembly professionals install this hardware during board mounting and chassis assembly operations.

This spacer is suited for metric-fastener PCB assemblies in commercial, industrial, and trade electrical applications where M3 hardware is the standard. Typical install scenarios include control board mounting in HVAC equipment, electrical enclosures, and industrial automation panels where stainless steel is specified for corrosion resistance or where ferrous hardware is unsuitable. The metric measurement system and M3 thread compatibility make it a direct fit for equipment manufactured to metric standards.

Key Features

• Grade 303 stainless steel construction meets QQ-S-763 fastener standard
• Female unthreaded body accepts M3 screws for secure board standoff
• 1 mm overall length with a length tolerance of -0.13 mm to 0.13 mm for precise stack height control
• Inside diameter 3.2 mm to 3.6 mm with a tolerance range of 0.000 mm to 0.270 mm
• 6 mm outside diameter with round body profile for consistent seating on PCB mounting pads
• Uncoated bright finish eliminates coating-thickness variability in tight-tolerance assemblies

Compatibility

Designed as an OEM-style metric spacer for printed circuit board assemblies using M3 fastener hardware in metric-standard equipment.

Installation Notes

Installation is performed by qualified electronics technicians or licensed electricians working on control board assemblies. De-energize all circuits and discharge any capacitors before handling PCBs or mounting hardware. Use calibrated torque tools appropriate for M3 fasteners to avoid cracking board substrate or deforming the spacer. Follow applicable NEC guidelines and equipment manufacturer instructions when replacing or installing control board mounting hardware inside electrical enclosures.