Electro Hardware MS1045M07F16F Circuit Board Spacer M4

Product Description

The ELECTRO HARDWARE MS1045M07F16F is a round, female unthreaded circuit board spacer designed to maintain precise standoff distances between PCBs and mounting surfaces in electronic assemblies. Machined from Grade 303 stainless steel to the QQ-S-763 fastener standard, this spacer offers corrosion resistance and dimensional stability in demanding environments. It has an overall length of 23 mm (approximately 0.906 inches), an outside diameter of 6 mm (approximately 0.236 inches), and an inside diameter range of 4.2 to 4.8 mm (approximately 0.165 to 0.189 inches) to accept M4 screws. The uncoated bright finish keeps the surface clean and free of coating buildup that could affect fit tolerance.

This spacer is suited for use in HVAC control boards, electrical enclosure assemblies, variable-frequency drives, and similar trade-grade electronic equipment where reliable PCB mounting hardware is required. Installers and panel builders working on commercial or residential electronic controls will find this spacer appropriate for any application requiring a metric M4 standoff with a 23 mm stack height and a round stainless body.

Key Features

• Grade 303 stainless steel construction meets QQ-S-763 fastener standard for corrosion resistance
• Female unthreaded design accepts M4 screws with inside diameter range of 4.2 to 4.8 mm
• Overall length of 23 mm with a tight length tolerance of -0.13 to 0.13 mm for precise standoff control
• 6 mm outside diameter with round body profile for consistent seating against PCB surfaces
• Bright uncoated finish maintains dimensional integrity without coating-related dimensional variation
• Minimum order quantity of 10 units supports component-level procurement for service and assembly work

Compatibility

Designed as a metric M4 PCB standoff spacer for use in circuit board assemblies requiring a female unthreaded round spacer with a 23 mm overall length and 6 mm outside diameter.

Installation Notes

Installation should be performed by qualified electronics technicians or licensed electricians familiar with PCB mounting hardware. De-energize all equipment and discharge any stored energy before working inside control enclosures or panels. Use properly sized M4 fasteners and avoid over-tightening, which can distort the board or damage the spacer seating surface. Follow applicable NEC guidelines and equipment manufacturer specifications when servicing or assembling control panels.