Electro Hardware S517-M07-F16-G Circuit Board Spacer 6 Screw

Product Description

The ELECTRO HARDWARE S517-M07-F16-G is a round, female unthreaded circuit board spacer machined from 18-8 Grade 303 stainless steel to meet fastener standard QQ-S-763. It accepts a No. 6 screw and holds a 0.3125-inch overall length with an outside diameter of 0.25 inches and an inside diameter of 0.141 inches. The uncoated finish leaves the base material exposed for applications where coating buildup or outgassing is a concern. Electronics technicians, electrical contractors, and control board assemblers use this spacer to maintain consistent standoff distance between a circuit board and a mounting surface.

This spacer is suited for residential and light commercial control board assemblies, HVAC equipment circuit boards, electrical enclosure builds, and similar low-voltage electronics mounting applications. Its stainless steel construction makes it appropriate for environments with moderate moisture exposure or where corrosion resistance is a priority. The female unthreaded body accepts a No. 6 fastener passed through from the board side, making it a straightforward fit for standard PCB mounting configurations.

Key Features

• 18-8 Grade 303 stainless steel construction meets fastener standard QQ-S-763
• Female unthreaded body sized for No. 6 screw
• Overall length of 0.3125 inches with a tight length tolerance of -0.005 to 0.005 inches
• Outside diameter of 0.25 inches and inside diameter of 0.141 inches with ID tolerance of 0.000 to 0.010 inches
• Uncoated finish - no added coating thickness to affect fit or clearance
• Round body shape for consistent seating against PCB mounting holes

Compatibility

Designed as a standard No. 6 screw female unthreaded round circuit board spacer for PCB standoff applications requiring a 0.3125-inch overall length and 0.25-inch outside diameter in stainless steel.

Installation Notes

Power down all equipment and discharge any stored energy before working on circuit board assemblies. This spacer is installed by electrical or electronics technicians following applicable NEC guidelines for control wiring and low-voltage circuit work. Use the correct No. 6 fastener and avoid overtightening, which can distort the unthreaded bore. Verify the spacer seats flush against the mounting surface before securing the board.