Electro Hardware S513M17F16G Round Circuit Board Spacer

Product Description

The ELECTRO HARDWARE S513M17F16G is a round, female unthreaded circuit board spacer designed to maintain precise standoff distance between a PCB and a mounting surface or secondary board. Molded from Nylon Grade 101 and left uncoated, this spacer accepts a No. 6 screw through its 0.141 inch inside diameter bore. The overall length is 0.25 inches, with an outside diameter of 0.25 inches. Manufactured to MIL-P-17091B, it provides consistent dimensional tolerances suitable for production and repair applications in electronics assemblies found across HVAC control boards, electrical panels, and related trade equipment.

This spacer is used wherever a No. 6 fastener is employed to secure a printed circuit board at a fixed standoff height of 0.25 inches. Common applications include residential and commercial HVAC control board assemblies, electrical enclosure PCB mounting, and general electronic equipment repair. The nylon construction makes it appropriate for environments where electrical isolation between the board and chassis is required. It is sold individually but carries a minimum order quantity of 100 units, making it suited for shop stock and production use.

Key Features

• Female unthreaded bore accepts No. 6 screws for straightforward PCB standoff mounting
• Nylon Grade 101 construction provides electrical isolation and corrosion resistance
• Meets MIL-P-17091B fastener standard for dimensional and material consistency
• Uncoated bright finish with inside diameter tolerance of 0.000 to 0.010 inches
• Compact 0.25 inch OAL and 0.25 inch OD fit tight board clearances
• Length tolerance held to -0.005 to 0.005 inches for repeatable stack-up control

Compatibility

Designed as a standard No. 6 screw circuit board spacer for PCB mounting applications requiring a 0.25 inch standoff height and female unthreaded body in an inch-measurement fastener system.

Installation Notes

Installation is performed by electricians, electronics technicians, or HVAC service professionals during control board replacement or assembly work. De-energize all circuits and discharge any capacitors before handling circuit boards or fasteners. Use a properly sized No. 6 screw and avoid over-torquing, which can crack the nylon body. Verify standoff height requirements against the board manufacturer's documentation before selecting spacer length.