Electro Hardware S309M17F16C Circuit Board Spacer Nylon

Product Description

The ELECTRO HARDWARE S309M17F16C is a round, female unthreaded circuit board spacer designed to maintain precise standoff clearance between a PCB and a mounting surface or adjacent board. Built to MIL-P-17091B fastener standards, it accepts a Number 2 screw and is molded from Nylon Grade 101 for lightweight, non-conductive performance. The spacer measures 0.5 inches in overall length with a 0.089-inch inside diameter and a 0.1875-inch outside diameter. Its uncoated finish and nylon construction make it well suited for electronics assembly environments where electrical isolation and dimensional consistency are required. Licensed electricians, electronics assemblers, and HVAC control board technicians commonly use this hardware during board mounting and replacement work.

This spacer is used in residential and commercial electronics assembly, control board installations, and PCB mounting applications where a Number 2 screw pattern is specified. It is appropriate for any application requiring a compact, non-conductive round standoff with tight dimensional tolerances, including furnace control boards, HVAC low-voltage wiring panels, and general electronic equipment enclosures. Its small form factor and nylon material make it a reliable choice in both OEM production and field-service replacement scenarios.

Key Features

• Nylon Grade 101 construction provides electrical isolation and corrosion resistance
• Meets MIL-P-17091B fastener standard for dimensional and material consistency
• Female unthreaded body accepts Number 2 screws for secure board standoff
• 0.5-inch overall length with tight length tolerance of -0.005 to 0.005 inches
• Inside diameter tolerance of 0.000 to 0.010 inches ensures consistent screw fit
• Uncoated bright finish suitable for electrically sensitive PCB environments

Compatibility

Designed as an OEM-style replacement or assembly-grade spacer for circuit board mounting applications requiring a round, female unthreaded Number 2 screw standoff in the inch measurement system.

Installation Notes

Installation is typically performed by licensed electricians or electronics technicians during control board mounting or replacement. Always de-energize the equipment and verify zero voltage before handling circuit boards or fastening hardware. Use a Number 2 screw with appropriate driver to avoid stripping the unthreaded nylon body. Follow applicable NEC guidelines and equipment manufacturer torque recommendations when securing PCBs in enclosed panels.