Electro Hardware S1339-M04-F16-H Circuit Board Spacer

Product Description

The ELECTRO HARDWARE S1339-M04-F16-H is a round, female unthreaded aluminum circuit board spacer designed to maintain precise standoff clearance between a PCB and a mounting surface or secondary board. It measures 3/16 inches overall length with a 0.5-inch outside diameter and a 0.171-inch inside diameter, sized for a number 8 screw. Manufactured from Aluminum Grade T-3 per fastener standard QQ-A-225A Comp 2, it delivers consistent dimensional accuracy with a length tolerance of -0.005 to 0.005 inches and an inside diameter tolerance of 0.000 to 0.010 inches. The uncoated finish keeps the surface ready for standard assembly without additional prep.

This spacer is used in electronic and electrical panel assemblies where a circuit board must be held at a fixed standoff distance from a chassis or enclosure wall. Typical applications include HVAC control board mounting, industrial panel fabrication, and general PCB assembly in residential and commercial equipment. Electricians and electronics technicians install these spacers during board replacement or new panel builds where vibration isolation and consistent board clearance are required.

Key Features

• Female unthreaded round body accepts a number 8 screw for straightforward board mounting
• Aluminum Grade T-3 construction per QQ-A-225A Comp 2 for consistent material quality
• 0.1875-inch overall length with tight length tolerance of -0.005 to 0.005 inches
• 0.5-inch outside diameter provides stable board support footprint
• 0.171-inch inside diameter with tolerance of 0.000 to 0.010 inches for reliable screw fitment
• Uncoated finish suitable for standard electrical and electronic assembly environments

Compatibility

Designed as a standard-dimension round circuit board spacer for use with number 8 screws in PCB mounting applications across HVAC, electrical panel, and general electronic assembly.

Installation Notes

Installation is typically performed by licensed electricians or electronics technicians during panel assembly or control board replacement. De-energize all circuits and follow lockout/tagout procedures before accessing any control board or panel. Use hand tools appropriate for number 8 fasteners and do not over-torque fasteners, as this is an unthreaded spacer. Verify spacer seating and board clearance before restoring power.