Electro Hardware S1343-M07-F16-K Circuit Board Spacer

Product Description

The ELECTRO HARDWARE S1343-M07-F16-K is a round, female unthreaded circuit board spacer machined from 18-8 and 303 grade stainless steel. It provides a precise standoff between a PCB and a mounting surface, maintaining consistent board elevation and preventing electrical contact with chassis components. The spacer accepts a 1/4-inch screw, measures 0.25 inches in overall length, and carries an inside diameter of 0.257 inches with an outside diameter of 0.5 inches. The uncoated stainless steel construction meets the QQ-S-763 fastener standard, making it suitable for environments where corrosion resistance is a priority. Electronics technicians, panel builders, and field service techs working on control boards in HVAC, pool, and electrical equipment commonly use this style of spacer.

This spacer is appropriate for use in residential and light commercial control board assemblies where a 1/4-inch screw mount is required. It is used during PCB installation or replacement in equipment enclosures, load centers, and control panels where maintaining a secure, consistent standoff distance between the board and the mounting surface is critical to proper operation and heat dissipation. The round body shape and tight length tolerance of -0.005 to 0.005 inches ensure repeatable fitment across production or repair applications.

Key Features

• Female unthreaded round body accepts 1/4-inch screw for secure PCB mounting
• 18-8 and 303 grade stainless steel construction meets QQ-S-763 fastener standard
• Overall length of 0.25 inches with tight tolerance of -0.005 to 0.005 inches
• Inside diameter of 0.257 inches with tolerance of 0.000 to 0.010 inches
• Outside diameter of 0.5 inches for stable contact footprint on board surface
• Uncoated finish suitable for corrosion-resistant applications without added coating thickness

Compatibility

Designed as an OEM-style replacement or new-installation spacer for circuit board mounting applications requiring a 1/4-inch screw, 0.25-inch standoff height, and 0.5-inch outside diameter in an inch-measurement system.

Installation Notes

Installation is performed by electronics technicians or trained field service professionals. De-energize all equipment and discharge any capacitors before handling control boards or installing spacers. Use a calibrated torque driver appropriate for 1/4-inch fasteners to avoid cracking the PCB substrate. Verify spacer seating is flush and uniform across all mounting points before securing the board.