Electro Hardware S1103-M01-F21-J Circuit Board Spacer Brass

Product Description

The ELECTRO HARDWARE S1103-M01-F21-J is a round, female unthreaded circuit board spacer machined from brass and finished with a zinc plating that meets ASTM B633, QQ-B-626 Comp 22 Type 1 standards. It is designed to create a fixed standoff gap between a printed circuit board and a mounting surface or between stacked boards. The spacer accepts a No. 12 screw, measures 0.875 inches in overall length, 0.375 inches in outside diameter, and 0.219 inches in inside diameter with a bore tolerance of 0.000 to 0.010 inches. Electronics assemblers, electrical contractors, and industrial maintenance technicians install these spacers during panel builds and control board mounting applications.

This spacer is suited for use in electrical control panels, HVAC equipment boards, industrial enclosures, and any application requiring a reliable brass standoff with a No. 12 thread clearance. The female unthreaded bore allows a screw to pass through cleanly while the body holds consistent board-to-surface spacing. The zinc plating provides corrosion resistance in light-duty indoor environments, making the spacer appropriate for both OEM assembly and field service replacement in residential and light commercial equipment.

Key Features

• Female unthreaded bore accepts No. 12 screws for clean pass-through fastening
• Overall length of 0.875 inches provides a fixed, consistent standoff height
• Outside diameter of 0.375 inches with a round body for standard mounting cutouts
• Brass construction with zinc plating meeting ASTM B633 and QQ-B-626 Comp 22 Type 1
• Inside diameter tolerance of 0.000 to 0.010 inches and length tolerance of -0.005 to 0.005 inches for precise fit

Compatibility

Designed as an OEM-style replacement or assembly-grade standoff spacer for circuit board mounting applications requiring a No. 12 screw clearance and a 0.875-inch standoff height in inch-measurement systems.

Installation Notes

Installation is typically performed by electronics assemblers, electricians, or HVAC technicians during control board mounting or panel assembly. De-energize all equipment and discharge any capacitors before handling circuit boards or installing spacers. Hand-place the spacer over the mounting hole before seating the fastener to avoid misalignment. Follow applicable NEC guidelines when installing or replacing control boards inside listed electrical enclosures.