Electro Hardware S1063-M01-F21-H Circuit Board Spacer Brass

Product Description

The ELECTRO HARDWARE S1063-M01-F21-H is a round, female unthreaded circuit board spacer designed to create a fixed standoff gap between a PCB and a mounting surface or adjacent board layer. Sized for a No. 8 screw, it measures 0.25 inches in overall length with an inside diameter of 0.171 inches and an outside diameter of 0.375 inches. The body is machined from brass and finished with a zinc plating that meets ASTM B633 and QQ-B-626 Comp 22 Type 1 standards. Electronics assemblers, electricians, and control-board technicians use this spacer in panel assemblies, control boards, and enclosure builds where precise PCB standoff height and corrosion resistance are required.

This spacer is suited for residential and commercial electrical and electronic control assemblies where a No. 8 fastener pattern is used. Typical applications include HVAC control board mounting, industrial panel assemblies, and general PCB installation where a round brass standoff with zinc plating is specified. The female unthreaded design accepts a screw from one side and seats flush against the board surface, maintaining consistent spacing without threading into the spacer body.

Key Features

• Female unthreaded round body sized for No. 8 screw applications
• Brass construction with zinc plating per ASTM B633 and QQ-B-626 Comp 22 Type 1
• Overall length of 0.25 inches with a tight length tolerance of -0.005 to 0.005 inches
• Inside diameter of 0.171 inches with a tolerance of 0.000 to 0.010 inches for consistent fitment
• Outside diameter of 0.375 inches for stable board contact footprint
• Compact round profile suits dense PCB layouts and control panel enclosures

Compatibility

Designed as an OEM-style replacement or new-install spacer for circuit board assemblies that use a No. 8 screw pattern and require a 0.25-inch standoff height.

Installation Notes

De-energize all circuits and discharge any capacitors before handling or replacing circuit board hardware. Use appropriately sized No. 8 fasteners and verify clearance dimensions against the PCB mounting hole layout prior to installation. Follow applicable NEC guidelines for panel and enclosure work. Avoid overtightening fasteners through the spacer, as the unthreaded bore does not engage the screw thread and excess clamp load can crack the board substrate.