Electro Hardware S1059-M01-F21-J Circuit Board Spacer Brass

Product Description

The ELECTRO HARDWARE S1059-M01-F21-J is a round, female unthreaded circuit board spacer designed to maintain precise clearance between a PCB and its mounting surface. Manufactured from brass and finished with a zinc plating that meets ASTM B633, QQ-B-626 Comp 22 Type 1 standards, this spacer measures 3/16 inches overall length, 0.375 inches outside diameter, and 0.219 inches inside diameter. It is sized for a No. 12 screw and suits applications where dimensional consistency and corrosion resistance are both required. Electronics assemblers, control board technicians, and industrial equipment installers use this type of spacer during board mounting operations.

This spacer is suited for use in residential and commercial electronics assemblies, HVAC control board installations, industrial panel builds, and any printed circuit board application requiring a female unthreaded standoff at a No. 12 screw size. The compact 3/16-inch length makes it appropriate for low-profile PCB mounting scenarios where minimal board-to-chassis clearance is needed. Its brass construction with zinc plating provides reliable performance in environments where mild corrosion resistance is a priority.

Key Features

• Female unthreaded design accepts a No. 12 screw for standard PCB mounting
• Brass base material with zinc plating meeting ASTM B633 and QQ-B-626 Comp 22 Type 1
• Overall length of 3/16 inches (0.1875 inches) with a tight length tolerance of -0.005 to 0.005 inches
• Inside diameter of 0.219 inches with an ID tolerance of 0.000 to 0.010 inches for consistent fitment
• Outside diameter of 0.375 inches for stable board support
• Round body shape for uniform load distribution across mounting points

Compatibility

Designed as an OEM-style replacement or new-install spacer for circuit board assemblies requiring a female unthreaded round standoff at No. 12 screw size in inch-measurement systems.

Installation Notes

Electronic assemblers and control board technicians should de-energize all equipment and discharge any stored electrical energy before handling or replacing circuit board spacers. Standard hand tools are sufficient for placement; no specialized torque equipment is required for unthreaded spacers of this type. Verify inside diameter clearance against the fastener shank before final assembly to ensure proper fitment within the stated ID tolerance range.