Electro Hardware S325M07F16C Circuit Board Spacer SS303

Product Description

The ELECTRO HARDWARE S325M07F16C is a round, female unthreaded circuit board spacer machined from Grade 303 stainless steel and finished bright uncoated. It accepts a No. 2 screw and provides a fixed 0.75 inch standoff between a PCB and its mounting surface. The 0.089 inch inside diameter and 0.1875 inch outside diameter give it a compact footprint suited to tight board layouts. Meeting the QQ-S-763 fastener standard, this spacer is installed by electronics technicians, HVAC control board assemblers, and field service technicians during board replacement or panel assembly work.

This spacer is used wherever a No. 2 screw pattern is required to mount or stack circuit boards in residential and commercial HVAC control panels, electrical enclosures, and similar equipment. Its stainless steel construction makes it appropriate for environments where mild corrosion resistance is needed. The female unthreaded body accepts a self-tapping or machine screw from below, creating a stable, vibration-resistant standoff between the board and chassis.

Key Features

• Grade 303 stainless steel construction meets QQ-S-763 fastener standard
• Female unthreaded body accepts No. 2 screw for secure PCB mounting
• 0.75 inch overall length provides consistent board standoff height
• 0.1875 inch outside diameter fits compact board layouts
• Bright uncoated finish resists corrosion without added coating thickness
• Length tolerance of -0.005 to 0.005 inches ensures consistent stack height

Compatibility

Designed as an OEM-style replacement or service spacer for circuit boards requiring a No. 2 screw, round body, female unthreaded standoff in a 0.75 inch overall length.

Installation Notes

Installation is typically performed by licensed HVAC technicians or qualified electricians during control board replacement or panel assembly. De-energize and lock out the equipment before handling any circuit board or internal panel component. Use a calibrated torque driver appropriate for No. 2 fasteners to avoid stripping the mating screw. Follow applicable NEC or equipment manufacturer guidelines for PCB mounting clearances.