Electro Hardware S797-M07-F16-E Circuit Board Spacer No. 4

Product Description

The ELECTRO HARDWARE S797-M07-F16-E is a round, female unthreaded circuit board spacer designed for No. 4 screw applications in PCB mounting assemblies. Machined from 18-8 Grade 303 stainless steel and left uncoated, this spacer provides corrosion resistance and dimensional stability in panel, enclosure, and control board installations. It measures 0.3125 inches overall length with a 0.3125 inch outside diameter and a 0.116 inch inside diameter, keeping board surfaces elevated and isolated from mounting surfaces. Electricians, panel builders, and control system technicians use this type of hardware during board installation and enclosure assembly work.

This spacer is suited for use in residential and commercial control panel assemblies, HVAC control boards, electrical enclosures, and industrial PCB mounting applications wherever No. 4 fastener sizing is required. The female unthreaded design accepts a No. 4 screw passed through the board and spacer body, providing consistent standoff height between the circuit board and the mounting surface. Its stainless steel construction makes it appropriate for environments with moderate moisture or corrosion exposure.

Key Features

• Grade 18-8 303 stainless steel construction with uncoated finish for corrosion resistance
• Female unthreaded body accepts No. 4 screws for straightforward PCB standoff installation
• Overall length of 0.3125 inches with tight length tolerance of -0.005 to 0.005 inches
• Outside diameter of 0.3125 inches and inside diameter of 0.116 inches with tolerance of 0.000 to 0.010 inches
• Conforms to fastener standard QQ-S-763
• Round body shape for consistent seating against board and panel surfaces

Compatibility

Designed as an OEM-style replacement or new-installation spacer for circuit board mounting assemblies requiring a No. 4 screw, female unthreaded, round standoff with 0.3125 inch overall length and outside diameter.

Installation Notes

Installation is typically performed by electricians or panel technicians during control board assembly or enclosure build-out. Power down and de-energize the enclosure or panel completely before handling circuit boards or installing standoff hardware. Use the appropriate No. 4 fastener and confirm fit against inside diameter tolerance before final assembly. Follow applicable NEC guidelines for enclosure wiring and board mounting clearances.