Electro Hardware S1063-M10-F21-H Round Board Spacer No. 8

Product Description

The ELECTRO HARDWARE S1063-M10-F21-H is a round, female unthreaded circuit board spacer designed to create a fixed standoff gap between a PCB and its mounting surface. Machined from Grade 2 steel with a zinc-plated finish per ASTM B633 and QQ-S-633 Type 1, this spacer measures 0.25 inches overall length with a 0.171-inch inside diameter and a 0.375-inch outside diameter. It is sized for No. 8 screw hardware. The zinc plating provides corrosion resistance in control panel and enclosure environments. Electrical and HVAC technicians commonly use spacers like this when mounting control boards inside equipment enclosures.

This spacer is suited for use in residential and commercial electronic assemblies, control boards, and equipment enclosures where a low-profile standoff is required. It accommodates No. 8 fasteners and is appropriate for any application requiring a precise 0.25-inch board-to-surface gap. Typical install scenarios include PCB mounting inside HVAC control panels, electrical enclosures, and similar equipment where board isolation and spacing are required for airflow, insulation, or vibration management.

Key Features

• Female unthreaded body accepts No. 8 screw hardware
• 0.25-inch overall length provides consistent board standoff height
• 0.375-inch outside diameter round body for stable surface contact
• Grade 2 steel construction with zinc-plated finish per ASTM B633 and QQ-S-633 Type 1
• Inside diameter tolerance of 0.000 to 0.010 inches for consistent fit
• Length tolerance of -0.005 to 0.005 inches for precise stack height

Compatibility

Designed as a standard OEM-style round circuit board spacer for No. 8 screw hardware in electronic and electrical enclosure assemblies.

Installation Notes

Installation is performed by electricians or electronics technicians during control board mounting or replacement. De-energize all circuits before working inside any enclosure and verify power is off with an appropriate meter. Seat the spacer flush against the mounting surface before driving the fastener to prevent board flex or stress. Do not overtighten the fastener through an unthreaded spacer, as it can deform the body or crack the PCB.