Electro Hardware S1127-M04-F16-J Circuit Board Spacer Aluminum

Product Description

The ELECTRO HARDWARE S1127-M04-F16-J is a round, female unthreaded aluminum circuit board spacer designed to create precise standoff clearance between a PCB and a mounting surface. It accepts a number 12 screw, measures 1.25 inches in overall length, and features an inside diameter of 0.219 inches with an outside diameter of 0.375 inches. Manufactured from T-3 grade aluminum to the QQ-A-225A Comp 2 fastener standard, this spacer is supplied uncoated. Electricians, electronics technicians, and control board installers use this type of hardware when mounting circuit boards in HVAC control enclosures, electrical panels, and similar equipment assemblies.

This spacer is suited for residential and light commercial applications wherever a number 12 screw is used to mount a PCB or control board assembly. Common install scenarios include securing HVAC control boards, relay boards, and other electronic assemblies inside equipment enclosures where consistent standoff height and board protection from conductive surfaces are required. The 1.25-inch overall length provides substantial clearance for component clearance on the back side of a board.

Key Features

• Female unthreaded round body accepts a number 12 screw for secure PCB mounting
• 1.25-inch overall length with tight length tolerance of -0.005 to 0.005 inches
• Inside diameter of 0.219 inches with tolerance of 0.000 to 0.010 inches for consistent fit
• Outside diameter of 0.375 inches provides a compact footprint on crowded boards
• T-3 grade aluminum construction per QQ-A-225A Comp 2 fastener standard
• Uncoated finish eliminates coating thickness variability in tight-clearance assemblies

Compatibility

Designed as an OEM-style round circuit board spacer for use with number 12 screws in PCB mounting applications across HVAC, electrical, and electronic control assemblies.

Installation Notes

Installation is performed by electricians or electronics technicians during control board assembly or replacement. Always de-energize the equipment and follow lockout/tagout procedures before working inside any electrical enclosure. Seat the spacer squarely against the mounting surface before inserting the screw to prevent board flex or cracking. Do not overtighten the fastener, as aluminum spacers can deform under excessive clamp load.