Electro Hardware S1111-M04-F16-H Circuit Board Spacer

Product Description

The ELECTRO HARDWARE S1111-M04-F16-H is a round, female unthreaded circuit board spacer machined from aluminum alloy grade T-3 to the QQ-A-225A Comp 2 fastener standard. It measures 1 inch overall length with a 0.171 inch inside diameter and a 0.375 inch outside diameter. The spacer accepts a number 8 screw and is supplied with an uncoated finish. It is used to create a fixed standoff gap between a printed circuit board and a chassis or mounting panel, keeping the board clear of conductive surfaces. Electricians, electronics technicians, and OEM assembly technicians install this hardware during panel builds and control board mounting tasks.

This spacer suits residential and light commercial applications wherever a PCB must be mounted at a controlled standoff height. Typical uses include control board mounting in HVAC equipment, electrical enclosures, and industrial control panels. The female unthreaded bore allows a screw to pass through from the board side and thread into a mating fastener or tapped hole below. The round body and consistent tolerances make it straightforward to install in high-density board layouts where consistent spacing is required.

Key Features

• Female unthreaded bore sized for a number 8 screw
• 1 inch overall length with a length tolerance of -0.005 to 0.005 inches
• 0.171 inch inside diameter with an ID tolerance of 0.000 to 0.010 inches
• 0.375 inch outside diameter round body
• Aluminum grade T-3 construction, uncoated finish
• Manufactured to QQ-A-225A Comp 2 fastener standard

Compatibility

Designed as a standard OEM-style round circuit board spacer for use with number 8 screw fastener systems in printed circuit board mounting applications.

Installation Notes

Installation is typically performed by an electrician or electronics technician during control board assembly or replacement. Always de-energize the equipment and follow applicable NEC guidelines before working inside any electrical enclosure. Verify that the mating screw length and thread engagement are appropriate for the mounting stack before final assembly. Do not overtighten fasteners through the unthreaded bore, as aluminum spacers can deform under excessive clamping load.