Electro Hardware S1335-M04-F16-I Circuit Board Spacer

Product Description

The ELECTRO HARDWARE S1335-M04-F16-I 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 is designed to create a fixed standoff gap between a printed circuit board and a mounting surface or secondary board. With an overall length of 0.125 inches, an inside diameter of 0.194 inches, and an outside diameter of 0.500 inches, this spacer fits a No. 10 screw and provides repeatable, precise positioning in inch-dimensioned assemblies. Electronics technicians, OEM assemblers, and field service professionals working on control boards in HVAC, industrial, or electrical equipment install this type of hardware during board mounting and replacement tasks.

This spacer is suited for use wherever a compact, low-profile standoff is needed to separate a circuit board from a chassis, DIN rail sub-plate, or secondary mounting panel. The uncoated aluminum finish is appropriate for indoor control panel assemblies and light-duty enclosure environments. Its small form factor and standard No. 10 screw compatibility make it a common choice during OEM production builds and service-replacement scenarios on residential and light commercial control boards.

Key Features

• Female unthreaded bore accepts No. 10 screws for straightforward board mounting
• Overall length of 0.125 inches provides a precise, low-profile standoff gap
• Outside diameter of 0.500 inches with inside diameter of 0.194 inches for consistent fitment
• Aluminum grade T-3 construction per QQ-A-225A Comp 2 fastener standard
• Length tolerance of -0.005 to 0.005 inches ensures dimensional repeatability
• Inside diameter tolerance of 0.000 to 0.010 inches for controlled screw fit
• Uncoated finish - no additional treatment required for standard indoor panel use

Compatibility

Designed as a standard inch-dimensioned round circuit board spacer for assemblies using No. 10 screw hardware. Suitable for control board mounting applications in HVAC, electrical, and industrial equipment where a female unthreaded aluminum standoff of this size is specified.

Installation Notes

Installation is typically performed by electronics technicians or licensed service professionals during circuit board mounting or replacement. Power down the equipment and discharge any stored energy in the control circuit before handling circuit boards or fastening hardware. Standard hand tools are sufficient for seating these spacers. Verify that the mating screw length accounts for the spacer overall length to avoid over-compression of the board or under-engagement of the fastener.