Value Collection 3SWFI904 Countersunk Washer Ss 18-8

Product Description

The VALUE COLLECTION 3SWFI904 is a standard countersunk washer machined from 18-8 stainless steel. It measures 0.308 inches inside diameter, 0.767 inches outside diameter, and 0.131 inches thick. The countersunk profile seats flush-head fasteners — such as flat-head screws and bolts — allowing the fastener to sit level with or below the mating surface. The 18-8 stainless steel construction provides corrosion resistance suitable for wet, outdoor, and light chemical environments. This washer is used by plumbers, pipefitters, millwrights, and general maintenance technicians wherever a clean, flush fastener installation is required.

This countersunk washer is suited for residential and commercial fastening applications where flush-mount hardware is specified. Common uses include panel mounting, sheet metal assembly, cabinetry, marine hardware, and equipment enclosures. The 18-8 stainless material makes it appropriate for environments with moisture exposure or where ferrous hardware is not acceptable. It pairs with flat-head machine screws and similar countersunk fasteners in the corresponding diameter range.

Key Features

• 18-8 stainless steel construction for corrosion resistance in wet and outdoor environments
• Standard countersunk profile seats flat-head fasteners flush with the work surface
• 0.308 inches inside diameter fits standard screw sizes in the corresponding range
• 0.767 inches outside diameter provides adequate bearing surface area
• 0.131 inches thickness for consistent seating depth

Compatibility

Designed as a standard countersunk washer for use with flat-head fasteners requiring a flush seating surface across general mechanical, plumbing, and equipment assembly applications.

Installation Notes

Installation is performed by general maintenance technicians, pipefitters, or assembly personnel using standard hand tools. Ensure the mating surface countersink angle matches the washer profile before installation to achieve a proper flush seat. De-energize and isolate any equipment before disassembly or fastener replacement. Stainless steel hardware should be installed with anti-seize compound when thread galling is a concern.