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The VALUE COLLECTION 3SWFI905 is a standard countersunk washer manufactured from stainless steel. It measures 0.179 inches thick, with an inside diameter of 0.359 inches and an outside diameter of 0.966 inches. Countersunk washers are used to seat flat-head or oval-head fasteners flush with or below a surface, distributing load while allowing the fastener head to sit cleanly without protrusion. This washer is suited for plumbing, HVAC panel assembly, electrical enclosure work, and general mechanical fastening applications where a clean, flush finish is required.
This countersunk washer is appropriate for residential and light commercial applications wherever a flat-head fastener installation demands a flush or recessed finish. Typical use cases include equipment panel assembly, sheet metal work, and structural fastening in trade service environments. The stainless steel construction makes it suitable for installations where corrosion resistance is a priority, such as outdoor equipment mounting, wet areas, or coastal environments.
Designed as a standard countersunk washer for use with flat-head or oval-head fasteners in trade and mechanical assembly applications requiring a flush fastener finish.
Countersunk washers are installed by plumbers, HVAC technicians, electricians, and general trade mechanics during equipment assembly or panel fastening work. Always power down or de-energize equipment before accessing fastener points on electrical or HVAC enclosures. Ensure the mating surface countersink angle matches the washer profile before installation. Follow applicable NEC or mechanical code requirements for fastener selection in the specific application.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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