Overview
The PFC 00355-3200-402 is a 3/4″ alloy split lockwasher manufactured by Brighton with a thermal black oxide finish. Split lockwashers feature a helical spring design that applies continuous pressure under load, preventing nuts and bolts from loosening due to vibration and torque cycling. This box contains 100 washers, making it ideal for maintenance inventory, original equipment assembly, and high-volume fastening projects.
Key Features
- 3/4″ bore diameter fits standard 3/4″ threaded bolts
- Thermal black oxide coating for moderate corrosion resistance and durability in indoor/protected environments
- Alloy steel construction for strength and longevity in demanding applications
- Helical spring design grips both bolt head and bearing surface to resist vibration loosening
- Box of 100 units—economical bulk packaging for industrial use
- Meets standard split lockwasher specifications for medium-duty fastening
Technical Specifications
- Bore Diameter: 3/4″ (0.750″)
- Material: Alloy Steel
- Finish: Thermal Black Oxide
- Design: Split (helical spring) lockwasher
- Quantity per Box: 100 units
- Part Number: 00355-3200-402
- Manufacturer: Brighton
- Condition: New in box
Typical Applications
Split lockwashers are essential in any application where fasteners face vibration, shock loads, or thermal cycling. Common uses include:
- Heavy industrial machinery and equipment assembly
- Automotive and transportation fastening
- HVAC and mechanical systems
- Electrical cabinet and enclosure assembly
- General maintenance and repair across manufacturing facilities
- OEM component assembly in production environments
Compatibility & Replacements
Compatible With
- 3/4″ UNC and UNF threaded fasteners
- 3/4″ metric threaded bolts (M20)
- Standard bolt heads and cap screws
- Industrial fastening systems requiring vibration resistance
Replaces / Drop-In Replacement For
The PFC 18012807 0803206 variant designation indicates this is a standard 3/4″ split lockwasher. It is suitable as a direct replacement for comparable 3/4″ alloy split lockwashers with black oxide finish. Verify bore diameter and material specification with your system integrator or OEM documentation before ordering if cross-referencing to other brands.
Works With
- Any standard 3/4″ bolt or cap screw head
- Bearing plates and flat washers in stacked fastening assemblies
- Industrial hardware and maintenance kits
- OEM assembly lines using metric or inch fastening standards










