RPI RPH179 3/8” Internal Tooth Washer

Yes, these washers are manufactured from high-quality stainless steel. This material provides excellent resistance to both wear and corrosion, making them ideal for long-term reliability in various mechanical environments.

Absolutely. The internal tooth design is engineered specifically for locking applications. When tightened, the small, precisely cut teeth along the inner circumference bite securely into the mating surface, providing superior resistance to vibration.

Yes, these are excellent for general shop aids and maintenance tasks. They are designed for reliable fastening in assembly applications where keeping hardware secure is essential.

Yes, these are precisely sized at 3/8-inch, ensuring they pair perfectly with standard fasteners of that diameter where dependable locking action is required.

Each order includes a convenient, bulk supply of 50 washers, providing a cost-effective solution for your shop’s inventory and hardware needs.

Yes, for those requiring a wider variety of hardware, these components are also available as part of the Lockwasher Kit (RPI Part #RPK413).

Yes, you can be assured of quality, as every batch of RPI RPH179 washers is supplied as Factory New stock.

The design features precisely cut, inward-facing teeth. This functional geometry is specifically engineered to maximize the biting action against the mating surface upon tightening, ensuring a secure hold.

They are best used in applications requiring vibration resistance, such as:

• Securing machine components.
• Assembling equipment.
• Any fastening task where vibration might cause hardware to loosen over time.

Yes, referencing RPI Part #RPH179 allows you to identify and order the exact specification required for your specific maintenance and assembly projects.