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Marine Fasteners RP-1422 Lock Washer 3/8in 316 Stainless Steel 100-Pack

Manufacturer

Marine Fasteners

<h3>About Marine Fasteners</h3><p>For decades, <strong>Marine Fasteners</strong> has built its reputation on a straightforward promise: stock quality hardware, keep plenty of it on the shelf, and back every order with knowledgeable customer service. Recognized as America's leading supplier of marine, solar, and industrial fasteners, the company has followed this philosophy since 1975. That long track record of reliability has made Marine Fasteners a go-to source for boatbuilders, solar installers, contractors, and industrial maintenance crews alike.</p><h3>A Specialist in Corrosion-Resistant Hardware</h3><p>What sets Marine Fasteners apart is its deep focus on materials engineered to survive punishing environments. The brand carries a full line of 304 and 316 stainless steel bolts, socket products, screws, nuts, washers, pins, and specialty fasteners, and also offers multiple secondary processes along with a proprietary line of chrome-plated inventory. This breadth of material options means customers can match the exact alloy grade to their application — whether that's a saltwater-exposed through-bolt on a boat deck or a structural anchor in a solar panel array.</p><p>With more than 35 years of thriving in demanding conditions and a team boasting over 700 years of combined experience, Marine Fasteners understands the nuances of stainless steel fastener requirements across a wide range of industries. That institutional knowledge translates directly into better product selection guidance and fewer costly specification mistakes.</p><h3>A Comprehensive Catalog Under One Roof</h3><p>The Marine Fasteners catalog spans an impressive range of hardware categories. Core product lines include bolts, nuts, screws and threaded products, washers, U-bolts, anchors, socket products, cable ties, rivets, rods and studs, snaps, hose cable and cushion clamps, clips and retaining rings, drill bits, pins, driver bits, hex keys, and kits and assortments. This single-source approach simplifies procurement for professionals who need a wide variety of fastener types without juggling multiple suppliers.</p><p>The brand also distributes specialty sub-lines to meet niche demands. The <strong>Fasco Fastener</strong> division — a proprietary Marine Fasteners line — covers packaged cable ties, packaged chrome fasteners, packaged cushion clamps, and packaged hose clamps, making it easy for retailers and distributors to merchandise pre-packaged hardware. For self-drilling applications, Marine Fasteners stocks the <strong>Elco</strong> product line, which includes 18-8 and bi-metal steel self-drilling screws in a range of diameters and lengths with Stalgard finish for superior corrosion protection.</p><h3>Materials Built for the Elements</h3><p>Choosing the right fastener material is critical in marine and outdoor environments. Stainless steel grades such as AISI 304 and AISI 316 are common choices due to their strength and corrosion resistance, with 316 offering superior resistance to chlorides found in seawater and deck hardware exposed to spray. Marine Fasteners stocks both grades across its full product range, along with silicon bronze, brass, nylon, aluminum, and hot-dip galvanized options to suit every substrate and exposure level.</p><p>Whether you're sourcing a few hundred bolts for a dock repair or placing a large industrial order for a manufacturing facility, Marine Fasteners has the inventory depth, material expertise, and product variety to get the job done right.</p>

Part Number

RP-1422
05/31/2036 9:47 PM
Sale Price

$14.75

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Marine Fasteners RP-1422 is a 100-piece pack of 3/8-inch split lock washers designed for use in marine, boating, and general fastening applications. Split lock washers — also known as helical spring lock washers — are an essential hardware component that helps prevent nuts and bolts from loosening due to vibration, movement, and torque over time.

Key Features:

  • Size: 3/8 inch inner diameter, compatible with 3/8" bolts and screws
  • Type: Split (helical spring) lock washer — creates spring tension and bite against mating surfaces to resist loosening
  • Pack Quantity: 100 pieces per package — ideal for stocking or large projects
  • Marine-Grade Application: Suited for use aboard boats, docks, trailers, and other marine environments
  • Function: Prevents fastener back-off caused by engine vibration, hull flex, and repeated mechanical stress

Split lock washers work by exerting a continuous spring force between the fastener and the mating surface. When a nut or bolt is tightened, the washer's sharp edges bite into both surfaces, creating resistance to rotation and dramatically reducing the risk of loosening. The Marine Fasteners RP-1422 100-piece pack is a convenient bulk option for marine technicians, boatbuilders, riggers, and DIY enthusiasts who need a reliable supply of this everyday essential fastener.

No shop around had the prop I needed. We had plans to fish but I hit a rock. The prop came in time to get back out on the water and get out limit!! Arrived next day!

Shipping was a bit expensive. Sure you folks didn't have anything to do with that. Would use you again.

Fast checkout

Super smooth transaction, and fast delivery. Just waiting for my mechanic to open packages and verify all correct parts, but I don't expect any issues. Would definitely purchase and recommend others do business with Motorsport.com again

None

I would have liked to have more info on the item I bought on the web sight, I ended having to start a chat to get information

Easy to order and affordable price.

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