3/8"-16 Stainless Steel Waxed Locknut – Marine Grade Nylock EZ Loader Boat Trailers 3342-100000

This 3/8"-16 18-8 stainless steel waxed locknut is a premium corrosion-resistant fastener designed for EZ Loader boat trailers, aluminum trailers, and any marine environment where hardware security and longevity matter. Manufactured from durable 18-8 stainless steel and factory-waxed for smoother installation, this locknut provides outstanding resistance against vibration, road shock, and saltwater exposure.

The built-in nylon locking insert (nylock-style) grips the threads to prevent loosening during towing, launching, and repetitive wave or highway vibration. The waxed coating adds a professional advantage—reducing thread galling (stainless-steel seizure), improving tightening consistency, and making future service or removal far easier.

This is a common hardware component found throughout modern EZ Loader and aftermarket boat trailers, especially where 3/8" mounting bolts are used for critical assemblies such as bunk brackets, winch stands, guide uprights, and fender mounts.

Key Features

3/8"-16 standard coarse thread — compatible with all 3/8" stainless and galvanized bolts

18-8 stainless steel (304) — high corrosion resistance for freshwater and saltwater environments

Waxed / lubricated finish — prevents stainless galling and makes installation/removal easier

Vibration-resistant locking insert — helps prevent fasteners from backing off during towing

Perfect for marine trailers — used in bunk hardware, winch posts, fenders, brackets, and structural assemblies

Safe for aluminum trailer frames — reduces thread binding and minimizes metal-to-metal reaction

Common EZ Loader & Marine Trailer Applications

Bunk bracket assemblies and pivot hardware

Guide-on pole brackets

Winch stands, bow stops, safety chains

Aluminum and galvanized trailer frame connections

Fender supports and step plates

Axle/leaf spring bolt retention (when stainless hardware is specified)

General high-vibration marine hardware replacement

Why WAXED Stainless Steel?

Stainless-to-stainless threads normally risk thread galling (cold welding). Waxed stainless hardware solves this by providing:

smoother tightening

reduced friction

easier removal years later

lower risk of binding or damaging the bolt

This makes waxed locknuts a superior choice for boat trailers exposed to salt, moisture, heat, and constant vibration.

Specifications

Size: 3/8"-16 (Standard coarse thread)

Material: 18-8 Stainless Steel (304)

Finish: Waxed, lubricated anti-seize coating

Type: Nylon-insert locknut

Use: Marine, trailer, outdoor, vibration-prone equipment