Best Steel Locknuts in 2026

【High Quality Stainless】These Lock Nuts are 100% 18-8 (304) Stainless Steel which is one of the highest forms of corrosion resistant metals, making it last longer than other Nuts on the market today.

【Locknuts That You Can Depend On】Our hex lock nuts are very strong and are great for both indoor and outdoor use. This stainless is superior to regular steel and provides excellent rust resistance. With a nylon insert, these lock nuts greatly reduce loosening under vibrations and torque.

【Great To Keep Around】Bolt Dropper hex nuts are great to have around for use in wood and wet environments. Bolt Dropper Hex Nuts are the highest quality available on the market and we stand by our claim 100%. They are strong, corrosion resistant and will support all of your projects.

For use with an externally threaded item that measure 3/8 inch and has 16 threads per inch.

Width Measured From Flat to Flat 9/16"

Height 29/64"

Durable Product

This Product Meets The Customer Requirement

Manufactured In China

- Name: 10-32 Nylock; - Thread Diameter: #10; - Thread Pitch: 32 teeth per Inch (Fine);

- Material: 304 Stainless Steel ;

- Package: 100 x 10-32 Nylon nuts; - Color: Silver;

Package: 50 PCS 10#24 Nylon Insert Hex Stainless Locknuts (Specification described in the pictures)

Thread Size:10#24; Thread Pitch: 24 TPI Coarse Thread UNC; Thread Coverage: Full

Hex Drive Size: 3/8"; Width From Flat to Flat:0.362 inch to 0.376 inch; Overall Height: 0.157 inch to 0.187 inch;

Package: 25 PCS 1/4"-20 Nylon Insert Hex Stainless Locknuts

Thread Size: 1/4"-20; Thread Pitch: 20 TPI UNC Coarse Thread; Thread Coverage: Full Thread

Hex Drive Size: 7/16"; Width From Flat to Flat: 7/16 inch; Overall Height: 21/64"

Diameter: 5/8"

Thickness: 49/64 inches

Material: Steel

Product Type : Nylon Insert Stainless Lock Nuts Locknuts; System of Measurement : Inch.

Material : Stainless Steel 18-8 (304), high hardness and provides excellent rust resistance, making it long last use.

Diameter-Thread Size : 5/16"-18; Pitch Size : 18 TPI UNC Coarse Thread.

☛LockNuts SIZE: Hole Diameter: 3/8 inch, Thread Pitch: 16 TPI. Included: 3/8"-16 inch Lock Nuts 26pcs .Packing Quantity: 26pcs.

☛ Material: 304 Stainless Steel, strong and corrosion resistant, prevent bolts from being exposed and coming out providing better security and firm hold. Performs better compared to lock washers as it is made out of non-corrosive material.

☛FEATURE: With a nylon insert, these lock nuts greatly reduce loosening under vibrations and torque. Can be widely used in automobile, construction machinery, shipbuilding and etc.

ENHANCED QUALITY BRASS Makes our Locknut Washer 1/2" Resistant to Corrosion and Safe for high temperatures

CONVENIENTLY DESIGNED TO CONNECT Pipes or Fittings of Different Diameter, Material, and End Type. Our Metal Hose Vacuum Gauge Locknut Washer 1/2" has 0,5 inch Female Threads.

RELIABLE FITTING of the Bushing Reducer is Provided by the Well-Machined Threads and the Relative Softness of the Brass that Enables Tighter Sealing. Easy to Install or Change. Doesn’t Leak!

Diameter: 9/16"

Thickness: 31/64 inches

Material: Steel

Diameter: 7/16"

Thickness: 15/32 inches

Material: Steel