Nylon Insert Locknut – Stainless 3/8-16

A stainless steel nylon insert locknut designed for 3/8-16 threads, helping resist loosening under vibration.

Key Features

• Stainless steel construction (18-8)
• Nylon insert lock design to help resist thread loosening
• Coarse-thread size: 3/8-16

Intended Use

• Marine and outdoor hardware assemblies where vibration may loosen standard nuts
• General-purpose fastening applications requiring a nylon-insert locknut

Product Details

• Product: Nylon Insert Locknut – Stainless 3/8-16
• Brand/Source label: LNS (Seachoice)
• Locknut style: Nylon insert (nylon-insert locknut)
• Thread size: 3/8-16
• Material: 18-8 Stainless Steel
• Pack/SKU detail: SKU 50-00627
• Variant details (from product data): weight 454 GRAMS

Parts Desk Insights

Best Use Case: Use on coarse-thread studs or bolts where you want a mechanical anti-loosening effect from the nylon insert, especially in vibration-prone setups.

Common Issues: Confirm thread size (3/8-16) before install; nylon-insert locknuts can require slightly higher torque to overcome the nylons added friction. If a nut feels unusually hard to thread, stop and verify the bolt/stud thread pitch and alignment.

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