Nylon Insert Locknut – Stainless M4-.7

Secure threaded connections with this stainless nylon insert locknut. The nylon collar helps resist loosening from vibrationideal for marine and equipment mounting where consistent tension matters.

Key Features

• Stainless steel construction (18-8 stainless)
• Nylon insert lock design helps increase thread friction to resist loosening from vibration
• Metric thread: M4 x 0.7 (as shown in the title/SKU)

Intended Use

• Marine fastener applications where nylon insert locknuts are used
• Equipment and bracket mounting needing vibration-resistant locking
• General mechanical assemblies using M4 x 0.7 threaded hardware

Product Details

• Product: Nylon Insert Locknut – Stainless M4-.7
• Finish/Material: 18-8 Stainless Steel
• Thread: M4-.7 (M4 x 0.7)
• SKU: 50-01223
• Variant weight: 113 GRAMS

Parts Desk Insights

Best Use Case: Use for threaded joints where you want improved resistance to loosening from vibration, such as mounting hardware and bracket fasteners in marine and equipment applications.

Common Issues: Confirm the mating bolt/screw uses the same metric size and pitch (M4 x 0.7). If the connection is over-torqued or the threads are damaged, the locking performance can be reducedcheck thread condition and seating surfaces before installation.

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