Nylon Insert Locknut - Stainless M4-.7
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Secure threaded connections with this stainless nylon insert locknut. The nylon collar helps resist loosening from vibration—ideal 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 reduced—check thread condition and seating surfaces before installation.
Related Products & Accessories
- Fasteners & Mounting - Browse related fastening and mounting parts in the same collection.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.