The hexagonal self-locking nut contains a nylon insert. Made from carbon steel with cadmium type II finish per QQ-P-416. MS21044 series nut.
- 1/4-28
- Regular height
- Carbon steel
- Passivated per QQ-P-416
- Nylon insert
AI disclosure: this description was generated with AI assistance from this product's own listing data.
Product Codes | |
|---|---|
| Mfr Part No: | MS21044N4 |
| MIL SPEC: | MS21044N4 |
| ECCN: | EAR99 |
| MIL SPEC: | MS21044N4 |
| SCHEDULE B CODE: | 8803.30.0050 |
Thread size: 1/4-28Dimensions: .430-.439 width .240-.360 heightTensile strength: 4580 lbs/min
- Stock: Out of Stock
- Manufacturer Part #: MS21044N4
Aircraft Fitment Finder
Returns & refund summary
- 30-day return window — with prior return authorization, unopened in original packaging.
- Restocking fee: 20% on unopened items, 30% on open-box items.
- Refund processing fee: 5.51% applies only to customer-remorse returns and customer-initiated cancellations. If a problem is our fault (our cancellation, unavailability, wrong item, confirmed defect, or shipping damage) your refund is 100% with no fees.
- Return shipping: paid by buyer on customer-remorse returns; we pay return shipping when the problem is our fault.
- Non-returnable categories: installed/used parts, special-order or rebuilt items, programmed items (incl. ELTs), batteries, AOG-priority orders, international orders.
Full terms: Return Policy.
Authenticity & authorization
We source products from manufacturers, authorized distributors, and established aviation suppliers as applicable. We are an independent reseller; we do not claim direct dealer or authorized-representative status for any brand. Documentation, source, and warranty eligibility vary by product and are confirmed on request.
See our full Manufacturer Authorizations page for the current per-brand status.
Need traceability paperwork?
If your installation requires FAA Form 8130-3, manufacturer Certificate of Conformance, or other traceability documentation, please call 1-877-722-8727 or email [email protected] before placing the order so we can confirm what is available for this part.
Shipping
Standard ground, expedited, and AOG shipping options are available at checkout. Full shipping-cost tiers and timelines are published on our Delivery Information page.
