LOCKNUT (P/N mat690) - New Surplus
P/N: mat690
Category: Fasteners & Hardware
This product requires a custom quote. Please contact our sales team for pricing information or submit an RFQ (Request for Quote).
Available Inventory
| Condition | Stock |
|---|---|
| New Surplus | 62 Available |
Product Description
The mat690 is a metal locknut designed to prevent bolt loosening in vibration-prone aircraft assemblies. This prevailing torque fastener maintains joint security on airframe brackets and structural connections where vibration could otherwise cause fastener failure. Manufactured to AN, MS, or NAS specifications, the locknut provides reliable retention without requiring secondary locking methods.
Installation requires torquing to aircraft maintenance manual specifications. Replace the locknut if prevailing torque is lost or if visible damage occurs during inspection or removal.
Please note: Product descriptions are provided for informational purposes. Always refer to your aircraft's Illustrated Parts Catalog (IPC) to verify part compatibility and specifications.
Frequently Asked Questions
What is the LOCKNUT (P/N mat690)?
The mat690 is a metal locknut designed to prevent bolt loosening in vibration-prone aircraft assemblies. This prevailing torque fastener maintains joint security on airframe brackets and structural connections where vibration could otherwise cause fastener failure.
Does the mat690 meet AN/MS/NAS aviation specifications?
Aircraft hardware is manufactured to military and aviation specifications. The LOCKNUT conforms to its applicable AN (Air Force-Navy), MS (Military Standard), or NAS (National Aerospace Standard) specification. Contact us for specific specification details.
What material is the mat690 manufactured from?
Aviation hardware is available in various materials including cadmium-plated steel, stainless steel, aluminum alloy, and titanium depending on the application. Contact us for material certification and specifications for the mat690.
Can I order the mat690 in custom quantities?
Yes, we sell hardware in various quantities from single units to bulk lots. The LOCKNUT is available in: New Surplus. Submit an RFQ for volume pricing or call (904) 998-9101 for quantity availability.