Demand intelligence layer
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NATO stock number
NSN 5310-00-857-5559 belongs to FSC 5310, Nuts and Washers. PartsPerk uses this identifier to help buyers prepare RFQ, TraceFit, AOG, Supplier Backup, and Alternate Path workflows. Availability, fit, documentation, and authorization must be confirmed before purchase or use. PartsPerk does not claim this NSN is in stock from any vendor. This page supports RFQ readiness, TraceFit, AOG, supplier backup, and alternate-path review — not guaranteed availability, certificates, interchange, or airworthiness. This page organizes sourcing context only. It does not confirm stock, price, availability, supplier authorization, certification, airworthiness, interchangeability, fit, export clearance, or document validity. Catalog state: source visible. Some workflows may require additional source enrichment or supplier confirmation.
Demand intelligence layer
Internal usefulness signal 100 out of one hundred — controls search indexing policy, not stock or certification claims.
What is NSN 5310-00-857-5559? NSN 5310-00-857-5559 is commonly identified with Military Standard MS21045L5 Steel Dry Filmed Nut, Self-Locking, Hexagon - 10/Pack in Federal Supply Class 5310 (Nuts and Washers). PartsPerk uses this NATO stock number to route RFQ preparation, TraceFit checks, supplier backup, alternate-path review, and AOG workflows — without asserting stock, price, interchangeability, airworthiness, or counterparty authorization.
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Page summary
PartsPerk does not claim live inventory unless availability has been confirmed. Identifier metadata comes from public PUB LOG / DLA / SAM sources and is provided for sourcing context only.
Buyer knowledge graph
Identifier doorways for buyers researching the same Federal Supply Class, manufacturer entity, or part-number family. Each link routes to a paperwork-first capture page — no inventory or authorization claims.
Why buyers stay
Replied to by a named sales executive
Sal Faruqui owns inbound RFQs end-to-end — no generic queue, one contact through fulfillment.
Priority review for AOG lines
Routine RFQs are reviewed promptly; AOG-marked lines bypass the routine queue and are prioritized for callback.
Documents lined up before purchase
FAA Form 8130-3, ATA-106, Certificate of Conformance, and mill-cert requirements are captured before quoting.
Supplier identity disclosed before award
You see who would ship the part before you commit. No anonymous resale, no last-minute supplier swap.
PUB LOG referenceEvidence-safe related rows — not stock, price, or GTIN claims. Bounded sample; always confirm particulars with procurement engineering and records teams.
Military Standard MS21045L5 Steel Dry Filmed Nut, Self-Locking, Hexagon - 10/Pack — Approvals and Conformities NSN 5310-00-857-5559 Product Attributes Country of Origin United States Shipping Weight 0.01 pounds ECCN EAR99 Color Family Gold Manufacturer P/N MS21045L5 Schedule B Code 7318.16.0000 Pack Quantity 10 Series MS21045 Color
Recommended next step
Add quantity and contact details — we'll confirm price, lead time, and a trace plan.
Recommended next step
Add quantity and contact details — we'll confirm price, lead time, and a trace plan.