Aerospace Screws
Around 15,000 machine, structural, and socket head cap screws — NAS1101, NAS1102, NAS1351, NAS517, AN525, MS27039 and more — in alloy steel, A286, and titanium, ready to order with full AS9120 traceability.
Aerospace Screw Types
Machine screws, structural screws, and socket head cap screws to NAS, AN, and MS standards — in every head style and drive recess your drawings call out.
Machine Screws
Full-thread machine screws in the two staple head styles: NAS1101 100-degree flush head and NAS1102 pan head. Offered across multiple materials and drive recesses for panels, brackets, doublers, and equipment mounting.
Flush & Self-Locking Screws
NAS517 100-degree flush screws for aerodynamic surfaces where a countersunk thread fastener is called out, plus NAS1189 self-locking flush screws with a thread-locking element for vibration-prone installations.
Structural Screws
AN525 washer-head and MS27039 pan-head structural screws combine a definite unthreaded grip with alloy-steel strength, letting them carry shear in structural joints where a drawing permits a screw in place of a bolt.
Socket Head Cap Screws
NAS1351 and NAS1352 hex-socket cap screws deliver high preload from a compact cylindrical head — the choice for confined installations, fittings, and equipment where wrench clearance is limited.
Head Styles & Drive Recesses
Pan, 100-degree flush, washer, and socket cap heads paired with Phillips, Torq-Set, Tri-Wing, Hi-Torque, and internal hex drives. The recess is part of the callout — order exactly what the drawing and your tooling specify.
Screw Materials & Options
Alloy Steel (Cadmium-Plated)
High-strength screws for structural applications, typically cadmium plated for corrosion protection. The standard material for AN525 and MS27039 structural screws.
CRES 300-Series & A286
Corrosion-resistant screws for general airframe use, with A286 specified where strength must be retained at elevated temperature — engine bays, nacelles, and heated zones.
Titanium
Weight-critical installations on current-generation airframes, with excellent corrosion resistance and galvanic compatibility alongside carbon-fiber structure.
Locking & Finish Options
Self-locking thread elements, drilled heads for safety wire, and finishes from cadmium plate to passivation and dry-film lube — all selected by the dash and code letters in the part number.
How to Order Aerospace Screws
Search by Part Number
Enter the full NAS, AN, or MS screw part number from your drawing, including the dash size and the code letters for material, drive, and locking features.
Get a Fast Online Quote
Add the quantities you need to your quote and compare options sourced from our approved suppliers on price, lead time, and minimum order quantity.
Order with Confidence
Check out securely online. Every shipment includes certificates of conformance backed by our AS9120 Rev B quality management system.
The Right Screw for Every Callout
Screws are the most frequently handled fasteners on an aircraft: they secure access panels, fairings, equipment racks, brackets, and interiors, and in their structural forms they carry real airframe loads. The Instaparts catalog holds roughly 15,000 screw line items among its 266,000+ parts, covering NAS1101 and NAS1102 machine screws, NAS517 flush screws, NAS1189 self-locking screws, NAS1351 and NAS1352 socket head cap screws, and AN525 and MS27039 structural screws, alongside OEM part numbers from Boeing, Airbus, and Bombardier programs.
The distinction that matters most is structural versus non-structural. A structural screw such as AN525 or MS27039 is made from alloy steel with a definite unthreaded grip, so the smooth shank — not the threads — sits in the shear plane of the joint; within its approved applications it does a bolt-like job with screwdriver installation. Ordinary machine screws are threaded to the head and belong on lighter attachments. Head style and drive recess complete the callout: pan and washer heads for internal work, 100-degree flush heads for aerodynamic surfaces, hex-socket cap heads where preload and clearance demand it, driven through Phillips, Torq-Set, Tri-Wing, Hi-Torque, or internal hex recesses.
Instaparts, a division of RFQ2Go, Inc. in Toronto, Canada, distributes screws under an AS9120 Rev B certified quality management system. We source only from approved suppliers, apply counterfeit-prevention controls aligned with AS6081, maintain lot traceability from receipt through delivery, and include certificates of conformance with every shipment — the paperwork your quality department expects, on hardware as routine as a panel screw.
Screws are one piece of the fastener picture. For structural joints see our aerospace bolts page, for sheet-metal assembly see aerospace rivets, and for joint fit-up see aerospace shims. For mixed or high-volume requirements, send your bill of materials through our quote page for a consolidated response.
Aerospace Screw FAQs
What is the difference between a structural screw and a machine screw?
Structural screws such as AN525 and MS27039 have a definite unthreaded grip length and alloy-steel strength, so they can carry shear loads in structural joints much like a bolt. Machine screws are typically threaded to the head and are used for lighter attachments where the drawing does not require a structural fastener.
What drive types do aerospace screws use?
Common recesses include the Phillips cross recess, Torq-Set offset cruciform, Tri-Wing, Hi-Torque slot, and internal hex sockets on cap screws such as NAS1351. The drive is part of the part number callout, so always order the exact recess your drawing and tooling require.
What materials are NAS1351 socket head cap screws available in?
NAS1351 socket head cap screws are cataloged in alloy steel and corrosion-resistant materials including 300-series CRES and A286, with options such as drilled heads for safety wire and self-locking elements. Search the full part number to see the options for your dash size.
Do you carry self-locking aerospace screws?
Yes. Self-locking variants — including NAS1189 flush-head self-locking screws — use a locking element in the threads to resist rotation under vibration. They are quoted by exact part number alongside their non-locking equivalents.
How do I get a quote for aerospace screws?
Search the catalog by part number for a fast online quote, or submit your requirement through our quote page. Every order is processed under our AS9120 Rev B quality management system and ships with certificates of conformance.
Need Aerospace Screws?
Browse the catalog by NAS, AN, or MS part number and get a fast online quote with full AS9120 traceability.
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