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2644-0001-40 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

2644-0001-40: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5305-01-717-0533, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
2644-0001-40
NSN: 5305-01-717-0533
FSC: 5305 — Screws
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
Part Number2644-0001-40
NSN5305-01-717-0533
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 2644-0001-40 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
SUBSTITUTES & CROSS-REFERENCES 8
556-8544959-40Q5Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
0.375-16UNRC-3AX1.000LGNICUALQ5Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
556-8544959-40Reference document
Same NSN cross-reference
Reference document — Secondary reference
M1222SN6C316NCLNQ5Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
721-8541927-43Reference document
Same NSN cross-reference
Reference document — Secondary reference
721-8541927-43Q5Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2644-0001-40?
2644-0001-40 is a SCREW,CAP,SOCKET HEAD.
What parts can replace 2644-0001-40?
There are 8 known substitutes for 2644-0001-40: 556-8544959-40Q5, 0.375-16UNRC-3AX1.000LGNICUALQ5, 556-8544959-40 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2644-0001-40?
2644-0001-40 is cataloged in the U.S. Government catalog under NSN 5305-01-717-0533. This indicates validated use in U.S. government and defense supply chains.
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