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Technical Data Sheet
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2121 2040-493 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

2121 2040-493: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5306-01-165-6891, 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
2121 2040-493
NSN: 5306-01-165-6891
FSC: 5306 — Bolts
CAGE: 076M6 — AMZ ALABAMA INC. (USA)
SPECIFICATIONS
Part Number2121 2040-493
NSN5306-01-165-6891
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 2121 2040-493 · 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 3
90493-991Reference document
Same NSN cross-reference
Reference document — Secondary reference
HE010063Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
010063Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2121 2040-493?
2121 2040-493 is a BOLT,MACHINE.
What parts can replace 2121 2040-493?
There are 3 known substitutes for 2121 2040-493: 90493-991, HE010063, 010063. Substitute compatibility should be verified for your specific system.
What is the NSN for 2121 2040-493?
2121 2040-493 is cataloged in the U.S. Government catalog under NSN 5306-01-165-6891. This indicates validated use in U.S. government and defense supply chains.
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