639AS1559ALT — SCREW,CAP,SOCKET HEAD

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

639AS1559ALT: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include thread_class: 3A A, thread_length: 0.437 INCHES NOMINAL IN, fastener_length: 0.496 INCHES MINIMUM AND 0.498 INCHES MAXIMUM IN, width_across_flats: 0.109 INCHES MINIMUM AND 0.111 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-054-3402, 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

639AS1559ALT

NSN: 5305-01-054-3402
FSC: 5305 — Screws
CAGE: 30003 — NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER (USA)

SPECIFICATIONS

thread_class	3A A
thread_length	0.437 INCHES NOMINAL IN
fastener_length	0.496 INCHES MINIMUM AND 0.498 INCHES MAXIMUM IN
width_across_flats	0.109 INCHES MINIMUM AND 0.111 INCHES MAXIMUM IN
NSN	5305-01-054-3402

COMPONENT DIAGRAM

KEY FEATURES

•

WIDTH ACROSS FLATS: 0.109 INCHES MINIMUM AND 0.111 INCHES MAXIMUM IN

•

FASTENER LENGTH: 0.496 INCHES MINIMUM AND 0.498 INCHES MAXIMUM IN

•

THREAD LENGTH: 0.437 INCHES NOMINAL IN

•

THREAD CLASS: 3A A

TECHNICAL CHARACTERISTICS

WIDTH ACROSS FLATS	0.109 INCHES MINIMUM AND 0.111 INCHES MAXIMUM IN
FASTENER LENGTH	0.496 INCHES MINIMUM AND 0.498 INCHES MAXIMUM IN
THREAD LENGTH	0.437 INCHES NOMINAL IN
THREAD CLASS	3A A

SUBSTITUTES & CROSS-REFERENCES 1

639AS1559Reference document

Same NSN cross-reference

Reference document — Advisory reference — outside the item-of-supply concept

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 639AS1559ALT?

639AS1559ALT is a SCREW,CAP,SOCKET HEAD.

What parts can replace 639AS1559ALT?

There is 1 known substitute for 639AS1559ALT: 639AS1559. Substitute compatibility should be verified for your specific system.

What is the NSN for 639AS1559ALT?

639AS1559ALT is cataloged in the U.S. Government catalog under NSN 5305-01-054-3402. This indicates validated use in U.S. government and defense supply chains.

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639AS1559ALT — SCREW,CAP,SOCKET HEAD

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