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Technical Data Sheet
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556-3969 — 556-3969

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

556-3969: 556-3969.

The 556-3969 is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5325-00-333-5636, 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
556-3969
NSN: 5325-00-333-5636
FSC: 5325 — Fastening Devices
CAGE: 11530 — LOCKHEED MARTIN CORPORATION DIV LOCKHEED MARTIN INFORMATION SYSTEMS & GLOBAL SOLUTIONS (USA)
SPECIFICATIONS
Part Number556-3969
NSN5325-00-333-5636
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 556-3969 · 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
2554932Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
750ACReference document
Same NSN cross-reference
Reference document — Secondary reference
12-343-00-000Reference document
Same NSN cross-reference
Reference document — Secondary reference
64010421Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
556-10197Reference document
Same NSN cross-reference
Reference document — Secondary reference
560827Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 556-3969?
556-3969 is a 556-3969.
What parts can replace 556-3969?
There are 8 known substitutes for 556-3969: 2554932, 750AC, 12-343-00-000 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 556-3969?
556-3969 is cataloged in the U.S. Government catalog under NSN 5325-00-333-5636. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.