PartsTable
Technical Data Sheet

21837/361 ZZ — THUMBSCREW

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

21837/361 ZZ: THUMBSCREW.

The THUMBSCREW is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5305-01-236-7491, 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
21837/361 ZZ
NSN: 5305-01-236-7491
FSC: 5305 — Screws
CAGE: 51190 — VIAVI SOLUTIONSLLC (USA)
SPECIFICATIONS
Part Number21837/361 ZZ
NSN5305-01-236-7491
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 21837/361 ZZ · 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
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-000-0094 5305-00-000-1397 5305-00-000-2625 5305-00-000-3669 5305-00-000-3830 5305-00-000-3831
SUBSTITUTES & CROSS-REFERENCES 1
21837-361Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 21837/361 ZZ?
21837/361 ZZ is a THUMBSCREW.
What parts can replace 21837/361 ZZ?
There is 1 known substitute for 21837/361 ZZ: 21837-361. Substitute compatibility should be verified for your specific system.
What is the NSN for 21837/361 ZZ?
21837/361 ZZ is cataloged in the U.S. Government catalog under NSN 5305-01-236-7491. 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.