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18900G-21 — SCREW,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

18900G-21: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include special_features: SCREWS, 10 PER PACKAGE; USED ON HEADSET MODEL 10-60C, end_item_identification: CH146 HELICOPTER. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-549-4856, 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
18900G-21
NSN: 5305-01-549-4856
FSC: 5305 — Screws
CAGE: 71483 — DAVID CLARK CO INC DIV DAVID CLARK COMPANY, INC. (USA)
SPECIFICATIONS
special_featuresSCREWS, 10 PER PACKAGE; USED ON HEADSET MODEL 10-60C
end_item_identificationCH146 HELICOPTER
NSN5305-01-549-4856
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 18900G-21 · 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
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESSCREWS, 10 PER PACKAGE; USED ON HEADSET MODEL 10-60C
END ITEM IDENTIFICATIONCH146 HELICOPTER
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 18900G-21?
18900G-21 is a SCREW,SHOULDER.
What is the NSN for 18900G-21?
18900G-21 is cataloged in the U.S. Government catalog under NSN 5305-01-549-4856. 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.