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311881 — GEAR,HELICAL

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

311881: GEAR,HELICAL.

The GEAR,HELICAL is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, teeth_quantity: 15, face_nominal_width: 0.409 INCHES IN, nominal_overall_length: 0.688 INCHES IN, nominal_outside_diameter: 0.8125 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-054-6670, 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
311881
NSN: 5305-00-054-6670
NIINs: 000546670, 008139199
FSC: 5305 — Screws
CAGE: 99193 — HONEYWELL INTERNATIONAL INC. DBA HONEYWELL INTERNATIONAL DIV AEROSPACE - PHOENIX (USA)
SPECIFICATIONS
materialSTEEL OVERALL
teeth_quantity15
face_nominal_width0.409 INCHES IN
nominal_overall_length0.688 INCHES IN
nominal_outside_diameter0.8125 INCHES IN
NSN5305-00-054-6670
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 311881 · 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 9
8-32X1/2Reference document
Same NSN cross-reference
Reference document — Secondary reference
23-00875-007Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
AN515C8R8Reference document
Same NSN cross-reference
Reference document — Secondary reference
AN515C-8-8Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
10252Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
0210-0045Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 311881?
311881 is a GEAR,HELICAL.
What parts can replace 311881?
There are 9 known substitutes for 311881: 8-32X1/2, 23-00875-007, AN515C8R8 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 311881?
311881 is cataloged in the U.S. Government catalog under NSN 5305-00-054-6670. 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.