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Technical Data Sheet
PartsTable / COMPONENT / 311881
311881 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

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 Federal Logistics Information System (FLIS) 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
FSC: 5305
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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 27
112-1051-022Interchangeable
interchangeable cross-reference
interchangeable
MS51958-79Interchangeable
interchangeable cross-reference
interchangeable
401-6357200-63Interchangeable
interchangeable cross-reference
interchangeable
17086Interchangeable
interchangeable cross-reference
interchangeable
21691Interchangeable
interchangeable cross-reference
interchangeable
75-18Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 311881?
311881 is a GEAR,HELICAL.
What parts can replace 311881?
There are 27 known substitutes for 311881: 112-1051-022, MS51958-79, 401-6357200-63 and 24 more. Substitute compatibility should be verified for your specific system.
Is 311881 still available?
311881 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026