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31171211 — GEAR,HELICAL

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

31171211: GEAR,HELICAL.

The GEAR,HELICAL is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_style: W/ KEYWAY BOTH ENDS, teeth_type: SINGLE HELIX, teeth_quantity: 28, face_nominal_width: 1.375 INCHES IN, keyway_nominal_width: 0.250 INCHES BOTH ENDS IN. This part is cataloged in the U.S.

Government catalog under NSN 3020-01-156-8364, 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
31171211
NSN: 3020-01-156-8364
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
CAGE: 13446 — PERKINS ENGINES INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_styleW/ KEYWAY BOTH ENDS
teeth_typeSINGLE HELIX
teeth_quantity28
face_nominal_width1.375 INCHES IN
keyway_nominal_width0.250 INCHES BOTH ENDS IN
bore_nominal_diameter1.875 INCHES BOTH ENDS IN
nominal_overall_length3.250 INCHES IN
NSN3020-01-156-8364
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available GEAR,HELICAL TITLE COMPONENT PN 31171211 MFR GEAR,HELICAL
KEY FEATURES
•
KEYWAY NOMINAL WIDTH: 0.250 INCHES BOTH ENDS IN
•
BORE NOMINAL DIAMETER: 1.875 INCHES BOTH ENDS IN
•
TEETH QUANTITY: 28
•
BORE STYLE: W/ KEYWAY BOTH ENDS
•
TEETH TYPE: SINGLE HELIX
•
NOMINAL OVERALL LENGTH: 3.250 INCHES IN
•
MATERIAL: STEEL OVERALL
•
FACE NOMINAL WIDTH: 1.375 INCHES IN
TECHNICAL CHARACTERISTICS
KEYWAY NOMINAL WIDTH0.250 INCHES BOTH ENDS IN
BORE NOMINAL DIAMETER1.875 INCHES BOTH ENDS IN
TEETH QUANTITY28
BORE STYLEW/ KEYWAY BOTH ENDS
TEETH TYPESINGLE HELIX
NOMINAL OVERALL LENGTH3.250 INCHES IN
MATERIALSTEEL OVERALL
FACE NOMINAL WIDTH1.375 INCHES IN
OTHER ITEMS IN FSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3020-00-000-0091 3020-00-001-0027 3020-00-001-0028 3020-00-001-0063 3020-00-001-0064 3020-00-001-0066 3020-00-001-0071 3020-00-001-0072
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 31171211?
31171211 is a GEAR,HELICAL.
What is the NSN for 31171211?
31171211 is cataloged in the U.S. Government catalog under NSN 3020-01-156-8364. 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.