7971915 — GEAR,HELICAL

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

7971915: GEAR,HELICAL.

The GEAR,HELICAL is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, body_style: WEBBED, SOLID, bore_style: W/ KEYWAY BOTH ENDS, teeth_type: SINGLE HELIX, tooth_form: STUB, helix_angle: 20.1555 DEGREES. This part is cataloged in the U.S.

Government catalog under NSN 3020-00-333-3530, 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

7971915

NSN: 3020-00-333-3530
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)

SPECIFICATIONS

material	STEEL OVERALL
body_style	WEBBED, SOLID
bore_style	W/ KEYWAY BOTH ENDS
teeth_type	SINGLE HELIX
tooth_form	STUB
helix_angle	20.1555 DEGREES
pitch_diameter	7.7647 INCHES NOMINAL IN
pressure_angle	25.0000 DEGREES
teeth_quantity	33
hardness_rating	60.0 ROCKWELL C MINIMUM AND 63.0 ROCKWELL C MAXIMUM OVERALL
tooth_direction	LEFT
style_designator	ONE PROTRUDING HUB, ONE FLUSH HUB
NSN	3020-00-333-3530

COMPONENT DIAGRAM

KEY FEATURES

•

KEYWAY NOMINAL WIDTH: 0.497 INCHES FIRST END IN

•

BORE NOMINAL DIAMETER: 2.4995 INCHES FIRST END IN

•

HELIX ANGLE: 20.1555 DEGREES

•

HUB NOMINAL DIAMETER: 3.410 INCHES FIRST END IN

•

TEETH QUANTITY: 33

•

BODY STYLE: WEBBED, SOLID

•

TOOTH DIRECTION: LEFT

•

BORE STYLE: W/ KEYWAY BOTH ENDS

TECHNICAL CHARACTERISTICS

KEYWAY NOMINAL WIDTH	0.497 INCHES FIRST END IN
BORE NOMINAL DIAMETER	2.4995 INCHES FIRST END IN
HELIX ANGLE	20.1555 DEGREES
HUB NOMINAL DIAMETER	3.410 INCHES FIRST END IN
TEETH QUANTITY	33
BODY STYLE	WEBBED, SOLID
TOOTH DIRECTION	LEFT
BORE STYLE	W/ KEYWAY BOTH ENDS
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END	0.191 INCHES FIRST END IN
TEETH TYPE	SINGLE HELIX

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.

3020-00-001-2090 3020-00-001-4468 3020-00-007-2779 3020-00-009-4033 3020-00-031-2269 3020-00-146-4181 3020-00-146-4222 3020-00-425-7115

SUBSTITUTES & CROSS-REFERENCES 1

747KB2108Reference document

Same NSN cross-reference

Reference document — Secondary reference

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 7971915?

7971915 is a GEAR,HELICAL.

What parts can replace 7971915?

There is 1 known substitute for 7971915: 747KB2108. Substitute compatibility should be verified for your specific system.

What is the NSN for 7971915?

7971915 is cataloged in the U.S. Government catalog under NSN 3020-00-333-3530. This indicates validated use in U.S. government and defense supply chains.

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7971915 — GEAR,HELICAL

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