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7972991 — GEAR,BEVEL

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

7972991: GEAR,BEVEL.

The GEAR,BEVEL is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4140 AND STEEL COMP 8640 OVERALL, body_style: PLAIN, SOLID, teeth_type: STRAIGHT, pitch_angle: 29.9450 DEGREES, pitch_diameter: 1.3330 INCHES NOMINAL IN, pressure_angle: 20.0000 DEGREES. This part is cataloged in the U.S.

Government catalog under NSN 3020-00-476-5124, 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
7972991
NSN: 3020-00-476-5124
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL COMP 4140 AND STEEL COMP 8640 OVERALL
body_stylePLAIN, SOLID
teeth_typeSTRAIGHT
pitch_angle29.9450 DEGREES
pitch_diameter1.3330 INCHES NOMINAL IN
pressure_angle20.0000 DEGREES
teeth_quantity16
hardness_rating29.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM OVERALL
style_designatorPERIPHERAL FACE, HUBLESS
face_nominal_width0.375 INCHES IN
nominal_overall_length0.500 INCHES IN
nominal_outside_diameter1.5230 INCHES IN
NSN3020-00-476-5124
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available GEAR,BEVEL TITLE COMPONENT PN 7972991 MFR GEAR,BEVEL
KEY FEATURES
•
TEETH QUANTITY: 16
•
BODY STYLE: PLAIN, SOLID
•
PITCH ANGLE: 29.9450 DEGREES
•
TEETH TYPE: STRAIGHT
•
HARDNESS RATING: 29.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM OVERALL
•
NOMINAL OVERALL LENGTH: 0.500 INCHES IN
•
STYLE DESIGNATOR: PERIPHERAL FACE, HUBLESS
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-624,COMP 4140,8640 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
TEETH QUANTITY16
BODY STYLEPLAIN, SOLID
PITCH ANGLE29.9450 DEGREES
TEETH TYPESTRAIGHT
HARDNESS RATING29.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM OVERALL
NOMINAL OVERALL LENGTH0.500 INCHES IN
STYLE DESIGNATORPERIPHERAL FACE, HUBLESS
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-624,COMP 4140,8640 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
PITCH DIAMETER1.3330 INCHES NOMINAL IN
NOMINAL OUTSIDE DIAMETER1.5230 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 1
3020004765124Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 7972991?
7972991 is a GEAR,BEVEL.
What parts can replace 7972991?
There is 1 known substitute for 7972991: 3020004765124. Substitute compatibility should be verified for your specific system.
What is the NSN for 7972991?
7972991 is cataloged in the U.S. Government catalog under NSN 3020-00-476-5124. 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.