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2D1-03977 — GEARSHAFT,SPUR

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

2D1-03977: GEARSHAFT,SPUR.

The GEARSHAFT,SPUR is a the manufacturer industrial component. Key specifications include face_width: 4.250 INCHES NOMINAL IN, shaft_type: SHOULDERED, gear_material: STEEL COMP 4820, overall_length: 15.000 INCHES NOMINAL IN, pressure_angle: 25.0000 DEGREES, shaft_end_size: 3.348 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 3040-01-449-0153, 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
2D1-03977
NSN: 3040-01-449-0153
FSC: 3040 — Miscellaneous Power Transmission Equipment
CAGE: 34712 — LAKE SHORE SYSTEMS, INC. (USA)
SPECIFICATIONS
face_width4.250 INCHES NOMINAL IN
shaft_typeSHOULDERED
gear_materialSTEEL COMP 4820
overall_length15.000 INCHES NOMINAL IN
pressure_angle25.0000 DEGREES
shaft_end_size3.348 INCHES IN
shaft_end_typePLAIN
shaft_materialSTEEL COMP 4820
teeth_quantity23
diametral_pitch4
hardness_rating55.0 ROCKWELL C MINIMUM AND 60.0 ROCKWELL C MAXIMUM TEETH
special_featuresSPHERICAL ROLLER BEARING ON EACH END OF SHAFT
NSN3040-01-449-0153
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available GEARSHAFT,SPUR TITLE COMPONENT PN 2D1-03977 MFR GEARSHAFT,SPUR
KEY FEATURES
•
SHAFT TYPE: SHOULDERED
•
SHAFT MATERIAL: STEEL COMP 4820
•
SHAFT LARGEST DIAMETER: 4.000 INCHES NOMINAL IN
•
SHAFT END SIZE: 3.348 INCHES IN
•
TEETH QUANTITY: 23
•
DIAMETRAL PITCH: 4
•
GEAR OUTSIDE DIAMETER: 6.240 INCHES MINIMUM AND 6.250 INCHES MAXIMUM IN
•
LONGER SHAFT SEGMENT LENGTH: 9.125 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SHAFT TYPESHOULDERED
SHAFT MATERIALSTEEL COMP 4820
SHAFT LARGEST DIAMETER4.000 INCHES NOMINAL IN
SHAFT END SIZE3.348 INCHES IN
TEETH QUANTITY23
DIAMETRAL PITCH4
GEAR OUTSIDE DIAMETER6.240 INCHES MINIMUM AND 6.250 INCHES MAXIMUM IN
LONGER SHAFT SEGMENT LENGTH9.125 INCHES NOMINAL IN
HARDNESS RATING55.0 ROCKWELL C MINIMUM AND 60.0 ROCKWELL C MAXIMUM TEETH
OVERALL LENGTH15.000 INCHES NOMINAL IN
OTHER ITEMS IN FSC 3040 — Miscellaneous Power Transmission Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3040-00-001-0046 3040-00-001-0047 3040-00-001-0048 3040-00-001-0068 3040-00-001-0077 3040-00-001-0078 3040-00-001-0089 3040-00-001-1224
SUBSTITUTES & CROSS-REFERENCES 1
2D3-00293 IT NO 3Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 2D1-03977?
2D1-03977 is a GEARSHAFT,SPUR.
What parts can replace 2D1-03977?
There is 1 known substitute for 2D1-03977: 2D3-00293 IT NO 3. Substitute compatibility should be verified for your specific system.
What is the NSN for 2D1-03977?
2D1-03977 is cataloged in the U.S. Government catalog under NSN 3040-01-449-0153. 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.