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2D2-81-1 — GEAR ASSEMBLY,SPEED DECREASER

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

2D2-81-1: GEAR ASSEMBLY,SPEED DECREASER.

The GEAR ASSEMBLY,SPEED DECREASER is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, overall_width: 0.8750 INCHES NOMINAL IN, outside_diameter: 4.2500 INCHES NOMINAL IN, style_designator: NORMAL ANGLE, backface_corner_radius: 0.0312 INCHES NOMINAL IN, standard_tolerance_designation: AFBMA CLASS 2. This part is cataloged in the U.S.

Government catalog under NSN 3010-01-177-1034, 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
2D2-81-1
NSN: 3010-01-177-1034
FSC: 3010 — Torque Converters and Speed Changers
CAGE: 34712 — LAKE SHORE SYSTEMS, INC. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
overall_width0.8750 INCHES NOMINAL IN
outside_diameter4.2500 INCHES NOMINAL IN
style_designatorNORMAL ANGLE
backface_corner_radius0.0312 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN3010-01-177-1034
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available GEAR ASSEMBLY,SPEED DECREASER TITLE COMPONENT PN 2D2-81-1 MFR GEAR ASSEMBLY,SPEED DE
SUBSTITUTES & CROSS-REFERENCES 1
2D2-81Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2D2-81-1?
2D2-81-1 is a GEAR ASSEMBLY,SPEED DECREASER.
What parts can replace 2D2-81-1?
There is 1 known substitute for 2D2-81-1: 2D2-81. Substitute compatibility should be verified for your specific system.
What is the NSN for 2D2-81-1?
2D2-81-1 is cataloged in the U.S. Government catalog under NSN 3010-01-177-1034. 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.