91857-991 — GEAR,SPUR

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

91857-991: GEAR,SPUR.

The GEAR,SPUR is a the manufacturer industrial component. Key specifications include material: STEEL COMP 3115, body_style: CHAMFERED ENDS, bore_style: INSIDE RADII STRAIGHT-THRU BORE, body_length: 10.6950 INCHES MINIMUM AND 10.7000 INCHES MAXIMUM IN, bore_radius: 0.063 INCHES NOMINAL IN, bore_diameter: 3.7500 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3020-01-173-2201, 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

91857-991

NSN: 3020-01-173-2201
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
CAGE: 076M6 — AMZ ALABAMA INC. (USA)

SPECIFICATIONS

material	STEEL COMP 3115
body_style	CHAMFERED ENDS
bore_style	INSIDE RADII STRAIGHT-THRU BORE
body_length	10.6950 INCHES MINIMUM AND 10.7000 INCHES MAXIMUM IN
bore_radius	0.063 INCHES NOMINAL IN
bore_diameter	3.7500 INCHES NOMINAL IN
outside_diameter	5.12350 INCHES MINIMUM AND 5.12400 INCHES MAXIMUM IN
fsc_application_data	ENGINE,DIESEL
casehardening_indicator	NOT CASEHARDENED
end_chamfer_angle_in_deg	15.0
material_document_and_classification	SAE 3115 ASSN STD SINGLE MATERIAL RESPONSE
NSN	3020-01-173-2201

COMPONENT DIAGRAM

SUBSTITUTES & CROSS-REFERENCES 2

60.08.103Reference document

Same NSN cross-reference

Reference document — Secondary reference

3536928-651Reference 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 91857-991?

91857-991 is a GEAR,SPUR.

What parts can replace 91857-991?

There are 2 known substitutes for 91857-991: 60.08.103, 3536928-651. Substitute compatibility should be verified for your specific system.

What is the NSN for 91857-991?

91857-991 is cataloged in the U.S. Government catalog under NSN 3020-01-173-2201. This indicates validated use in U.S. government and defense supply chains.

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91857-991 — GEAR,SPUR

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