PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21576CGear,spur

Cummins Inc. · NSN 3020-00-104-6516 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-104-6516 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-104-6516. Primary manufacturer part number: 21576C.
Features
  • Gear,spur — FSC 3020
  • Pitch Diameter: 0.7500 INCHES NOMINAL IN
  • Tooth Form: SPECIAL
  • Pressure Angle: 33.5998 DEGREES
  • Teeth Quantity: 10
  • Bore Style: PLAIN BOTH ENDS
  • Material: STEEL COMP 8620 OVERALL
  • Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Steel Comp 8620 Overall construction
General Description

The Gear,spur, cataloged under National Stock Number 3020-00-104-6516, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Cummins Inc.. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 14 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3020-00-104-6516
Primary Part Number21576C
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerCummins Inc.
StatusCANCELLED
Pitch Diameter0.7500 INCHES NOMINAL IN
Tooth FormSPECIAL
Pressure Angle33.5998 DEGREES
Teeth Quantity10
Bore StylePLAIN BOTH ENDS
MaterialSTEEL COMP 8620 OVERALL
Material Document and Classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
Face Nominal Width0.266 INCHES IN
Body Recess Nominal Depth0.016 INCHES BOTH ENDS IN
Nominal Outside Diameter0.875 INCHES IN
Bore Nominal Diameter0.305 INCHES BOTH ENDS IN
Style DesignatorHUBLESS, RECESSED BODY
Body StyleWEBBED, SOLID
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
4720-00-405-4123SAE-J517-48-04 INTERCHANGEABLE
Hose,nonmetallic
Sae International Dba Sae International
2940-01-243-26783700-255 INTERCHANGEABLE
Air Cleaner,intake
Lombardini U.s.a., Inc
3040-01-420-1919W3T106445 INTERCHANGEABLE
Shaft Assembly,shouldered
Evoqua Water Technologies Llc
5977-01-545-014937000-004 INTERCHANGEABLE
Grounding Assembly,shaft
Evoqua Water Technologies Llc
Cross-Reference Index
Part NumberManufacturer
37002-55 Woodward, Inc. Div Fuel Systems and Controls (USA)
37013-316 Woodward, Inc. Div Fuel Systems and Controls (USA)
371233 Woodward, Inc. Div Fuel Systems and Controls (USA)
21576C PRIMARY Cummins Inc. (USA)
6L3983 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
82560-29 Woodward, Inc. (USA)
370004 Woodward, Inc. (USA)
91624393 Thales Sa (FRA)
8561-295-37013-28 Woodward, Inc. (USA)
37013-316N/P370004 Woodward, Inc. Div Fuel Systems and Controls (USA)
2N1895 Holt Bros (USA)
82560-29 Woodward, Inc. Div Fuel Systems and Controls (USA)
370004 Woodward, Inc. Div Fuel Systems and Controls (USA)
370004 Injection Et Regulation Marine (FRA)
Related Parts
4720-00-405-4123INTERCHANGEABLE
HOSE,NONMETALLIC
SAE-J517-48-04
2940-01-243-2678INTERCHANGEABLE
AIR CLEANER,INTAKE
3700-255
3040-01-420-1919INTERCHANGEABLE
SHAFT ASSEMBLY,SHOULDERED
W3T106445
5977-01-545-0149INTERCHANGEABLE
GROUNDING ASSEMBLY,SHAFT
37000-004

Frequently Asked Questions

What is NSN 3020-00-104-6516?

NSN 3020-00-104-6516 is a Gear,spur, manufactured by Cummins Inc., classified under FSC 3020 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3020-00-104-6516?

NSN 3020-00-104-6516 has 14 cross-referenced part numbers: 37002-55 (Woodward, Inc. Div Fuel Systems and Controls), 37013-316 (Woodward, Inc. Div Fuel Systems and Controls), 371233 (Woodward, Inc. Div Fuel Systems and Controls), 21576C (Cummins Inc.), 6L3983 (Caterpillar Inc Div Caterpillar Defense) and 9 more.

What NSN replaces 3020-00-104-6516?

There are 4 known substitutes for 3020-00-104-6516: 4720-00-405-4123, 2940-01-243-2678, 3040-01-420-1919 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21576C?

Key specifications for 21576C: Pitch Diameter: 0.7500 INCHES NOMINAL IN; Tooth Form: SPECIAL; Pressure Angle: 33.5998 DEGREES; Teeth Quantity: 10. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3020-00-104-6516 still in active supply?

NSN 3020-00-104-6516 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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