PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

831520Gear,spur

Grindley Manufacturing Inc. · NSN 3020-00-528-8449 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-528-8449 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-528-8449. Primary manufacturer part number: 831520.
Features
  • Gear,spur — FSC 3020
  • Tooth Form: STANDARD
  • Pressure Angle: 20.0000 DEGREES
  • Nominal Outside Diameter: 0.7987 INCHES IN
  • Bore Style: PLAIN BOTH ENDS
  • Teeth Quantity: 22
  • Pitch Diameter: 0.7333 INCHES NOMINAL IN
  • Bore Nominal Diameter: 0.3756 INCHES BOTH ENDS IN
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Steel Overall construction
General Description

The Gear,spur, cataloged under National Stock Number 3020-00-528-8449, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Grindley Manufacturing Inc.. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3020-00-528-8449
Primary Part Number831520
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerGrindley Manufacturing Inc.
StatusCANCELLED
Tooth FormSTANDARD
Pressure Angle20.0000 DEGREES
Nominal Outside Diameter0.7987 INCHES IN
Bore StylePLAIN BOTH ENDS
Teeth Quantity22
Pitch Diameter0.7333 INCHES NOMINAL IN
Bore Nominal Diameter0.3756 INCHES BOTH ENDS IN
Body StylePLAIN, SOLID
Style DesignatorHUBLESS
MaterialSTEEL OVERALL
Face Nominal Width0.128 INCHES IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
4730-00-011-8831118831 INTERCHANGEABLE
Plug,pipe
Rolls-Royce Solutions America Inc
6240-00-141-5282H83135211 INTERCHANGEABLE
Lamp,incandescent
Hella Inc
5133-00-189-9281 INTERCHANGEABLE
Drill,twist
5120-00-261-2815 INTERCHANGEABLE
Socket,socket Wrench
1660-00-716-1692206838 INTERCHANGEABLE
Nozzle,cooling Turbine
Honeywell International Inc. Div Aerospace - Torrance
5950-01-088-961513336 INTERCHANGEABLE
Coil,electrical
Oeco, Llc Dba Pacific Scientific Oeco Div Fire Safety and Power Systems
2530-01-261-5505206838 INTERCHANGEABLE
Tie Rod,steering
Koehring Cranes, Inc Dba Terex Cranes Div Waverly Operations
4730-01-273-573513336 INTERCHANGEABLE
Coupling,pipe
Westerbeke Corporation
5120-01-346-092413336 INTERCHANGEABLE
Key,socket Head Screw
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
6545-01-576-6816UA 326A INTERCHANGEABLE
Medical Resupply Set,tactical Co
Department of the Army U S Army Medical Material Agency Mcmr-Mmo-Sa
Cross-Reference Index
Part NumberManufacturer
831520 PRIMARY Grindley Manufacturing Inc. (USA)
13336 Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc. (USA)
206838REVD Kidde-Fenwal, Llc (USA)
K206838 Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc (USA)
K206838 Davey Compressor Co Div of Keco Industries Inc (USA)
K206838 Nell-Joy Industries, Inc. (USA)
13336 Howden Fluid Systems (USA)
206838 Kidde-Fenwal, Llc (USA)
K206838 Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc. (USA)
Related Parts
4730-00-011-8831INTERCHANGEABLE
PLUG,PIPE
118831
6240-00-141-5282INTERCHANGEABLE
LAMP,INCANDESCENT
H83135211
5133-00-189-9281INTERCHANGEABLE
DRILL,TWIST
5120-00-261-2815INTERCHANGEABLE
SOCKET,SOCKET WRENCH
1660-00-716-1692INTERCHANGEABLE
NOZZLE,COOLING TURBINE
206838
5950-01-088-9615INTERCHANGEABLE
COIL,ELECTRICAL
13336
2530-01-261-5505INTERCHANGEABLE
TIE ROD,STEERING
206838
4730-01-273-5735INTERCHANGEABLE
COUPLING,PIPE
13336
5120-01-346-0924INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
13336
6545-01-576-6816INTERCHANGEABLE
MEDICAL RESUPPLY SET,TACTICAL CO
UA 326A

Frequently Asked Questions

What is NSN 3020-00-528-8449?

NSN 3020-00-528-8449 is a Gear,spur, manufactured by Grindley Manufacturing Inc., classified under FSC 3020 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3020-00-528-8449?

NSN 3020-00-528-8449 has 9 cross-referenced part numbers: 831520 (Grindley Manufacturing Inc.), 13336 (Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc.), 206838REVD (Kidde-Fenwal, Llc), K206838 (Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc), K206838 (Davey Compressor Co Div of Keco Industries Inc) and 4 more.

What NSN replaces 3020-00-528-8449?

There are 10 known substitutes for 3020-00-528-8449: 4730-00-011-8831, 6240-00-141-5282, 5133-00-189-9281 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 831520?

Key specifications for 831520: Tooth Form: STANDARD; Pressure Angle: 20.0000 DEGREES; Nominal Outside Diameter: 0.7987 INCHES IN; Bore Style: PLAIN BOTH ENDS. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3020-00-528-8449 still in active supply?

NSN 3020-00-528-8449 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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