PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1285Gear Cluster

Gsl Manufacturing Co. · NSN 3020-00-919-8070 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-919-8070 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-919-8070. Primary manufacturer part number: 1285.
Features
  • Gear Cluster — FSC 3020
  • Hub Nominal Diameter: 0.187 INCHES BOTH ENDS IN
  • Hub Nominal Length: 0.156 INCHES FIRST END IN
  • Hub Nominal Diameter: 0.370 INCHES BETWEEN FIRST AND SECOND GEAR IN
  • Nominal Overall Length: 0.490 INCHES IN
  • Design Type: SPUR SECOND GEAR
  • Material Document and Classification: FED STD 66 FED STD SINGLE MATERIAL RESPONSE AND AISI/SAE 4340 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Nominal Outside Diameter: 0.553 INCHES FIRST GEAR IN
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Steel Comp 4340 Overall construction
General Description

The Gear Cluster, cataloged under National Stock Number 3020-00-919-8070, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Gsl Manufacturing Co.. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-919-8070
Primary Part Number1285
Item NameGear Cluster
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerGsl Manufacturing Co.
StatusACTIVE
Hub Nominal Diameter0.187 INCHES BOTH ENDS IN
Hub Nominal Length0.156 INCHES FIRST END IN
Hub Nominal Diameter0.370 INCHES BETWEEN FIRST AND SECOND GEAR IN
Nominal Overall Length0.490 INCHES IN
Design TypeSPUR SECOND GEAR
Material Document and ClassificationFED STD 66 FED STD SINGLE MATERIAL RESPONSE AND AISI/SAE 4340 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Nominal Outside Diameter0.553 INCHES FIRST GEAR IN
Precision ClassificationQUALITY NUMBER 10 OR QUALITY NUMBER 11 ALL GEARS
Bore Nominal Diameter0.093 INCHES BOTH ENDS IN
Hub Style DesignatorPLAIN BOTH ENDS
Design TypeSPUR FIRST GEAR
MaterialSTEEL COMP 4340 OVERALL
Hub Nominal Length0.079 INCHES BETWEEN FIRST AND SECOND GEAR IN
Hardness Rating54.0 ROCKWELL C NOMINAL OVERALL
Bore StylePLAIN BOTH ENDS
Nominal Outside Diameter1.447 INCHES SECOND GEAR IN
Hub Nominal Length0.106 INCHES SECOND END IN
Hub Style DesignatorPLAIN BETWEEN FIRST AND SECOND GEAR
ConstructionSOLID
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
1660-00-026-4196 INTERCHANGEABLE
Housing,pull Cable
5905-00-196-2782 INTERCHANGEABLE
Resistor,fixed,wire Wound
5310-00-208-8672 INTERCHANGEABLE
Nut,plain,hexagon
6685-00-404-1285 INTERCHANGEABLE
Jack Screw Assembly
5950-00-409-72681-285 INTERCHANGEABLE
Transformer,power Autotransforme
Eldec Aerospace Corp
5140-00-529-2517DWG5140-00-529-2517 INTERCHANGEABLE
Belt,tool,repairman's
General Services Administration Federal Supply Service
5140-00-529-2691DWG5140-00-529-2691 INTERCHANGEABLE
Belt,tool,repairman's
General Services Administration Federal Supply Service
5140-00-529-2694DWG5140-00-529-2694 INTERCHANGEABLE
Belt,tool,repairman's
General Services Administration Federal Supply Service
5930-00-636-1525SM-C-145960 INTERCHANGEABLE
Switch,push
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5930-00-669-80007693 INTERCHANGEABLE
Switch,push-Pull
Brinkley Technology Group Llc Dba Hercules Manufacturing
Cross-Reference Index
Part NumberManufacturer
1285 PRIMARY Gsl Manufacturing Co. (USA)
1285 Star Tool and Engineering Co Inc (USA)
1285 Overton Chicago Gear Corporation (USA)
Related Parts
1660-00-026-4196INTERCHANGEABLE
HOUSING,PULL CABLE
5905-00-196-2782INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
5310-00-208-8672INTERCHANGEABLE
NUT,PLAIN,HEXAGON
6685-00-404-1285INTERCHANGEABLE
JACK SCREW ASSEMBLY
5950-00-409-7268INTERCHANGEABLE
TRANSFORMER,POWER AUTOTRANSFORME
1-285
5140-00-529-2517INTERCHANGEABLE
BELT,TOOL,REPAIRMAN'S
DWG5140-00-529-2517
5140-00-529-2691INTERCHANGEABLE
BELT,TOOL,REPAIRMAN'S
DWG5140-00-529-2691
5140-00-529-2694INTERCHANGEABLE
BELT,TOOL,REPAIRMAN'S
DWG5140-00-529-2694
5930-00-636-1525INTERCHANGEABLE
SWITCH,PUSH
SM-C-145960
5930-00-669-8000INTERCHANGEABLE
SWITCH,PUSH-PULL
7693
6625-00-950-7918INTERCHANGEABLE
PROBE,TEST
1285
5365-01-020-8870INTERCHANGEABLE
BUSHING,PAPER BRACK

Frequently Asked Questions

What is NSN 3020-00-919-8070?

NSN 3020-00-919-8070 is a Gear Cluster, manufactured by Gsl Manufacturing Co., classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-919-8070?

NSN 3020-00-919-8070 has 3 cross-referenced part numbers: 1285 (Gsl Manufacturing Co.), 1285 (Star Tool and Engineering Co Inc), 1285 (Overton Chicago Gear Corporation).

What NSN replaces 3020-00-919-8070?

There are 12 known substitutes for 3020-00-919-8070: 1660-00-026-4196, 5905-00-196-2782, 5310-00-208-8672 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1285?

Key specifications for 1285: Hub Nominal Diameter: 0.187 INCHES BOTH ENDS IN; Hub Nominal Length: 0.156 INCHES FIRST END IN; Hub Nominal Diameter: 0.370 INCHES BETWEEN FIRST AND SECOND GEAR IN; Nominal Overall Length: 0.490 INCHES IN. 19 total characteristics are documented in the Federal Logistics Information System.

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