PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21337Gear,spur

Maradyne Corporation · NSN 3020-00-391-8094 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-391-8094 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-391-8094. Primary manufacturer part number: 21337.
Features
  • Gear,spur — FSC 3020
  • Bore Style: STRAIGHT SPLINE BOTH ENDS
  • Precision Classification: QUALITY NUMBER 9
  • Teeth Quantity: 18
  • Bore Nominal Diameter: 0.7613 INCHES BOTH ENDS IN
  • Hub Nominal Diameter: 1.062 INCHES FIRST END IN
  • Pressure Angle: 20.0000 DEGREES
  • Tooth Form: STANDARD
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 3020-00-391-8094, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Maradyne Corporation. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 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
NSN3020-00-391-8094
Primary Part Number21337
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerMaradyne Corporation
StatusACTIVE
Bore StyleSTRAIGHT SPLINE BOTH ENDS
Precision ClassificationQUALITY NUMBER 9
Teeth Quantity18
Bore Nominal Diameter0.7613 INCHES BOTH ENDS IN
Hub Nominal Diameter1.062 INCHES FIRST END IN
Pressure Angle20.0000 DEGREES
Tooth FormSTANDARD
Body StylePLAIN, SOLID
Hub Style DesignatorPLAIN FIRST END
Spline Quantity6 BOTH ENDS
Nominal Outside Diameter1.666 INCHES IN
MaterialSTEEL OVERALL
Hardness Rating55.0 ROCKWELL C MINIMUM AND 58.0 ROCKWELL C MAXIMUM BODY
Face Nominal Width1.145 INCHES IN
Nominal Distance Between Body Face and Protruding Hub End0.040 INCHES FIRST END IN
Style DesignatorPROTRUDING HUB
Pitch Diameter1.5000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5360-00-139-721521337 INTERCHANGEABLE
Spring,helical,compression
Barksdale, Inc
3030-00-180-2101 INTERCHANGEABLE
Belts,v,matched Set
4710-00-212-7303 INTERCHANGEABLE
Pipe,metallic
3455-00-231-3496 INTERCHANGEABLE
Cutter,milling,plain
4710-00-269-0207 INTERCHANGEABLE
Pipe,metallic
4710-00-269-0240 INTERCHANGEABLE
Pipe,metallic
4710-00-269-0241 INTERCHANGEABLE
Pipe,metallic
4710-00-269-0242 INTERCHANGEABLE
Pipe,metallic
5315-00-276-4422 INTERCHANGEABLE
Key,machine
5950-00-295-8368 INTERCHANGEABLE
Transformer,radio Frequency
Cross-Reference Index
Part NumberManufacturer
A312 Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems (USA)
21337 PRIMARY Maradyne Corporation (USA)
19123 Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems (USA)
21337 Sycon Corp (USA)
Related Parts
5360-00-139-7215INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
21337
3030-00-180-2101INTERCHANGEABLE
BELTS,V,MATCHED SET
4710-00-212-7303INTERCHANGEABLE
PIPE,METALLIC
3455-00-231-3496INTERCHANGEABLE
CUTTER,MILLING,PLAIN
4710-00-269-0207INTERCHANGEABLE
PIPE,METALLIC
4710-00-269-0240INTERCHANGEABLE
PIPE,METALLIC
4710-00-269-0241INTERCHANGEABLE
PIPE,METALLIC
4710-00-269-0242INTERCHANGEABLE
PIPE,METALLIC
5315-00-276-4422INTERCHANGEABLE
KEY,MACHINE
5950-00-295-8368INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
5855-00-446-5909INTERCHANGEABLE
SPRING HELICAL COMP
13206E7683
4710-00-507-0040INTERCHANGEABLE
PIPE,METALLIC

Frequently Asked Questions

What is NSN 3020-00-391-8094?

NSN 3020-00-391-8094 is a Gear,spur, manufactured by Maradyne Corporation, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-391-8094?

NSN 3020-00-391-8094 has 4 cross-referenced part numbers: A312 (Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems), 21337 (Maradyne Corporation), 19123 (Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems), 21337 (Sycon Corp).

What NSN replaces 3020-00-391-8094?

There are 12 known substitutes for 3020-00-391-8094: 5360-00-139-7215, 3030-00-180-2101, 4710-00-212-7303 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21337?

Key specifications for 21337: Bore Style: STRAIGHT SPLINE BOTH ENDS; Precision Classification: QUALITY NUMBER 9; Teeth Quantity: 18; Bore Nominal Diameter: 0.7613 INCHES BOTH ENDS IN. 18 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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