PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6187AGear,internal

Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic · NSN 3020-00-362-3656 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-362-3656 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-362-3656. Primary manufacturer part number: 6187A.
Features
  • Gear,internal — FSC 3020
  • Body Style: PLAIN, SOLID
  • Mounting Hole Nominal Diameter: 0.406 INCHES AXIALLY THROUGH BODY FIRST END IN
  • Pitch Diameter: 10.5000 INCHES NOMINAL IN
  • Nominal Overall Length: 0.875 INCHES IN
  • Mounting Hole Type and Quantity: 8 PLAIN AXIALLY THROUGH BODY FIRST END
  • Teeth Quantity: 63
  • Bolt Hole Circle Nominal Diameter: 11.625 INCHES AXIALLY THROUGH BODY FIRST END IN
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Iron Overall construction
General Description

The Gear,internal, cataloged under National Stock Number 3020-00-362-3656, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3020-00-362-3656
Primary Part Number6187A
Item NameGear,internal
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerTwin Disc, Incorporated Dba Twin Disc Mid-Atlantic
StatusCANCELLED
Body StylePLAIN, SOLID
Mounting Hole Nominal Diameter0.406 INCHES AXIALLY THROUGH BODY FIRST END IN
Pitch Diameter10.5000 INCHES NOMINAL IN
Nominal Overall Length0.875 INCHES IN
Mounting Hole Type and Quantity8 PLAIN AXIALLY THROUGH BODY FIRST END
Teeth Quantity63
Bolt Hole Circle Nominal Diameter11.625 INCHES AXIALLY THROUGH BODY FIRST END IN
Attachment MethodMOUNTING HOLE
Nominal Outside Diameter12.3725 INCHES IN
Tooth FormSTANDARD
Teeth TypeSPUR
MaterialIRON OVERALL
Pressure Angle20.0000 DEGREES
Style DesignatorPLAIN RING
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 11
2530-00-083-287741461 INTERCHANGEABLE
Knuckle,link
Eaton Aerospace, Llc Dba Jackson South
5950-00-450-5176 INTERCHANGEABLE
Transformer,power
5950-00-535-139441461 INTERCHANGEABLE
Reactor
Meggitt (new Hampshire), Inc
5360-00-597-407616197PCBMS INTERCHANGEABLE
Spring,helical,compression
Ward Leonard Ct Llc
8040-00-826-3535 INTERCHANGEABLE
Adhesive
5365-01-176-7748 INTERCHANGEABLE
Ring,driving Transm
4820-01-252-4740N41461 INTERCHANGEABLE
Cap,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
3040-01-479-4853CB29098-001 INTERCHANGEABLE
Piston,linear Actuating Cylinder
Moog Inc. Dba Ampac-Isp Corp
5930-01-557-6988P62-02 INTERCHANGEABLE
Switch,toggle
Handler Manufacturing Company Inc
5440-01-625-4173P6202 INTERCHANGEABLE
Ladder,safety Step
Werner Co Dba Werner Extruded Products Co
Cross-Reference Index
Part NumberManufacturer
41461 Davey Compressor Co Div of Keco Industries Inc (USA)
P6202 Bomag Usa Sub of United Dominion Industries Ltd (USA)
37354D Navistar International Corporation Dba Navistar (USA)
6187A PRIMARY Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
41461 Drs Environmental Systems Inc (USA)
41461 Hdt Expeditionary Systems Inc (USA)
45550-019-06 Terex Usa, Llc Dba Terex Equipment Services (USA)
37354D PRIMARY Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA)
Related Parts
2530-00-083-2877INTERCHANGEABLE
KNUCKLE,LINK
41461
5950-00-450-5176INTERCHANGEABLE
TRANSFORMER,POWER
5950-00-535-1394INTERCHANGEABLE
REACTOR
41461
5360-00-597-4076INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
16197PCBMS
8040-00-826-3535INTERCHANGEABLE
ADHESIVE
5365-01-176-7748INTERCHANGEABLE
RING,DRIVING TRANSM
4820-01-252-4740INTERCHANGEABLE
CAP,VALVE
N41461
3040-01-479-4853INTERCHANGEABLE
PISTON,LINEAR ACTUATING CYLINDER
CB29098-001
5930-01-557-6988INTERCHANGEABLE
SWITCH,TOGGLE
P62-02
5440-01-625-4173INTERCHANGEABLE
LADDER,SAFETY STEP
P6202
5930-01-693-4135INTERCHANGEABLE
SWITCH,TOGGLE
41461

Frequently Asked Questions

What is NSN 3020-00-362-3656?

NSN 3020-00-362-3656 is a Gear,internal, manufactured by Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic, classified under FSC 3020 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3020-00-362-3656?

NSN 3020-00-362-3656 has 8 cross-referenced part numbers: 41461 (Davey Compressor Co Div of Keco Industries Inc), P6202 (Bomag Usa Sub of United Dominion Industries Ltd), 37354D (Navistar International Corporation Dba Navistar), 6187A (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic), 41461 (Drs Environmental Systems Inc) and 3 more.

What NSN replaces 3020-00-362-3656?

There are 11 known substitutes for 3020-00-362-3656: 2530-00-083-2877, 5950-00-450-5176, 5950-00-535-1394 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 6187A?

Key specifications for 6187A: Body Style: PLAIN, SOLID; Mounting Hole Nominal Diameter: 0.406 INCHES AXIALLY THROUGH BODY FIRST END IN; Pitch Diameter: 10.5000 INCHES NOMINAL IN; Nominal Overall Length: 0.875 INCHES IN. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3020-00-362-3656 still in active supply?

NSN 3020-00-362-3656 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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