PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

GP25-42Gear,spur

Secs Inc · NSN 3020-00-832-4040 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-832-4040 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-832-4040. Primary manufacturer part number: GP25-42.
Features
  • Gear,spur — FSC 3020
  • Pitch Diameter: 0.8750 INCHES NOMINAL IN
  • Body Style: PLAIN, SOLID
  • Style Designator: PROTRUDING HUB
  • Nominal Distance Between Body Face and Protruding Hub End: 0.218 INCHES FIRST END IN
  • Surface Treatment: ANODIZE OVERALL
  • Bore Nominal Diameter: 0.250 INCHES BOTH ENDS IN
  • Bore Style: PLAIN BOTH ENDS
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Aluminum Alloy 2024 Overall construction
General Description

The Gear,spur, cataloged under National Stock Number 3020-00-832-4040, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Secs Inc. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 15 commercial cross-references from 14 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3020-00-832-4040
Primary Part NumberGP25-42
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerSecs Inc
StatusCANCELLED
Pitch Diameter0.8750 INCHES NOMINAL IN
Body StylePLAIN, SOLID
Style DesignatorPROTRUDING HUB
Nominal Distance Between Body Face and Protruding Hub End0.218 INCHES FIRST END IN
Surface TreatmentANODIZE OVERALL
Bore Nominal Diameter0.250 INCHES BOTH ENDS IN
Bore StylePLAIN BOTH ENDS
Pressure Angle20.0000 DEGREES
Material Document and ClassificationQQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Face Nominal Width0.125 INCHES IN
Teeth Quantity42
Hub Style DesignatorPINNED FIRST END
Hub Nominal Diameter0.500 INCHES FIRST END IN
Nominal Outside Diameter0.917 INCHES IN
MaterialALUMINUM ALLOY 2024 OVERALL
Tooth FormSTANDARD
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
5315-00-188-9360CA6381PC30 INTERCHANGEABLE
Key,machine
Air & Liquid Systems Corporation Dba Buffalo Pumps
2805-00-353-793901611 INTERCHANGEABLE
Guide
Safeguard Powertech Systems
5360-01-077-8856 INTERCHANGEABLE
Spring,helical,compression
5305-01-118-411515442 INTERCHANGEABLE
Screw,cap,hexagon Head
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
2030-01-205-546015442 INTERCHANGEABLE
Grab,clutch
Calgon Carbon Uv Technologies Llc Dba Hyde Marine
5330-01-276-8480 INTERCHANGEABLE
Gasket
6695-01-343-8043G-442 INTERCHANGEABLE
Dew Point Tester
L3 Technologies, Inc. Div L3 Keo
3020-01-426-034980B10-1 1/4 INTERCHANGEABLE
Sprocket Wheel
Altra Industrial Motion Corp.
Cross-Reference Index
Part NumberManufacturer
GP25-42 Secs Inc (USA)
347C500A1C4D042 Westinghouse Electric Corp (USA)
4842H20-1-4 Harmonic Drive L.l.c. (USA)
347C500A1C4D042 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
LAA-E3-42 Nordex Inc (USA)
0461C0053-1 Martin Marietta Technologies Inc Sub of Martin Marietta Corp Aero and Naval Systems (USA)
LAA-E3-42SS Nordex Inc (USA)
G4-42 Roller Bearing Co of America, Inc Div Pic Design (USA)
14AN42 Altra Industrial Motion Corp. (USA)
R348477-18 Raytheon Company (USA)
PG4726-42 Atlas Chain Co
DG4T42 Reed H B and Co Inc (USA)
154-42 Southern Gear & Machine Inc (USA)
LAA-E3-42 Nordex, Incorporated Dba Nordex Inc (USA)
P48A26-42 W. M. Berg, Inc. (USA)
Related Parts
5315-00-188-9360INTERCHANGEABLE
KEY,MACHINE
CA6381PC30
2805-00-353-7939INTERCHANGEABLE
GUIDE
01611
5360-01-077-8856INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
5305-01-118-4115INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
15442
2030-01-205-5460INTERCHANGEABLE
GRAB,CLUTCH
15442
5330-01-276-8480INTERCHANGEABLE
GASKET
6695-01-343-8043INTERCHANGEABLE
DEW POINT TESTER
G-442
3020-01-426-0349INTERCHANGEABLE
SPROCKET WHEEL
80B10-1 1/4

Frequently Asked Questions

What is NSN 3020-00-832-4040?

NSN 3020-00-832-4040 is a Gear,spur, manufactured by Secs Inc, classified under FSC 3020 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3020-00-832-4040?

NSN 3020-00-832-4040 has 15 cross-referenced part numbers: GP25-42 (Secs Inc), 347C500A1C4D042 (Westinghouse Electric Corp), 4842H20-1-4 (Harmonic Drive L.l.c.), 347C500A1C4D042 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), LAA-E3-42 (Nordex Inc) and 10 more.

What NSN replaces 3020-00-832-4040?

There are 8 known substitutes for 3020-00-832-4040: 5315-00-188-9360, 2805-00-353-7939, 5360-01-077-8856 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of GP25-42?

Key specifications for GP25-42: Pitch Diameter: 0.8750 INCHES NOMINAL IN; Body Style: PLAIN, SOLID; Style Designator: PROTRUDING HUB; Nominal Distance Between Body Face and Protruding Hub End: 0.218 INCHES FIRST END IN. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3020-00-832-4040 still in active supply?

NSN 3020-00-832-4040 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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