PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

GD103-1Gear,helical

Wisconsin Motors, Llc · NSN 3020-00-961-6160 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-961-6160 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-961-6160. Primary manufacturer part number: GD103-1.
Features
  • Gear,helical — FSC 3020
  • Helix Angle: 18.7665 DEGREES
  • Pressure Angle: 20.0000 DEGREES
  • Tooth Form: STANDARD
  • Body Style: PLAIN, SOLID
  • Bore Nominal Diameter: 0.624 INCHES BOTH ENDS IN
  • Face Nominal Width: 0.480 INCHES IN
  • Nominal Distance Between Body Face and Protruding Hub End: 0.016 INCHES FIRST END IN
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Steel Overall construction
General Description

The Gear,helical, cataloged under National Stock Number 3020-00-961-6160, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Wisconsin Motors, Llc. Government technical data includes 16 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: Cancelled.

Technical Specifications
ParameterValue
NSN3020-00-961-6160
Primary Part NumberGD103-1
Item NameGear,helical
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerWisconsin Motors, Llc
StatusCANCELLED
Helix Angle18.7665 DEGREES
Pressure Angle20.0000 DEGREES
Tooth FormSTANDARD
Body StylePLAIN, SOLID
Bore Nominal Diameter0.624 INCHES BOTH ENDS IN
Face Nominal Width0.480 INCHES IN
Nominal Distance Between Body Face and Protruding Hub End0.016 INCHES FIRST END IN
Bore StylePLAIN BOTH ENDS
Style DesignatorPROTRUDING HUB
Tooth DirectionLEFT
Nominal Outside Diameter3.045 INCHES IN
Teeth TypeSINGLE HELIX
Pitch Diameter2.8480 INCHES NOMINAL IN
Material Document and ClassificationMIL-S-16974,GRADEMOV-30 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MaterialSTEEL OVERALL
Teeth Quantity27
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
6105-00-134-653765-04 INTERCHANGEABLE
Motor,control
Arc Systems Inc
5331-00-171-5371KS1321 INTERCHANGEABLE
O-Ring
Minor Rubber Co Inc
5120-00-181-687856040 INTERCHANGEABLE
Wrench,relay Contac
General Dynamics Mission Systems, Inc.
5220-00-321-20526504 INTERCHANGEABLE
Gage,profile
Allison Transmission Inc Dba Allison Transmission, Inc
6685-00-527-6221117312 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ametek, Inc. Div Aerospace & Defense
5950-00-647-5772 INTERCHANGEABLE
Transformer,power
5940-00-732-12947321294 INTERCHANGEABLE
Terminal,stud
U S Army Tank Automotive Command Amsta-Im-Mm
6645-00-864-6794M3971/1-6-S INTERCHANGEABLE
Meter,time Totalizing
Maxima Technologies & Systems Llc
4730-00-871-672912273192 INTERCHANGEABLE
Clamp,hose
U S Army Tank Automotive Command Amsta-Im-Mm
6210-01-021-19543652-4-12-53110 INTERCHANGEABLE
Light,indicator
Sorenson Lighted Controls Inc
Cross-Reference Index
Part NumberManufacturer
GD103 Wisconsin Motors, Llc (USA)
56040 Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp. (USA)
GD103-1 PRIMARY Wisconsin Motors, Llc (USA)
6504 Wico-Prestolite Co the Div of Eltra Corp (USA)
Related Parts
6105-00-134-6537INTERCHANGEABLE
MOTOR,CONTROL
65-04
5331-00-171-5371INTERCHANGEABLE
O-RING
KS1321
5120-00-181-6878INTERCHANGEABLE
WRENCH,RELAY CONTAC
56040
5220-00-321-2052INTERCHANGEABLE
GAGE,PROFILE
6504
6685-00-527-6221INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
117312
5950-00-647-5772INTERCHANGEABLE
TRANSFORMER,POWER
5940-00-732-1294INTERCHANGEABLE
TERMINAL,STUD
7321294
6645-00-864-6794INTERCHANGEABLE
METER,TIME TOTALIZING
M3971/1-6-S
4730-00-871-6729INTERCHANGEABLE
CLAMP,HOSE
12273192
6210-01-021-1954INTERCHANGEABLE
LIGHT,INDICATOR
3652-4-12-53110
7830-01-075-0769INTERCHANGEABLE
MEDICINE BALL
MB-LARGE
6695-01-097-0441INTERCHANGEABLE
TESTER,OXYGEN MASK
TA MQ-1A

Frequently Asked Questions

What is NSN 3020-00-961-6160?

NSN 3020-00-961-6160 is a Gear,helical, manufactured by Wisconsin Motors, Llc, classified under FSC 3020 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3020-00-961-6160?

NSN 3020-00-961-6160 has 4 cross-referenced part numbers: GD103 (Wisconsin Motors, Llc), 56040 (Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.), GD103-1 (Wisconsin Motors, Llc), 6504 (Wico-Prestolite Co the Div of Eltra Corp).

What NSN replaces 3020-00-961-6160?

There are 12 known substitutes for 3020-00-961-6160: 6105-00-134-6537, 5331-00-171-5371, 5120-00-181-6878 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of GD103-1?

Key specifications for GD103-1: Helix Angle: 18.7665 DEGREES; Pressure Angle: 20.0000 DEGREES; Tooth Form: STANDARD; Body Style: PLAIN, SOLID. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3020-00-961-6160 still in active supply?

NSN 3020-00-961-6160 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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