PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7F7715Gear,worm

Caterpillar Inc Div Caterpillar Defense · NSN 3020-00-339-1628 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-339-1628 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-339-1628. Primary manufacturer part number: 7F7715.
Features
  • Gear,worm — FSC 3020
  • Nominal Outside Diameter: 3.400 INCHES IN
  • Nominal Overall Length: 6.280 INCHES IN
  • Thread Form Direction: LEFT-HAND
  • 2 verified cross-references
  • Primary manufacturer: Caterpillar Inc Div Caterpillar Defense
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
General Description

The Gear,worm, cataloged under National Stock Number 3020-00-339-1628, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-339-1628
Primary Part Number7F7715
Item NameGear,worm
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerCaterpillar Inc Div Caterpillar Defense
StatusACTIVE
Nominal Outside Diameter3.400 INCHES IN
Nominal Overall Length6.280 INCHES IN
Thread Form DirectionLEFT-HAND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
3455-00-007-9629 INTERCHANGEABLE
File,rotary
5310-00-178-961210A1914842 INTERCHANGEABLE
Washer,flat
Fwd Seagrave Holdings Lp
6625-00-488-520650657 INTERCHANGEABLE
Voltmeter
Rogerson Kratos
4320-01-111-410531088 INTERCHANGEABLE
Valve,discharge
Gardner Denver Water Jetting Systems, Inc. Div Engineered Package Group
3040-01-359-25225065-7 INTERCHANGEABLE
Hub,body
Thompson Emery Machine & Supply Co
4820-01-583-106650657 INTERCHANGEABLE
Valve,regulating,fluid Pressure
G.s. Blodgett, Llc Div Blodgett
Cross-Reference Index
Part NumberManufacturer
7F7715 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
50657 Trw Inc Trw Commercial Steering Div (USA)
Related Parts
3455-00-007-9629INTERCHANGEABLE
FILE,ROTARY
5310-00-178-9612INTERCHANGEABLE
WASHER,FLAT
10A1914842
6625-00-488-5206INTERCHANGEABLE
VOLTMETER
50657
4320-01-111-4105INTERCHANGEABLE
VALVE,DISCHARGE
31088
3040-01-359-2522INTERCHANGEABLE
HUB,BODY
5065-7
4820-01-583-1066INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
50657

Frequently Asked Questions

What is NSN 3020-00-339-1628?

NSN 3020-00-339-1628 is a Gear,worm, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-339-1628?

NSN 3020-00-339-1628 has 2 cross-referenced part numbers: 7F7715 (Caterpillar Inc Div Caterpillar Defense), 50657 (Trw Inc Trw Commercial Steering Div).

What NSN replaces 3020-00-339-1628?

There are 6 known substitutes for 3020-00-339-1628: 3455-00-007-9629, 5310-00-178-9612, 6625-00-488-5206 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 7F7715?

Key specifications for 7F7715: Nominal Outside Diameter: 3.400 INCHES IN; Nominal Overall Length: 6.280 INCHES IN; Thread Form Direction: LEFT-HAND. 3 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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