NSN 3020-01-538-3674 · NIIN 015383674 · Part number 157D4409
General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems · FSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain · FSG 30 — Mechanical Power Transmission Equipment · CAGE 05606
Government record, cited
NSN 3020-01-538-3674 — this item is cataloged by the U.S. Government under National Stock Number 3020-01-538-3674. Manufacturer of record part number: 157D4409.
Also searched as3020-01-538-3674 ·
3020015383674 ·
NIIN 015383674 ·
01-538-3674 ·
FSC 3020 Gears, Pulleys, Sprockets, and Transmission Chain · CAGE 05606 · 157D4409
Manufacturer of record: General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems
Identification
NSN: 3020-01-538-3674
NIIN: 015383674
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
FSG: 30 — Mechanical Power Transmission Equipment
Primary part number: 157D4409
Manufacturer: General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems
General Description
The Gear,spur, cataloged under National Stock Number 3020-01-538-3674, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
3020-01-538-3674
Primary Part Number
157D4409
Item Name
Gear,spur
FSC / FSG
3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain
Manufacturer
General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems
General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems (USA)
No interchangeability data on file.
Other items in FSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3020-00-000-0091
GEAR,SPUR
3020-00-001-0027
3020-00-001-0027 · Item name not on file
3020-00-001-0028
3020-00-001-0028 · Item name not on file
3020-00-001-0063
3020-00-001-0063 · Item name not on file
3020-00-001-0064
3020-00-001-0064 · Item name not on file
3020-00-001-0066
3020-00-001-0066 · Item name not on file
3020-00-001-0071
3020-00-001-0071 · Item name not on file
3020-00-001-0072
3020-00-001-0072 · Item name not on file
Frequently Asked Questions
What is NSN 3020-01-538-3674?
NSN 3020-01-538-3674 is a Gear,spur, manufactured by General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
What part numbers are listed for NSN 3020-01-538-3674?
NSN 3020-01-538-3674 has 1 manufacturer part number on file: 157D4409 (General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems).
What are the specifications of 157D4409?
Key specifications for 157D4409: Teeth Quantity: 35; Special Features: TOOTH FORM - ANSI B6.1-1968; MESHES WITH 132D1903 GEAR; DIAMETRAL PITCH (CUTTER) - 11.500; PITCH DIA (REF) 3.043; BASE DIAMETER (REF) 2.859; DIAMETER OF PINS 0.157; Part Name Assigned by Controlling Agency: GEAR, SPUR, ELEMENT; End Item Identification: UNIVERSAL AMMUNITION LOADING (UAL) SYSTEM. 3 specifications are documented in the U.S. Government catalog.
Is NSN 3020-01-538-3674 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.