NSN 3020-01-181-3802 · NIIN 011813802 · Part number 40057
Republic Machinery Co Inc Dba Republic Lagun Machine Tool Co · FSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain · FSG 30 — Mechanical Power Transmission Equipment · CAGE 30870
Government record, cited
NSN 3020-01-181-3802 — this item is cataloged by the U.S. Government under National Stock Number 3020-01-181-3802. Manufacturer of record part number: 40057.
Also searched as3020-01-181-3802 ·
3020011813802 ·
NIIN 011813802 ·
01-181-3802 ·
FSC 3020 Gears, Pulleys, Sprockets, and Transmission Chain · CAGE 30870 · 40057
Manufacturer of record: Republic Machinery Co Inc Dba Republic Lagun Machine Tool Co
Identification
NSN: 3020-01-181-3802
NIIN: 011813802
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
FSG: 30 — Mechanical Power Transmission Equipment
Primary part number: 40057
Manufacturer: Republic Machinery Co Inc Dba Republic Lagun Machine Tool Co
General Description
The Gear,helical, cataloged under National Stock Number 3020-01-181-3802, 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 Republic Machinery Co Inc Dba Republic Lagun Machine Tool Co. Government technical data includes 1 specification, 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. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
3020-01-181-3802
Primary Part Number
40057
Item Name
Gear,helical
FSC / FSG
3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain
Manufacturer
Republic Machinery Co Inc Dba Republic Lagun Machine Tool Co
Status
ACTIVE
Teeth Quantity
20
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items3
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
6550-01-317-8703R40057POSSIBLE MATCH
GRAM'S IODINE SOLUTION
Possible match (shared part number)Remel Inc.
4820-01-470-76394005-7POSSIBLE MATCH
VALVE,CHECK
Possible match (shared part number)Aerospace Systems and Components, Inc.
8465-01-541-799840057POSSIBLE MATCH
HYDRATION SYSTEM
Possible match (shared part number)Camelbak Products, Llc Dba Camelbak
Republic Machinery Co Inc Dba Republic Lagun Machine Tool Co (USA)
Related Parts
6550-01-317-8703POSSIBLE MATCH
GRAM'S IODINE SOLUTION
R40057
4820-01-470-7639POSSIBLE MATCH
VALVE,CHECK
4005-7
8465-01-541-7998POSSIBLE MATCH
HYDRATION SYSTEM
40057
Frequently Asked Questions
What is NSN 3020-01-181-3802?
NSN 3020-01-181-3802 is a Gear,helical, manufactured by Republic Machinery Co Inc Dba Republic Lagun Machine Tool Co, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
What part numbers are listed for NSN 3020-01-181-3802?
NSN 3020-01-181-3802 has 1 manufacturer part number on file: 40057 (Republic Machinery Co Inc Dba Republic Lagun Machine Tool Co).
What NSN replaces 3020-01-181-3802?
3 possible matches (shared part number, not a government interchangeability claim): 6550-01-317-8703, 4820-01-470-7639, 8465-01-541-7998. Verify interchangeability with system specifications before substitution.
What are the specifications of 40057?
Key specifications for 40057: Teeth Quantity: 20. 1 specification is documented in the U.S. Government catalog.
Is NSN 3020-01-181-3802 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.