NSN 3020-01-157-4393 — this item is cataloged by the U.S. Government under National Stock Number 3020-01-157-4393. Manufacturer of record part number: 2D124.
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
FSG: 30 — Mechanical Power Transmission Equipment
Primary part number: 2D124
Manufacturer: Dynalec Corporation
General Description
The Gear,spur, cataloged under National Stock Number 3020-01-157-4393, 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 Dynalec Corporation. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government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
3020-01-157-4393
Primary Part Number
2D124
Item Name
Gear,spur
FSC / FSG
3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain
Manufacturer
Dynalec Corporation
Status
ACTIVE
Teeth Quantity
16
Pitch Diameter
0.5000 INCHES NOMINAL IN
Nominal Outside Diameter
0.563 INCHES IN
Pressure Angle
20.0000 DEGREES
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL Q — CCL Item — Commerce Control List
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items8
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
3020-01-157-43942D126POSSIBLE MATCH
GEAR,SPUR
Possible match (shared part number)Dynalec Corporation
6320-01-157-4400DL-13200-1POSSIBLE MATCH
DUMMY TRANSMITTER,SHIP'S DISTANC
Possible match (shared part number)Dynalec Corporation
3020-01-158-40852D54POSSIBLE MATCH
GEAR,SPUR
Possible match (shared part number)Dynalec Corporation
3020-01-158-40862D98XPOSSIBLE MATCH
GEAR,SPUR
Possible match (shared part number)Dynalec Corporation
3020-01-158-40872D55POSSIBLE MATCH
GEAR,WORM WHEEL
Possible match (shared part number)Dynalec Corporation
3020-01-158-46122D56POSSIBLE MATCH
GEAR,WORM
Possible match (shared part number)Dynalec Corporation
3040-01-158-87062DY2POSSIBLE MATCH
DIFFERENTIAL GEAR UNIT
Possible match (shared part number)Dynalec Corporation
3020-01-158-93962D24POSSIBLE MATCH
GEAR,SPUR
Possible match (shared part number)Dynalec Corporation
NSN 3020-01-157-4393 is a Gear,spur, manufactured by Dynalec Corporation, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
What part numbers are listed for NSN 3020-01-157-4393?
NSN 3020-01-157-4393 has 2 manufacturer part numbers on file: 2D124 (Dynalec Corporation), DL-13200-1 PIECE 124 (Dynalec Corporation).
What NSN replaces 3020-01-157-4393?
8 possible matches (shared part number, not a government interchangeability claim): 3020-01-157-4394, 6320-01-157-4400, 3020-01-158-4085. Verify interchangeability with system specifications before substitution.
What are the specifications of 2D124?
Key specifications for 2D124: Teeth Quantity: 16; Pitch Diameter: 0.5000 INCHES NOMINAL IN; Nominal Outside Diameter: 0.563 INCHES IN; Pressure Angle: 20.0000 DEGREES. 4 specifications are documented in the U.S. Government catalog.
Is NSN 3020-01-157-4393 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.
What is the DEMIL code for NSN 3020-01-157-4393?
NSN 3020-01-157-4393 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.