NSN 3020-00-448-3852 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-448-3852. Manufacturer of record part number: 74521.
Also searched as3020-00-448-3852 ·
3020004483852 ·
NIIN 004483852 ·
00-448-3852 ·
FSC 3020 Gears, Pulleys, Sprockets, and Transmission Chain · CAGE 57712 · 74521
Nominal Distance Between Body Face and Protruding Hub End: 0.188 INCHES SECOND END IN
Teeth Type: STRAIGHT
Identification
NSN: 3020-00-448-3852
NIIN: 004483852
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
FSG: 30 — Mechanical Power Transmission Equipment
Primary part number: 74521
Manufacturer: Telemechanics Inc
General Description
The Gear,bevel, cataloged under National Stock Number 3020-00-448-3852, 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 Telemechanics Inc. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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
3020-00-448-3852
Primary Part Number
74521
Item Name
Gear,bevel
FSC / FSG
3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain
Manufacturer
Telemechanics Inc
Status
ACTIVE
Bore Nominal Diameter
0.125 INCHES BOTH ENDS IN
Hub Nominal Diameter
0.313 INCHES FIRST END IN
Teeth Quantity
36
Body Style
PLAIN, SOLID
Bore Style
PLAIN BOTH ENDS
Nominal Distance Between Body Face and Protruding Hub End
0.188 INCHES SECOND END IN
Teeth Type
STRAIGHT
Style Designator
PERIPHERAL FACE, BACK HUB PROTRUDING
Hub Style Designator
PLAIN FIRST END
Material
STEEL OVERALL
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 Items5
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
1630-00-998-7900442-4POSSIBLE MATCH
PISTON,DISK BRAKE
Possible match (shared part number)Goodrich Corporation Div Collins Aerospace, Landing Systems (wheels & Brakes)
2995-01-089-416474521POSSIBLE MATCH
LEVER,VALVE SWITCH
Possible match (shared part number)Woodward, Inc. Div Fuel Systems and Controls
5330-01-484-51517452-1POSSIBLE MATCH
GASKET
Possible match (shared part number)Luminescent Systems, Inc. Dba Lsi Div Lsi-Nh
6605-01-565-4897074833-0000-00POSSIBLE MATCH
INDICATOR,BEARING-HEADING
Possible match (shared part number)Northrop Grumman Systems Corporation
5130-01-734-170674521POSSIBLE MATCH
BIT,SCREWDRIVER
Possible match (shared part number)General Services Administration Federal Supply Service
NSN 3020-00-448-3852 is a Gear,bevel, manufactured by Telemechanics Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
What part numbers are listed for NSN 3020-00-448-3852?
NSN 3020-00-448-3852 has 1 manufacturer part number on file: 74521 (Telemechanics Inc).
What NSN replaces 3020-00-448-3852?
5 possible matches (shared part number, not a government interchangeability claim): 1630-00-998-7900, 2995-01-089-4164, 5330-01-484-5151. Verify interchangeability with system specifications before substitution.
What are the specifications of 74521?
Key specifications for 74521: Bore Nominal Diameter: 0.125 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.313 INCHES FIRST END IN; Teeth Quantity: 36; Body Style: PLAIN, SOLID. 10 specifications are documented in the U.S. Government catalog.
Is NSN 3020-00-448-3852 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.