PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3D8749Guard,mechanical Drive

Caterpillar Inc Div Caterpillar Defense · NSN 3020-01-181-8557 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-01-181-8557 — this item is cataloged by the U.S. Government under National Stock Number 3020-01-181-8557. Primary manufacturer part number: 3D8749.
Features
  • Guard,mechanical Drive — FSC 3020
  • 2 verified cross-references
  • Primary manufacturer: Caterpillar Inc Div Caterpillar Defense
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Guard,mechanical Drive, cataloged under National Stock Number 3020-01-181-8557, 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. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameGuard,mechanical Drive
FSC / FSG3020 — No Item Name Available (FSG 30)
ManufacturersBergstrom Inc (CAGE 99688); Caterpillar Inc Div Caterpillar Defense (CAGE 11083)
Technical Specifications
ParameterValue
NSN3020-01-181-8557
Primary Part Number3D8749
Item NameGuard,mechanical Drive
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerCaterpillar Inc Div Caterpillar Defense
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
3455-00-185-4899 INTERCHANGEABLE
File,rotary
5305-00-514-8042 INTERCHANGEABLE
Setscrew
1650-00-516-75628195-1 INTERCHANGEABLE
Dampener,fluid Pressure
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
5120-01-138-74888195 INTERCHANGEABLE
Alignment Tool,electronic Equipm
Gc/waldom Inc
3040-01-437-2306M-3465-29 INTERCHANGEABLE
Actuator,mechanical,nonaircraft
Yale Industrial Products, Inc. Div Duff Norton Company
5940-01-512-87028195 INTERCHANGEABLE
Terminal,lug
Keystone Electronics Corp
6110-01-619-4459 INTERCHANGEABLE
Panel,power Distribution
6105-01-643-42268195 INTERCHANGEABLE
Motor Assembly,electric
All Weather, Inc. Dba All Weather Inc
Cross-Reference Index
Part NumberManufacturer
8195 Bergstrom Inc (USA)
3D8749 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
Related Parts
3455-00-185-4899INTERCHANGEABLE
FILE,ROTARY
5305-00-514-8042INTERCHANGEABLE
SETSCREW
1650-00-516-7562INTERCHANGEABLE
DAMPENER,FLUID PRESSURE
8195-1
5120-01-138-7488INTERCHANGEABLE
ALIGNMENT TOOL,ELECTRONIC EQUIPM
8195
3040-01-437-2306INTERCHANGEABLE
ACTUATOR,MECHANICAL,NONAIRCRAFT
M-3465-29
5940-01-512-8702INTERCHANGEABLE
TERMINAL,LUG
8195
6110-01-619-4459INTERCHANGEABLE
PANEL,POWER DISTRIBUTION
6105-01-643-4226INTERCHANGEABLE
MOTOR ASSEMBLY,ELECTRIC
8195

Frequently Asked Questions

What is NSN 3020-01-181-8557?

NSN 3020-01-181-8557 is a Guard,mechanical Drive, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-01-181-8557?

NSN 3020-01-181-8557 has 2 cross-referenced part numbers: 8195 (Bergstrom Inc), 3D8749 (Caterpillar Inc Div Caterpillar Defense).

What NSN replaces 3020-01-181-8557?

There are 8 known substitutes for 3020-01-181-8557: 3455-00-185-4899, 5305-00-514-8042, 1650-00-516-7562 and 5 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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