PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4N993Bell Assembly

Caterpillar Inc Div Caterpillar Defense · NSN 2940-01-053-4677 · FSC 2940 · No Item Name Available
Verified by PartsTable
NSN 2940-01-053-4677 — this item is cataloged by the U.S. Government under National Stock Number 2940-01-053-4677. Primary manufacturer part number: 4N993.
Features
  • Bell Assembly — FSC 2940
  • 3 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 Bell Assembly, cataloged under National Stock Number 2940-01-053-4677, is classified within Federal Supply Class 2940 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Caterpillar Inc Div Caterpillar Defense. This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameBell Assembly
FSC / FSG2940 — No Item Name Available (FSG 29)
ManufacturersCaterpillar Inc Div Caterpillar Defense (CAGE 11083); Ripley Industries Inc (CAGE 50950)
Technical Specifications
ParameterValue
NSN2940-01-053-4677
Primary Part Number4N993
Item NameBell Assembly
FSC / FSG2940 / 29 — No Item Name Available
ManufacturerCaterpillar Inc Div Caterpillar Defense
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6530-00-104-76396711 INTERCHANGEABLE
Band,personal Identification
Hollister Inc
4730-00-202-7204AN746-14 INTERCHANGEABLE
Clamp,hose
Dana Off Highway Products, Llc
5935-00-222-08196711 INTERCHANGEABLE
Adapter,lampholder to Connector
Hubbell Incorporated (delaware) Dba Wiring Device-Kellems Division
3110-00-263-9011MH-18161GF INTERCHANGEABLE
Bearing,roller,needle
Jtekt Bearings North America Llc Div Kbna - Ord 1
5998-00-488-0720 INTERCHANGEABLE
Circuit Card Assembly
1680-00-711-09226711 INTERCHANGEABLE
Bracket,lamp Mounti
Aerospace Lighting Corporation
5995-00-823-6129553-6739-004 INTERCHANGEABLE
Cable Assembly,special Purpose,e
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
5950-00-983-2626328167-1 INTERCHANGEABLE
Transformer,audio Frequency
Raytheon Company
5342-01-035-14976711 INTERCHANGEABLE
Boot,sound Coupling
Wabtec Components Llc
5998-01-056-90816711 INTERCHANGEABLE
Circuit Card Assembly
L3 Technologies, Inc. Div Communication Systems-West
Cross-Reference Index
Part NumberManufacturer
8N2104 Caterpillar Inc Div Caterpillar Defense (USA)
4N993 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
6711 Ripley Industries Inc (USA)
Related Parts
6530-00-104-7639INTERCHANGEABLE
BAND,PERSONAL IDENTIFICATION
6711
4730-00-202-7204INTERCHANGEABLE
CLAMP,HOSE
AN746-14
5935-00-222-0819INTERCHANGEABLE
ADAPTER,LAMPHOLDER TO CONNECTOR
6711
3110-00-263-9011INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
MH-18161GF
5998-00-488-0720INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
1680-00-711-0922INTERCHANGEABLE
BRACKET,LAMP MOUNTI
6711
5995-00-823-6129INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
553-6739-004
5950-00-983-2626INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
328167-1
5342-01-035-1497INTERCHANGEABLE
BOOT,SOUND COUPLING
6711
5998-01-056-9081INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
6711
5950-01-060-1238INTERCHANGEABLE
COIL
623-1466-004
6530-01-212-7417INTERCHANGEABLE
BAND,PERSONAL IDENTIFICATION
6711

Frequently Asked Questions

What is NSN 2940-01-053-4677?

NSN 2940-01-053-4677 is a Bell Assembly, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 2940 (No Item Name Available). Status: active.

What are the part numbers for NSN 2940-01-053-4677?

NSN 2940-01-053-4677 has 3 cross-referenced part numbers: 8N2104 (Caterpillar Inc Div Caterpillar Defense), 4N993 (Caterpillar Inc Div Caterpillar Defense), 6711 (Ripley Industries Inc).

What NSN replaces 2940-01-053-4677?

There are 12 known substitutes for 2940-01-053-4677: 6530-00-104-7639, 4730-00-202-7204, 5935-00-222-0819 and 9 more. Verify interchangeability with system specifications before substitution.

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