PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7S1784Cap Assembly,protective,muffler-

Caterpillar Inc Div Caterpillar Defense · NSN 2990-00-124-5890 · FSC 2990 · No Item Name Available
Verified by PartsTable
NSN 2990-00-124-5890 — this item is cataloged by the U.S. Government under National Stock Number 2990-00-124-5890. Primary manufacturer part number: 7S1784.
Features
  • Cap Assembly,protective,muffler- — FSC 2990
  • 4 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 Cap Assembly,protective,muffler-, cataloged under National Stock Number 2990-00-124-5890, is classified within Federal Supply Class 2990 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Caterpillar Inc Div Caterpillar Defense. This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN2990-00-124-5890
Primary Part Number7S1784
Item NameCap Assembly,protective,muffler-
FSC / FSG2990 / 29 — No Item Name Available
ManufacturerCaterpillar Inc Div Caterpillar Defense
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
5330-00-821-250658-41-0-63 INTERCHANGEABLE
Gasket
Southco Inc
5950-00-824-019911080 INTERCHANGEABLE
Transformer,power
Oeco, Llc Dba Pacific Scientific Oeco Div Fire Safety and Power Systems
5905-00-937-4855 INTERCHANGEABLE
Resistor,variable,wire Wound,pre
5950-01-054-350611080 INTERCHANGEABLE
Transformer,power
Standex Electronics, Inc.
4730-01-213-846611080 INTERCHANGEABLE
Elbow,pipe to Tube
Barnes Group Inc. Dba Barnes Distribution
6515-01-353-501011080 INTERCHANGEABLE
Catheter,arterial Embolectomy
Advanced Cardiovascular Systems Inc
5310-01-418-592911080 INTERCHANGEABLE
Washer,flat
Parker-Hannifin Corporation Dba Racor Division Div Racor Division
5120-01-701-303511080 INTERCHANGEABLE
Bit,screwdriver
Bondhus Corp
Cross-Reference Index
Part NumberManufacturer
1S3628 Caterpillar Inc Div Caterpillar Defense (USA)
7S1784 Caterpillar Tractor Co Ltd (GBR)
11080 Gleason Corp (USA)
7S1784 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
Related Parts
5330-00-821-2506INTERCHANGEABLE
GASKET
58-41-0-63
5950-00-824-0199INTERCHANGEABLE
TRANSFORMER,POWER
11080
5905-00-937-4855INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,PRE
5950-01-054-3506INTERCHANGEABLE
TRANSFORMER,POWER
11080
4730-01-213-8466INTERCHANGEABLE
ELBOW,PIPE TO TUBE
11080
6515-01-353-5010INTERCHANGEABLE
CATHETER,ARTERIAL EMBOLECTOMY
11080
5310-01-418-5929INTERCHANGEABLE
WASHER,FLAT
11080
5120-01-701-3035INTERCHANGEABLE
BIT,SCREWDRIVER
11080

Frequently Asked Questions

What is NSN 2990-00-124-5890?

NSN 2990-00-124-5890 is a Cap Assembly,protective,muffler-, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 2990 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 2990-00-124-5890?

NSN 2990-00-124-5890 has 4 cross-referenced part numbers: 1S3628 (Caterpillar Inc Div Caterpillar Defense), 7S1784 (Caterpillar Tractor Co Ltd), 11080 (Gleason Corp), 7S1784 (Caterpillar Inc Div Caterpillar Defense).

What NSN replaces 2990-00-124-5890?

There are 8 known substitutes for 2990-00-124-5890: 5330-00-821-2506, 5950-00-824-0199, 5905-00-937-4855 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 7S1784?

Key specifications for 7S1784: Special Features: SIZE 14. 1 total characteristics are documented in the Federal Logistics Information System.

Is NSN 2990-00-124-5890 still in active supply?

NSN 2990-00-124-5890 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com