PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

640Muffler,exhaust

Walker Mfg Co · NSN 2990-00-891-6775 · FSC 2990 · No Item Name Available
Verified by PartsTable
NSN 2990-00-891-6775 — this item is cataloged by the U.S. Government under National Stock Number 2990-00-891-6775. Primary manufacturer part number: 640.
Features
  • Muffler,exhaust — FSC 2990
  • 6 verified cross-references
  • Primary manufacturer: Walker Mfg Co
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Muffler,exhaust, cataloged under National Stock Number 2990-00-891-6775, is classified within Federal Supply Class 2990 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Walker Mfg Co. This item has 6 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameMuffler,exhaust
FSC / FSG2990 — No Item Name Available (FSG 29)
ManufacturersTeck Exhaust Systems Inc (CAGE 12159); Walker Mfg Co (CAGE 79260); General Motors Corp Chevrolet Motor Div Special Products Dept (CAGE 11862); General Motors Llc Dba General Motors Llc (CAGE 7X677); Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02 (CAGE 23862)
Technical Specifications
ParameterValue
NSN2990-00-891-6775
Primary Part Number640
Item NameMuffler,exhaust
FSC / FSG2990 / 29 — No Item Name Available
ManufacturerWalker Mfg Co
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5960-00-272-92081000J25 INTERCHANGEABLE
Retainer,electron Tube
Raytheon Company Dba Raytheon Co
3120-00-294-208914348A INTERCHANGEABLE
Bearing,washer,thrust
Brinkley Technology Group Llc Dba Hercules Manufacturing
5310-00-484-70468596 INTERCHANGEABLE
Nut,plain,hexagon
Triumph Engine Control Systems Llc
5960-00-840-2422 INTERCHANGEABLE
Electron Tube
5945-01-536-93138596 INTERCHANGEABLE
Relay Assembly Group
Parasense, Inc
Cross-Reference Index
Part NumberManufacturer
8596 Teck Exhaust Systems Inc (USA)
640 PRIMARY Walker Mfg Co (USA)
3693710 General Motors Corp Chevrolet Motor Div Special Products Dept (USA)
2453809 General Motors Llc Dba General Motors Llc (USA)
2453809 Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02 (USA)
3693710 General Motors Llc Dba General Motors Llc (USA)
Related Parts
5960-00-272-9208INTERCHANGEABLE
RETAINER,ELECTRON TUBE
1000J25
3120-00-294-2089INTERCHANGEABLE
BEARING,WASHER,THRUST
14348A
5310-00-484-7046INTERCHANGEABLE
NUT,PLAIN,HEXAGON
8596
5960-00-840-2422INTERCHANGEABLE
ELECTRON TUBE
5945-01-536-9313INTERCHANGEABLE
RELAY ASSEMBLY GROUP
8596

Frequently Asked Questions

What is NSN 2990-00-891-6775?

NSN 2990-00-891-6775 is a Muffler,exhaust, manufactured by Walker Mfg Co, classified under FSC 2990 (No Item Name Available). Status: active.

What are the part numbers for NSN 2990-00-891-6775?

NSN 2990-00-891-6775 has 6 cross-referenced part numbers: 8596 (Teck Exhaust Systems Inc), 640 (Walker Mfg Co), 3693710 (General Motors Corp Chevrolet Motor Div Special Products Dept), 2453809 (General Motors Llc Dba General Motors Llc), 2453809 (Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02) and 1 more.

What NSN replaces 2990-00-891-6775?

There are 5 known substitutes for 2990-00-891-6775: 5960-00-272-9208, 3120-00-294-2089, 5310-00-484-7046 and 2 more. Verify interchangeability with system specifications before substitution.

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