PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

764Muffler,exhaust

Walker Mfg Co · NSN 2990-00-776-5027 · FSC 2990 · No Item Name Available
Verified by PartsTable
NSN 2990-00-776-5027 — this item is cataloged by the U.S. Government under National Stock Number 2990-00-776-5027. Primary manufacturer part number: 764.
Features
  • Muffler,exhaust — FSC 2990
  • Body Shape: OVAL
  • Operating Position: HORIZONTAL
  • Muffler Design: MULTIPASS
  • Design Type: DRY
  • Inlet Connection Type: UNTHREADED SINGLE INLET
  • Tube Quantity: 3
  • Coolant Type: AIR
Applications
  • Applications requiring Steel Comp 1010 Location Not Otherwise Specified construction
General Description

The Muffler,exhaust, cataloged under National Stock Number 2990-00-776-5027, 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. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2990-00-776-5027
Primary Part Number764
Item NameMuffler,exhaust
FSC / FSG2990 / 29 — No Item Name Available
ManufacturerWalker Mfg Co
StatusACTIVE
Body ShapeOVAL
Operating PositionHORIZONTAL
Muffler DesignMULTIPASS
Design TypeDRY
Inlet Connection TypeUNTHREADED SINGLE INLET
Tube Quantity3
Coolant TypeAIR
Material Document and ClassificationSAE 1010 ASSN STD SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED
Nonconnection Outlet LocationON MINOR AXIS
Outlet Connection TypeUNTHREADED FIRST OUTLET
Inlet LocationLOCATED 2-5/8 IN. C TO C FROM HORIZONTAL CENTER LINE IN
Nonconnection Outlet Type and Quantity2 SLOTTED
FSC Application DataENGINE,GASOLINE,NON-AIRCRAFT
Outlet Outside Diameter2.090 INCHES NOMINAL FIRST OUTLET IN
Nonconnection Outlet Size3/4 IN. LG BY 1/8 IN. W IN
MaterialSTEEL COMP 1010 LOCATION NOT OTHERWISE SPECIFIED
Outlet LocationCENTRALLY LOCATED IN END SECTION OF BODY
Inlet Outside Diameter2.090 INCHES NOMINAL SINGLE INLET IN
Surface TreatmentZINC
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6685-00-001-7964 INTERCHANGEABLE
Control,amplifier Relay
5342-00-036-71901-574 INTERCHANGEABLE
Bracket,clamping
Hutchinson Aerospace & Industry, Inc. Dba Barry Wright Corp
4820-00-071-79331869 INTERCHANGEABLE
Piston,valve
Lawler Manufacturing Company, Inc.
3110-00-100-353221075 INTERCHANGEABLE
Cone and Rollers,tapered Roller
The Timken Corporation
3110-00-100-359542375 INTERCHANGEABLE
Cone and Rollers,tapered Roller
Federal-Mogul Corp Government Sales Dept
5815-00-125-48727409 INTERCHANGEABLE
Lever
Telemechanics Inc
6760-00-138-0707 INTERCHANGEABLE
Filter,light,photographic Lens
3110-00-155-6729409MF INTERCHANGEABLE
Bearing,ball,annular
Skf Usa Inc.
3110-00-156-8066177003-68 INTERCHANGEABLE
Bearing,ball,annular
Naval Sea Systems Command
5930-00-228-69877409 INTERCHANGEABLE
Switch,toggle
C & K Components, Llc Div C & K Components
Cross-Reference Index
Part NumberManufacturer
764 Walker Mfg Co (USA)
M741 Goerlichs (USA)
1869 Arvin Industries Inc (USA)
21075 Walker Mfg Co (USA)
7409 Harvard Industries (USA)
510 Ap Parts Co Industrial Sales Div (USA)
741 Merit Industries Inc (USA)
ST46 Maremont Corp (USA)
Related Parts
6685-00-001-7964INTERCHANGEABLE
CONTROL,AMPLIFIER RELAY
5342-00-036-7190INTERCHANGEABLE
BRACKET,CLAMPING
1-574
4820-00-071-7933INTERCHANGEABLE
PISTON,VALVE
1869
3110-00-100-3532INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
21075
3110-00-100-3595INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
42375
5815-00-125-4872INTERCHANGEABLE
LEVER
7409
6760-00-138-0707INTERCHANGEABLE
FILTER,LIGHT,PHOTOGRAPHIC LENS
3110-00-155-6729INTERCHANGEABLE
BEARING,BALL,ANNULAR
409MF
3110-00-156-8066INTERCHANGEABLE
BEARING,BALL,ANNULAR
177003-68
5930-00-228-6987INTERCHANGEABLE
SWITCH,TOGGLE
7409
5935-00-258-6267INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
7409C
5360-00-297-3604INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION

Frequently Asked Questions

What is NSN 2990-00-776-5027?

NSN 2990-00-776-5027 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 2990-00-776-5027?

NSN 2990-00-776-5027 has 8 cross-referenced part numbers: 764 (Walker Mfg Co), M741 (Goerlichs), 1869 (Arvin Industries Inc), 21075 (Walker Mfg Co), 7409 (Harvard Industries) and 3 more.

What NSN replaces 2990-00-776-5027?

There are 12 known substitutes for 2990-00-776-5027: 6685-00-001-7964, 5342-00-036-7190, 4820-00-071-7933 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 764?

Key specifications for 764: Body Shape: OVAL; Operating Position: HORIZONTAL; Muffler Design: MULTIPASS; Design Type: DRY. 22 total characteristics are documented in the Federal Logistics Information System.

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