PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

41378Pipe,exhaust

Walker Mfg Co · NSN 2990-01-351-8260 · FSC 2990 · No Item Name Available
Verified by PartsTable
NSN 2990-01-351-8260 — this item is cataloged by the U.S. Government under National Stock Number 2990-01-351-8260. Primary manufacturer part number: 41378.
Features
  • Pipe,exhaust — FSC 2990
  • Usage Location: EXHAUST PIPE
  • Surface Treatment: CHROMATE
  • Reduced End Outside Diameter: 4.000 INCHES NOMINAL IN
  • Design Form: PREBENT
  • End Item Name: TRUCK,PANEL
  • End Item Model Number: O.D.-I.D. 4IN.-90 DEGREE IN
  • Nominal Overall Length: 10.000 INCHES IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
General Description

The Pipe,exhaust, cataloged under National Stock Number 2990-01-351-8260, 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 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, 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
NSN2990-01-351-8260
Primary Part Number41378
Item NamePipe,exhaust
FSC / FSG2990 / 29 — No Item Name Available
ManufacturerWalker Mfg Co
StatusACTIVE
Usage LocationEXHAUST PIPE
Surface TreatmentCHROMATE
Reduced End Outside Diameter4.000 INCHES NOMINAL IN
Design FormPREBENT
End Item NameTRUCK,PANEL
End Item Model NumberO.D.-I.D. 4IN.-90 DEGREE IN
Nominal Overall Length10.000 INCHES IN
End Item Source62080
Enlarged End Inside Diameter4.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5950-00-007-3815986092-1 INTERCHANGEABLE
Reactor
Raytheon Company Dba Raytheon
3040-00-104-48381771037 INTERCHANGEABLE
Clamp,hub
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5850-00-174-285841251 INTERCHANGEABLE
Filter,signal Light
Hanovia Specialty Lighting Llc
5950-00-230-019941-378 INTERCHANGEABLE
Transformer,radio Frequency
Aladdin Industries Inc
1680-00-347-0425 INTERCHANGEABLE
Screwjack Assy,actu
6340-00-605-4108 INTERCHANGEABLE
Mounting Bracket
3930-00-776-992809-41251 INTERCHANGEABLE
Ring,lock
Tvh Parts Co.
5950-01-008-5500866365-1 INTERCHANGEABLE
Reactor
Raytheon Company Dba Raytheon
4920-01-014-303341251 INTERCHANGEABLE
Lens Cell Assembly
Recon/optical, Inc. Dba Pacific Optical
2910-01-105-5654 INTERCHANGEABLE
Pump,fuel
Cross-Reference Index
Part NumberManufacturer
41378 PRIMARY Walker Mfg Co (USA)
41251 Walker Mfg Co (USA)
Related Parts
5950-00-007-3815INTERCHANGEABLE
REACTOR
986092-1
3040-00-104-4838INTERCHANGEABLE
CLAMP,HUB
1771037
5850-00-174-2858INTERCHANGEABLE
FILTER,SIGNAL LIGHT
41251
5950-00-230-0199INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
41-378
1680-00-347-0425INTERCHANGEABLE
SCREWJACK ASSY,ACTU
6340-00-605-4108INTERCHANGEABLE
MOUNTING BRACKET
3930-00-776-9928INTERCHANGEABLE
RING,LOCK
09-41251
5950-01-008-5500INTERCHANGEABLE
REACTOR
866365-1
4920-01-014-3033INTERCHANGEABLE
LENS CELL ASSEMBLY
41251
2910-01-105-5654INTERCHANGEABLE
PUMP,FUEL
5962-01-175-4407INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
41378
5330-01-355-6852INTERCHANGEABLE
PARTS KIT,SEAL REPLACEMENT,MECHA
41251

Frequently Asked Questions

What is NSN 2990-01-351-8260?

NSN 2990-01-351-8260 is a Pipe,exhaust, manufactured by Walker Mfg Co, classified under FSC 2990 (No Item Name Available). Status: active.

What are the part numbers for NSN 2990-01-351-8260?

NSN 2990-01-351-8260 has 2 cross-referenced part numbers: 41378 (Walker Mfg Co), 41251 (Walker Mfg Co).

What NSN replaces 2990-01-351-8260?

There are 12 known substitutes for 2990-01-351-8260: 5950-00-007-3815, 3040-00-104-4838, 5850-00-174-2858 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 41378?

Key specifications for 41378: Usage Location: EXHAUST PIPE; Surface Treatment: CHROMATE; Reduced End Outside Diameter: 4.000 INCHES NOMINAL IN; Design Form: PREBENT. 10 total characteristics are documented in the Federal Logistics Information System.

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