PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

42525Pipe,exhaust

Walker Mfg Co · NSN 2990-01-171-5090 · FSC 2990 · No Item Name Available
Verified by PartsTable
NSN 2990-01-171-5090 — this item is cataloged by the U.S. Government under National Stock Number 2990-01-171-5090. Primary manufacturer part number: 42525.
Features
  • Pipe,exhaust — FSC 2990
  • 4 verified cross-references
  • Primary manufacturer: Walker Mfg Co
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
General Description

The Pipe,exhaust, cataloged under National Stock Number 2990-01-171-5090, 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 4 commercial cross-references from 4 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
NSN2990-01-171-5090
Primary Part Number42525
Item NamePipe,exhaust
FSC / FSG2990 / 29 — No Item Name Available
ManufacturerWalker Mfg Co
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-100-6149 INTERCHANGEABLE
Ball,bearing
5133-00-189-9260 INTERCHANGEABLE
Drill,twist
3455-00-239-5608D-760/CUTTER8 PITCH28 INTERCHANGEABLE
Cutter,milling,involute Gear
Doall Baltimore Company
7530-00-262-736442-525-0 INTERCHANGEABLE
Label
Avery Dennison Corporation Dba Avery Dennison, Fastener Division Div Avery Dennison - Fastener Division
1670-00-307-638818015 INTERCHANGEABLE
Release,parachute
Northrop Grumman Systems Corporation Dba Aerospace Systems Div Aeronautics Systems
5930-00-572-4520355-002-110 INTERCHANGEABLE
Switch,rotary
L3harris Interstate Electronics Corporation
5330-00-762-735918015 INTERCHANGEABLE
Packing
Hein Werner Corp
1680-00-787-113818015 INTERCHANGEABLE
Microadjust Assembl
Triumph Controls, Llc Dba Triumph Controls, Llc
1430-00-993-991918015 INTERCHANGEABLE
Stop
Gyrus Acmi L.p. Dba Circon-Acmi Div
4140-01-009-51664262-5 INTERCHANGEABLE
Impeller,fan,centrifugal
Dynamic Air Engineering, Inc.
Cross-Reference Index
Part NumberManufacturer
42525 Walker Mfg Co (USA)
18015 Ap Parts Co Industrial Sales Div (USA)
4117438 Chrysler Realty Company Llc Dba Daimler Chrysler (USA)
18015 Goerlichs (USA)
Related Parts
3110-00-100-6149INTERCHANGEABLE
BALL,BEARING
5133-00-189-9260INTERCHANGEABLE
DRILL,TWIST
3455-00-239-5608INTERCHANGEABLE
CUTTER,MILLING,INVOLUTE GEAR
D-760/CUTTER8 PITCH28
7530-00-262-7364INTERCHANGEABLE
LABEL
42-525-0
1670-00-307-6388INTERCHANGEABLE
RELEASE,PARACHUTE
18015
5930-00-572-4520INTERCHANGEABLE
SWITCH,ROTARY
355-002-110
5330-00-762-7359INTERCHANGEABLE
PACKING
18015
1680-00-787-1138INTERCHANGEABLE
MICROADJUST ASSEMBL
18015
1430-00-993-9919INTERCHANGEABLE
STOP
18015
4140-01-009-5166INTERCHANGEABLE
IMPELLER,FAN,CENTRIFUGAL
4262-5
5950-01-067-7394INTERCHANGEABLE
TRANSFORMER,POWER
662-0636-010
5360-01-155-9459INTERCHANGEABLE
SPRING
18015

Frequently Asked Questions

What is NSN 2990-01-171-5090?

NSN 2990-01-171-5090 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 2990-01-171-5090?

NSN 2990-01-171-5090 has 4 cross-referenced part numbers: 42525 (Walker Mfg Co), 18015 (Ap Parts Co Industrial Sales Div), 4117438 (Chrysler Realty Company Llc Dba Daimler Chrysler), 18015 (Goerlichs).

What NSN replaces 2990-01-171-5090?

There are 12 known substitutes for 2990-01-171-5090: 3110-00-100-6149, 5133-00-189-9260, 3455-00-239-5608 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 42525?

Key specifications for 42525: Special Features: STEEL;INLET,2.500 IN. ID;OUTLET,2.500 IN. OD;11.000 IN. O/A LG IN. 1 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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