Pipe, Exhaust2990-01-504-2637

NSN 2990-01-504-2637 · NIIN 015042637

FSC 2990 — Miscellaneous Engine Accessories, Nonaircraft · FSG 29 — Engine Accessories

Government record, cited

Also searched as 2990-01-504-2637 · 2990015042637 · NIIN 015042637 · 01-504-2637 · FSC 2990 Miscellaneous Engine Accessories, Nonaircraft · 18A1748-1 · 18A1748-1

Nearby stock numbers ← 2990-01-504-2463 Muffler, Exhaust · 2990-01-504-2812 Pipe, Exhaust →

Features

Pipe,exhaust — FSC 2990
End Item Source: 30003
Design Form: STRAIGHT
Nominal Overall Length: 53.000 INCHES IN
Criticality Code Justification: FEAT
Wall Thickness: 0.0830 INCHES NOMINAL IN
End Item Name: TOW TRACTORS REAR EXH PIPE A/S32A-31A A
Nominal Outside Diameter: 2.250 INCHES IN

Identification

NSN: 2990-01-504-2637
NIIN: 015042637
FSC: 2990 — Miscellaneous Engine Accessories, Nonaircraft
FSG: 29 — Engine Accessories

General Description

The Pipe,exhaust, cataloged under National Stock Number 2990-01-504-2637, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	2990-01-504-2637
Item Name	Pipe,exhaust
FSC / FSG	2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft
Status	ACTIVE
End Item Source	30003
Design Form	STRAIGHT
Nominal Overall Length	53.000 INCHES IN
Criticality Code Justification	FEAT
Wall Thickness	0.0830 INCHES NOMINAL IN
End Item Name	TOW TRACTORS REAR EXH PIPE A/S32A-31A A
Nominal Outside Diameter	2.250 INCHES IN
Material	ALUMINUM ALLOY
Usage Location	EXHAUST PIPE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	Y

Cross-Reference Index

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
18A1748-1	5/9 Secondary reference Maremont Corp Exhaust Systems Div
18A1748-1	3/2 Design control — primary reference U.S. Government activity

No interchangeability data on file.

Other items in FSC 2990 — Miscellaneous Engine Accessories, Nonaircraft

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

2990-00-096-8607

CONTROL ASSEMBLY,PUSH-PULL

2990-00-390-3445

CRANK,HAND,VEHICULAR

2990-00-459-7255

MUFFLER,EXHAUST

2990-00-459-7255

MUFFLER,EXHAUST

2990-00-536-2962

BLOCK,ADJUSTING SCREW

2990-00-903-8226

MUFFLER,EXHAUST

2990-01-151-5443

CONNECTOR,EXHAUST PIPE

2990-01-151-5443

CONNECTOR,EXHAUST PIPE

Frequently Asked Questions

What is NSN 2990-01-504-2637?

NSN 2990-01-504-2637 is a Pipe,exhaust, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.

What are the specifications of 2990-01-504-2637?

Key specifications for 2990-01-504-2637: End Item Source: 30003; Design Form: STRAIGHT; Nominal Overall Length: 53.000 INCHES IN; Criticality Code Justification: FEAT. 9 specifications are documented in the U.S. Government catalog.

Is NSN 2990-01-504-2637 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

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