Stack Assembly, Exhaust2990-00-689-3111

NSN 2990-00-689-3111 · NIIN 006893111

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

Government record, cited

Also searched as 2990-00-689-3111 · 2990006893111 · NIIN 006893111 · 00-689-3111 · FSC 2990 Miscellaneous Engine Accessories, Nonaircraft

Nearby stock numbers ← 2990-00-689-3110 Governor, Diesel Engine · 2990-00-689-3206 →

Features

Stack Assembly,exhaust — FSC 2990
General Characteristics Item Description: ONE TUBE 4.500 IN. OD,0.120 IN. WALL THK,2.000 IN. LG,OTHER 4.250 IN. OD,0.083 IN. WALL THK,26.250 IN. LG,CORROSION RESISTING STEEL,MIL-T-8606 TYPE 1 COMP 347,SHEET,STEEL,MIL-S-6721 COMP CB-TA,0.190 IN. THK,WITH RAIN CAP IN

Identification

NSN: 2990-00-689-3111
NIIN: 006893111
FSC: 2990 — Miscellaneous Engine Accessories, Nonaircraft
FSG: 29 — Engine Accessories

General Description

The Stack Assembly,exhaust, cataloged under National Stock Number 2990-00-689-3111, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	2990-00-689-3111
Item Name	Stack Assembly,exhaust
FSC / FSG	2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft
Status	ACTIVE
General Characteristics Item Description	ONE TUBE 4.500 IN. OD,0.120 IN. WALL THK,2.000 IN. LG,OTHER 4.250 IN. OD,0.083 IN. WALL THK,26.250 IN. LG,CORROSION RESISTING STEEL,MIL-T-8606 TYPE 1 COMP 347,SHEET,STEEL,MIL-S-6721 COMP CB-TA,0.190 IN. THK,WITH RAIN CAP IN

Lifecycle & Compliance

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

Cross-Reference Index

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

Reference documents

Reference	Meaning
XV12-003-700	3/9 Design control — primary reference Project Manager Amphibious Lighters St Louis Mo

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.

2990-00-001-0001

BLOWER ASSEMBLY

2990-00-001-1248

2990-00-001-1248 · Item name not on file

2990-00-001-1250

2990-00-001-1250 · Item name not on file

2990-00-001-2055

2990-00-001-2055 · Item name not on file

2990-00-001-3498

2990-00-001-3498 · Item name not on file

2990-00-001-3520

2990-00-001-3520 · Item name not on file

2990-00-001-3521

2990-00-001-3521 · Item name not on file

2990-00-001-3522

CAP ASSEMBLY,MUFFLE

Frequently Asked Questions

What is NSN 2990-00-689-3111?

NSN 2990-00-689-3111 is a Stack Assembly,exhaust, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.

What are the specifications of 2990-00-689-3111?

Key specifications for 2990-00-689-3111: General Characteristics Item Description: ONE TUBE 4.500 IN. OD,0.120 IN. WALL THK,2.000 IN. LG,OTHER 4.250 IN. OD,0.083 IN. WALL THK,26.250 IN. LG,CORROSION RESISTING STEEL,MIL-T-8606 TYPE 1 COMP 347,SHEET,STEEL,MIL-S-6721 COMP CB-TA,0.190 IN. THK,WITH RAIN CAP IN; End Item Identification: 19307105729. 1 specification is documented in the U.S. Government catalog.

Is NSN 2990-00-689-3111 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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