PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

69042Muffler,exhaust

Drs Environmental Systems Inc · NSN 2990-01-097-6802 · FSC 2990 · No Item Name Available
Verified by PartsTable
NSN 2990-01-097-6802 — this item is cataloged by the U.S. Government under National Stock Number 2990-01-097-6802. Primary manufacturer part number: 69042.
Features
  • Muffler,exhaust — FSC 2990
  • Operating Position: HORIZONTAL
  • Inlet Projection Length: 3.000 INCHES NOMINAL SINGLE INLET IN
  • Material: STEEL LOCATION NOT OTHERWISE SPECIFIED
  • Inlet Inside Diameter: 3.500 INCHES NOMINAL SINGLE INLET IN
  • Inlet Location: ECCENTRIC LOCATED IN END OF BODY
  • Coolant Type: AIR
  • Body Shape: OVAL
Applications
  • Applications requiring Steel Location Not Otherwise Specified construction
General Description

The Muffler,exhaust, cataloged under National Stock Number 2990-01-097-6802, is classified within Federal Supply Class 2990 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Drs Environmental Systems Inc. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2990-01-097-6802
Primary Part Number69042
Item NameMuffler,exhaust
FSC / FSG2990 / 29 — No Item Name Available
ManufacturerDrs Environmental Systems Inc
StatusACTIVE
Operating PositionHORIZONTAL
Inlet Projection Length3.000 INCHES NOMINAL SINGLE INLET IN
MaterialSTEEL LOCATION NOT OTHERWISE SPECIFIED
Inlet Inside Diameter3.500 INCHES NOMINAL SINGLE INLET IN
Inlet LocationECCENTRIC LOCATED IN END OF BODY
Coolant TypeAIR
Body ShapeOVAL
Design TypeDRY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
2590-00-087-588811608 INTERCHANGEABLE
Poppet Shifter Shaf
Paccar Winch Inc Dba Paccar Winch Division
4720-00-175-978969042 INTERCHANGEABLE
Hose,preformed
Dressta North America Ltd
6515-00-955-883669042 INTERCHANGEABLE
Blade,laryngoscope
Welch Allyn, Inc.
2910-01-048-970069042 INTERCHANGEABLE
Rod,choke
Mcculloch Corp
5342-01-167-016269042 INTERCHANGEABLE
Clamp
Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.
5999-01-692-89838734509-005 INTERCHANGEABLE
Contact,electrical
Raytheon Company
Cross-Reference Index
Part NumberManufacturer
69042 Drs Environmental Systems Inc (USA)
69042 Davey Compressor Co Div of Keco Industries Inc (USA)
69042 Hdt Expeditionary Systems Inc (USA)
Related Parts
2590-00-087-5888INTERCHANGEABLE
POPPET SHIFTER SHAF
11608
4720-00-175-9789INTERCHANGEABLE
HOSE,PREFORMED
69042
6515-00-955-8836INTERCHANGEABLE
BLADE,LARYNGOSCOPE
69042
2910-01-048-9700INTERCHANGEABLE
ROD,CHOKE
69042
5342-01-167-0162INTERCHANGEABLE
CLAMP
69042
5999-01-692-8983INTERCHANGEABLE
CONTACT,ELECTRICAL
8734509-005

Frequently Asked Questions

What is NSN 2990-01-097-6802?

NSN 2990-01-097-6802 is a Muffler,exhaust, manufactured by Drs Environmental Systems Inc, classified under FSC 2990 (No Item Name Available). Status: active.

What are the part numbers for NSN 2990-01-097-6802?

NSN 2990-01-097-6802 has 3 cross-referenced part numbers: 69042 (Drs Environmental Systems Inc), 69042 (Davey Compressor Co Div of Keco Industries Inc), 69042 (Hdt Expeditionary Systems Inc).

What NSN replaces 2990-01-097-6802?

There are 6 known substitutes for 2990-01-097-6802: 2590-00-087-5888, 4720-00-175-9789, 6515-00-955-8836 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 69042?

Key specifications for 69042: Operating Position: HORIZONTAL; Overall Length: 38.000 INCHES NOMINAL IN; Inlet Projection Length: 3.000 INCHES NOMINAL SINGLE INLET IN; Material: STEEL LOCATION NOT OTHERWISE SPECIFIED. 9 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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