PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

102637Muffler,exhaust

Atap Inc · NSN 2990-01-450-3860 · FSC 2990 · No Item Name Available
Verified by PartsTable
NSN 2990-01-450-3860 — this item is cataloged by the U.S. Government under National Stock Number 2990-01-450-3860. Primary manufacturer part number: 102637.
Features
  • Muffler,exhaust — FSC 2990
  • 1 verified cross-reference
  • Primary manufacturer: Atap Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Muffler,exhaust, cataloged under National Stock Number 2990-01-450-3860, is classified within Federal Supply Class 2990 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Atap Inc. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2990-01-450-3860
Primary Part Number102637
Item NameMuffler,exhaust
FSC / FSG2990 / 29 — No Item Name Available
ManufacturerAtap Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5310-00-010-2637102637 INTERCHANGEABLE
Nut,plain,hexagon
Chrysler Realty Company Llc Dba Daimler Chrysler
3020-00-087-5695102637 INTERCHANGEABLE
Gear,spur
L3harris Technologies, Inc Div Space & Airborne Systems
2590-00-934-2501102637 INTERCHANGEABLE
Plunger,locking,cra
Cadillac Gage Textron Inc.
Cross-Reference Index
Part NumberManufacturer
102637 PRIMARY Atap Inc (USA)
Related Parts
5310-00-010-2637INTERCHANGEABLE
NUT,PLAIN,HEXAGON
102637
3020-00-087-5695INTERCHANGEABLE
GEAR,SPUR
102637
2590-00-934-2501INTERCHANGEABLE
PLUNGER,LOCKING,CRA
102637

Frequently Asked Questions

What is NSN 2990-01-450-3860?

NSN 2990-01-450-3860 is a Muffler,exhaust, manufactured by Atap Inc, classified under FSC 2990 (No Item Name Available). Status: active.

What are the part numbers for NSN 2990-01-450-3860?

NSN 2990-01-450-3860 has 1 cross-referenced part number: 102637 (Atap Inc).

What NSN replaces 2990-01-450-3860?

There are 3 known substitutes for 2990-01-450-3860: 5310-00-010-2637, 3020-00-087-5695, 2590-00-934-2501. Verify interchangeability with system specifications before substitution.

What are the specifications of 102637?

Key specifications for 102637: End Item Identification: FIRETRUCK,AMERTEK,MODEL 2500L,SERIES 1987. 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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