PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

500993Muffler,exhaust

Tymco, Inc · NSN 2990-01-268-5395 · FSC 2990 · No Item Name Available
Verified by PartsTable
NSN 2990-01-268-5395 — this item is cataloged by the U.S. Government under National Stock Number 2990-01-268-5395. Primary manufacturer part number: 500993.
Features
  • Muffler,exhaust — FSC 2990
  • Body Shape: OVAL
  • Coolant Type: AIR
  • Muffler Design: BAFFLE
  • Material: STEEL LOCATION NOT OTHERWISE SPECIFIED
  • Tube Quantity: 2
  • Baffle Quantity: 2
  • Design Type: DRY
Applications
  • Applications requiring Steel Location Not Otherwise Specified construction
General Description

The Muffler,exhaust, cataloged under National Stock Number 2990-01-268-5395, is classified within Federal Supply Class 2990 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Tymco, Inc. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 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
NSN2990-01-268-5395
Primary Part Number500993
Item NameMuffler,exhaust
FSC / FSG2990 / 29 — No Item Name Available
ManufacturerTymco, Inc
StatusACTIVE
Body ShapeOVAL
Coolant TypeAIR
Muffler DesignBAFFLE
MaterialSTEEL LOCATION NOT OTHERWISE SPECIFIED
Tube Quantity2
Baffle Quantity2
Design TypeDRY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5325-01-076-7559500993 INTERCHANGEABLE
Ring,retaining
Huck International, Inc. Div Kingston Operations
6680-01-244-0770 INTERCHANGEABLE
Sensor,salinity
5905-01-549-4094FN-2-10399 INTERCHANGEABLE
Resistor,thermal
Marine Electric Systems Inc
5905-01-549-4098FN-2-10400 INTERCHANGEABLE
Resistor,thermal
Marine Electric Systems Inc
5905-01-549-4100FN-2-10398 INTERCHANGEABLE
Resistor,thermal
Marine Electric Systems Inc
5330-01-550-2903FN-10055 INTERCHANGEABLE
Packing,preformed
Marine Electric Systems Inc
Cross-Reference Index
Part NumberManufacturer
500993 PRIMARY Tymco, Inc (USA)
500993 Tymco International, Inc. (USA)
Related Parts
5325-01-076-7559INTERCHANGEABLE
RING,RETAINING
500993
6680-01-244-0770INTERCHANGEABLE
SENSOR,SALINITY
5905-01-549-4094INTERCHANGEABLE
RESISTOR,THERMAL
FN-2-10399
5905-01-549-4098INTERCHANGEABLE
RESISTOR,THERMAL
FN-2-10400
5905-01-549-4100INTERCHANGEABLE
RESISTOR,THERMAL
FN-2-10398
5330-01-550-2903INTERCHANGEABLE
PACKING,PREFORMED
FN-10055

Frequently Asked Questions

What is NSN 2990-01-268-5395?

NSN 2990-01-268-5395 is a Muffler,exhaust, manufactured by Tymco, Inc, classified under FSC 2990 (No Item Name Available). Status: active.

What are the part numbers for NSN 2990-01-268-5395?

NSN 2990-01-268-5395 has 2 cross-referenced part numbers: 500993 (Tymco, Inc), 500993 (Tymco International, Inc.).

What NSN replaces 2990-01-268-5395?

There are 6 known substitutes for 2990-01-268-5395: 5325-01-076-7559, 6680-01-244-0770, 5905-01-549-4094 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 500993?

Key specifications for 500993: End Item Identification: TYMCO INC MODEL 600 SWEEPER; Body Shape: OVAL; Overall Height: 5.000 INCHES NOMINAL IN; Coolant Type: AIR. 11 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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