PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FB0023Cap Assembly,protective,muffler-

Mercury Products Corp · NSN 2990-01-023-5811 · FSC 2990 · No Item Name Available
Verified by PartsTable
NSN 2990-01-023-5811 — this item is cataloged by the U.S. Government under National Stock Number 2990-01-023-5811. Primary manufacturer part number: FB0023.
Features
  • Cap Assembly,protective,muffler- — FSC 2990
  • Material: STEEL
  • Pipe Outside Diameter Accommodated: 3.000 INCHES IN
  • 3 verified cross-references
  • Primary manufacturer: Mercury Products Corp
Applications
  • Applications requiring Steel construction
General Description

The Cap Assembly,protective,muffler-, cataloged under National Stock Number 2990-01-023-5811, is classified within Federal Supply Class 2990 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Mercury Products Corp. Government technical data includes 2 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2990-01-023-5811
Primary Part NumberFB0023
Item NameCap Assembly,protective,muffler-
FSC / FSG2990 / 29 — No Item Name Available
ManufacturerMercury Products Corp
StatusACTIVE
MaterialSTEEL
Pipe Outside Diameter Accommodated3.000 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5950-00-436-6256 INTERCHANGEABLE
Transformer,power
5330-00-759-118343524 INTERCHANGEABLE
Gasket
Ashcroft Inc Dba Heise
5930-01-036-957043524 INTERCHANGEABLE
Switch,flow
Setra Systems, Inc. Dba Gems Sensors
5950-01-095-08184012330 INTERCHANGEABLE
Transformer,power
Honeywell International Inc. Dba Honeywell International
Cross-Reference Index
Part NumberManufacturer
43524 Davey Compressor Co Div of Keco Industries Inc (USA)
FB0023 PRIMARY Mercury Products Corp (USA)
43524 Jenny Products, Inc (USA)
Related Parts
5950-00-436-6256INTERCHANGEABLE
TRANSFORMER,POWER
5330-00-759-1183INTERCHANGEABLE
GASKET
43524
5930-01-036-9570INTERCHANGEABLE
SWITCH,FLOW
43524
5950-01-095-0818INTERCHANGEABLE
TRANSFORMER,POWER
4012330

Frequently Asked Questions

What is NSN 2990-01-023-5811?

NSN 2990-01-023-5811 is a Cap Assembly,protective,muffler-, manufactured by Mercury Products Corp, classified under FSC 2990 (No Item Name Available). Status: active.

What are the part numbers for NSN 2990-01-023-5811?

NSN 2990-01-023-5811 has 3 cross-referenced part numbers: 43524 (Davey Compressor Co Div of Keco Industries Inc), FB0023 (Mercury Products Corp), 43524 (Jenny Products, Inc).

What NSN replaces 2990-01-023-5811?

There are 4 known substitutes for 2990-01-023-5811: 5950-00-436-6256, 5330-00-759-1183, 5930-01-036-9570 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of FB0023?

Key specifications for FB0023: Material: STEEL; Pipe Outside Diameter Accommodated: 3.000 INCHES IN. 2 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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