PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

49-340Valve,plug

Bfgoodrich-Messier Inc · NSN 4820-01-664-8321 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-664-8321 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-664-8321. Primary manufacturer part number: 49-340.
Features
  • Valve,plug — FSC 4820
  • 1 verified cross-reference
  • Primary manufacturer: Bfgoodrich-Messier Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,plug, cataloged under National Stock Number 4820-01-664-8321, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Bfgoodrich-Messier 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
NSN4820-01-664-8321
Primary Part Number49-340
Item NameValve,plug
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerBfgoodrich-Messier Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
2530-00-422-928652707-01 INTERCHANGEABLE
Brake Drum
Tuthill Corporation Dba Reyco/granning Div Reyco Granning
5330-00-599-515221158-1200 INTERCHANGEABLE
Seal,plain Encased
Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc
4520-01-256-356949340 INTERCHANGEABLE
Heating Element,electrical,nonim
Indeeco Llc Dba Indeeco
Cross-Reference Index
Part NumberManufacturer
49-340 PRIMARY Bfgoodrich-Messier Inc (USA)
Related Parts
2530-00-422-9286INTERCHANGEABLE
BRAKE DRUM
52707-01
5330-00-599-5152INTERCHANGEABLE
SEAL,PLAIN ENCASED
21158-1200
4520-01-256-3569INTERCHANGEABLE
HEATING ELEMENT,ELECTRICAL,NONIM
49340

Frequently Asked Questions

What is NSN 4820-01-664-8321?

NSN 4820-01-664-8321 is a Valve,plug, manufactured by Bfgoodrich-Messier Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-664-8321?

NSN 4820-01-664-8321 has 1 cross-referenced part number: 49-340 (Bfgoodrich-Messier Inc).

What NSN replaces 4820-01-664-8321?

There are 3 known substitutes for 4820-01-664-8321: 2530-00-422-9286, 5330-00-599-5152, 4520-01-256-3569. Verify interchangeability with system specifications before substitution.

What are the specifications of 49-340?

Key specifications for 49-340: Part Name Assigned by Controlling Agency: PLUG OVERINFLATION; End Item Identification: MRTT. 2 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com