PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

349-04-01Valve,check

Oshkosh Corp · NSN 4820-00-557-7333 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-557-7333 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-557-7333. Primary manufacturer part number: 349-04-01.
Features
  • Valve,check — FSC 4820
  • Style Designator: STRAIGHT THRU
  • Material: COPPER ALLOY BODY
  • Valve Operation Method: AUTOMATIC
  • Nominal Thread Size: 0.375 INCHES ALL ENDS IN
  • Flow Control Device: DISK
  • Thread Series Designator: NPT ALL ENDS
  • Connection Type: THREADED INTERNAL PIPE ALL ENDS
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy Body construction
General Description

The Valve,check, cataloged under National Stock Number 4820-00-557-7333, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Oshkosh Corp. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-557-7333
Primary Part Number349-04-01
Item NameValve,check
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerOshkosh Corp
StatusACTIVE
Style DesignatorSTRAIGHT THRU
MaterialCOPPER ALLOY BODY
Valve Operation MethodAUTOMATIC
Nominal Thread Size0.375 INCHES ALL ENDS IN
Flow Control DeviceDISK
Thread Series DesignatorNPT ALL ENDS
Connection TypeTHREADED INTERNAL PIPE ALL ENDS
Thread DirectionRIGHT-HAND ALL ENDS
Connection StylePLAIN, OPTIONAL END (PIPE) ALL ENDS
Mounting PositionHORIZONTAL OR VERTICAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
2590-00-236-951244055 INTERCHANGEABLE
Cap,filler Opening
Center - Moeller Products Llc
5342-00-482-15781090143 INTERCHANGEABLE
Latch,safety
The Crosby Group Llc Dba the Crosby Group
5960-00-688-7510Y2211 INTERCHANGEABLE
Electron Tube
Mpd Components, Inc.
2805-00-756-8813L100NF INTERCHANGEABLE
Piston,internal Combustion Engin
Trw Inc Trw Steering and Suspension Div
6210-00-782-1742 INTERCHANGEABLE
Lens,light
5330-00-807-2264040157 INTERCHANGEABLE
Gasket
Parker-Hannifin Corporation Dba Pneutronics Div Composite Sealing Systems Division
5340-00-996-04054055 INTERCHANGEABLE
Shield,expansion
Star Expansion Co
3439-01-021-574780-5-5 INTERCHANGEABLE
Desoldering Wick
Illinois Tool Works Inc. Div Itw Chemtronics
6640-01-101-2989 INTERCHANGEABLE
Pipet,serological
3510-01-195-21114014-703 INTERCHANGEABLE
Clamp,drive Roll
Chicago Dryer Co
Cross-Reference Index
Part NumberManufacturer
349-04-01 Oshkosh Corp (USA)
EE41084 Oshkosh Defense Llc (USA)
4055 Flomatic Corp (USA)
EE41084 Oshkosh Corp (USA)
4055 Flomatic Corporation (USA)
349-04-01 Oshkosh Defense Llc (USA)
Related Parts
2590-00-236-9512INTERCHANGEABLE
CAP,FILLER OPENING
44055
5342-00-482-1578INTERCHANGEABLE
LATCH,SAFETY
1090143
5960-00-688-7510INTERCHANGEABLE
ELECTRON TUBE
Y2211
2805-00-756-8813INTERCHANGEABLE
PISTON,INTERNAL COMBUSTION ENGIN
L100NF
6210-00-782-1742INTERCHANGEABLE
LENS,LIGHT
5330-00-807-2264INTERCHANGEABLE
GASKET
040157
5340-00-996-0405INTERCHANGEABLE
SHIELD,EXPANSION
4055
3439-01-021-5747INTERCHANGEABLE
DESOLDERING WICK
80-5-5
6640-01-101-2989INTERCHANGEABLE
PIPET,SEROLOGICAL
3510-01-195-2111INTERCHANGEABLE
CLAMP,DRIVE ROLL
4014-703
2520-01-361-8237INTERCHANGEABLE
COOLER,FLUID,TRANSMISSION
3-1261B
6515-01-362-0632INTERCHANGEABLE
LIGHT BULB,LARYNGOSCOPE

Frequently Asked Questions

What is NSN 4820-00-557-7333?

NSN 4820-00-557-7333 is a Valve,check, manufactured by Oshkosh Corp, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-557-7333?

NSN 4820-00-557-7333 has 6 cross-referenced part numbers: 349-04-01 (Oshkosh Corp), EE41084 (Oshkosh Defense Llc), 4055 (Flomatic Corp), EE41084 (Oshkosh Corp), 4055 (Flomatic Corporation) and 1 more.

What NSN replaces 4820-00-557-7333?

There are 12 known substitutes for 4820-00-557-7333: 2590-00-236-9512, 5342-00-482-1578, 5960-00-688-7510 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 349-04-01?

Key specifications for 349-04-01: Style Designator: STRAIGHT THRU; Material: COPPER ALLOY BODY; Valve Operation Method: AUTOMATIC; Nominal Thread Size: 0.375 INCHES ALL ENDS IN. 10 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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