PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

115657176FN25Valve,check

Bird-Johnson Propeller Company, Llc · NSN 4820-01-340-1252 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-340-1252 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-340-1252. Primary manufacturer part number: 115657176FN25.
Features
  • Valve,check — FSC 4820
  • Opening Pressure Setting: 50.0 POUNDS PER SQUARE INCH LBS
  • Valve Operation Method: AUTOMATIC
  • 4 verified cross-references
  • Primary manufacturer: Bird-Johnson Propeller Company, Llc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,check, cataloged under National Stock Number 4820-01-340-1252, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Bird-Johnson Propeller Company, Llc. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 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
NSN4820-01-340-1252
Primary Part Number115657176FN25
Item NameValve,check
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerBird-Johnson Propeller Company, Llc
StatusACTIVE
Opening Pressure Setting50.0 POUNDS PER SQUARE INCH LBS
Valve Operation MethodAUTOMATIC
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5310-00-214-3195 INTERCHANGEABLE
Nut,plain,slotted,hexagon
5998-00-252-7147 INTERCHANGEABLE
Circuit Card Assembly
6220-00-299-5646 INTERCHANGEABLE
Light,marker,clearance
5915-00-491-6326740829-103 INTERCHANGEABLE
Filter,band Pass
Lockheed Martin Corp
6145-00-519-2307111511-0001 INTERCHANGEABLE
Cable,power,electrical
Thales Usa, Inc. Div Air Mobility Solutions ("ams")
5330-00-584-59331951A3 INTERCHANGEABLE
Gasket
Circor Aerospace, Inc. Dba Circor Aerospace Inc
6625-00-834-9485TS-1294A/U INTERCHANGEABLE
Test Set,semiconductor Device
Joint Electronics Type Designation System
5910-00-865-45101951 INTERCHANGEABLE
Capacitor,variable,air Dielectri
Knowles Cazenovia, Inc. Div Johanson Manufacturing
6510-01-085-47411951 INTERCHANGEABLE
Cellulose,oxidized Regenerated
Johnson & Johnson Sales and Logistics Company Llc Div Sales and Logistics Company, Llc
5985-01-145-22001951 INTERCHANGEABLE
Switch,radio Frequency Transmiss
General Microwave Corporation Div Kratos Microwave Electronics
Cross-Reference Index
Part NumberManufacturer
115657175FN25 Bird-Johnson Propeller Company, Llc (USA)
P-2-1-16 Bird-Johnson Propeller Company, Llc (USA)
1951 Kepner Products Co Div Kepner Products Company (USA)
115657176FN25 PRIMARY Bird-Johnson Propeller Company, Llc (USA)
Related Parts
5310-00-214-3195INTERCHANGEABLE
NUT,PLAIN,SLOTTED,HEXAGON
5998-00-252-7147INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
6220-00-299-5646INTERCHANGEABLE
LIGHT,MARKER,CLEARANCE
5915-00-491-6326INTERCHANGEABLE
FILTER,BAND PASS
740829-103
6145-00-519-2307INTERCHANGEABLE
CABLE,POWER,ELECTRICAL
111511-0001
5330-00-584-5933INTERCHANGEABLE
GASKET
1951A3
6625-00-834-9485INTERCHANGEABLE
TEST SET,SEMICONDUCTOR DEVICE
TS-1294A/U
5910-00-865-4510INTERCHANGEABLE
CAPACITOR,VARIABLE,AIR DIELECTRI
1951
6510-01-085-4741INTERCHANGEABLE
CELLULOSE,OXIDIZED REGENERATED
1951
5985-01-145-2200INTERCHANGEABLE
SWITCH,RADIO FREQUENCY TRANSMISS
1951
6550-01-217-8842INTERCHANGEABLE
TEST KIT,ANTIBODY DETECTION,RED
719510
6510-01-310-6295INTERCHANGEABLE
CELLULOSE,OXIDIZED REGENERATED
MA-376-89

Frequently Asked Questions

What is NSN 4820-01-340-1252?

NSN 4820-01-340-1252 is a Valve,check, manufactured by Bird-Johnson Propeller Company, Llc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-340-1252?

NSN 4820-01-340-1252 has 4 cross-referenced part numbers: 115657175FN25 (Bird-Johnson Propeller Company, Llc), P-2-1-16 (Bird-Johnson Propeller Company, Llc), 1951 (Kepner Products Co Div Kepner Products Company), 115657176FN25 (Bird-Johnson Propeller Company, Llc).

What NSN replaces 4820-01-340-1252?

There are 12 known substitutes for 4820-01-340-1252: 5310-00-214-3195, 5998-00-252-7147, 6220-00-299-5646 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 115657176FN25?

Key specifications for 115657176FN25: Special Features: CARTRIDGE TYPE; Opening Pressure Setting: 50.0 POUNDS PER SQUARE INCH LBS; Valve Operation Method: AUTOMATIC. 3 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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