NSN 4820-01-124-5528 · NIIN 011245528 · Part number 23700
American Bristol Industries Inc. · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 55612
Government record, cited
NSN 4820-01-124-5528 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-124-5528. Manufacturer of record part number: 23700.
Also searched as4820-01-124-5528 ·
4820011245528 ·
NIIN 011245528 ·
01-124-5528 ·
FSC 4820 Valves, Nonpowered · CAGE 55612 · 23700
The Valve,safety Relief, cataloged under National Stock Number 4820-01-124-5528, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is American Bristol Industries Inc.. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-01-124-5528
Primary Part Number
23700
Item Name
Valve,safety Relief
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
American Bristol Industries Inc.
Status
ACTIVE
Flow Control Device
POPPET
Connection Style
PLAIN (PIPE) FIRST END
Connection Type
THREADED EXTERNAL PIPE FIRST END
Style Designator
ANGLE
Bonnet Type
INSIDE SPRING
Thread Direction
RIGHT-HAND FIRST END
Nominal Thread Size
0.250 INCHES FIRST END IN
Disk Loading Method
SPRING
Bonnet Attachment Method
THREADED
Material
COPPER ALLOY OVERALL
Thread Series Designator
BSP.PL FIRST END
Opening Pressure Setting
1400.0 POUNDS PER SQUARE INCH LBS
Valve Operation Method
AUTOMATIC
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items5
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
1610-01-187-918123700POSSIBLE MATCH
PROPELLER SYSTEM
Possible match (shared part number)Hamilton Sundstrand Corporation Dba Collins Aerospace
4820-01-196-1195237-00POSSIBLE MATCH
SEAT,VALVE
Possible match (shared part number)Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
6630-01-351-0019POSSIBLE MATCH
CALORIMETER
Possible match (shared part number)
3415-01-384-0064POSSIBLE MATCH
GRINDING AND BUFFING MACHINE,UTI
Possible match (shared part number)
4130-01-718-236023700POSSIBLE MATCH
HEAT INTERCHANGER,REFRIGERANT
Possible match (shared part number)Adams Thermal Systems Inc
NSN 4820-01-124-5528 is a Valve,safety Relief, manufactured by American Bristol Industries Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-124-5528?
NSN 4820-01-124-5528 has 1 manufacturer part number on file: 23700 (American Bristol Industries Inc.).
What NSN replaces 4820-01-124-5528?
5 possible matches (shared part number, not a government interchangeability claim): 1610-01-187-9181, 4820-01-196-1195, 6630-01-351-0019. Verify interchangeability with system specifications before substitution.
What are the specifications of 23700?
Key specifications for 23700: Flow Control Device: POPPET; Connection Style: PLAIN (PIPE) FIRST END; Connection Type: THREADED EXTERNAL PIPE FIRST END; Style Designator: ANGLE. 13 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-124-5528 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.