NSN 4210-01-557-1183 · NIIN 015571183 · Part number 20370476
Chemetron Fire Systems · FSC 4210 — Firefighting Equipment · FSG 42 — Fire Fighting, Rescue, and Safety Equipment · CAGE 1CSX7
Government record, cited
NSN 4210-01-557-1183 — this item is cataloged by the U.S. Government under National Stock Number 4210-01-557-1183. Manufacturer of record part number: 20370476.
Also searched as4210-01-557-1183 ·
4210015571183 ·
NIIN 015571183 ·
01-557-1183 ·
FSC 4210 Firefighting Equipment · CAGE 1CSX7 · 20370476
Nearby stock numbers← 4210-01-557-0980
·
4210-01-557-1533 Extinguisher, Fire →
Features
Head,sprinkler,fire Protection — FSC 4210
Flow Capacity at Specified Pressure Rating: 1.68 GAL PER MIN AT 350 PSI
Connection Thread Series: NPT
Media for Which Designed: WATER
Material: STEEL CORROSION RESISTING AND COPPER ALLOY
1 manufacturer part number on file
Manufacturer of record: Chemetron Fire Systems
Identification
NSN: 4210-01-557-1183
NIIN: 015571183
FSC: 4210 — Firefighting Equipment
FSG: 42 — Fire Fighting, Rescue, and Safety Equipment
Primary part number: 20370476
Manufacturer: Chemetron Fire Systems
General Description
The Head,sprinkler,fire Protection, cataloged under National Stock Number 4210-01-557-1183, is classified within Federal Supply Class 4210 (Firefighting Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. The manufacturer of record is Chemetron Fire Systems. Government technical data includes 4 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. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4210-01-557-1183
Primary Part Number
20370476
Item Name
Head,sprinkler,fire Protection
FSC / FSG
4210 / 42 — Firefighting Equipment
Manufacturer
Chemetron Fire Systems
Status
ACTIVE
Flow Capacity at Specified Pressure Rating
1.68 GAL PER MIN AT 350 PSI
Connection Thread Series
NPT
Media for Which Designed
WATER
Material
STEEL CORROSION RESISTING AND COPPER ALLOY
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4210-00-001-3525
CYLINDER ASSEMBLY,LIQUID
4210-00-001-3526
CYLINDER ASSEMBLY,LIQUID
4210-00-003-6976
4210-00-003-6976 · Item name not on file
4210-00-004-8316
NOZZLE,FIRE EQUIPMENT
4210-00-005-1080
4210-00-005-1080 · Item name not on file
4210-00-005-7152
4210-00-005-7152 · Item name not on file
4210-00-005-7684
4210-00-005-7684 · Item name not on file
4210-00-006-6244
4210-00-006-6244 · Item name not on file
Frequently Asked Questions
What is NSN 4210-01-557-1183?
NSN 4210-01-557-1183 is a Head,sprinkler,fire Protection, manufactured by Chemetron Fire Systems, classified under FSC 4210, Firefighting Equipment. Status: active.
What part numbers are listed for NSN 4210-01-557-1183?
NSN 4210-01-557-1183 has 1 manufacturer part number on file: 20370476 (Chemetron Fire Systems).
What are the specifications of 20370476?
Key specifications for 20370476: Flow Capacity at Specified Pressure Rating: 1.68 GAL PER MIN AT 350 PSI; Connection Thread Series: NPT; Media for Which Designed: WATER; Part Name Assigned by Controlling Agency: FS MACHINERY SPACE NOZZLE. 4 specifications are documented in the U.S. Government catalog.
Is NSN 4210-01-557-1183 hazardous material?
Possible hazard — SDS may be required (DLA HMIC P). 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.