The Head,sprinkler,fire Protection, cataloged under National Stock Number 4210-01-282-2574, is classified within Federal Supply Class 4210 (Firefighting Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. The manufacturer of record is Tyco Fire Products Lp. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4210-01-282-2574 |
| Primary Part Number | 32664-2-56 |
| Item Name | Head,sprinkler,fire Protection |
| FSC / FSG | 4210 / 42 — Firefighting Equipment |
| Manufacturer | Tyco Fire Products Lp |
| Status | ACTIVE |
| Opening Diameter | 0.875 INCHES NOMINAL IN |
| Head Type | SPRAY |
| Connection Thread Size | 2.500 IN.-8 IN |
| Connection Thread Series | NPT |
| Connection Thread Location | INTERNAL |
| Media for Which Designed | BROMOTRIFLUOROMETHANE |
| Material | COPPER ALLOY |
| Spray Angle Pattern | 180.0 DEGREES |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 32664-2-56 PRIMARY | Tyco Fire Products Lp (USA) |
| Reference | Meaning |
|---|---|
| 32664-2-56 | 3/9 Design control — primary reference Grinnell Corp Grinnell Fire Protection Systmes Div |
| 32664-2-56 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 4210-01-282-2574 is a Head,sprinkler,fire Protection, manufactured by Tyco Fire Products Lp, classified under FSC 4210, Firefighting Equipment. Status: active.
NSN 4210-01-282-2574 has 1 manufacturer part number on file: 32664-2-56 (Tyco Fire Products Lp).
Key specifications for 32664-2-56: Opening Diameter: 0.875 INCHES NOMINAL IN; Head Type: SPRAY; Connection Thread Size: 2.500 IN.-8 IN; Connection Thread Series: NPT. 8 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
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.