The Head,sprinkler,fire Protection, cataloged under National Stock Number 4210-01-443-5145, 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 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4210-01-443-5145 |
| Primary Part Number | 52921N 360-17 |
| Item Name | Head,sprinkler,fire Protection |
| FSC / FSG | 4210 / 42 — Firefighting Equipment |
| Manufacturer | Tyco Fire Products Lp |
| Status | ACTIVE |
| Head Type | SPRINKLER |
| Connection Thread Size | 1 IN.-11-1/2 IN |
| Connection Thread Series | NPT |
| Connection Thread Location | EXTERNAL |
| Media for Which Designed | BROMOTRIFLUOROMETHANE |
| Material | STEEL CORROSION RESISTING |
| Spray Angle Pattern | 360.0 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 |
|---|---|
| 52921N-4-17 | Tyco Fire Products Lp (USA) |
| 52921N 360-17 PRIMARY | Tyco Fire Products Lp (USA) |
| Reference | Meaning |
|---|---|
| 52921N-360-17 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 52921N | D/9 Drawing number reference only Tyco Fire Products Lp |
NSN 4210-01-443-5145 is a Head,sprinkler,fire Protection, manufactured by Tyco Fire Products Lp, classified under FSC 4210, Firefighting Equipment. Status: active.
NSN 4210-01-443-5145 has 2 manufacturer part numbers on file: 52921N-4-17 (Tyco Fire Products Lp), 52921N 360-17 (Tyco Fire Products Lp).
Key specifications for 52921N 360-17: Head Type: SPRINKLER; Connection Thread Size: 1 IN.-11-1/2 IN; Connection Thread Series: NPT; Connection Thread Location: EXTERNAL. 7 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.