The Stem,fluid Valve, cataloged under National Stock Number 4820-01-251-5290, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Crane Co Div Valve Div. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-251-5290 |
| Primary Part Number | 19871-18 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Crane Co Div Valve Div |
| Status | ACTIVE |
| Material | COPPER ALLOY |
| Largest Outside Diameter | 0.625 INCHES NOMINAL IN |
| Stem Actuating End Type | THREADED EXTERNALLY |
| Valve Type for Which Designed | RELIEF |
| Valve Size for Which Designed | 1.250 INCHES IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 19871-18 PRIMARY | Crane Co Div Valve Div (USA) |
| CV9-S4501-026-18 PRIMARY | Naval Ship Systems Command (USA) |
| 19871 PIECE 18 | Crane Co Div Valve Div (USA) |
| CV9-S4501-026 | Naval Ship Systems Command (USA) |
| 19871 | Crane Co Div Valve Div (USA) |
NSN 4820-01-251-5290 is a Stem,fluid Valve, manufactured by Crane Co Div Valve Div, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-251-5290 has 5 cross-referenced part numbers: 19871-18 (Crane Co Div Valve Div), CV9-S4501-026-18 (Naval Ship Systems Command), 19871 PIECE 18 (Crane Co Div Valve Div), CV9-S4501-026 (Naval Ship Systems Command), 19871 (Crane Co Div Valve Div).
There are 6 known substitutes for 4820-01-251-5290: 5330-00-080-7381, 2805-00-569-8973, 4820-01-251-3123 and 3 more. Verify interchangeability with system specifications before substitution.
Key specifications for 19871-18: Material: COPPER ALLOY; Largest Outside Diameter: 0.625 INCHES NOMINAL IN; Overall Length: 8.625 INCHES NOMINAL IN; Stem Actuating End Type: THREADED EXTERNALLY. 6 total characteristics are documented in the Federal Logistics Information System.