The Valve,ball, cataloged under National Stock Number 4820-01-645-3643, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Inline Industries Inc. Government technical data includes 15 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.
| Parameter | Value |
|---|---|
| NSN | 4820-01-645-3643 |
| Primary Part Number | 503F-1/2" |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Inline Industries Inc |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 HANDLE |
| Valve Model Number for Which Designed | 503F |
| Minimum Operating Temp | -20.0 FAHRENHEIT DEGF |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Style Designator | CROSS |
| Material Document and Classification | A351 GR. CF8M ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Operating Pressure | 1000.00 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Valve Size | 0.50 INCHES IN |
| Maximum Operating Temp | 420.00 FAHRENHEIT SINGLE RESPONSE DEGF |
| Face to Face Distance | 3.14 INCHES IN |
| Material | STEEL BODY |
| Material | STEEL COMP 316 STEM |
| Material | STEEL COMP 316 FLOW CONTROL DEVICE |
| Material | STEEL COMP 304 PACKING |
| Valve Operation Method | MANUAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 503F-1/2" PRIMARY | Inline Industries Inc (USA) |
NSN 4820-01-645-3643 is a Valve,ball, manufactured by Inline Industries Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-645-3643 has 1 manufacturer part number on file: 503F-1/2" (Inline Industries Inc).
Key specifications for 503F-1/2": Furnished Items and Quantity: 1 HANDLE; Valve Model Number for Which Designed: 503F; Minimum Operating Temp: -20.0 FAHRENHEIT DEGF; Connection Type: THREADED INTERNAL PIPE ALL ENDS. 15 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.