The Stem,needle Valve, cataloged under National Stock Number 4820-01-600-4387, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Swagelok Co. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-600-4387 |
| Primary Part Number | M-BVM8-31926 |
| Item Name | Stem,needle Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Swagelok Co |
| Status | ACTIVE |
| Stem Actuating End Type | HEXAGON MALE |
| Valve Size for Which Designed | 0.500 INCHES IN |
| Material | NICKEL ALLOY 400 |
| 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 |
|---|---|
| M-BVM8-31926 PRIMARY | Swagelok Co (USA) |
| M-BVM8-31926-TECH | Hpf Energy Services (GBR) |
| M-BVM8-31926-TECH | Teesside Fluid System Technologies Ltd (GBR) |
| Reference | Meaning |
|---|---|
| M-BVM8-31926-TECH | 5/9 Secondary reference Swagelok Co |
NSN 4820-01-600-4387 is a Stem,needle Valve, manufactured by Swagelok Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-600-4387 has 3 manufacturer part numbers on file: M-BVM8-31926 (Swagelok Co), M-BVM8-31926-TECH (Hpf Energy Services), M-BVM8-31926-TECH (Teesside Fluid System Technologies Ltd).
Key specifications for M-BVM8-31926: Stem Actuating End Type: HEXAGON MALE; Valve Size for Which Designed: 0.500 INCHES IN; Special Features: ITEM COMPRISED OF ALLOY 400/B164 STEM;ALLOY 400/B164 BODY;ALLOY 400 BACKSTOP SCREW WHICH PREVENTS ACCIDENTAL STEM DISASSEMBLY;ALLOY 400/B165 VENT TUBE WHICH DIRECTS EXCESS GAS FROM SYSTEM LINES; Part Name Assigned by Controlling Agency: BLEED VALVE. 3 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.