The Disk,valve, cataloged under National Stock Number 4820-00-126-3097, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is M.t. Davidson Company. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-126-3097 |
| Primary Part Number | G-103-138 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | M.t. Davidson Company |
| Status | ACTIVE |
| Shank Diameter | 0.875 INCHES NOMINAL IN |
| Flange Seat to Disk End Height | 0.562 INCHES NOMINAL IN |
| Outside Diameter | 2.562 INCHES NOMINAL IN |
| Style Designator | POPPET |
| Seat Angle | 45.0 DEGREES NOMINAL |
| Inside Diameter | 0.578 INCHES NOMINAL IN |
| Material | COPPER ALLOY |
| 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 |
|---|---|
| G-103-138 PRIMARY | M.t. Davidson Company (USA) |
| Reference | Meaning |
|---|---|
| 107 | 5/9 Secondary reference M.t. Davidson Company |
NSN 4820-00-126-3097 is a Disk,valve, manufactured by M.t. Davidson Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-126-3097 has 1 manufacturer part number on file: G-103-138 (M.t. Davidson Company).
Key specifications for G-103-138: Shank Diameter: 0.875 INCHES NOMINAL IN; Flange Seat to Disk End Height: 0.562 INCHES NOMINAL IN; Overall Height: 0.859 INCHES NOMINAL IN; Outside Diameter: 2.562 INCHES NOMINAL IN. 7 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.