The Shield,electron Tube, cataloged under National Stock Number 5960-00-003-6631, is classified within Federal Supply Class 5960 (Electron Tubes and Associated Hardware) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Mushield Co Inc. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5960-00-003-6631 |
| Primary Part Number | 420190 |
| Item Name | Shield,electron Tube |
| FSC / FSG | 5960 / 59 — Electron Tubes and Associated Hardware |
| Manufacturer | Mushield Co Inc |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 3 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY |
| Overall Diameter | 3.810 INCHES NOMINAL IN |
| Unthreaded Mounting Hole Diameter | 0.166 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Style Designator | CYLINDRICAL |
| Bolt Circle Diameter | 3.375 INCHES MINIMUM AND 3.385 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Surface Treatment | ENAMEL |
| Material | NICKEL ALLOY |
| 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 |
|---|---|
| 420190 PRIMARY | Mushield Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 420190 | 5/9 Secondary reference U.S. Government activity |
| 420190 | 5/9 Secondary reference U.S. Government activity |
NSN 5960-00-003-6631 is a Shield,electron Tube, manufactured by Mushield Co Inc, classified under FSC 5960, Electron Tubes and Associated Hardware. Status: active.
NSN 5960-00-003-6631 has 1 manufacturer part number on file: 420190 (Mushield Co Inc).
Key specifications for 420190: Mounting Facility Type and Quantity: 3 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY; Overall Diameter: 3.810 INCHES NOMINAL IN; Unthreaded Mounting Hole Diameter: 0.166 INCHES NOMINAL SINGLE MOUNTING FACILITY IN; Style Designator: CYLINDRICAL. 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.