The Retainer,electron Tube, cataloged under National Stock Number 5960-00-557-6880, 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 Viking Technologies, Ltd.. Government technical data includes 11 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 | 5960-00-557-6880 |
| Primary Part Number | A3490-2 |
| Item Name | Retainer,electron Tube |
| FSC / FSG | 5960 / 59 — Electron Tubes and Associated Hardware |
| Manufacturer | Viking Technologies, Ltd. |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 1 SLOT SINGLE MOUNTING FACILITY |
| Eia Electron Tube Envelope Accommodated | T16 |
| Distance From Retainer Center to Centerline of Mounting Facility | 1.250 INCHES NOMINAL IN |
| Mounting Slot Length | 0.500 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Overall Diameter | 2.312 INCHES NOMINAL IN |
| Style Designator | PLAIN CAP HOLD DOWN W/ SCREW |
| Accommodated Item Securing Device Type | COMPRESSION RING |
| Features Provided | POST LOCKING TAB |
| Surface Treatment | PASSIVATE |
| Material | STEEL |
| Mounting Slot Width | 0.156 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| 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 |
|---|---|
| A3490-2 PRIMARY | Viking Technologies, Ltd. (USA) |
NSN 5960-00-557-6880 is a Retainer,electron Tube, manufactured by Viking Technologies, Ltd., classified under FSC 5960, Electron Tubes and Associated Hardware. Status: active.
NSN 5960-00-557-6880 has 1 manufacturer part number on file: A3490-2 (Viking Technologies, Ltd.).
Key specifications for A3490-2: Mounting Facility Type and Quantity: 1 SLOT SINGLE MOUNTING FACILITY; Eia Electron Tube Envelope Accommodated: T16; Distance From Retainer Center to Centerline of Mounting Facility: 1.250 INCHES NOMINAL IN; Mounting Slot Length: 0.500 INCHES NOMINAL SINGLE MOUNTING FACILITY IN. 11 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.