The Retainer,electron Tube, cataloged under National Stock Number 5960-00-581-9717, 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 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple. Government technical data includes 12 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5960-00-581-9717 |
| Primary Part Number | C458-976 |
| Item Name | Retainer,electron Tube |
| FSC / FSG | 5960 / 59 — Electron Tubes and Associated Hardware |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 2 SLOT SINGLE MOUNTING FACILITY |
| Distance From Retainer Center to Centerline of Mounting Facility | 0.969 INCHES NOMINAL IN |
| Mounting Slot Length | 0.250 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Distance From Retainer Center to Mounting Facility Center at Loop Tightening Device | 0.953 INCHES NOMINAL IN |
| Style Designator | DOUBLE FOOT, SCREW CLAMP |
| Accommodated Item Securing Device Type | CLAMP |
| Distance Between Mounting Facility Centers | 1.922 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Inside Diameter | 1.337 INCHES MINIMUM AND 1.377 INCHES MAXIMUM IN |
| Electron Tube Base Accommodated Diameter | +1.337 TO 1.377 INCHES IN |
| Surface Treatment | PASSIVATE |
| Material | STEEL |
| Mounting Slot Width | 0.125 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 |
|---|---|
| C458-976 PRIMARY | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple (USA) |
| Reference | Meaning |
|---|---|
| CWS458-976 | 5/9 Secondary reference Scomill Inc |
| CWS458-976 | 5/9 Secondary reference Northrop Grumman Systems Corporation Div Es Defensive Systems Division |
| 42X200937 | 5/9 Secondary reference Stewart-Warner Corporation |
| C458-976 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Div Es Defensive Systems Division |
NSN 5960-00-581-9717 is a Retainer,electron Tube, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple, classified under FSC 5960, Electron Tubes and Associated Hardware. Status: active.
NSN 5960-00-581-9717 has 1 manufacturer part number on file: C458-976 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple).
Key specifications for C458-976: Mounting Facility Type and Quantity: 2 SLOT SINGLE MOUNTING FACILITY; Overall Height: 0.625 INCHES NOMINAL IN; Distance From Retainer Center to Centerline of Mounting Facility: 0.969 INCHES NOMINAL IN; Mounting Slot Length: 0.250 INCHES NOMINAL SINGLE MOUNTING FACILITY IN. 12 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.