The Ferrule,grooved Clamp Coupling, cataloged under National Stock Number 5340-01-397-3355, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Eaton Corporation Div Fed. Government technical data includes 5 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. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-397-3355 |
| Primary Part Number | 20646-300FB |
| Item Name | Ferrule,grooved Clamp Coupling |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Eaton Corporation Div Fed |
| Status | ACTIVE |
| Cross-Sectional Shape Style | FLANGED |
| Flange Length | 0.0810 INCHES MINIMUM AND 0.0850 INCHES MAXIMUM IN |
| Ferrule Inside Diameter | 0.5225 INCHES NOMINAL IN |
| Material | NICKEL ALLOY OVERALL |
| Flange Outside Diameter | 3.5050 INCHES MINIMUM AND 3.5150 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 20646-300FB PRIMARY | Eaton Corporation Div Fed (USA) |
NSN 5340-01-397-3355 is a Ferrule,grooved Clamp Coupling, manufactured by Eaton Corporation Div Fed, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-397-3355 has 1 manufacturer part number on file: 20646-300FB (Eaton Corporation Div Fed).
Key specifications for 20646-300FB: Overall Length: 0.6300 INCHES NOMINAL IN; Cross-Sectional Shape Style: FLANGED; Flange Length: 0.0810 INCHES MINIMUM AND 0.0850 INCHES MAXIMUM IN; Ferrule Inside Diameter: 0.5225 INCHES NOMINAL IN. 5 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.