The Coupling,clamp,grooved, cataloged under National Stock Number 5342-01-012-7554, is classified within Federal Supply Class 5342 (Hardware, Weapon System) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5342-01-012-7554 |
| Primary Part Number | GC550EJ50 |
| Item Name | Coupling,clamp,grooved |
| FSC / FSG | 5342 / 53 — Hardware, Weapon System |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Included Angle in Deg | 40.0 |
| Temp Rating | 392.0 FAHRENHEIT DEGF |
| Band Width | 0.655 INCHES NOMINAL IN |
| Retainer Width | 0.655 INCHES MAXIMUM IN |
| Shape | ROUND |
| Cross-Sectional Shape Style | GROOVED RETAINER |
| Specification/standard Data | 26512-GC550 MANUFACTURERS SPECIFICATION |
| Sealing Inner Liner | NOT INCLUDED |
| Inside Diameter | 4.340 INCHES MINIMUM AND 4.360 INCHES MAXIMUM IN |
| Nut Type | PLAIN SQUARE |
| Segment Quantity | 2 |
| Material | STEEL CORROSION RESISTING NUT |
| Material | STEEL CORROSION RESISTING BOLT |
| Material | ALUMINUM ALLOY RETAINER |
| Material | ALUMINUM ALLOY SLEEVE |
| Latch Style | SINGLE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5342-01-012-7554 is a Coupling,clamp,grooved, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5342, Hardware, Weapon System. Status: active.
NSN 5342-01-012-7554 has 3 manufacturer part numbers on file: GC550EJ50 (Northrop Grumman Systems Corporation), 8937-400 (Eaton Corporation Div Fed), D17617 (Titan Windows Inc).
Key specifications for GC550EJ50: Included Angle in Deg: 40.0; Temp Rating: 392.0 FAHRENHEIT DEGF; Band Width: 0.655 INCHES NOMINAL IN; Retainer Width: 0.655 INCHES MAXIMUM IN. 16 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.