The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-01-259-8847, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings 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 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-01-259-8847 |
| Primary Part Number | GR531BA1 |
| Item Name | Coupling Half,quick Disconnect |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-A-8625,TY 2,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE BODY |
| Connection Style | PLAIN ALL ENDS |
| Nominal Length | 2.500 INCHES IN |
| Bolt Circle Nominal Diameter | 4.000 INCHES IN |
| Connection Type | FLANGE FIRST FLUID END CONNECTION |
| Style Designator | MALE COUPLING HALF |
| Material Document and Classification | AMS4217D ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Bolt Hole Nominal Diameter | 0.205 INCHES IN |
| Leg Length | 0.850 INCHES NOMINAL IN |
| Basic Shape Style | OVAL STYLE 6 MUST HAVE 2 BOLT HOLES FIRST FLUID END CONNECTION |
| Bolt Hole Quantity | 2 |
| Surface Treatment | ANODIZE BODY |
| Nominal Width | 1.500 INCHES IN |
| Material | ALUMINUM ALLOY BODY |
| Quick Disconnect Method | PUSH-PULL ALL ENDS |
| Nominal Thickness | 0.125 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| GR531BA1 | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 6964-000264 | 3/2 Design control — primary reference U.S. Government activity |
| GR531BA | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
NSN 4730-01-259-8847 is a Coupling Half,quick Disconnect, manufactured by Northrop Grumman Systems Corporation, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-259-8847 has 1 manufacturer part number on file: GR531BA1 (Northrop Grumman Systems Corporation).
Key specifications for GR531BA1: Surface Treatment Document and Classification: MIL-A-8625,TY 2,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE BODY; Connection Style: PLAIN ALL ENDS; Nominal Length: 2.500 INCHES IN; Bolt Circle Nominal Diameter: 4.000 INCHES 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.