The Coupling Half,self-Sealing, cataloged under National Stock Number 4730-01-226-3326, 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 Tuthill Corp Hansen Coupling Div. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-01-226-3326 |
| Primary Part Number | A8-H6S |
| Item Name | Coupling Half,self-Sealing |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Tuthill Corp Hansen Coupling Div |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE BODY |
| Connection Style | PLAIN ALL ENDS |
| Mating End Identification | IMPERIAL CLEVITE,COUPLING HALF,SELF-SEALING,P/N 6305-066 |
| Connection Type | THREADED INTERNAL PIPE FIRST FLUID END CONNECTION |
| Style Designator | MALE COUPLING HALF |
| Material Document and Classification | QQ-A-225/6, T4 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-225/5, T4 FED SPEC 2ND MATERIAL RESPONSE BODY |
| Features Provided | SELF-SEALING |
| Nominal Thread Size | 1.250 INCHES ALL ENDS IN |
| Specification/standard Data | 19207-10866372 MANUFACTURERS SOURCE CONTROL |
| Maximum Operating Temp | 310.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Surface Treatment | ANODIZE BODY |
| Media for Which Designed | HYDRAULIC FLUID, PETROLEUM BASE SINGLE RESPONSE |
| Material | ALUMINUM ALLOY BODY |
| Thread Series Designator | NPT ALL ENDS |
| 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 |
|---|---|
| 10866372 COUPLER | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| A8-H6S PRIMARY | Tuthill Corp Hansen Coupling Div (USA) |
| Reference | Meaning |
|---|---|
| 6305-065 | 3/2 Design control — primary reference U.S. Government activity |
| 10866372 COUPLER | 5/2 Secondary reference U.S. Government activity |
NSN 4730-01-226-3326 is a Coupling Half,self-Sealing, manufactured by Tuthill Corp Hansen Coupling Div, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-226-3326 has 2 manufacturer part numbers on file: 10866372 COUPLER (U S Army Tank Automotive Command Amsta-Im-Mm), A8-H6S (Tuthill Corp Hansen Coupling Div).
Key specifications for A8-H6S: Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE BODY; Connection Style: PLAIN ALL ENDS; Mating End Identification: IMPERIAL CLEVITE,COUPLING HALF,SELF-SEALING,P/N 6305-066; Connection Type: THREADED INTERNAL PIPE FIRST FLUID END CONNECTION. 14 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.