The Coupling Half,self-Sealing, cataloged under National Stock Number 4730-01-226-3327, 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 15 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-01-226-3327 |
| Primary Part Number | L8-K6M |
| 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 | QQ-P-416, TYPE 2, CLASS 3 FED SPEC ALL TREATMENT RESPONSES BODY |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL ALL ENDS |
| Mating End Identification | IMPERIAL CLEVITE,COUPLING HALF,SELF-SEALING,P/N 6305-65 |
| Connection Type | THREADED EXTERNAL BOSS FIRST FLUID END CONNECTION |
| Style Designator | MALE COUPLING HALF |
| Material Document and Classification | ASTM A107 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A108 ASSN STD 2ND MATERIAL RESPONSE BODY |
| Features Provided | SELF-SEALING |
| Nominal Thread Size | 1.625 INCHES ALL ENDS IN |
| Specification/standard Data | 19207-10866372 MANUFACTURERS SOURCE CONTROL |
| Maximum Operating Temp | 310.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Surface Treatment | CADMIUM AND CHROMATE BODY |
| Thread Class | 2A ALL ENDS A |
| Thread Quantity Per Inch | 12 ALL ENDS |
| Material | STEEL BODY |
| Thread Series Designator | UN 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 NIPPLE | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| L8-K6M PRIMARY | Tuthill Corp Hansen Coupling Div (USA) |
| Reference | Meaning |
|---|---|
| 6305-066 | 3/2 Design control — primary reference U.S. Government activity |
| 10866372 NIPPLE | 5/2 Secondary reference U.S. Government activity |
NSN 4730-01-226-3327 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 4730-01-226-3327 has 2 manufacturer part numbers on file: 10866372 NIPPLE (U S Army Tank Automotive Command Amsta-Im-Mm), L8-K6M (Tuthill Corp Hansen Coupling Div).
Key specifications for L8-K6M: Surface Treatment Document and Classification: QQ-P-416, TYPE 2, CLASS 3 FED SPEC ALL TREATMENT RESPONSES BODY; Connection Style: EXTERNAL SEAT FOR GASKET SEAL ALL ENDS; Mating End Identification: IMPERIAL CLEVITE,COUPLING HALF,SELF-SEALING,P/N 6305-65; Connection Type: THREADED EXTERNAL BOSS FIRST FLUID END CONNECTION. 15 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.