The Coupling,tube, cataloged under National Stock Number 4730-01-270-7650, 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 U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 22 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.
| Parameter | Value |
|---|---|
| NSN | 4730-01-270-7650 |
| Primary Part Number | 12355353 |
| Item Name | Coupling,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Furnished Items and Quantity | 2 NUT WITH SLEEVE |
| Surface Treatment Document and Classification | MIL-P-52192 MIL SPEC 1ST TREATMENT RESPONSE AND MIL-C-46168 MIL SPEC 2ND TREATMENT RESPONSE NUT |
| Surface Treatment Document and Classification | MIL-P-52192 MIL SPEC 1ST TREATMENT RESPONSE AND MIL-C-46168 MIL SPEC 2ND TREATMENT RESPONSE SLEEVE |
| Surface Treatment Document and Classification | MIL-P-52192 MIL SPEC 1ST TREATMENT RESPONSE AND MIL-C-46168 MIL SPEC 2ND TREATMENT RESPONSE TUBE |
| Connection Style | SWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END ALL ENDS |
| Special Test Features | TUBE ASSEMBLY TO BE PROOF TESTED AT 6000 PLUS OR MINUS 50 PSI FOR 30 TO 90 SECONDS WITHOUT LEAKAGE OR DAMAGE. |
| Nominal Overall Length | 4.000 INCHES IN |
| Connection Type | THREADED INTERNAL TUBE ALL ENDS |
| Style Designator | SWIVEL, WRENCHING FACILITIES EACH END |
| Material Document and Classification | MIL-T-8504 MIL SPEC SINGLE MATERIAL RESPONSE TUBE |
| Material Document and Classification | QQ-S-637 FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-637 FED SPEC 2ND MATERIAL RESPONSE OR MIL-S-6758 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-5626 MIL SPEC 4TH MATERIAL RESPONSE SLEEVE |
| Nominal Outside Diameter Tube Accommodated | 0.500 INCHES ALL ENDS IN |
| Nominal Thread Size | 0.750 INCHES ALL ENDS IN |
| Seat Angle | 33.0 DEGREES ALL ENDS |
| Surface Treatment | PRIMER AND PLASTIC NUT |
| Surface Treatment | PRIMER AND PLASTIC SLEEVE |
| Surface Treatment | PRIMER AND PLASTIC TUBE |
| Thread Class | 3B ALL ENDS |
| Material | STEEL NUT |
| Material | STEEL COMP 1137 OR STEEL COMP 1140 OR STEEL COMP 4130 OR STEEL COMP 4140 SLEEVE |
| Material | STEEL COMP 304 TUBE |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) 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 |
|---|---|
| 12355353 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 4730-01-270-7650 is a Coupling,tube, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-270-7650 has 1 manufacturer part number on file: 12355353 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12355353: Furnished Items and Quantity: 2 NUT WITH SLEEVE; Surface Treatment Document and Classification: MIL-P-52192 MIL SPEC 1ST TREATMENT RESPONSE AND MIL-C-46168 MIL SPEC 2ND TREATMENT RESPONSE NUT; Surface Treatment Document and Classification: MIL-P-52192 MIL SPEC 1ST TREATMENT RESPONSE AND MIL-C-46168 MIL SPEC 2ND TREATMENT RESPONSE SLEEVE; Surface Treatment Document and Classification: MIL-P-52192 MIL SPEC 1ST TREATMENT RESPONSE AND MIL-C-46168 MIL SPEC 2ND TREATMENT RESPONSE TUBE. 22 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.