The Elbow,flange to Boss, cataloged under National Stock Number 4730-01-073-8017, 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 18 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-073-8017 |
| Primary Part Number | 12271512 |
| Item Name | Elbow,flange to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Recess Nominal Depth | 0.048 INCHES FIRST END IN |
| Flange Shape | RECTANGULAR WITH HOLES FIRST END |
| Flange Face Design | RECESSED STRAIGHT FIRST END |
| Connection Style | GASKET SEAL (BOSS) SECOND END |
| Nominal Length | 1.620 INCHES FIRST END IN |
| Connection Type | THREADED INTERNAL BOSS SECOND END |
| Connection Type | FLANGE FIRST END |
| Bolt Hole Nominal Diameter | 0.219 INCHES FIRST END IN |
| Leg Length | 1.000 INCHES NOMINAL FIRST END IN |
| Leg Length | 0.710 INCHES NOMINAL SECOND END IN |
| Nominal Thread Size | 0.562 INCHES SECOND END IN |
| Bolt Hole Quantity | 2 FIRST END |
| Nominal Width | 0.800 INCHES FIRST END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Length | 1.200 INCHES FIRST END IN |
| Thread Class | 3B SECOND END |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) SECOND END |
| Recess Nominal Diameter | 0.688 INCHES FIRST END 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 |
|---|---|
| 12271512 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 12286062 | 5/9 Secondary reference U S Army Tank Automotive Command Amsta-Im-Mm |
| 3-060-031-01 | 5/9 Secondary reference U.S. Government activity |
| 3-060-031-04 | 5/9 Secondary reference U.S. Government activity |
| 12286063 | 5/9 Secondary reference U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 4730-01-073-8017 is a Elbow,flange to Boss, 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 4730-01-073-8017 has 1 manufacturer part number on file: 12271512 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12271512: Recess Nominal Depth: 0.048 INCHES FIRST END IN; Flange Shape: RECTANGULAR WITH HOLES FIRST END; Flange Face Design: RECESSED STRAIGHT FIRST END; Connection Style: GASKET SEAL (BOSS) SECOND END. 18 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.