The Elbow,tube, cataloged under National Stock Number 4730-01-143-4131, 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 L3harris Technologies, Inc.. Government technical data includes 6 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-143-4131 |
| Primary Part Number | 57017 ITEM 691 |
| Item Name | Elbow,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | L3harris Technologies, Inc. |
| Status | ACTIVE |
| Flow Angle | 90.0 DEGREES |
| Connection Style | SOCKET (TUBE) ALL ENDS |
| Connection Type | UNTHREADED INTERNAL TUBE ALL ENDS |
| Nominal Outside Diameter Tube Accommodated | 1.680 INCHES ALL ENDS IN |
| Leg Length | 1.560 INCHES NOMINAL ALL ENDS IN |
| Material | COPPER ALLOY OVERALL |
| 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 |
|---|---|
| 57017 ITEM 691 | L3harris Technologies, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 57017 ITEM 691 | 5/9 Secondary reference U.S. Government activity |
| 67241-1 | 3/2 Design control — primary reference U.S. Government activity |
| 67241 | D/9 Drawing number reference only U.S. Government activity |
NSN 4730-01-143-4131 is a Elbow,tube, manufactured by L3harris Technologies, Inc., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-143-4131 has 1 manufacturer part number on file: 57017 ITEM 691 (L3harris Technologies, Inc.).
3 possible matches (shared part number, not a government interchangeability claim): 4730-01-143-4132, 5330-01-491-7082, 5120-01-613-7168. Verify interchangeability with system specifications before substitution.
Key specifications for 57017 ITEM 691: Flow Angle: 90.0 DEGREES; Connection Style: SOCKET (TUBE) ALL ENDS; Connection Type: UNTHREADED INTERNAL TUBE ALL ENDS; Nominal Outside Diameter Tube Accommodated: 1.680 INCHES ALL ENDS IN. 6 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.