The Elbow,tube to Boss, cataloged under National Stock Number 4730-01-040-5326, 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 Cmbf, Llc Dba Cmbf Llc. Government technical data includes 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-040-5326 |
| Primary Part Number | 57-324 |
| Item Name | Elbow,tube to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Cmbf, Llc Dba Cmbf Llc |
| Status | ACTIVE |
| Flow Angle | 90.0 DEGREES |
| Connection Style | SOCKET (TUBE) FIRST END |
| Connection Type | UNTHREADED INTERNAL TUBE FIRST END |
| Connection Type | THREADED INTERNAL BOSS SECOND END |
| Nominal Outside Diameter Tube Accommodated | 0.750 INCHES FIRST END IN |
| Nominal Thread Size | 0.750 INCHES SECOND END IN |
| Surface Treatment | PRIMER OVERALL |
| Thread Class | 2B SECOND END |
| Material | ALUMINUM ALLOY OVERALL |
| Thread Series Designator | UNF SECOND END |
| 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 |
|---|---|
| 57-324 PRIMARY | Cmbf, Llc Dba Cmbf Llc (USA) |
| Reference | Meaning |
|---|---|
| 57-324 | 3/9 Design control — primary reference Motion Control Industries, Inc. |
| 57-324 | 5/9 Secondary reference U.S. Government activity |
NSN 4730-01-040-5326 is a Elbow,tube to Boss, manufactured by Cmbf, Llc Dba Cmbf Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-040-5326 has 1 manufacturer part number on file: 57-324 (Cmbf, Llc Dba Cmbf Llc).
1 possible match (shared part number, not a government interchangeability claim): 5120-01-432-1610. Verify interchangeability with system specifications before substitution.
Key specifications for 57-324: Flow Angle: 90.0 DEGREES; Connection Style: SOCKET (TUBE) FIRST END; Connection Type: UNTHREADED INTERNAL TUBE FIRST END; Connection Type: THREADED INTERNAL BOSS SECOND END. 10 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.