The Adapter,straight,flange to Tube, cataloged under National Stock Number 4730-01-321-6428, 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 Aeronautical and Support Equipment Type/asetds/aflcmc/ezsc. Government technical data includes 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-321-6428 |
| Primary Part Number | 83-84107 PC 168 |
| Item Name | Adapter,straight,flange to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Aeronautical and Support Equipment Type/asetds/aflcmc/ezsc |
| Status | ACTIVE |
| Flange Shape | RECTANGULAR WITH HOLES SECOND END |
| Flange Face Design | PLAIN SECOND END |
| Connection Style | FLARED (TUBE) FIRST END |
| Nominal Overall Length | 2.760 INCHES IN |
| Connection Type | FLANGE SECOND END |
| Connection Type | UNTHREADED EXTERNAL TUBE FIRST END |
| Material Document and Classification | MIL-S-7720 MIL SPEC SINGLE MATERIAL RESPONSE TUBE |
| Material Document and Classification | QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE FLANGE |
| Nominal Outside Diameter Tube Accommodated | 3.461 INCHES FIRST END IN |
| Seat Angle | 37.0 DEGREES FIRST END |
| Bolt Hole Quantity | 4 SECOND END |
| Material | STEEL COMP 303 TUBE |
| Material | STEEL COMP 304 FLANGE |
| Nominal Thickness | 0.135 INCHES SECOND 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 |
|---|---|
| 83-84107 PC 168 PRIMARY | Aeronautical and Support Equipment Type/asetds/aflcmc/ezsc (USA) |
| Reference | Meaning |
|---|---|
| 83-83789 | D/9 Drawing number reference only Aeronautical and Support Equipment Type/asetds/aflcmc/ezsc |
NSN 4730-01-321-6428 is a Adapter,straight,flange to Tube, manufactured by Aeronautical and Support Equipment Type/asetds/aflcmc/ezsc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-321-6428 has 1 manufacturer part number on file: 83-84107 PC 168 (Aeronautical and Support Equipment Type/asetds/aflcmc/ezsc).
Key specifications for 83-84107 PC 168: Flange Shape: RECTANGULAR WITH HOLES SECOND END; Flange Face Design: PLAIN SECOND END; Connection Style: FLARED (TUBE) FIRST END; Nominal Overall Length: 2.760 INCHES IN. 14 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.