The Pipe,bent,metallic, cataloged under National Stock Number 4710-01-691-7972, is classified within Federal Supply Class 4710 (Pipe, Tube and Rigid Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Diesel Radiator Co.. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4710-01-691-7972 |
| Primary Part Number | DR4321-91 |
| Item Name | Pipe,bent,metallic |
| FSC / FSG | 4710 / 47 — Pipe, Tube and Rigid Tubing |
| Manufacturer | Diesel Radiator Co. |
| Status | ACTIVE |
| First End Inside Diameter | 2.37 INCHES NOMINAL IN |
| Nominal Pipe Size Designation | 2.50 INCHES IN |
| First End Style | PLAIN |
| Material Document and Classification | ASTM A787 ASSN STD 1ST MATERIAL RESPONSE |
| Diameter | 2.50 INCHES NOMINAL IN |
| Second End Inside Diameter | 2.37 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | PLAIN ROUND |
| Wall Thickness | 0.38 INCHES NOMINAL IN |
| Second End Relationship with First End | IDENTICAL |
| Second End Outside Diameter | 2.50 INCHES NOMINAL IN |
| Second End Style | PLAIN |
| Width | 12.82 INCHES NOMINAL IN |
| Material | STEEL |
| First End Outside Diameter | 2.50 INCHES NOMINAL 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 |
|---|---|
| DR4321-91 PRIMARY | Diesel Radiator Co. (USA) |
| Reference | Meaning |
|---|---|
| 17-60062 | 7/2 Vendor item drawing reference Department of Defense Project Manager-Mobile Electric Power |
NSN 4710-01-691-7972 is a Pipe,bent,metallic, manufactured by Diesel Radiator Co., classified under FSC 4710, Pipe, Tube and Rigid Tubing. Status: active.
NSN 4710-01-691-7972 has 1 manufacturer part number on file: DR4321-91 (Diesel Radiator Co.).
Key specifications for DR4321-91: First End Inside Diameter: 2.37 INCHES NOMINAL IN; Nominal Pipe Size Designation: 2.50 INCHES IN; First End Style: PLAIN; Material Document and Classification: ASTM A787 ASSN STD 1ST MATERIAL RESPONSE. 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.