The Flange,pipe, cataloged under National Stock Number 4730-01-325-9053, 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 Derbyshire Machine & Tool Co. Government technical data includes 5 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-325-9053 |
| Primary Part Number | 2621-228-02 PIECE 143 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Derbyshire Machine & Tool Co |
| Status | ACTIVE |
| Face Seating Surface Condition | MACHINED |
| Nominal Pipe Size for Which Designed | 1.500 INCHES IN |
| Style Designator | ROUND, ONE BOLT HOLE CIRCLE |
| Material Document and Classification | ASTMD1784 ASSN STD SINGLE MATERIAL RESPONSE |
| Material | ELASTOMER POLYVINYL CHLORIDE |
| 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 |
|---|---|
| 2621-228-02 PIECE 143 PRIMARY | Derbyshire Machine & Tool Co (USA) |
| Reference | Meaning |
|---|---|
| 510-4686203 ITEM F17 | 5/2 Secondary reference U.S. Government activity |
| 13-97-0450 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 2621-228-02 PIECE 143 | 3/2 Design control — primary reference U.S. Government activity |
| 2621-228-01 | D/9 Drawing number reference only U.S. Government activity |
| 845-4687676 PIE | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 4730-01-325-9053 is a Flange,pipe, manufactured by Derbyshire Machine & Tool Co, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-325-9053 has 1 manufacturer part number on file: 2621-228-02 PIECE 143 (Derbyshire Machine & Tool Co).
5 possible matches (shared part number, not a government interchangeability claim): 4730-01-325-9054, 4730-01-326-0842, 4730-01-326-1449. Verify interchangeability with system specifications before substitution.
Key specifications for 2621-228-02 PIECE 143: Face Seating Surface Condition: MACHINED; Nominal Pipe Size for Which Designed: 1.500 INCHES IN; Style Designator: ROUND, ONE BOLT HOLE CIRCLE; Material Document and Classification: ASTMD1784 ASSN STD SINGLE MATERIAL RESPONSE. 5 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.