The Flange,pipe, cataloged under National Stock Number 4730-01-046-6641, 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 Naval Inventory Control Point Mechanicsburg. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4730-01-046-6641 |
| Primary Part Number | ANSI-B16.5 CL1500 1/2INS1 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Flange Diameter | 4.750 INCHES NOMINAL IN |
| Face Seating Surface Condition | MACHINED |
| Nominal Pipe Size for Which Designed | 0.500 INCHES IN |
| Flange Section Style | RAISED FACE, WELDING NECK |
| Style Designator | ROUND, ONE BOLT HOLE CIRCLE |
| Bolt Hole Diameter | 0.880 INCHES NOMINAL IN |
| Neck Height | 1.500 INCHES NOMINAL IN |
| Material Document and Classification | ASTM-A182,GRADE F-11 ASSN STD SINGLE MATERIAL RESPONSE |
| Departure From Cited Document | QUALITY ASSURANCE TESTING IN ACCORDANCE WITH NAVY LEVEL 1 ASSURANCE GUIDE |
| Bolt Hole Quantity | 4 |
| Bolt Circle Diameter | 3.250 INCHES NOMINAL IN |
| Raised Face Diameter | 1.375 INCHES NOMINAL IN |
| Raised Face Height | 0.250 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING |
| Thickness | 0.880 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 | S |
| Part Number | Manufacturer |
|---|---|
| ANSI-B16.5 CL1500 1/2INS1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| ANSI-B16.5 CL1500 1/2IN | 3/1 Design control — primary reference U.S. Government activity |
NSN 4730-01-046-6641 is a Flange,pipe, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-046-6641 has 1 manufacturer part number on file: ANSI-B16.5 CL1500 1/2INS1 (Naval Inventory Control Point Mechanicsburg).
Key specifications for ANSI-B16.5 CL1500 1/2INS1: Flange Diameter: 4.750 INCHES NOMINAL IN; Face Seating Surface Condition: MACHINED; Nominal Pipe Size for Which Designed: 0.500 INCHES IN; Flange Section Style: RAISED FACE, WELDING NECK. 15 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.