The Flange,pipe, cataloged under National Stock Number 4730-01-641-2636, 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 9 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-641-2636 |
| Primary Part Number | ASTM A105, PIPE FLANGEL1 |
| 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 | 123.8 MILLIMETERS NOMINAL MM |
| Nominal Pipe Size for Which Designed | 1.000 INCHES IN |
| Criticality Code Justification | ZZZY |
| Style Designator | ROUND, NO BOLT HOLES |
| Bolt Hole Diameter | 19.0 MILLIMETERS NOMINAL MM |
| Bolt Hole Quantity | 4 |
| Bore Diameter | 0.957 INCHES NOMINAL IN |
| Material | STEEL |
| Reference Number Differentiating Characteristics | MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS |
| 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 |
|---|---|
| ASTM A105, PIPE FLANGEL1 | Naval Inventory Control Point Mechanicsburg (USA) |
| ANSI B16.5,1 IN., SCHEDULE 80L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 600 PSI,.957 BORE, SOCKET WELDL1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| ASTM A105, PIPE FLANGE | 5/1 Secondary reference U.S. Government activity |
| ANSI B16.5,1 IN., SCHEDULE 80 | 3/1 Design control — primary reference U.S. Government activity |
| 600 PSI,.957 BORE, SOCKET WELD | 5/1 Secondary reference U.S. Government activity |
NSN 4730-01-641-2636 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 4730-01-641-2636 has 3 manufacturer part numbers on file: ASTM A105, PIPE FLANGEL1 (Naval Inventory Control Point Mechanicsburg), ANSI B16.5,1 IN., SCHEDULE 80L1 (Naval Inventory Control Point Mechanicsburg), 600 PSI,.957 BORE, SOCKET WELDL1 (Naval Inventory Control Point Mechanicsburg).
Key specifications for ASTM A105, PIPE FLANGEL1: Flange Diameter: 123.8 MILLIMETERS NOMINAL MM; Nominal Pipe Size for Which Designed: 1.000 INCHES IN; Criticality Code Justification: ZZZY; Style Designator: ROUND, NO BOLT HOLES. 9 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.