The Flange,pipe, cataloged under National Stock Number 4730-01-045-1790, 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-045-1790 |
| Primary Part Number | ANSI B16.5 CL1500 SZ 5INS1 |
| 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 | 14.750 INCHES NOMINAL IN |
| Face Seating Surface Condition | MACHINED |
| Nominal Pipe Size for Which Designed | 5.000 INCHES IN |
| Flange Section Style | RAISED FACE, WELDING NECK |
| Style Designator | ROUND, ONE BOLT HOLE CIRCLE |
| Bolt Hole Diameter | 1.625 INCHES NOMINAL IN |
| Neck Height | 3.240 INCHES NOMINAL IN |
| Material Document and Classification | ASTM-A182,GRADE F-11 ASSN STD SINGLE MATERIAL RESPONSE |
| Departure From Cited Document | MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS THAT ARE UNIQUE TO FOSSIL FUEL POWERED SURFACE SHIPS MAIN STEAM, CATAPULT STEAM, AND HIGH PRESSURE STEAM DRAIN SYSTEMS |
| Bolt Hole Quantity | 8 |
| Bolt Circle Diameter | 11.500 INCHES NOMINAL IN |
| Raised Face Diameter | 7.312 INCHES NOMINAL IN |
| Raised Face Height | 0.250 INCHES NOMINAL IN |
| Material | STEEL |
| Thickness | 2.880 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 SZ 5INS1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| ASTM-A182, GRADE F11, CL 2 OR 3 | 5/1 Secondary reference U.S. Government activity |
| ANSI B16.5 CL1500 SZ 5IN | 3/1 Design control — primary reference U.S. Government activity |
| ASTM-A182 GR F11 | 5/1 Secondary reference U.S. Government activity |
| ASTM-A182 GR F11S1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
NSN 4730-01-045-1790 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 4730-01-045-1790 has 1 manufacturer part number on file: ANSI B16.5 CL1500 SZ 5INS1 (Naval Inventory Control Point Mechanicsburg).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-048-4397. Verify interchangeability with system specifications before substitution.
Key specifications for ANSI B16.5 CL1500 SZ 5INS1: Flange Diameter: 14.750 INCHES NOMINAL IN; Face Seating Surface Condition: MACHINED; Nominal Pipe Size for Which Designed: 5.000 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.