The Flange,pipe, cataloged under National Stock Number 4730-01-042-0681, 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 11 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-042-0681 |
| Primary Part Number | B165 A182 SCH80 CL2500 S1 |
| 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 | 5.250 INCHES NOMINAL IN |
| Nominal Pipe Size for Which Designed | 0.500 INCHES IN |
| Tube Outside Diameter for Which Designed | 0.840 INCHES NOMINAL IN |
| Flange Section Style | RAISED FACE, WELDING NECK |
| Style Designator | ROUND, NO BOLT HOLES |
| Neck Height | 0.370 INCHES NOMINAL IN |
| Material Document and Classification | ASTM A182,GRADE F11. ASSN STD SINGLE MATERIAL RESPONSE |
| Raised Face Diameter | 1.690 INCHES NOMINAL IN |
| Material | STEEL |
| Reference Number Differentiating Characteristics | QUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS |
| Thickness | 1.190 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 |
|---|---|
| B165 A182 SCH80 CL2500 S1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| ANSI B16.5 CL2500 SCH 80 | 3/1 Design control — primary reference U.S. Government activity |
| ANSI B16.5 CL2500 SCH 80S1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
NSN 4730-01-042-0681 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 4730-01-042-0681 has 1 manufacturer part number on file: B165 A182 SCH80 CL2500 S1 (Naval Inventory Control Point Mechanicsburg).
Key specifications for B165 A182 SCH80 CL2500 S1: Flange Diameter: 5.250 INCHES NOMINAL IN; Nominal Pipe Size for Which Designed: 0.500 INCHES IN; Tube Outside Diameter for Which Designed: 0.840 INCHES NOMINAL IN; Flange Section Style: RAISED FACE, WELDING NECK. 11 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.