The Flange,pipe, cataloged under National Stock Number 4730-01-181-3620, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4730-01-181-3620 |
| Primary Part Number | MIL-F-18180/2 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| Status | CANCELLED |
| Raised Face Height | 0.250 INCHES NOMINAL IN |
| Socket Diameter | 1.950 INCHES NOMINAL IN |
| Bolt Hole Quantity | 4 |
| Style Designator | ROUND, ONE BOLT HOLE CIRCLE |
| Specification/standard Data | 81349-MIL-F-18180 GOVERNMENT SPECIFICATION |
| Maximum Operating Temp and Media for Which Designed | 850.0 FAHRENHEIT ANY ACCEPTABLE DEGF |
| Material Document and Classification | ASTM,A-105,GR 2 ASSN STD SINGLE MATERIAL RESPONSE |
| Material | STEEL |
| Bolt Hole Diameter | 0.750 INCHES NOMINAL IN |
| Face Seating Surface Condition | MACHINED |
| Nominal Pipe Size for Which Designed | 1.500 INCHES IN |
| Raised Face Diameter | 2.875 INCHES NOMINAL IN |
| Flange Diameter | 6.125 INCHES NOMINAL IN |
| Socket Depth | 0.625 INCHES NOMINAL IN |
| Thickness | 0.875 INCHES NOMINAL IN |
| Neck Height | 0.375 INCHES NOMINAL IN |
| Bolt Circle Diameter | 4.500 INCHES NOMINAL IN |
| Flange Section Style | RAISED FACE, SOCKET NECK |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| MIL-F-18180/2 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| M18180/2-56A01A | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| SW-7302 1 1/2IN | Flowserve Inc (USA) |
NSN 4730-01-181-3620 is a Flange,pipe, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 4730 (No Item Name Available). Status: cancelled.
NSN 4730-01-181-3620 has 3 cross-referenced part numbers: MIL-F-18180/2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M18180/2-56A01A (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), SW-7302 1 1/2IN (Flowserve Inc).
There are 4 known substitutes for 4730-01-181-3620: 4730-00-235-4078, 4730-01-022-5679, 4730-01-186-8701 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for MIL-F-18180/2: Raised Face Height: 0.250 INCHES NOMINAL IN; Socket Diameter: 1.950 INCHES NOMINAL IN; Bolt Hole Quantity: 4; Style Designator: ROUND, ONE BOLT HOLE CIRCLE. 18 total characteristics are documented in the Federal Logistics Information System.
NSN 4730-01-181-3620 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.