The Packing Nut, cataloged under National Stock Number 4730-00-274-9209, 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 Naval Ship Systems Command. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 50 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-274-9209 |
| Primary Part Number | AR13S4601-257520ALT2PC479 |
| Item Name | Packing Nut |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | Naval Ship Systems Command |
| Status | ACTIVE |
| Thread Direction | RIGHT-HAND |
| Width Across Flats | 0.750 INCHES NOMINAL IN |
| Screw Thread Series Designator | UNF |
| Thread Size | 0.750-16 |
| Seat Angle in Deg | 65.0 |
| Casehardening Indicator | NOT CASEHARDENED |
| Style Designator | HEXAGON, EXTERNAL THREAD, INVERTED FLARE |
| Screw Thread Location | EXTERNAL |
| Smallest Inside Diameter | 0.266 INCHES NOMINAL IN |
| Material Hardness Rating | 33.0 ROCKWELL C NOMINAL |
| Thread Length | 0.313 INCHES NOMINAL IN |
| Material | STEEL COMP 303 |
| Thread Class | 3A A |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| AR13S4601-257520ALT2PC479 PRIMARY | Naval Ship Systems Command (USA) |
| DD423S47-0123PC692 PRIMARY | Naval Ship Systems Command (USA) |
| DD445S4700-353PC692 PRIMARY | Naval Ship Systems Command (USA) |
| DD423S47-0103PC692 PRIMARY | Naval Ship Systems Command (USA) |
| CL40S53-013PC315 PRIMARY | Naval Ship Systems Command (USA) |
| AR13S4601-257512ALT1PC479 PRIMARY | Naval Ship Systems Command (USA) |
| DD445S4700-347PC692 PRIMARY | Naval Ship Systems Command (USA) |
| DD423S47-0124PC692 PRIMARY | Naval Ship Systems Command (USA) |
| CL55S47-39PC657 PRIMARY | Naval Ship Systems Command (USA) |
| BB58S47-023PC657 PRIMARY | Naval Ship Systems Command (USA) |
| 43B01597PC692 PRIMARY | Naval Ship Systems Command (USA) |
| CL40S53-09PC315 PRIMARY | Naval Ship Systems Command (USA) |
| CL55S47-33PC657 PRIMARY | Naval Ship Systems Command (USA) |
| CV9S4700-36PC657 PRIMARY | Naval Ship Systems Command (USA) |
| CL55S47-25PC657 PRIMARY | Naval Ship Systems Command (USA) |
| 43B01606PC692 PRIMARY | Naval Ship Systems Command (USA) |
| AD26S4601-257987ALT2PC479 PRIMARY | Naval Ship Systems Command (USA) |
| CL55S47-40PC657 PRIMARY | Naval Ship Systems Command (USA) |
| 43B01604PC692 PRIMARY | Naval Ship Systems Command (USA) |
| AD26S4601-258003ALT2PC479 PRIMARY | Naval Ship Systems Command (USA) |
NSN 4730-00-274-9209 is a Packing Nut, manufactured by Naval Ship Systems Command, classified under FSC 4730 (No Item Name Available). Status: active.
NSN 4730-00-274-9209 has 50 cross-referenced part numbers: AR13S4601-257520ALT2PC479 (Naval Ship Systems Command), DD423S47-0123PC692 (Naval Ship Systems Command), DD445S4700-353PC692 (Naval Ship Systems Command), DD423S47-0103PC692 (Naval Ship Systems Command), CL40S53-013PC315 (Naval Ship Systems Command) and 45 more.
There are 12 known substitutes for 4730-00-274-9209: 2540-00-123-7216, 5133-00-228-1344, 3120-00-358-2258 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for AR13S4601-257520ALT2PC479: Overall Length: 0.750 INCHES NOMINAL IN; Thread Direction: RIGHT-HAND; Width Across Flats: 0.750 INCHES NOMINAL IN; Screw Thread Series Designator: UNF. 14 total characteristics are documented in the Federal Logistics Information System.