The Packing Nut, cataloged under National Stock Number 4730-00-555-9404, 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 Schwitzer Engine Components a Household Intl Co. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4730-00-555-9404 |
| Primary Part Number | C4420 |
| Item Name | Packing Nut |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | Schwitzer Engine Components a Household Intl Co |
| Status | CANCELLED |
| Thread Class | 2A A |
| Hole Diameter | 0.203 INCHES NOMINAL IN |
| Thread Size | 2-1/4-16 |
| Style Designator | ROUND SLOTTED, EXTERNAL THREAD, BOSS |
| Major Unthreaded Outside Diameter | 2.241 INCHES MINIMUM AND 2.250 INCHES MAXIMUM IN |
| Smallest Inside Diameter | 1.547 INCHES NOMINAL IN |
| Screw Thread Location | EXTERNAL |
| Material | STEEL |
| Slot Width | 0.203 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Casehardening Indicator | NOT CASEHARDENED |
| Thread Length | 0.375 INCHES NOMINAL IN |
| Screw Thread Series Designator | UN |
| Hole or Slot Quantity | 2 |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| C4420 | Dresser, Llc (USA) |
| 861617 | Clark Equipment Co (USA) |
| 6208A | Hercules Engine Co Inc (USA) |
| C4420 PRIMARY | Schwitzer Engine Components a Household Intl Co (USA) |
| UC4420 | Dresser, Llc (USA) |
| 861617 | Dana Off Highway Products, Llc (USA) |
| 55AC4420 | Fwd Seagrave Holdings Lp (USA) |
| 203502 | Joy Global Underground Mining Llc (USA) |
| 6208A | Brinkley Technology Group Llc Dba Hercules Manufacturing (USA) |
| 07-861617 | Lift Parts Mfg Co Inc Div of Echlin Mfg Co the (USA) |
| 07-861617 | Tvh Parts Co. (USA) |
NSN 4730-00-555-9404 is a Packing Nut, manufactured by Schwitzer Engine Components a Household Intl Co, classified under FSC 4730 (No Item Name Available). Status: cancelled.
NSN 4730-00-555-9404 has 11 cross-referenced part numbers: C4420 (Dresser, Llc), 861617 (Clark Equipment Co), 6208A (Hercules Engine Co Inc), C4420 (Schwitzer Engine Components a Household Intl Co), UC4420 (Dresser, Llc) and 6 more.
There are 3 known substitutes for 4730-00-555-9404: 5365-00-946-8842, 2815-01-114-7399, 6130-01-500-5991. Verify interchangeability with system specifications before substitution.
Key specifications for C4420: Thread Class: 2A A; Hole Diameter: 0.203 INCHES NOMINAL IN; Thread Size: 2-1/4-16; Style Designator: ROUND SLOTTED, EXTERNAL THREAD, BOSS. 15 total characteristics are documented in the Federal Logistics Information System.
NSN 4730-00-555-9404 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.