The Ring Set,piston, cataloged under National Stock Number 2805-00-383-8991, is classified within Federal Supply Class 2805 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is Spirolox Inc. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 7 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 | 2805-00-383-8991 |
| Primary Part Number | 73S03 |
| Item Name | Ring Set,piston |
| FSC / FSG | 2805 / 28 — No Item Name Available |
| Manufacturer | Spirolox Inc |
| Status | ACTIVE |
| Ring Set Component Parts | COMPRESSION RING,113A32,44940,1; COMPRESSION RING,113A33,44940,2; OIL RING,113A31,44940,1 |
| Standard Bore Diameter | 3.000 INCHES IN |
| Piston Accommodation Quantity | 1 |
| FSC Application Data | ENGINE,GASOLINE,NONAIRCRAFT |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 8-5172S1 | Hastings Manufacturing Co Div Hastings Manufacturing Company (USA) |
| 73S03 PRIMARY | Spirolox Inc (USA) |
| 113-6 | Cummins Power Generation Inc. (USA) |
| 113-0039 | Cummins Power Generation Inc. (USA) |
| RS1012 | Mcquay-Norris Inc Oem Div an Skf Industries Co |
| 113-39 | Cummins Power Generation Inc. (USA) |
| 7859 | Dana Corp Engine Products Div (USA) |
| 7203 | Gould Inc Clevite Engine Parts Div (USA) |
| 7203 | Muskegon Piston Ring Co Muskegon Products Div (USA) |
NSN 2805-00-383-8991 is a Ring Set,piston, manufactured by Spirolox Inc, classified under FSC 2805 (No Item Name Available). Status: active.
NSN 2805-00-383-8991 has 9 cross-referenced part numbers: 8-5172S1 (Hastings Manufacturing Co Div Hastings Manufacturing Company), 73S03 (Spirolox Inc), 113-6 (Cummins Power Generation Inc.), 113-0039 (Cummins Power Generation Inc.), RS1012 (Mcquay-Norris Inc Oem Div an Skf Industries Co) and 4 more.
There are 12 known substitutes for 2805-00-383-8991: 5935-00-056-7568, 4730-00-786-3972, 5330-00-838-9347 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 73S03: Ring Set Component Parts: COMPRESSION RING,113A32,44940,1; COMPRESSION RING,113A33,44940,2; OIL RING,113A31,44940,1; Standard Bore Diameter: 3.000 INCHES IN; Piston Accommodation Quantity: 1; FSC Application Data: ENGINE,GASOLINE,NONAIRCRAFT. 4 total characteristics are documented in the Federal Logistics Information System.