The Ring,retaining, cataloged under National Stock Number 5325-00-857-5033, is classified within Federal Supply Class 5325 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Spirolox Inc. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-857-5033 |
| Primary Part Number | RS-300-S |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — No Item Name Available |
| Manufacturer | Spirolox Inc |
| Status | ACTIVE |
| Material Document and Classification | MIL-S-5059, TYPE 302 MIL SPEC SINGLE MATERIAL RESPONSE |
| Surface Treatment | PASSIVATE |
| Material | STEEL COMP 302 |
| Material Hardness Rating | 40.0 ROCKWELL C MINIMUM AND 51.5 ROCKWELL C MAXIMUM |
| Cross-Sectional Shape Style | DOUBLE OVAL |
| Inside Diameter | 2.847 INCHES MINIMUM AND 2.877 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Outside Diameter | 3.171 INCHES MINIMUM AND 3.221 INCHES MAXIMUM IN |
| Major Thickness | 0.058 INCHES MINIMUM AND 0.064 INCHES MAXIMUM IN |
| Ring Style | SPIRAL |
| Usage Design | EXTERNAL |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| RS-300-S | Spirolox Inc (USA) |
| M2742610168D | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| MIL-DTL-27426 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| 7901/6 REV 1 ITEM 34 | Curtiss-Wright Flow Control Corporation Dba Curtiss-Wright Flow Control Co Div Curtiss-Wright / Nu-Torque (USA) |
| RS-300 | Zf Industrieantriebe Witten Gmbh (DEU) |
| WS-300-PA-S02 | Smalley Steel Ring Co. (USA) |
NSN 5325-00-857-5033 is a Ring,retaining, manufactured by Spirolox Inc, classified under FSC 5325 (No Item Name Available). Status: active.
NSN 5325-00-857-5033 has 6 cross-referenced part numbers: RS-300-S (Spirolox Inc), M2742610168D (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-27426 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 7901/6 REV 1 ITEM 34 (Curtiss-Wright Flow Control Corporation Dba Curtiss-Wright Flow Control Co Div Curtiss-Wright / Nu-Torque), RS-300 (Zf Industrieantriebe Witten Gmbh) and 1 more.
There are 3 known substitutes for 5325-00-857-5033: 6625-00-950-4477, 6645-01-378-2996, 5975-01-503-1557. Verify interchangeability with system specifications before substitution.
Key specifications for RS-300-S: Material Document and Classification: MIL-S-5059, TYPE 302 MIL SPEC SINGLE MATERIAL RESPONSE; Surface Treatment: PASSIVATE; Material: STEEL COMP 302; Material Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 51.5 ROCKWELL C MAXIMUM. 11 total characteristics are documented in the Federal Logistics Information System.