The Ring,retaining, cataloged under National Stock Number 5325-01-133-0259, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-133-0259 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Status | ACTIVE |
| Material Hardness Rating | 71.0 ROCKWELL A MINIMUM AND 77.5 ROCKWELL A MAXIMUM |
| Usage Design | INTERNAL |
| Strength Rating | ERR-060 |
| Cross-Sectional Shape Style | DOUBLE OVAL |
| Outside Diameter | 2.467 INCHES MINIMUM AND 2.492 INCHES MAXIMUM IN |
| Nondefinitive Spec/std Data | B TYPE AND 2 CLASS |
| Major Thickness | 0.075 INCHES MINIMUM AND 0.081 INCHES MAXIMUM IN |
| Inside Diameter | 2.067 INCHES MINIMUM AND 2.092 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | SPECIAL FLAT |
| Material | STEEL COMP 1070 OR STEEL COMP 1572 OR STEEL COMP 1074 OR STEEL COMP 1075 OR STEEL COMP 1078 OR STEEL COMP 1080 OR STEEL COMP 1085 OR STEEL COMP 1086 OR STEEL COMP 1090 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| RRN-231 | 5/1 Secondary reference U.S. Government activity |
| 401674 | 5/1 Secondary reference Zf Active Safety and Electronics Us Llc Div Trw Commercial Steering Systems |
| 401502 | D/9 Drawing number reference only Zf Active Safety and Electronics Us Llc Div Trw Commercial Steering Systems |
| MIL-DTL-27426/4 | 4/1 Identification reference U.S. Government activity |
| PL44616-121H FIND NO. 21 | C/1 Advisory reference — outside the item-of-supply concept Curtiss-Wright Flow Control Corporation Dba Curtiss-Wright Flow Control Co Div Curtiss-Wright / Nu-Torque |
| M2742640137A | 2/2 Government specification standardization U.S. Government activity |
| MIL-DTL-27426 | 5/9 Secondary reference U.S. Government activity |
NSN 5325-01-133-0259 is a Ring,retaining, classified under FSC 5325, Fastening Devices. Status: active.
Key specifications for 5325-01-133-0259: Material Hardness Rating: 71.0 ROCKWELL A MINIMUM AND 77.5 ROCKWELL A MAXIMUM; Usage Design: INTERNAL; Strength Rating: ERR-060; Cross-Sectional Shape Style: DOUBLE OVAL. 11 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.