The Ring,retaining, cataloged under National Stock Number 5325-01-220-1322, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Solar Turbines Incorporated Dba Solar Turbines Incorporated. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-220-1322 |
| Primary Part Number | 918219C1 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Solar Turbines Incorporated Dba Solar Turbines Incorporated |
| Status | ACTIVE |
| Usage Design | INTERNAL |
| Surface Treatment Document and Classification | QQ-P-416, TYPE 1, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE |
| Strength Rating | ERR-060 |
| Material Document and Classification | FED STD 66, COMP 1070 FED STD 1ST MATERIAL RESPONSE AND FED STD 66, COMP 1072 FED STD 2ND MATERIAL RESPONSE AND FED STD 66, COMP 1074 FED STD 3RD MATERIAL RESPONSE AND FED STD 66, COMP 1075 FED STD 4TH MATERIAL RESPONSE AND FED STD 66, COMP 1078 FED STD 5TH MATERIAL RESPONSE AND FED STD 66, COMP 1080 FED STD 6TH MATERIAL RESPONSE AND FED STD 66, COMP 1084 FED STD 7TH MATERIAL RESPONSE AND FED STD 66, COMP 1085 FED STD 8TH MATERIAL RESPONSE AND FED STD 66, COMP 1086 FED STD 9TH MATERIAL RESPONSE AND FED STD 66, COMP 1090 FED STD 10TH MATERIAL RESPONSE |
| Cross-Sectional Shape Style | DOUBLE OVAL |
| Outside Diameter | 5.703 INCHES MINIMUM AND 5.748 INCHES MAXIMUM IN |
| Major Thickness | 0.068 INCHES MINIMUM AND 0.076 INCHES MAXIMUM IN |
| Inside Diameter | 5.203 INCHES MINIMUM AND 5.248 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | SPECIAL FLAT |
| Surface Treatment | CADMIUM |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 918219C1 PRIMARY | Solar Turbines Incorporated Dba Solar Turbines Incorporated (USA) |
| Reference | Meaning |
|---|---|
| 918219C1 | 5/9 Secondary reference Rtx Corporation Div Pratt & Whitney |
| MIL-DTL-27426 | 4/1 Identification reference U.S. Government activity |
NSN 5325-01-220-1322 is a Ring,retaining, manufactured by Solar Turbines Incorporated Dba Solar Turbines Incorporated, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-220-1322 has 1 manufacturer part number on file: 918219C1 (Solar Turbines Incorporated Dba Solar Turbines Incorporated).
Key specifications for 918219C1: Usage Design: INTERNAL; Surface Treatment Document and Classification: QQ-P-416, TYPE 1, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE; Strength Rating: ERR-060; Material Document and Classification: FED STD 66, COMP 1070 FED STD 1ST MATERIAL RESPONSE AND FED STD 66, COMP 1072 FED STD 2ND MATERIAL RESPONSE AND FED STD 66, COMP 1074 FED STD 3RD MATERIAL RESPONSE AND FED STD 66, COMP 1075 FED STD 4TH MATERIAL RESPONSE AND FED STD 66, COMP 1078 FED STD 5TH MATERIAL RESPONSE AND FED STD 66, COMP 1080 FED STD 6TH MATERIAL RESPONSE AND FED STD 66, COMP 1084 FED STD 7TH MATERIAL RESPONSE AND FED STD 66, COMP 1085 FED STD 8TH MATERIAL RESPONSE AND FED STD 66, COMP 1086 FED STD 9TH MATERIAL RESPONSE AND FED STD 66, COMP 1090 FED STD 10TH MATERIAL RESPONSE. 12 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.