The Ring,retaining, cataloged under National Stock Number 5325-00-367-5435, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Smalley Steel Ring Co.. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5325-00-367-5435 |
| Primary Part Number | 9M188-90 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Smalley Steel Ring Co. |
| Status | ACTIVE |
| Usage Design | INTERNAL |
| Strength Rating | ERR-060 |
| Material Document and Classification | SAE 1070 THRU 1090 ASSN STD SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | DOUBLE OVAL |
| Outside Diameter | 0.957 INCHES MINIMUM AND 0.970 INCHES MAXIMUM IN |
| Major Thickness | 0.042 INCHES MINIMUM AND 0.046 INCHES MAXIMUM IN |
| Inside Diameter | 0.827 INCHES MINIMUM AND 0.840 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | SPIRAL |
| Surface Treatment | CADMIUM AND CHROMATE |
| Material | STEEL |
| 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 |
|---|---|
| 9M188-90 | Smalley Steel Ring Co. (USA) |
| 9M188-90 | Sealtite Corp Div Sealtite Corporation (USA) |
| Reference | Meaning |
|---|---|
| 9M188-90 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| RRT90CDM9 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5325-00-367-5435 is a Ring,retaining, manufactured by Smalley Steel Ring Co., classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-367-5435 has 2 manufacturer part numbers on file: 9M188-90 (Smalley Steel Ring Co.), 9M188-90 (Sealtite Corp Div Sealtite Corporation).
Key specifications for 9M188-90: Usage Design: INTERNAL; Strength Rating: ERR-060; Material Document and Classification: SAE 1070 THRU 1090 ASSN STD SINGLE MATERIAL RESPONSE; 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.