The Ring,retaining, cataloged under National Stock Number 5325-01-664-8945, 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 4 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-664-8945 |
| Primary Part Number | VHM-18-INX |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Smalley Steel Ring Co. |
| Status | ACTIVE |
| Usage Design | INTERNAL |
| Outside Diameter | 18.82 MILLIMETERS MINIMUM AND 19.15 MILLIMETERS MAXIMUM MM |
| Major Thickness | 0.42 MILLIMETERS MINIMUM AND 0.50 MILLIMETERS MAXIMUM MM |
| Material | STEEL COMP 1070 |
| 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 |
|---|---|
| 100405-9000-905 | Babcock Integrated Technology Limited (GBR) |
| VHM-18-INX PRIMARY | Smalley Steel Ring Co. (USA) |
NSN 5325-01-664-8945 is a Ring,retaining, manufactured by Smalley Steel Ring Co., classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-664-8945 has 2 manufacturer part numbers on file: 100405-9000-905 (Babcock Integrated Technology Limited), VHM-18-INX (Smalley Steel Ring Co.).
Key specifications for VHM-18-INX: Usage Design: INTERNAL; Outside Diameter: 18.82 MILLIMETERS MINIMUM AND 19.15 MILLIMETERS MAXIMUM MM; Major Thickness: 0.42 MILLIMETERS MINIMUM AND 0.50 MILLIMETERS MAXIMUM MM; Special Features: RING TYPE:INTERNAL RING,HOUSING DIAMETER:18.00MM GROVE DIAMETER 18.67MM TO 18.77MM, GROVE WIDTH:0.51MM TO 0.61MM,FREE OUTSIDE DIAMETER:18.49MM TO 19.15MM,RING THICKNESS:0.42MM TO 0.51MM,RING RADIAL WALL:1.04MM TO 1.24MM, NUMBER OF TURNS:1 MM. 4 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.