The O-Ring, cataloged under National Stock Number 5331-01-652-3781, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Parker-Hannifin Corporation Dba Pneutronics Div Chomerics Division. Government technical data includes 2 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-652-3781 |
| Primary Part Number | 1.00421E+12 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics Div Chomerics Division |
| Status | ACTIVE |
| Outside Diameter | 0.020 INCHES NOMINAL IN |
| Center Hole Diameter | 0.053 INCHES NOMINAL IN |
| 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 |
|---|---|
| 1.00421E+12 PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Chomerics Division (USA) |
NSN 5331-01-652-3781 is a O-Ring, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Chomerics Division, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-652-3781 has 1 manufacturer part number on file: 1.00421E+12 (Parker-Hannifin Corporation Dba Pneutronics Div Chomerics Division).
Key specifications for 1.00421E+12: Outside Diameter: 0.020 INCHES NOMINAL IN; Center Hole Diameter: 0.053 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: O-RING, HOLLOW-O-SHAPE. 2 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.