The O-Ring, cataloged under National Stock Number 5331-01-711-1729, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Mcmaster-Carr Supply Co. Government technical data includes 3 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 | 5331-01-711-1729 |
| Primary Part Number | 9452K211 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| Outside Diameter | 3.895 INCHES NOMINAL IN |
| Supplementary Features | THICKNESS 0.21 INCHES ACTUAL IN |
| Center Hole Diameter | 3.475 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 |
|---|---|
| 9452K211 PRIMARY | Mcmaster-Carr Supply Co (USA) |
NSN 5331-01-711-1729 is a O-Ring, manufactured by Mcmaster-Carr Supply Co, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-711-1729 has 1 manufacturer part number on file: 9452K211 (Mcmaster-Carr Supply Co).
Key specifications for 9452K211: Outside Diameter: 3.895 INCHES NOMINAL IN; Supplementary Features: THICKNESS 0.21 INCHES ACTUAL IN; Center Hole Diameter: 3.475 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: OIL-RESISTANT BUNA-N O-RING. 3 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.