The O-Ring, cataloged under National Stock Number 5331-00-601-8156, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Div Epd. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-601-8156 |
| Primary Part Number | 20A11CMS1024 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| Status | ACTIVE |
| Cross-Sectional Height | 0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN |
| Center Hole Diameter | 27.445 INCHES MINIMUM AND 27.505 INCHES MAXIMUM IN |
| Material | RUBBER SYNTHETIC |
| 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 |
|---|---|
| W248966PC456D | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| 20A11CMS1024 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| 20A11XMS1024 | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| Reference | Meaning |
|---|---|
| W248966PC456D | 5/9 Secondary reference U.S. Government activity |
| 20A11XMS1024 | 5/9 Secondary reference U.S. Government activity |
| 20A11CMS1024 | 3/9 Design control — primary reference U.S. Government activity |
| 20A11-X-MS1024 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5331-00-601-8156 is a O-Ring, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-601-8156 has 3 manufacturer part numbers on file: W248966PC456D (Curtiss-Wright Electro-Mechanical Corporation Div Epd), 20A11CMS1024 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), 20A11XMS1024 (Curtiss-Wright Electro-Mechanical Corporation Div Epd).
Key specifications for 20A11CMS1024: Cross-Sectional Height: 0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN; Center Hole Diameter: 27.445 INCHES MINIMUM AND 27.505 INCHES MAXIMUM IN; Material: RUBBER SYNTHETIC. 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.