The O-Ring, cataloged under National Stock Number 5331-00-412-1166, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Sae International Dba Sae International. Government technical data includes 4 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-412-1166 |
| Primary Part Number | AS568B-020 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Cross-Sectional Height | 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN |
| Outside Diameter | 1.004 INCHES NOMINAL IN |
| Center Hole Diameter | 0.858 INCHES MINIMUM AND 0.870 INCHES MAXIMUM IN |
| Material | RUBBER |
| 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 |
|---|---|
| 23111-99-0338 | Rheinmetall Landsysteme Gmbh (DEU) |
| AS568B-020 PRIMARY | Sae International Dba Sae International (USA) |
| PRP020C0MP7507 | Trelleborg Sealing Solutions Germany Gmbh (DEU) |
| Reference | Meaning |
|---|---|
| AS568B-020 | 3/9 Design control — primary reference U.S. Government activity |
| 020-7507 | 5/9 Secondary reference Parker Hannifin Corporation Div O-Ring Division |
| 23111-99-0338 | 5/9 Secondary reference Henschel Wehrtechnik Gmbh |
NSN 5331-00-412-1166 is a O-Ring, manufactured by Sae International Dba Sae International, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-412-1166 has 3 manufacturer part numbers on file: 23111-99-0338 (Rheinmetall Landsysteme Gmbh), AS568B-020 (Sae International Dba Sae International), PRP020C0MP7507 (Trelleborg Sealing Solutions Germany Gmbh).
2 possible matches (shared part number, not a government interchangeability claim): 5331-00-439-1485, 5836-01-544-5463. Verify interchangeability with system specifications before substitution.
Key specifications for AS568B-020: Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN; Outside Diameter: 1.004 INCHES NOMINAL IN; Center Hole Diameter: 0.858 INCHES MINIMUM AND 0.870 INCHES MAXIMUM IN; Material: RUBBER. 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.