The O-Ring, cataloged under National Stock Number 5331-00-958-4591, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Hutchinson Seal De Mexico Stillman Seal Division Div Stillman Seal,jpr,espa. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-958-4591 |
| Primary Part Number | A28TH1058 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Hutchinson Seal De Mexico Stillman Seal Division Div Stillman Seal,jpr,espa |
| Status | ACTIVE |
| Cross-Sectional Height | 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN |
| Center Hole Diameter | 1.358 INCHES MINIMUM AND 1.370 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 |
|---|---|
| A28TH1058 | Hutchinson Seal De Mexico Stillman Seal Division Div Stillman Seal,jpr,espa (MEX) |
| Reference | Meaning |
|---|---|
| A28TH1058 | 3/2 Design control — primary reference U.S. Government activity |
| 10117132 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| HS3113D28 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
| HS3113D28 | 7/2 Vendor item drawing reference The Boeing Company |
NSN 5331-00-958-4591 is a O-Ring, manufactured by Hutchinson Seal De Mexico Stillman Seal Division Div Stillman Seal,jpr,espa, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-958-4591 has 1 manufacturer part number on file: A28TH1058 (Hutchinson Seal De Mexico Stillman Seal Division Div Stillman Seal,jpr,espa).
Key specifications for A28TH1058: Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN; Center Hole Diameter: 1.358 INCHES MINIMUM AND 1.370 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.