The O-Ring, cataloged under National Stock Number 5331-01-520-5996, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Hiab Limited Div Government Business Operations. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-520-5996 |
| Primary Part Number | 993-8788 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Hiab Limited Div Government Business Operations |
| Status | ACTIVE |
| Cross-Sectional Height | 2.0 MILLIMETERS NOMINAL MM |
| Color | NATURAL |
| Center Hole Diameter | 3.0 MILLIMETERS NOMINAL MM |
| Material | PLASTIC POLYESTER |
| 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 |
|---|---|
| 993-8788 | Hiab Limited Div Government Business Operations (GBR) |
| Reference | Meaning |
|---|---|
| 993-8788 | 3/9 Design control — primary reference Hiab Usa Inc |
NSN 5331-01-520-5996 is a O-Ring, manufactured by Hiab Limited Div Government Business Operations, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-520-5996 has 1 manufacturer part number on file: 993-8788 (Hiab Limited Div Government Business Operations).
Key specifications for 993-8788: Cross-Sectional Height: 2.0 MILLIMETERS NOMINAL MM; Color: NATURAL; Center Hole Diameter: 3.0 MILLIMETERS NOMINAL MM; Part Name Assigned by Controlling Agency: BACK-UP O-RING. 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.