The O-Ring, cataloged under National Stock Number 5331-01-561-7787, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is The Hiller Companies, Llc Dba Hiller Systems Inc. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-561-7787 |
| Primary Part Number | HSHRFS1001-3-474000-5030RN |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | The Hiller Companies, Llc Dba Hiller Systems Inc |
| Status | ACTIVE |
| Temp Rating | 212.0 FAHRENHEIT DEGF |
| Cross-Sectional Height | 0.125 INCHES NOMINAL IN |
| Center Hole Diameter | 1.438 INCHES NOMINAL IN |
| Material | RUBBER BUTADIENE NITRILE |
| 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 |
|---|---|
| HSHRFS1001-3-474000-5030RN PRIMARY | The Hiller Companies, Llc Dba Hiller Systems Inc (USA) |
NSN 5331-01-561-7787 is a O-Ring, manufactured by The Hiller Companies, Llc Dba Hiller Systems Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-561-7787 has 1 manufacturer part number on file: HSHRFS1001-3-474000-5030RN (The Hiller Companies, Llc Dba Hiller Systems Inc).
Key specifications for HSHRFS1001-3-474000-5030RN: Temp Rating: 212.0 FAHRENHEIT DEGF; Cross-Sectional Height: 0.125 INCHES NOMINAL IN; Special Features: OD 1.6875; Center Hole Diameter: 1.438 INCHES NOMINAL IN. 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.