The O-Ring, cataloged under National Stock Number 5331-01-503-6256, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Security Engineered Machinery Co., Inc.. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-503-6256 |
| Primary Part Number | SH1.400.020.950 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Security Engineered Machinery Co., Inc. |
| Status | ACTIVE |
| Cross-Sectional Height | 2.000 MILLIMETERS NOMINAL MM |
| Center Hole Diameter | 10.000 MILLIMETERS NOMINAL MM |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| 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 |
|---|---|
| 1.400.020.950 | Security Engineered Machinery Co., Inc. (USA) |
| SH1.400.020.950 PRIMARY | Security Engineered Machinery Co., Inc. (USA) |
NSN 5331-01-503-6256 is a O-Ring, manufactured by Security Engineered Machinery Co., Inc., classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-503-6256 has 2 manufacturer part numbers on file: 1.400.020.950 (Security Engineered Machinery Co., Inc.), SH1.400.020.950 (Security Engineered Machinery Co., Inc.).
Key specifications for SH1.400.020.950: Cross-Sectional Height: 2.000 MILLIMETERS NOMINAL MM; Center Hole Diameter: 10.000 MILLIMETERS NOMINAL MM; End Item Identification: SHREDER MODEL 391; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR. 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.