The O-Ring, cataloged under National Stock Number 5331-01-255-1847, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-255-1847 |
| Primary Part Number | 2730-145 ITEM 34CP |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Cross-Sectional Height | 0.250 INCHES NOMINAL IN |
| Criticality Code Justification | ZZZY |
| Center Hole Diameter | 0.938 INCHES NOMINAL IN |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE |
| Reference Number Differentiating Characteristics | CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 2730-145 ITEM 34CP | Naval Inventory Control Point Mechanicsburg (USA) |
| 501-4555457 ITEM 34CP | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 2730-145 ITEM 34 | 5/1 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
| 501-4555457 ITEM 34 | 3/1 Design control — primary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
NSN 5331-01-255-1847 is a O-Ring, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-255-1847 has 2 manufacturer part numbers on file: 2730-145 ITEM 34CP (Naval Inventory Control Point Mechanicsburg), 501-4555457 ITEM 34CP (Naval Inventory Control Point Mechanicsburg).
Key specifications for 2730-145 ITEM 34CP: Cross-Sectional Height: 0.250 INCHES NOMINAL IN; Criticality Code Justification: ZZZY; Center Hole Diameter: 0.938 INCHES NOMINAL IN; Material: PLASTIC POLYTETRAFLUOROETHYLENE. 5 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.