The O-Ring, cataloged under National Stock Number 5331-01-381-0071, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-381-0071 |
| Primary Part Number | MS28775-213CP |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-Ring |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Departure From Cited Document | CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D |
| Criticality Code Justification | ZZZW |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| MS28775-213CP | Naval Inventory Control Point Mechanicsburg (USA) |
| MS28775-213 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| MS28775-213CP | Sae International Dba Sae International (USA) |
| MS28775-213 | Sae International Dba Sae International (USA) |
| MS28775-213 | Society of Automotive Engineers Inc (USA) |
| SAE-AS28775 | Sae International Dba Sae International (USA) |
NSN 5331-01-381-0071 is a O-Ring, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5331 (O-Ring). Status: active.
NSN 5331-01-381-0071 has 6 cross-referenced part numbers: MS28775-213CP (Naval Inventory Control Point Mechanicsburg), MS28775-213 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MS28775-213CP (Sae International Dba Sae International), MS28775-213 (Sae International Dba Sae International), MS28775-213 (Society of Automotive Engineers Inc) and 1 more.
There are 5 known substitutes for 5331-01-381-0071: 5331-00-584-1038, 5331-01-213-6128, 5331-01-227-9116 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for MS28775-213CP: End Item Identification: VALVE RELIEF .75IPS; Departure From Cited Document: CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D; Criticality Code Justification: ZZZW. 3 total characteristics are documented in the Federal Logistics Information System.