The O-Ring, cataloged under National Stock Number 5331-01-287-4820, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Vacco Industries. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-287-4820 |
| Primary Part Number | A180-227 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-Ring |
| Manufacturer | Vacco Industries |
| Status | ACTIVE |
| Criticality Code Justification | ZZZW |
| Departure From Cited Document | CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Center Hole Diameter | 2.099 INCHES MINIMUM AND 2.119 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| A180-227 | Vacco Industries (USA) |
| MS28775-227CP | Naval Inventory Control Point Mechanicsburg (USA) |
| AS28775 | Sae International Dba Sae International (USA) |
| MS28775-227 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| MS28775-227CP | Sae International Dba Sae International (USA) |
| A180-227CP | Naval Inventory Control Point Mechanicsburg (USA) |
| 53A-00-149-2 | Zf Industrieantriebe Witten Gmbh (DEU) |
| MIL-P-25732 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| AS28775 | Society of Automotive Engineers Inc (USA) |
| MS28775-227 | Society of Automotive Engineers Inc (USA) |
| SAE-AS28775 | Sae International Dba Sae International (USA) |
NSN 5331-01-287-4820 is a O-Ring, manufactured by Vacco Industries, classified under FSC 5331 (O-Ring). Status: active.
NSN 5331-01-287-4820 has 11 cross-referenced part numbers: A180-227 (Vacco Industries), MS28775-227CP (Naval Inventory Control Point Mechanicsburg), AS28775 (Sae International Dba Sae International), MS28775-227 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MS28775-227CP (Sae International Dba Sae International) and 6 more.
There are 2 known substitutes for 5331-01-287-4820: 5331-00-576-9731, 5330-01-230-8766. Verify interchangeability with system specifications before substitution.
Key specifications for A180-227: Criticality Code Justification: ZZZW; Departure From Cited Document: CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D; End Item Identification: 7 VL MANIFOLD-6000PSI; Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN. 5 total characteristics are documented in the Federal Logistics Information System.