| 
                            
                                |  |  
                                |   |  
		                        | National Stock Number:
 4820-01-520-5399
 
 Federal Supply Class:
 4820
 
 National Item Identification Number:
 015205399
 
 Description:
 DISK,RUPTURABLE
 
 Detail:
 A THIN, CIRCULAR, METALLIC OR NONMETALLIC ITEM WITH A FLAT OR PREBULGED CROSS-SECTIONAL SHAPE, DESIGNED TO RUPTURE AT A PREDETERMINED PRESSURE TO PREVENT DAMAGE TO HYDRAULIC OR PNEUMATIC SYSTEMS, OR THE LIKE. IT MAY INCLUDE MULTIPLE PIECES, SUCH AS A RETAINER RING, DISK AND VACUUM SUPPORT. IT CAN BE USED INDEPENDENTLY OR AS A COMPONENT PART OF A HEAD, SAFETY, PRESSURE RELIEF. FOR ITEMS FURNISHED WITH A HOLDER, SEE HEAD AND DISK, SAFETY, PRESSURE RELIEF. FOR ITEMS WITHOUT A RUPTURE PRESSURE RATING, SEE DISK, SOLID, PLAIN. EXCLUDES DIAPHRAGM, VALVE, FLAT; DIAPHRAGM, VALVE, SPECIAL SHAPED; DISK, VALVE; AND INSULATOR, DISK.
 |  
		                        | 
 Manufacturer Information:
 
 | 026-34229 | 66935 | JOHNSON CONTROLS NAVY SYSTEMS, LLC |  | 026-34229-000 | 66935 | JOHNSON CONTROLS NAVY SYSTEMS, LLC | 
 |  
					            |  |  |