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		                        | National Stock Number:
 5340-01-317-7591
 
 Federal Supply Class:
 5340
 
 National Item Identification Number:
 013177591
 
 Description:
 PLUG,EXPANSION
 
 Detail:
 A relatively thin metallic item, having a concave or cupped contour, designed to effect its own seal by compression against the circumference of a hole. It is used as a blowout plug in boilers, engines, and the like to relieve the pressure created by the expansion of fluids caused by heat or freezing.
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 Manufacturer Information:
 
 | MS9176-31 | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | 
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 Techincal Specification:
 
 | HEIGHT | 0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM |  | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5040 ASSN STD SINGLE MATERIAL RESPONSE |  | MATERIAL THICKNESS | 0.045 INCHES MINIMUM AND 0.055 INCHES MAXIMUM |  | MATERIAL | STEEL |  | OUTSIDE DIAMETER | 1.883 INCHES MINIMUM AND 1.887 INCHES MAXIMUM |  | RADIUS | 0.094 INCHES MINIMUM AND 0.125 INCHES MAXIMUM |  | SMALLEST DIAMETER | 1.865 INCHES MINIMUM AND 1.875 INCHES MAXIMUM |  | STYLE DESIGNATOR | TRAPPED CUP |  | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2485 ASSN STD SINGLE TREATMENT RESPONSE |  | SURFACE TREATMENT | OXIDE | 
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