THIS SPECIFICATION IS INTENDED TO ESTABLISH AND CONTROL THE QUALITY OF BLIND RIVETS FOR USE IN STRUCTURAL APPLICATIONS ON ITEMS AND COMPONENTS OF MILITARY EQUIPMENT.

THE SPECIFICATION ESTABLISHES THE REQUIREMENTS FOR PROCUREMENT OF
SELF-PLUGGING BLIND RIVETS, WITH A MECHANICALLY LOCKED SOLID
SPINDLE, WHICH CAN BE INSTALLED IN ASSEMBLIES OR CONSTRUCTION.  THESE
BLIND RIVETS ARE INTENDED FOR USE IN AIRCRAFT STRUCTURAL OR SIMILAR
APPLICATIONS IN BOTH THICK AND THIN SHEETS.  THE BULBED BLIND HEAD
CONFIGURATION MAKES THESE RIVETS ESPECIALLY SUITED FOR THIN SHEET
OR DOUBLE DIMPLED APPLICATIONS.

STYLES, CLASSES, AND CODES - RIVETS SHALL BE FURNISHED IN THE FOLLOWING
STYLES, CLASSES AND CODES.

STYLE 'A' NOMINAL SHANK DIAMETER

CLASS 1 - PROTRUDING HEAD RIVETS (MS20470)
     CODE B - 5056 ALUMINUM ALLOY SLEEVE-ALLOY STEEL SPINDLE
     CODE E - 5056 ALUMINUM ALLOY SLEEVE-CRES SPINDLE

CLASS 2 - 100 DEGREE FLUSH HEAD (MS20426)
     CODE B - 5056 ALUMINUM ALLOY SLEEVE-ALLOY STEEL SPINDLE
     CODE E - 5056 ALUMINUM ALLOY SLEEVE-CRES SPINDLE

CLASS 3 - 100 DEGREE FLUSH SHEAR HEAD (NAS1097)
     CODE B - 5056 ALUMINUM ALLOY SLEEVE-ALLOY STEEL SPINDLE
     CODE E - 5056 ALUMINUM ALLOY SLEEVE-CRES SPINDLE

STYLE 'B' 1/64" OVERSIZE SHANK DIAMETER

CLASS 1 - PROTRUDING HEAD RIVETS (MS20470)
     CODE B - 5056 ALUMINUM ALLOY SLEEVE-ALLOY STEEL SPINDLE
     CODE E - 5056 ALUMINUM ALLOY SLEEVE-CRES SPINDLE

CLASS 2 - 100 DEGREE FLUSH HEAD (MS20426)
     CODE B - 5056 ALUMINUM ALLOY SLEEVE-ALLOY STEEL SPINDLE
     CODE E - 5056 ALUMINUM ALLOY SLEEVE-CRES SPINDLE

CLASS 4 - FLANGED DOME HEAD
     CODE B - 5056 ALUMINUM ALLOY SLEEVE-ALLOY STEEL SPINDLE
     CODE E - 5056 ALUMINUM ALLOY SLEEVE-CRES SPINDLE