#10-32 x 1/2" Slotted Drive Round Head Grade 18-8 Stainless Steel Machine Screw / THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 0.500 INCHES NOMINAL FASTENER LENGTH: 0.500 INCHES NOMINAL HEAD STYLE: A28 ROUND HEAD DIAMETER: 0.357 INCHES MINIMUM AND 0.373 INCHES MAXIMUM HEAD HEIGHT: 0.122 INCHES MINIMUM AND 0.133 INCHES MAXIMUM INTERNAL DRIVE STYLE: B10 SLOT NOMINAL THREAD DIAMETER: 0.190 INCHES THREAD QUANTITY PER INCH: 32 SCREW MATERIAL: COPPER ALLOY THREAD SERIES DESIGNATOR: UNF