3/8"-16 x 3-1/2" ASTM F593 18-8 Stainless Steel Hex Cap Screw / THREAD CLASS: 2A THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 1.00 INCHES NOMINAL FASTENER LENGTH: 3.44 INCHES MINIMUM AND 3.50 INCHES MAXIMUM HEAD STYLE: C1 HEXAGON HEAD HEIGHT: 0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM WIDTH BETWEEN FLATS: 0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM END ITEM IDENTIFICATION: 2320-01-528-6294 NOMINAL THREAD DIAMETER: 0.375 INCHES THREAD QUANTITY PER INCH: 16 MATERIAL: STEEL OVERALL THREAD SERIES DESIGNATOR: UNC