1/4"-20 x 3/4" 6-Lobe Drive Pan Head Grade 18-8 Stainless Steel Machine Screw / FASTENER LENGTH: 0.75 INCHES NOMINAL HEAD STYLE: A23 PAN NOMINAL THREAD DIAMETER: 0.25 INCHES THREAD QUANTITY PER INCH: 20 PART NAME ASSIGNED BY CONTROLLING AGENCY: 6-LOBE DRIVE PAN HEAD MACHINE SCREW SCREW MATERIAL: STEEL CORROSION RESISTING SPECIAL FEATURES: DRIVE 6-LOBE, GRADE 18-8