1/4"-28 x 2-1/2" Grade 8 Yellow Zinc Finish Hex Cap Screw / THREAD DIRECTION: RIGHT-HAND FASTENER LENGTH: 2.5 INCHES NOMINAL HEAD STYLE: C1 HEXAGON NOMINAL THREAD DIAMETER: 0.25 INCHES THREAD QUANTITY PER INCH: 28 PART NAME ASSIGNED BY CONTROLLING AGENCY: HEX HEAD CAP SCREW MATERIAL: STEEL OVERALL SURFACE TREATMENT: ZINC OVERALL