#6-32 x 1/4" Phillips Pan Head Zinc Finish Steel Internal Tooth Washer SEMS Machine Screw / THREAD CLASS: 2A THREAD DIRECTION: RIGHT-HAND FASTENER LENGTH: 0.250 INCHES NOMINAL HEAD STYLE: C32 PAN HEAD DIAMETER: 0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM HEAD HEIGHT: 0.087 INCHES MINIMUM AND 0.097 INCHES MAXIMUM WASHER QUANTITY: 1 INTERNAL DRIVE STYLE: D1 CROSS RECESS TYPE 1 END ITEM IDENTIFICATION: 01-615-9020 NOMINAL THREAD DIAMETER: 0.138 INCHES THREAD QUANTITY PER INCH: 32 PRIMARY WASHER OUTSIDE DIAMETER: 0.278 INCHES MINIMUM AND 0.288 INCHES MAXIMUM PRIMARY WASHER STYLE: G2 FLAT INTERNAL TEETH PRIMARY WASHER MATERIAL THICKNESS: 0.016 INCHES MINIMUM AND 0.022 INCHES MAXIMUM SPECIAL FEATURES: THREAD REQUIRMENTS: ASME B1.1 UNC & UNF MATERIAL: STEEL PRIMARY WASHER MATERIAL: STEEL FASTENER THREAD SERIES DESIGNATOR: UNC