Earl's Straight Adapter Fitting -6 AN Male to 1/2-20 in Inverted Flare Male - Blue - Hardline 500020159 have 1/4"-20 thread and a

have 1/4"-20 thread and a built-in ALL18560 captured washer

GM Fullsize SUV 2015-21

1996-1999 GMC K2500 Suburban

Axle Housing Retainer Clamp

Earl's Straight Adapter Fitting -6 AN Male to 1/2-20 in Inverted Flare Male - Blue - Hardline 500020159 have 1/4"-20 thread and aEarl's offers the most complete line of adapter fittings in the industry. In addition to the standard range of AN adapters in both aluminum and steel, over the past 30 years Earl's has designed and manufactured a wide selection of special adapter fittings to meet the needs of the racing industry. These specials include metric to AN, inverted flare to AN and power steering fittings. NOTE: Image shows #EAR991941 Product Description: Adapter Straight 6