Trans-Dapt Performance Products differential cover bolts are chome finished, and include washers. Packaged twelve per package.
 
Part # ProductThread SizeFinishLengthMaterialSize Media
9278 5/16"-18 x 3/4" Hex Head Differential Cover Bolts ChromeSteel5/16"-18 x 3/4"
Photo
$8.13
9279 3/8"-16 x 3/4" Hex Head Differential Cover Bolts ChromeSteel3/8"-16 x 3/4"
Photo
$11.41
9264 DIFFERENTIAL COVER BOLT SET; ALUMINUM DANA 60 12 BOLT DIFFERENTIAL COVERS 3/8"-161"Steel
$8.13
9227 DIFFERENTIAL COVER BOLT SET; CHROME GM 10 BOLT & DANA 44 DIFFERENTIAL COVERS 5/16"-183/4"Steel
$6.49
9282 DIFFERENTIAL COVER BOLT SET; ALUMINUM DANA 60 14 BOLT DIFFERENTIAL COVERS 3/8"-161"Steel
$9.77
 
http://hedman.com/images/ePIM/original/9278.jpg
http://hedman.com/images/ePIM/original/9279.jpg