Allparts bulk pack of long machine head screws id: 47383 sku: GS0006B03 brandname: Allparts Details bulk pack of long machine head screws, black, 100pcs Tuning key screws (100 pcs.), #3 x 1/2" (12,7 mm) long, black. Related products GS0006B01 Allparts bulk pack of long machine head screws tapping screws GS0006B02 Allparts bulk pack of long machine head screws tapping screws