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The aircraft extension bits are made from heavy duty construction for drilling holes in hard to reach places
3/16 Inch Dia x 3/4 Inch Soft Alloy Aluminum Brazier Head Solid Rivet
Split-point design gives accurate starting and is self centering eliminating the need for the use of a center punch
They also provide less drilling depth
5/16-18 x 2 Inch Coarse Hot Dipped Galvanized Low Carbon Steel Hex Head Bolt Best Seller The aircraft extension bits areCap Screws are proportioned and toleranced to assure full and proper loading when assembled into a tapped hole. A washer face is provided under the head to provide a bearing surface when tightened. this feature ensures proper fit up into tapped holes without counterboring. Cap screws feature a chamfered end to aid in inserting into a tapped hole. Hex head cap screws are available in a variety of material grades including: Grade 2 Grade 5 Grade 8 and