12 Hole 15 Notch General Purpose, Bolt Hole Standard Block Copper         

Material: Copper for special alloy request by mail

Geometry: Block Sizes: 0.25" thick x 2.5" x 6.0" 

Holes: 

• 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 1/2", 9/16", 5/8" and 3/4" diameter 

Surface Notches: 

• Qty 3 @ .008", .020" and .040" deep x 1.0" long 

Notch Width (All): .004" (± .001) 

Hole Notch Configurations: 

• (1).030" x .030" (45°) corner notch @ .004" wide in each hole (Qty 12) 

• (1) .020" full-bore (thru) notch @ .004" wide in each hole - (Qty 12) 

• (1) Full-bore (thru) notch @ .020" deep x .004" wide and 

• (1) .030" x .030" (45°) corner notch @ .004" in each hole, 180° apart (Qty 24) 

• (1) Mid-bore notch @ .030" deep x .004" wide x .060" long in each hole - (Qty 12).