Helicoil (HELR1191-8) Insert 1/2-20 6PK

Ideal for auto repair and machinery where metric threads are specified. The first number represents the diameter of the tap in millimeters, the second number is the distance between the threads in millimeters. Straight flutes are ground to provide rapid chip removal for efficient threading. Tap size and recommended drill bit size are etched on each tool for easy identification. No. 8312: Size: 3 mm x .50, Tap Point Style: Plug, Number of Flutes: 4, Pkg Qty: 1, Package Type: Card No. 8317: Size: 4 mm - .70, Tap Point Style: Plug, Number of Flutes: 4, Pkg Qty: 1, Package Type: Card No. 8318: Size: 4 mm - .75, Tap Point Style: Plug, Number of Flutes: 4, Pkg Qty: 1, Package Type: Card No. 8322ZR: Size: 5 mm - .80, Tap Point Style: Plug, Number of Flutes: 4, Pkg Qty: 1, Package Type: Card No. 8323ZR: Size: 5 mm - .90, Tap Point Style: Plug, Number of Flutes: 4, Pkg Qty: 1, Package Type: Card No. 8327: Size: 6 mm - 1.00, Tap Point Style: Plug, Number of Flutes: 4, Pkg Qty: 1, Package Type: Card No. 8331: Size: 7 mm- 1.00, Tap Point Style: Plug, Number of Flutes: 4, Pkg Qty: 1, Package Type: Card No. 8333: Size: 8 mm - 1.00, Tap Point Style: Plug, Number of Flutes: 4, Pkg Qty: 1, Package Type: Card No. 8334: Size: 8 mm - 1.25, Tap Point Style: Plug, Number of Flutes: 4, Pkg Qty: 1, Package Type: Card No. 8336: Size: 9 mm - 1.00, Tap Point Style: Plug, Number of Flutes: 4, Pkg Qty: 1, Package Type: Card No. 8337: Size: 9 mm - 1.25, Tap Point Style: Plug, Number of Flutes: 4, Pkg Qty: 1, Package Type: Card No. 8338: Size: 10 mm - 1.00, Tap Point Style: Plug, Number of Flutes: 4, Pkg Qty: 1, Package Type: Card No. 8339: Size: 10 mm - 1.25, Tap Point Style: Plug, Number of Flutes: 4, Pkg Qty: 1, Package Type: Card No. 8340: Size: 10 mm - 1.50, Tap Point Style: Plug, Number of Flutes: 4, Pkg Qty: 1, Package Type: Card No. 8341: Size: 11 mm - 1.50, Tap Point Style: Plug, Number of Flutes: 4, Pkg Qty: 1, Package Type: Card No. 8342ZR: Size: 12 mm - 1.25, Tap Point Style: Plug, Number of Flutes: 4, Pkg Qty: 1, Package Type: Card No. 8343: Size: 12 mm - 1.50, Tap Point Style: Plug, Number of Flutes: 4, Pkg Qty: 1, Package Type: Card No. 8344ZR: Size: 12 mm - 1.75, Tap Point Style: Plug, Number of Flutes: 4, Pkg Qty: 1, Package Type: Card No. 1749ZR: Size: 14 mm - 1.25, Tap Point Style: Plug, Number of Flutes: 4, Pkg Qty: 1, Package Type: Card No. 1752ZR: Size: 14 mm - 2.00, Tap Point Style: Plug, Number of Flutes: 4, Pkg Qty: 1, Package Type: Card No. 1756ZR: Size: 16 mm - 2.00, Tap Point Style: Plug, Number of Flutes: 4, Pkg Qty: 1, Package Type: Card No. 1759ZR: Size: 18 mm - 1.50, Tap Point Style: Plug, Number of Flutes: 4, Pkg Qty: 1, Package Type: Card Thanks for shopping Hipp Hardware Plus's Online Store for all your DIY and Home Improvement needs. Remember Hipps Help!