LRDG-D For Letter "D" (.246) for use in removal of 1/4" MS20470 & AN470 solid rivets They were designed to eliminate double drilled holes and drill bits "skating" off of rivets. /rebates/2fb2fTools-Power-Tool-Accessories-Drill-Bits2f3-16-in2fN-5yc1vZc248Z1z1ddh2&. They are compact, easy to grip and easy to spot if dropped. The guides allow you to drill straight and center every time. After the head is drilled, the rivet can be punched out with little effort. Usually there is no need to drill much past the thickness of the rivet head in depth. Dip drill bit in lube, insert drill into bore of guide and drill.
Hold firmly with two fingers, making sure there is no movement from side to side.
Use Letter "D" (.246) drill bit and guide for 1/4 inch diameter rivets. Use #11 drill bit and guide for 3/16 inch diameter rivets. Use #21 drill bit and guide for 5/32 inch diameter rivets. Use #31 drill bit and guide for 1/8 inch diameter rivets. Use #41 drill bit and guide for 3/32 inch diameter rivets.
Drill bit size listed in the table is for material with a 0.030'-0.090. First select the appropriate guide for the rivet being drilled. Choose from our selection of 5/16'-24 rivets in a wide range of styles and sizes. Dip drill bit in lubricant at least once for every rivet. The drill lube is to ensure smooth minimal friction between the drill bit and the guide, cooling the bit, keeping it from galling, which aids in longer drill and guide life. This set is designed one size under bore and hardened C1144 steel for long life. Combination Gauge - Rivet, drill & screw 3-in-1 Set Rivet Gauge - Measures pop rivets & blind threaded inserts 5 Ruler Internally threaded screw gauge Size.
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