Quality Inspection for ASTM A320 L7 Combination Studs Combo Studs Supply to Liberia

ASTM A320/A320M L7 Combination Studs Standard: According to drawing Inch Size: 1/4”-2.1/2” with various lengths Metric Size: M6-M64 with various lengths Other Available Grade: ASTM A193/A193M B7, B7M, B16 B8 Class 1 & 2, B8M Class 1 & 2, ASTM A320/A320M L7, L7M, L43, B8 Class 1 & 2, B8M Class 1 & 2, and so on. Finish: Plain, Black Oxide, Zinc Plated, Zinc Nickel Plated, Cadmium Plated, PTFE etc. Packing: Bulk about 25 kgs each carton, 36 cartons each pallet Advantage: High Quality and Strict Quality Control, Competitive Price,Timely Delivery; Technical Support, Supply Test Reports Please feel free to contact us for more details.

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    If your original lug bolts on your Exige or Elise are stuck and you keep shearing the 10 point adapter tool, you will be faced with the decision to drill them out for removal. What is happening is the surface between the cone of the bolt and the wheel is where it is stuck, it is not the bolt thread to the hub threads. The trick here is to just use a 3/8 inch Cobalt drill bit with some PB Blaster Penetrant oil around the lug bolt and on the drilling surface and go to a depth just there the threads (on the lug bolt) start. This will allow you to use a maximum of 175 lb-feet of torque to loosen the bolt. Do not go much above 200 lb-feet of torque with the Evora adapter tool (don’t use the stock Elise or Exige tool) otherwise it will shear. This drill out procedure essentially collapses the surface around the cone and allows the surfaces to break loose or detach. Do not worry about being exactly centered, but try to be as close as possible and always check your progress with a depth gauge and light. Note that the stock 10 point lug bolts are made of a non hardend steel so Cobalt 3/8 drill bit can cut through it relatively easily. The Socket Wrench used is actually a 14 inch (in length) unit, half inch drive with a 17 mm socket. No breaker bar was used so this limited the amount of torque applied to the Lotus adapter tool….which is also made out of non-hardened steel. Very weak design.