TS Polytechnic Colleges

Fix a screw in the wall 7 To Work with different fastening devices, spanners, wrenches and Allen/ Hex keys (4) 1. Identification of different types of fastening devices like Screws, Bolts and Nuts, Rivets, and know their specifications . b) Tighten the bolts and nuts using correct type and number of spanner a) Normal b) Ring type , ................
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