Hex Head Screw H.T (Full Thread) Size: M20 X 55Mm With Suitable Plain And Spring Washer. Grade Of Screw Should Be 8.8 & Material Should Be Steel As Per Is 1364-2002. Grade Of Plain Washer Should Be Is 2016 And Grade Of Spring Washer Should Be Is 3063. (Qty. Hex Head Screw - 01 Nos/Set. Spring Wash Er - 01 Nos/Set. Plain Washer- 01 Nos/Set.)Make - Unbrako, Tvs, Vif, Dfl Or Bmi Only. ]