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Size, mm
Thread diameter, d 20
Thread pitch (large) 2.5
Shank diameter, d1 20
Width across flats, S 30
Head height, k 12.5
Diameter of circumscribed circle, е, not less than 33.5
Thread length, b, mm 46
Strength grade 4.8

 

Bolt length, L, mm 50 55 60 65 70 75 80 85 90
Theoretical weight oа 1000 bolts, kg 194 206.8 219.1 231.5 243.8 256.1 268.1 280.1 293.2

Steel grade: 10KP DSTU 3684-94

Packaging: Cardboard boxes of net weight 25kg