Hexagonal Bolts & Nut, Square Nut with proportions and its line diagrams.

HEXAGONAL BOLTS AND NUT

PROPORTIONS FOR HEXAGONAL BOLTS

From Design Data Book

Assuming Diameter (d) = 24 mm

Size across flat (S) = 1.25d+6 mm

Size across corner (e) = 1.155×S

Height of the nut (h) = 0.8 d to d

Angle =30°

The length of threaded part

Height (h) = 0.75 d to 0.8 d

length (l) = 2d+5 mm, for bolt up to and including.         

length (l) = 2d+10mm, for bolts length above 80 mm and up to 200 mm.

length (l) = 2d+20 mm, for lengths above 200 mm.

V - THREAD WITH FLAT CREST AND ROOT

Hexagonal bolt thread part (v- thread with flat crest and root)

Pitch (P) = 3 mm

Height (H) = 3 mm

PROPORTIONS FOR HEXAGONAL NUT

Assuming Diameter (d) = 24 mm

Size across flat (S) = 1.25d+6 mm

Size across corner (e) = 1.155×S

Height of the nut (h) = 0.8 d to d

Angle =30°

 

PROPORTIONS FOR SQUARE NUT

Size across the flat (s)    = 1.5 d +3 mm

Size across the corner e =  √2  ×s

Height of the nut h = 0.8 d to d

Angle = 30°