Machinery's Handbook, 31st Edition
1762
British Fasteners Table 3. British Standard ISO Metric Precision Hexagon Bolts, Screws and Nuts BS 3692:1967 (obsolescent)
30°
30°
30°
r rad.
r rad.
45°
r rad.
e
d a d f
d
d f
d a
d
a
c
b
l length c
l length
k
s
k
k
Full Bearing Head (Alternative Permissible on Bolts and Screws)
Washer-Faced Hexagon Head Bolt
Washer-Faced Hexagon Head Screw
l length
l length
d
d
Round Thread End 1 Rad. Approx. Rounded End d 1 4 Alternative Types of End Permissible on Bolts and Screws
30°
Countersink Dia.
30°
30°
e
d
120° ± 10° Chamfer Enlarged View of Nut Countersink
m
s
m Thin Nut
Normal Thickness Nut
r
r
r
d
d
d 2
d 2
d
n
n
n
m
s
m
s
m
s
h Castle Nut (Eight Slots) Sizes M42 to M68 Only
h Slotted Nut (Six Slots) Sizes M4 to M39 Only
h Castle Nut (Six Slots) Sizes M12 to M39 Only
Copyright 2020, Industrial Press, Inc.
ebooks.industrialpress.com
Made with FlippingBook - Share PDF online