Metric Screws and Bolts Machinery's Handbook, 31st Edition
1721
Table 8. American National Standard Metric Hex Flange Screws ANSI/ASME B18.2.3.4M-2001 (Withdrawn)
Indentation and Configuration Optional
K
L
L g
B
K 1
S D c
L s
X
C
v
E
Optional Point Construction
R
Fillet
15°–30°
Property Class and Manu- facturer’s Identification to Appear on Top of Head
Nominal Screw Dia., D , and Thread Pitch Body Dia., D s
Width Across Corners, E
Width Across Flats, S
Max.
Min.
Max.
Min.
Max.
Min. Max. Min. Min. Max. Min. Max.
5.00 4.82 7.00 6.64 8.08 7.44 11.4 9.4 1.0 5.6 2.30 0.3 6.00 5.82 8.00 7.64 9.24 8.56 13.6 11.6 1.1 6.8 2.90 0.4 8.00 7.78 10.00 9.64 11.55 10.80 17.0 14.9 1.2 8.5 3.80 0.5 10.00 9.78 13.00 12.57 15.01 14.08 20.8 18.7 1.5 9.7 4.30 0.6 12.00 11.73 15.00 14.57 17.32 16.32 24.7 22.0 1.8 11.9 5.40 0.7 14.00 13.73 18.00 17.57 20.78 19.68 28.6 25.9 2.1 12.9 5.60 0.8
M5 × 0.8 M6 × 1 M8 × 1.25 M10 × 1.5 M12 × 1.75 M14 × 2 M16 × 2
16.00 15.73 21.00 20.48 24.25 22.94 32.8 30.1 2.4 15.1 6.70 1.0 All dimensions are in millimeters. Basic thread lengths, B , are the same as given in Table 13. Transition thread length, X , includes the length of incomplete threads and tolerances on grip gaging length and body length. This dimension is intended for calculation purposes only. For additional manufacturing and acceptance specifications, reference should be made to ANSI/ASME B18.2.3.4M-2001 standard. Table 9. American National Standard Metric Round Head Square Neck Bolts Reduced Body Diameters ANSI/ASME B18.5.2.2M-1982
D r
Diameter of Reduced Body D r
Diameter of Reduced Body D r
Nominal Bolt Dia., D and Thread Pitch
Nominal Bolt Dia., D and Thread Pitch
Max. 5.00 6.00 8.00 10.00 12.00
Min. 4.36 5.21 7.04 8.86 10.68
Max.
Min. 12.50 14.50 18.16 21.80
14.00 16.00 20.00 24.00
M5 × 0.8 M6 × 1 M8 × 1.25 M10 × 1.5 M12 × 1.75
M14 × 2 M16 × 2 M20 × 2.5
M24 × 3
…
…
…
All dimensions are in millimeters.
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