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Click Specification

(Non-preferred) dimensions in parentheses.

Unit:mm

Hexagon Bolts for High-Strength Structural Bolting with Large Width Across Flats - Product Grade C - Property Classes 8.8 and 10.9

GOST R 52644 - 2006

Display drawing:

俄标GOST R52644 - 2006 GOST52644 52644GOST Hexagon Bolts for High-Strength Structural Bolting with Large Width Across Flats - Product Grade C - Property Classes 8.8 and 10.9
Thread Size
d
M16 (M18) M20 (M22) M24 (M27) M30 M36 M42 M48
P Pitch
ds Nominal Size
s max
min
k Nominal Size
max
min
h min
e min
da max
r min
b 3d ≤ L≤150
L≥150
2 2.5 2.5 2.5 3 3 3.5 4 4.5 5
16 18 20 22 24 27 30 36 42 48
27 30 34 36 41 46 50 60 65 75
26.16 29 33 35 40 45 49 58.8 63.1 73.1
12 13 14 15 17 19 19 23 26 30
12.35 13.35 14.35 15.35 17.35 19.42 19.42 23.42 26.42 30.42
11.65 12.65 13.65 14.65 16.65 18.58 18.58 22.58 25.58 29.58
8 9 10 11 12 14 15 18 21 24
29.9 33.3 35 39.6 45.2 50.9 50.9 60.8 72.1 83.4
19 21 24 26 28 31 35 41 47 53
1.2 1.2 1.6 1.6 1.6 1.6 2 2 2 2
38 42 46 50 54 60 66 78 90 102
44 48 52 56 60 66 72 84 96 102
①,dw≥0.95s; da≤d+2r; d1=(0.95~1.05)s; k1=0.65k;c=0.4~0.8
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