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MUSHROOM HEAD SQUARE NECK BOLTSสกรูหัวกลม(หัวเห็ด)
Standard: DIN603;IFI C-40B.S.;GB 12,14
Material: Carbon Steel 4.8,8.8
 
 
DIN603
MUSHROOM HEAD SQUARE NECK BOLTS
Thread Size: M6-M12 Length(L):16-100mm		  
Thread
Size
Pitch
b
dk
f
k
v
L
1)
2)
3)
M6
1.00
18
24
-
16.55
4.6
3.88
6.48
16-80
M8
1.25
22
28
41
20.65
5.6
4.88
8.58
20-100
M10
1.50
26
32
45
24.65
6.6
5.38
10.58
20-100
M12
1.75
30
36
49
30.65
8.75
6.95
12.70
30-100

Note: 1) L<125mm; 2)125<L<200mm; 3)L>200mm

 
B.S.
ROUND HEAD SQUARE NECK BOLTS
Thread Size: 1/4-3/8in Length(L):1 1/2-4 in		  

 

Thread
Size
Thread per inch
dk
f
k
v
L
1/4
20
0.562
0.188
0.125
0.250
1 1/2-4
5/16
18
0.703
0.234
0.156
0.312
1 3/4-4
3/8
16
0.844
0.281
0.188
0.375
2-4

 
IFI C-40
ROUND HEAD SQUARE NECK BOLTS
Thread Size: 1/4-3/8in Length(L):1 1/2-4 in		  
Thread
Size
Thread per inch
dk
f
k
v
L
1/4
20
0.594
0.156
0.145
0.260
1 1/2-4
5/16
18
0.719
0.187
0.176
0.324
1 3/4-4
3/8
16
0.844
0.219
0.208
0.388
2-4

Note: 1) L<125mm; 2)125<L<200mm; 3) L>200mm

 

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