Befast Co., Ltd.
Befast Co., Ltd.
Products
carriage-bolts-and-nuts.jpg
carriage-bolts-and-washers.jpg
NameCarriage BoltsMaterialsCarbon Steel/Stainless Steel
StandardsDIN ISO ANC BSW JIS etc.Strength level4.8 8.8 10.9 12.9 A2-70 A4-70 A4-80
SizeM3-M50Surface finishZPHDGBLACKDacromet etc.
Length15-500SamplesAvailable


Large Round Head Square Neck Bolts DIN 603

Large Round Head Square Neck Bolts DIN 603
Thread specificationM5M6M8M10M12M16M20
d
Ppitch0.811.251.51.7522.5
bL≤1251618twenty two26303846
125<L≤200twenty twotwenty four2832364452
L>200--4145495765
dkmaximum value13.5516.5520.6524.6530.6538.846.8
minimum12.4515.4519.3523.3529.3537.245.2
dsmaximum value56810121620
minimum4.525.527.429.4211.315.319.16
k 1maximum value4.14.65.66.68.7512.915.9
minimum2.93.44.45.47.2511.114.1
kmaximum value3.33.884.885.386.958.9511.05
minimum2.73.124.124.626.058.059.95
r 110.712.61619.224.129.333.9
r 2maximum value0.50.50.50.5111
r 3maximum value0.750.91.21.51.82.43
smaximum value5.486.488.5810.5812.716.720.84
minimum4.525.527.429.4211.315.319.16
Thousand pieces of steel weight ≈kg-------
thread length b-------