|
MOQ: | 900kg |
Price: | Negotiation |
Standard Packaging: | 25KG/CTN,36CTN/PALLET or small packing |
Delivery Period: | 30DAYS |
Payment Method: | L/C, T/T |
Supply Capacity: | 500TON/MONTH |
DIN 6921 Serrate CL8.8 Stainless Steel Flange Bolts Metric
Specification
Choose these Class 10.9 steel screws for high-stress applications, such as valves, pumps, motors,
and automotive suspension systems. They are at least 25% stronger than medium-strength steel
screws. The flange distributes pressure where the screw meets the surface, eliminating the need for a
separate washer. Head height includes the flange. Length is measured from under the flange.
Black-phosphate steel screws are mildly corrosion resistant in dry environments. Zinc yellow-
chromate plated steel screws resist corrosion in wet environments.
Screws that meet ISO 898-1 or SAE J1199 comply with specifications and testing requirements for
material quality. Screws that meet ASME B18.2.3.9M or DIN 6921 comply with specifications for
dimensional standards.
DIN 6921 - Hexagon flange bolts metric
Current norm: DIN EN 1665
d2 - the inner diameter of the ring
b - length of the thread (at least)
l - length of bolt
d - the nominal diameter of the thread
k - head height
s - size hex head turnkey
Steel: 4.6,8.8,10.9
Stainless: A2, A4
Plastic: -
Non Ferrous: -
Thread: 6g
Tdread | M5 | M6 | M8 | M10 | M12 | (M14) | M16 | M20 | |
size d | - | - | M8 x 1 | M10 x 1,25 | M12 x 1,5 | (M14x1,5) | M16 x 1,5 | M20 x 1,5 | |
- | - | - | (M10 x 1) | (M10 x 1,25) | - | - | - | ||
P | 0,8 | 1 | 1,25 | 1,5 | 1,75 | 2 | 2 | 2,5 | |
C | Min. | 1 | 1,1 | 1,2 | 1,5 | 1,8 | 2,1 | 2,4 | 3 |
da | Min. | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 20 |
Max. | 5,75 | 6,75 | 8,75 | 10,8 | 13 | 15,1 | 17,3 | 21,6 | |
dc | Max. | 11,8 | 14,2 | 17,9 | 21,8 | 26 | 29,9 | 34,5 | 42,8 |
dw | Min. | 9,8 | 12,2 | 15,8 | 19,6 | 23,8 | 27,6 | 31,9 | 39,9 |
e | Min. | 8,79 | 11,05 | 14,38 | 16,64 | 20,03 | 23,36 | 26,75 | 32,95 |
h | Max. | 6,2 | 7,3 | 9,4 | 11,4 | 13,8 | 15,9 | 18,3 | 22,4 |
m | Min. | 4,7 | 5,7 | 7,6 | 9,6 | 11,6 | 13,3 | 15,3 | 18,9 |
m´ | Min. | 2,2 | 3,1 | 4,5 | 5,5 | 6,7 | 7,8 | 9 | 11,1 |
s | Nominal size =max. |
8 | 10 | 13 | 15 | 18 | 21 | 24 | 30 |
Min. | 7,78 | 9,78 | 12,73 | 14,73 | 17,73 | 20,67 | 23,67 | 29,16 | |
r | Max. | 0,3 | 0,36 | 0,48 | 0,6 | 0,72 | 0,88 | 0,96 | 1,2 |
Tab2
Thread d | M5 | M6 | M8 | M10 | M12 | M14 | M16 | M 20 | ||||||||||
- | - | M8 x 1 | M10 x 1,25 | M12 x 1,5 | M14 x 1,5 | M16 x 1,5 | M20 x 1,5 | |||||||||||
- | - | - | (M10 x 1) | (M12 x 1,25) | - | - | - | |||||||||||
l | Shank lengtds | |||||||||||||||||
nominal dimension |
min. | max. | ls min. | lg max | ls min. | lg max | ls min. | lg max | ls min. | lg max | ls min. | lg max | ls min. | lg max | ls min. | lg max | ls min. | lg max |
10 | 9,71 | 10,29 | - | 2,4 | ||||||||||||||
12 | 11,65 | 12,35 | - | 2,4 | - | 3 | ||||||||||||
16 | 15,65 | 16,35 | - | 2,4 | - | 3 | - | 4 | ||||||||||
20 | 19,58 | 20,42 | - | 4 | - | 3 | - | 4 | - | 4,5 | ||||||||
25 | 24,58 | 25,42 | 5 | 9 | 2 | 7 | - | 4 | - | 4,5 | - | 5,3 | ||||||
30 | 29,58 | 30,42 | 10 | 14 | 7 | 12 | - | 8 | - | 4,5 | - | 5,3 | - | 6 | ||||
35 | 34,5 | 35,5 | 15 | 19 | 12 | 17 | 6,75 | 13 | - | 9 | - | 5,3 | - | 6 | - | 6 | ||
40 | 39,5 | 40,5 | 20 | 24 | 17 | 22 | 11,75 | 18 | 6,5 | 14 | - | 10 | - | 6 | - | 6 | - | 7,5 |
45 | 44,5 | 45,5 | 25 | 29 | 22 | 27 | 16,75 | 23 | 11,5 | 19 | 6,25 | 15 | - | 11 | - | 6 | - | 7,5 |
50 | 49,5 | 50,5 | 30 | 34 | 27 | 32 | 21,75 | 28 | 16,5 | 24 | 11,25 | 20 | 6 | 16 | - | 12 | - | 7,5 |
55 | 54,4 | 55,6 | 32 | 37 | 26,75 | 33 | 21,5 | 29 | 16,25 | 25 | 11 | 21 | 7 | 17 | - | 9 | ||
60 | 59,4 | 60,6 | 37 | 42 | 31,75 | 38 | 26,5 | 34 | 21,25 | 30 | 16 | 26 | 12 | 22 | - | 14 | ||
65 | 64,4 | 65,5 | 36,75 | 43 | 31,5 | 39 | 26,25 | 35 | 21 | 31 | 17 | 27 | 6,5 | 19 | ||||
70 | 69,4 | 70,6 | 41,75 | 48 | 36,5 | 44 | 31,25 | 40 | 26 | 36 | 22 | 32 | 11,5 | 24 | ||||
80 | 79,4 | 80,6 | 51,75 | 58 | 46,5 | 54 | 41,25 | 50 | 36 | 46 | 32 | 42 | 21,5 | 34 | ||||
90 | 89,3 | 90,7 | 56,5 | 64 | 51,25 | 60 | 46 | 56 | 42 | 52 | 31,5 | 44 | ||||||
100 | 99,3 | 100,7 | 66,5 | 74 | 61,25 | 70 | 56 | 66 | 52 | 62 | 41,5 | 54 | ||||||
110 | 109,3 | 110,7 | 71,25 | 80 | 66 | 76 | 62 | 72 | 51,5 | 54 | ||||||||
120 | 119,3 | 120,7 | 81,25 | 90 | 76 | 86 | 72 | 82 | 61,5 | 74 | ||||||||
130 | 129,2 | 130,8 | 80 | 90 | 76 | 86 | 65,5 | 78 | ||||||||||
140 | 139,2 | 140,8 | 90 | 100 | 86 | 96 | 75,5 | 88 | ||||||||||
150 | 149,2 | 150,8 | 96 | 106 | 85,5 | 98 | ||||||||||||
160 | 159,2 | 160,8 | 106 | 116 | 95,5 | 108 | ||||||||||||
180 | 179,2 | 180,8 | 115,5 | 128 | ||||||||||||||
200 | 199 | 201 | 135,5 | 148 |
Process flow
Cold forging
Annealing treatment(if need) ➨ wiredrawing ➨ clod forging ➨ thread rolling ➨make heat treatment(if need) ➨ Finish ➨ Packing
Hot forging
Cutting material ➨ hot forging ➨ turning ➨ shrink diameter(half thread) ➨thread rolling ➨ make heat treatment(if need) ➨ Finish ➨ Packing
Product Grade
Class4.8 Class5.8 Class6.8 Class8.8 Class10.9 Class12.9
NO. | Mechanical or physical property |
Property class | ||||||||||
4.6 | 4.8 | 5.6 | 5.8 | 6.8 | 8.8 | 9.8 | 10.9 | 12.9/12.9 | ||||
D≤16mma | d>16mmb | d≤16mm | ||||||||||
1 | Tensile strength Rm,Mpa |
nom.c | 400 | 500 | 600 | 800 | 900 | 1000 | 1200 | |||
max. | 400 | 420 | 500 | 520 | 600 | 800 | 830 | 900 | 1040 | 1220 | ||
2 | Lower yield strength ReL,Mpa |
nom.c | 240 | —— | 300 | —— | —— | —— | —— | —— | —— | —— |
max. | 240 | —— | 300 | —— | —— | —— | —— | —— | —— | —— | ||
3 | Stress at 0,2 % nonproportional elongation Rp0.2,Mpa |
nom.c | —— | —— | —— | —— | —— | 640 | 640 | 720 | 900 | 1080 |
max. | —— | —— | —— | —— | —— | 640 | 660 | 720 | 940 | 1100 | ||
4 | Stress at 0,0048 d non-proportional elongation for full-size fasteners Rpf,Mpa |
nom.c | —— | 320 | —— | 400 | 480 | —— | —— | —— | —— | —— |
max. | —— | 340e | —— | 420e | 480e | —— | —— | —— | —— | —— | ||
5 | Stress under proof load Spf,Mpa |
nom. | 225 | 310 | 280 | 380 | 440 | 580 | 600 | 650 | 830 | 970 |
Proof Sp,nom/ReL min Or strength Sp,nom/Rp0.2min Or rati Sp,nom/Rpf min |
0.94 | 0.91 | 0.93 | 0.9 | 0.92 | 0.91 | 0.91 | 0.9 | 0.88 | 0.88 | ||
6 | Percentage elongation after fracture for machined test pieces,A,% |
min. | 22 | -— | 20 | —— | —— | 12 | 12 | 10 | 9 | 8 |
7 | Percentage reduction of area after fracture for machined test pieces,Z,% |
min. | —— | 52 | 48 | 48 | 44 | |||||
8 | Elongation after fracture for full-size fasteners,Af |
min. | —— | 0.24 | —— | 0.22 | 0.2 | —— | —— | —— | —— | —— |
9 | Head soundness | No fracture | ||||||||||
10 | Vickers hardness, HV, F≥98N |
min. | 120 | 130 | 155 | 160 | 190 | 250 | 255 | 290 | 320 | 385 |
max. | 220g | 250 | 320 | 335 | 360 | 380 | 435 | |||||
11 | Brinell hardness, HBW ,F=30D² |
min. | 114 | 124 | 147 | 152 | 181 | 238 | 242 | 276 | 304 | 366 |
max. | 209g | 238 | 304 | 318 | 342 | 361 | 414 | |||||
12 | Rockwell hardness,HRB , HRB |
min. | 67 | 71 | 79 | 82 | 89 | |||||
max. | 95g | 99.5 | ||||||||||
Rockwell hardness, HRC |
min. | —— | 22 | 23 | 28 | 32 | 39 | |||||
max. | —— | 32 | 34 | 37 | 39 | 44 | ||||||
13 | Surface hardness HV 0.3 |
max. | —— | h | h,j | h,j | ||||||
14 | Height of non-decarburized thread zone,E,mm | min. | —— | 1/2H1 | 2/3H1 | 3/4H1 | ||||||
Depth of complete decarburization in the thread,G,mm |
max. | —— | 0.015 | |||||||||
15 | Reduction of hardness after retempering,HV | max. | —— | 20 | ||||||||
16 | Breaking torque, MB,N·m |
min. | —— | in accordance with ISO 898-7 | ||||||||
17 | Impact strength, KVK,I,J |
min. | —— | 27 | —— | 27 | 27 | 27 | 27 | m | ||
18 | Surface integrity in accordance with | ISO 6157-1n | ISO 6157-3 | |||||||||
a Values do not apply for structural bolting. |
Materials and Chemical compstition
1008
CHEMICAL COMPOSI % | ||||||||
C | Si | Mn | P | S | Cr | Ni | Cu | Al |
0.06 | 0.06 | 0.33 | 0.013 | 0.003 | 0.01 | 0 | 0.01 | 0.028 |
1035
CHEMICAL COMPOSI % | |||||||
C | Si | Mn | P | S | Cr | Ni | Cu |
0.34 | 0.13 | 0.73 | 0.012 | 0.002 | 0.02 | 0.01 | 0.02 |
10B21
CHEMICAL COMPOSI % | ||||||
C | Si | Mn | P | S | Cr | B |
0.2 | 0.04 | 0.81 | 0.017 | 0.007 | 0.017 | 0.0021 |
1045
CHEMICAL COMPOSI % | |||||||
C | Si | Mn | P | S | Cr | Ni | Cu |
0.45 | 0.23 | 0.58 | 0.014 | 0.006 | 0.057 | 0.008 | 0.016 |
40CR
CHEMICAL COMPOSI % | |||||||
C | Si | Mn | P | S | Cr | Ni | Cu |
0.4 | 0.21 | 0.54 | 0.015 | 0.008 | 0.95 | 0.02 | 0.02 |
35CRMO
CHEMICAL COMPOSI % | ||||||||
C | Si | Mn | P | S | Cr | Ni | Cu | Mo |
0.35 | 0.22 | 0.59 | 0.01 | 0.003 | 0.93 | 0.01 | 0.01 | 0.21 |
42CRMO
CHEMICAL COMPOSI % | ||||||||
C | Si | Mn | P | S | Cr | Ni | Cu | Mo |
0.42 | 0.27 | 0.92 | 0.013 | 0.004 | 1.01 | 0.03 | 0.04 | 0.2 |
Finish
PLAIN ZP YZP BLACK HDG DACROMET GEOMET CHROME NICKEL AND SO ON
PACKING
QBH BULK
20-25KG/CTN,36CTNS/PALLET
20-30KG/BAGS,36BAGS/PALLET
ONE TON/BOXES
50KG/ IRON DRUM,12 IRON DRUMS/PALLET
QBH SMALL PACKING
Packing in small boxes according to customer’s requirements
Packing in plastic bag according to customer’s requirements
QBH PALLET TYPE
SOLID WOOD FUMIGATION PALLET
EURO Pallet
THREE SPLINT PALLET
WOODEN BOX
The advantages of QBH
|
MOQ: | 900kg |
Price: | Negotiation |
Standard Packaging: | 25KG/CTN,36CTN/PALLET or small packing |
Delivery Period: | 30DAYS |
Payment Method: | L/C, T/T |
Supply Capacity: | 500TON/MONTH |
DIN 6921 Serrate CL8.8 Stainless Steel Flange Bolts Metric
Specification
Choose these Class 10.9 steel screws for high-stress applications, such as valves, pumps, motors,
and automotive suspension systems. They are at least 25% stronger than medium-strength steel
screws. The flange distributes pressure where the screw meets the surface, eliminating the need for a
separate washer. Head height includes the flange. Length is measured from under the flange.
Black-phosphate steel screws are mildly corrosion resistant in dry environments. Zinc yellow-
chromate plated steel screws resist corrosion in wet environments.
Screws that meet ISO 898-1 or SAE J1199 comply with specifications and testing requirements for
material quality. Screws that meet ASME B18.2.3.9M or DIN 6921 comply with specifications for
dimensional standards.
DIN 6921 - Hexagon flange bolts metric
Current norm: DIN EN 1665
d2 - the inner diameter of the ring
b - length of the thread (at least)
l - length of bolt
d - the nominal diameter of the thread
k - head height
s - size hex head turnkey
Steel: 4.6,8.8,10.9
Stainless: A2, A4
Plastic: -
Non Ferrous: -
Thread: 6g
Tdread | M5 | M6 | M8 | M10 | M12 | (M14) | M16 | M20 | |
size d | - | - | M8 x 1 | M10 x 1,25 | M12 x 1,5 | (M14x1,5) | M16 x 1,5 | M20 x 1,5 | |
- | - | - | (M10 x 1) | (M10 x 1,25) | - | - | - | ||
P | 0,8 | 1 | 1,25 | 1,5 | 1,75 | 2 | 2 | 2,5 | |
C | Min. | 1 | 1,1 | 1,2 | 1,5 | 1,8 | 2,1 | 2,4 | 3 |
da | Min. | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 20 |
Max. | 5,75 | 6,75 | 8,75 | 10,8 | 13 | 15,1 | 17,3 | 21,6 | |
dc | Max. | 11,8 | 14,2 | 17,9 | 21,8 | 26 | 29,9 | 34,5 | 42,8 |
dw | Min. | 9,8 | 12,2 | 15,8 | 19,6 | 23,8 | 27,6 | 31,9 | 39,9 |
e | Min. | 8,79 | 11,05 | 14,38 | 16,64 | 20,03 | 23,36 | 26,75 | 32,95 |
h | Max. | 6,2 | 7,3 | 9,4 | 11,4 | 13,8 | 15,9 | 18,3 | 22,4 |
m | Min. | 4,7 | 5,7 | 7,6 | 9,6 | 11,6 | 13,3 | 15,3 | 18,9 |
m´ | Min. | 2,2 | 3,1 | 4,5 | 5,5 | 6,7 | 7,8 | 9 | 11,1 |
s | Nominal size =max. |
8 | 10 | 13 | 15 | 18 | 21 | 24 | 30 |
Min. | 7,78 | 9,78 | 12,73 | 14,73 | 17,73 | 20,67 | 23,67 | 29,16 | |
r | Max. | 0,3 | 0,36 | 0,48 | 0,6 | 0,72 | 0,88 | 0,96 | 1,2 |
Tab2
Thread d | M5 | M6 | M8 | M10 | M12 | M14 | M16 | M 20 | ||||||||||
- | - | M8 x 1 | M10 x 1,25 | M12 x 1,5 | M14 x 1,5 | M16 x 1,5 | M20 x 1,5 | |||||||||||
- | - | - | (M10 x 1) | (M12 x 1,25) | - | - | - | |||||||||||
l | Shank lengtds | |||||||||||||||||
nominal dimension |
min. | max. | ls min. | lg max | ls min. | lg max | ls min. | lg max | ls min. | lg max | ls min. | lg max | ls min. | lg max | ls min. | lg max | ls min. | lg max |
10 | 9,71 | 10,29 | - | 2,4 | ||||||||||||||
12 | 11,65 | 12,35 | - | 2,4 | - | 3 | ||||||||||||
16 | 15,65 | 16,35 | - | 2,4 | - | 3 | - | 4 | ||||||||||
20 | 19,58 | 20,42 | - | 4 | - | 3 | - | 4 | - | 4,5 | ||||||||
25 | 24,58 | 25,42 | 5 | 9 | 2 | 7 | - | 4 | - | 4,5 | - | 5,3 | ||||||
30 | 29,58 | 30,42 | 10 | 14 | 7 | 12 | - | 8 | - | 4,5 | - | 5,3 | - | 6 | ||||
35 | 34,5 | 35,5 | 15 | 19 | 12 | 17 | 6,75 | 13 | - | 9 | - | 5,3 | - | 6 | - | 6 | ||
40 | 39,5 | 40,5 | 20 | 24 | 17 | 22 | 11,75 | 18 | 6,5 | 14 | - | 10 | - | 6 | - | 6 | - | 7,5 |
45 | 44,5 | 45,5 | 25 | 29 | 22 | 27 | 16,75 | 23 | 11,5 | 19 | 6,25 | 15 | - | 11 | - | 6 | - | 7,5 |
50 | 49,5 | 50,5 | 30 | 34 | 27 | 32 | 21,75 | 28 | 16,5 | 24 | 11,25 | 20 | 6 | 16 | - | 12 | - | 7,5 |
55 | 54,4 | 55,6 | 32 | 37 | 26,75 | 33 | 21,5 | 29 | 16,25 | 25 | 11 | 21 | 7 | 17 | - | 9 | ||
60 | 59,4 | 60,6 | 37 | 42 | 31,75 | 38 | 26,5 | 34 | 21,25 | 30 | 16 | 26 | 12 | 22 | - | 14 | ||
65 | 64,4 | 65,5 | 36,75 | 43 | 31,5 | 39 | 26,25 | 35 | 21 | 31 | 17 | 27 | 6,5 | 19 | ||||
70 | 69,4 | 70,6 | 41,75 | 48 | 36,5 | 44 | 31,25 | 40 | 26 | 36 | 22 | 32 | 11,5 | 24 | ||||
80 | 79,4 | 80,6 | 51,75 | 58 | 46,5 | 54 | 41,25 | 50 | 36 | 46 | 32 | 42 | 21,5 | 34 | ||||
90 | 89,3 | 90,7 | 56,5 | 64 | 51,25 | 60 | 46 | 56 | 42 | 52 | 31,5 | 44 | ||||||
100 | 99,3 | 100,7 | 66,5 | 74 | 61,25 | 70 | 56 | 66 | 52 | 62 | 41,5 | 54 | ||||||
110 | 109,3 | 110,7 | 71,25 | 80 | 66 | 76 | 62 | 72 | 51,5 | 54 | ||||||||
120 | 119,3 | 120,7 | 81,25 | 90 | 76 | 86 | 72 | 82 | 61,5 | 74 | ||||||||
130 | 129,2 | 130,8 | 80 | 90 | 76 | 86 | 65,5 | 78 | ||||||||||
140 | 139,2 | 140,8 | 90 | 100 | 86 | 96 | 75,5 | 88 | ||||||||||
150 | 149,2 | 150,8 | 96 | 106 | 85,5 | 98 | ||||||||||||
160 | 159,2 | 160,8 | 106 | 116 | 95,5 | 108 | ||||||||||||
180 | 179,2 | 180,8 | 115,5 | 128 | ||||||||||||||
200 | 199 | 201 | 135,5 | 148 |
Process flow
Cold forging
Annealing treatment(if need) ➨ wiredrawing ➨ clod forging ➨ thread rolling ➨make heat treatment(if need) ➨ Finish ➨ Packing
Hot forging
Cutting material ➨ hot forging ➨ turning ➨ shrink diameter(half thread) ➨thread rolling ➨ make heat treatment(if need) ➨ Finish ➨ Packing
Product Grade
Class4.8 Class5.8 Class6.8 Class8.8 Class10.9 Class12.9
NO. | Mechanical or physical property |
Property class | ||||||||||
4.6 | 4.8 | 5.6 | 5.8 | 6.8 | 8.8 | 9.8 | 10.9 | 12.9/12.9 | ||||
D≤16mma | d>16mmb | d≤16mm | ||||||||||
1 | Tensile strength Rm,Mpa |
nom.c | 400 | 500 | 600 | 800 | 900 | 1000 | 1200 | |||
max. | 400 | 420 | 500 | 520 | 600 | 800 | 830 | 900 | 1040 | 1220 | ||
2 | Lower yield strength ReL,Mpa |
nom.c | 240 | —— | 300 | —— | —— | —— | —— | —— | —— | —— |
max. | 240 | —— | 300 | —— | —— | —— | —— | —— | —— | —— | ||
3 | Stress at 0,2 % nonproportional elongation Rp0.2,Mpa |
nom.c | —— | —— | —— | —— | —— | 640 | 640 | 720 | 900 | 1080 |
max. | —— | —— | —— | —— | —— | 640 | 660 | 720 | 940 | 1100 | ||
4 | Stress at 0,0048 d non-proportional elongation for full-size fasteners Rpf,Mpa |
nom.c | —— | 320 | —— | 400 | 480 | —— | —— | —— | —— | —— |
max. | —— | 340e | —— | 420e | 480e | —— | —— | —— | —— | —— | ||
5 | Stress under proof load Spf,Mpa |
nom. | 225 | 310 | 280 | 380 | 440 | 580 | 600 | 650 | 830 | 970 |
Proof Sp,nom/ReL min Or strength Sp,nom/Rp0.2min Or rati Sp,nom/Rpf min |
0.94 | 0.91 | 0.93 | 0.9 | 0.92 | 0.91 | 0.91 | 0.9 | 0.88 | 0.88 | ||
6 | Percentage elongation after fracture for machined test pieces,A,% |
min. | 22 | -— | 20 | —— | —— | 12 | 12 | 10 | 9 | 8 |
7 | Percentage reduction of area after fracture for machined test pieces,Z,% |
min. | —— | 52 | 48 | 48 | 44 | |||||
8 | Elongation after fracture for full-size fasteners,Af |
min. | —— | 0.24 | —— | 0.22 | 0.2 | —— | —— | —— | —— | —— |
9 | Head soundness | No fracture | ||||||||||
10 | Vickers hardness, HV, F≥98N |
min. | 120 | 130 | 155 | 160 | 190 | 250 | 255 | 290 | 320 | 385 |
max. | 220g | 250 | 320 | 335 | 360 | 380 | 435 | |||||
11 | Brinell hardness, HBW ,F=30D² |
min. | 114 | 124 | 147 | 152 | 181 | 238 | 242 | 276 | 304 | 366 |
max. | 209g | 238 | 304 | 318 | 342 | 361 | 414 | |||||
12 | Rockwell hardness,HRB , HRB |
min. | 67 | 71 | 79 | 82 | 89 | |||||
max. | 95g | 99.5 | ||||||||||
Rockwell hardness, HRC |
min. | —— | 22 | 23 | 28 | 32 | 39 | |||||
max. | —— | 32 | 34 | 37 | 39 | 44 | ||||||
13 | Surface hardness HV 0.3 |
max. | —— | h | h,j | h,j | ||||||
14 | Height of non-decarburized thread zone,E,mm | min. | —— | 1/2H1 | 2/3H1 | 3/4H1 | ||||||
Depth of complete decarburization in the thread,G,mm |
max. | —— | 0.015 | |||||||||
15 | Reduction of hardness after retempering,HV | max. | —— | 20 | ||||||||
16 | Breaking torque, MB,N·m |
min. | —— | in accordance with ISO 898-7 | ||||||||
17 | Impact strength, KVK,I,J |
min. | —— | 27 | —— | 27 | 27 | 27 | 27 | m | ||
18 | Surface integrity in accordance with | ISO 6157-1n | ISO 6157-3 | |||||||||
a Values do not apply for structural bolting. |
Materials and Chemical compstition
1008
CHEMICAL COMPOSI % | ||||||||
C | Si | Mn | P | S | Cr | Ni | Cu | Al |
0.06 | 0.06 | 0.33 | 0.013 | 0.003 | 0.01 | 0 | 0.01 | 0.028 |
1035
CHEMICAL COMPOSI % | |||||||
C | Si | Mn | P | S | Cr | Ni | Cu |
0.34 | 0.13 | 0.73 | 0.012 | 0.002 | 0.02 | 0.01 | 0.02 |
10B21
CHEMICAL COMPOSI % | ||||||
C | Si | Mn | P | S | Cr | B |
0.2 | 0.04 | 0.81 | 0.017 | 0.007 | 0.017 | 0.0021 |
1045
CHEMICAL COMPOSI % | |||||||
C | Si | Mn | P | S | Cr | Ni | Cu |
0.45 | 0.23 | 0.58 | 0.014 | 0.006 | 0.057 | 0.008 | 0.016 |
40CR
CHEMICAL COMPOSI % | |||||||
C | Si | Mn | P | S | Cr | Ni | Cu |
0.4 | 0.21 | 0.54 | 0.015 | 0.008 | 0.95 | 0.02 | 0.02 |
35CRMO
CHEMICAL COMPOSI % | ||||||||
C | Si | Mn | P | S | Cr | Ni | Cu | Mo |
0.35 | 0.22 | 0.59 | 0.01 | 0.003 | 0.93 | 0.01 | 0.01 | 0.21 |
42CRMO
CHEMICAL COMPOSI % | ||||||||
C | Si | Mn | P | S | Cr | Ni | Cu | Mo |
0.42 | 0.27 | 0.92 | 0.013 | 0.004 | 1.01 | 0.03 | 0.04 | 0.2 |
Finish
PLAIN ZP YZP BLACK HDG DACROMET GEOMET CHROME NICKEL AND SO ON
PACKING
QBH BULK
20-25KG/CTN,36CTNS/PALLET
20-30KG/BAGS,36BAGS/PALLET
ONE TON/BOXES
50KG/ IRON DRUM,12 IRON DRUMS/PALLET
QBH SMALL PACKING
Packing in small boxes according to customer’s requirements
Packing in plastic bag according to customer’s requirements
QBH PALLET TYPE
SOLID WOOD FUMIGATION PALLET
EURO Pallet
THREE SPLINT PALLET
WOODEN BOX
The advantages of QBH