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JIS B1180 Hexagon Head CL4.8 5.8 6.8 Carbon Steel Bolt

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xStandard | JIS B1180 | Material | Carbon Steel |
---|---|---|---|
Size | M5-M52 | Finish | ZP YZP HDG BLACK |
Grade | 4.8 6.8 8.8 10.9 12.9 | Packing | Carton And Pallet Or According To The Customer's Requirement |
Sample | Free Sample | Thread | Machine Thread |
Lead Time | Per On Order Quantity | Type | Hexagon Head |
Advantage | We Can Manufacture According To Client Design,OEM / ODM / Customized Service Provided | Oem | Yes,welcome |
High Light | JIS B1180 Carbon Steel Bolt,CL4.8 Carbon Steel Bolt,JIS B1180 Half Thread Bolts |
JIS B1180 Hexagon Head CL4.8 5.8 6.8 Carbon Steel Bolt
Specification
JIS B1180 Small Head Hex Bolts have the smallest width heads of all metric hex bolts/hex head cap screws. The width across flats (wrench size) of the three available sizes is 1 to 3 mm smaller than equal sized DIN 931, ISO 4014 and ANSI B18.2.3.1M bolts, while their head height is slightly larger. Otherwise, like their counterparts, they are partially threaded (PT) or fully threaded (FT) with external machine screw threads; use with both internally threaded holes and nuts. M8 is coarse pitch (1.25 mm) while M10 and M12 are fine pitch (but also 1.25 mm). Supplied in Class 8.8 steel, most are zinc plated to resist the formation of corrosion. Minimum threaded length of partially threaded bolts is related to bolt diameter; fully threaded bolts are also called tap bolts; thread tolerance is 6h for plated and 6g for unplated (plain finish); and threading is standard right-hand. Length is measured from under the head to the tip of the bolt.
Legend:
l - length of bolt
Makings:QBH
Steel: 5.6,5.8,8.8,10.9,12.9
Stainless: A2,A4
Plastic: -
Non Ferrous: Brass
Thread: 6g
JIS B 1180:2014 HEXAGON HEAD BOLTS AND HEXAGON HEAD SCREWS
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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
- QBH brand sales to the main quality assurance.
- Years of export trade management, excellent service, word-of-mouth guarantee.
- By working with TUV,escort for quality.
- Customization of non-standard parts can be made according to customer's requirements and drawings.
- For quality customers,we can provide a certain credit period.