Qbh Carriage Bolts DIN603 Cl. 4.8/6.8 M5-M20

Product Details
Customization: Available
Material: Carbon Steel
Type: Mushroom Head
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  • Qbh Carriage Bolts DIN603 Cl. 4.8/6.8 M5-M20
  • Qbh Carriage Bolts DIN603 Cl. 4.8/6.8 M5-M20
  • Qbh Carriage Bolts DIN603 Cl. 4.8/6.8 M5-M20
  • Qbh Carriage Bolts DIN603 Cl. 4.8/6.8 M5-M20
  • Qbh Carriage Bolts DIN603 Cl. 4.8/6.8 M5-M20
  • Qbh Carriage Bolts DIN603 Cl. 4.8/6.8 M5-M20
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  • Overview
  • Product Description
  • Product Parameters
  • Detailed Photos
  • Certifications & Packaging
  • FAQ
Overview

Basic Info.

Model NO.
QBH-C-DIN603-ZP, QBH-C-DIN603-HDG
Head Style
Mushroom Head
Standard
DIN
Grade
4.8/6.8
Application
Machinery
Finish
Blue-White Zinc Plated
Max Body Length
800mm/32in
Transport Package
Carton, Polybag, Barrel
Specification
M5-M20
Trademark
QBH
Origin
Jiaxing City, Zhejiang Province.
HS Code
7318151001
Production Capacity
500 Tons/Month

Packaging & Delivery

Package Size
26.00cm * 26.00cm * 14.00cm
Package Gross Weight
25.000kg

Product Description

Qbh Carriage Bolts DIN603 Cl. 4.8/6.8 M5-M20
Qbh Carriage Bolts DIN603 Cl. 4.8/6.8 M5-M20
Qbh Carriage Bolts DIN603 Cl. 4.8/6.8 M5-M20

Product Description

Product Description

DIN 603 - Mushroom head square neck bolts

Current norm: DIN 603
Equivalent norms: ISO 8677; CSN 021319; PN 82406; UNI 5731;

Product Parameters
 
STYLE CARRIAGE BOLTS
STANDARD DIN603
Model No. QBH-C-DIN603-ZP,
QBH-C-DIN603-HDG
Supplier QBH
SIZE M5-M20
FINIISH PLAIN, BLACK,Z.P., Y.Z.P., H.D.G,. dacromet, 
geomet, nickle plated, machanical zinc plated, ect.
CLASS Cl.4.8/6.8
MATERIAL Low carbon
PACKING bulk/boxes in cartons, bulk in polybags /buckets, ect.
PALLET solid wood pallet, plywood pallet, ton box/bag, ect.
 
Products name Round Head Square Neck Carriage Bolt DIN603 Carbon Steel WZP
Standard: DIN,ASTM/ANSI JIS EN ISO,AS,GB
Model No. QBH-C-DIN603-ZP,
QBH-C-DIN603-HDG
Supplier QBH
Material Stainless Steel: SS201, SS303, SS304, SS316,SS316L,SS904L,F593
Steel Grade: DIN: Gr.4.6,4.8,5.6,5.8,8.8,10.9,12.9;  SAE: Gr.2,5,8;  ASTM: 307A,307B,A325,A394,A490,A449,
Finishing Zinc(Yellow,White,Blue,Black),Hop Dip Galvanized(HDG),Black Oxide,
Geomet,Dacroment,anodization,Nickel plated,Zinc-Nickel plated
Production
Process
M2-M24:Cold Froging,M24-M100 Hot Forging,
Machining and CNC for Customized fastener
Customized Products
Lead time
Busy season:15-30days,Slack seaon:10-15days
Stock Products Steel:4.8Grade DIN6923,8.8Grade 10.9Grade of GB5783 and GB5782
Stainless steel: All DIN Standard stainless steel Bolt
Free Samples for standard fastener
Qbh Carriage Bolts DIN603 Cl. 4.8/6.8 M5-M20

Legend:

b - length of the thread (at least)
l - length of bolt
d - the nominal diameter of the thread
k - head height
ds - diameter of the screw shank
dk - head diameter
f - height squared
v - width of the square
r1 - Head radius
lg - length of the shank to thread
ls - length of the shank to the start of the thread

Makings:

Steel: 4.8,5.8,8.8
Stainless: A2, A4
Thread: 6g

 

Notes:

 

Table according to DIN 603:

dimensions in mm
Thread d M5 M6 M8 M10 M12 M16 M20
Product Name DIN 603 Square Neck Round Head Carriage Bolt
Supplier QBH
P 0,8 1 1,25 1,5 1,75 2 2,5
b l < 125mm 16 18 22 26 30 38 46
125 < l < 200mm 22 24 28 32 36 44 52
l > 200mm - - 41 45 49 57 65
dk max. 13,55 16,55 20,65 24,65 30,65 38,8 46,8
min. 12,45 15,45 19,35 23,35 29,35 37,2 45,2
ds max. 5 6 8 10 12 16 20
min. 4,52 5,52 7,42 9,42 11,3 15,3 19,16
f max. 4,1 4,6 5,6 6,6 8,75 12,9 15,9
min. 2,9 3,4 4,4 5,4 7,25 11,1 14,1
k max. 3,3 3,88 4,88 5,38 6,95 8,95 11,05
min. 2,7 3,12 4,12 4,62 6,05 8,05 9,95
r1 approx. 10,7 12,6 16 19,2 24,1 29,3 33,9
r2 max. 0,5 0,5 0,5 0,5 1 1 1
r3 max. 0,75 0,9 1,2 1,5 1,8 2,4 3
v max. 5,48 6,48 8,58 10,58 12,7 16,7 20,84
min. 4,52 5,52 7,42 9,42 11,3 15,3 19,16


Dimensions

Nom. Dia. (d) M6 M8 M10 M12 M16 M20
Product Name DIN 603 Square Neck Round Head Carriage Bolt
Supplier QBH
Thread Pitch 1 1.25 1.5 1.75 2 2.5
Thread Length (b) L < 125mm 18 22 26 30 38 46
125-200mm 24 28 32 36 44 52
L > 200mm - 41 45 49 57 65
dk Max. 16.55 20.65 24.65 30.65 38.8 46.8
f Max. 4.6 5.6 6.6 8.75 12.9 15.9
k Max. 3.88 4.88 5.38 6.95 8.95 11.05
v Max. 6.48 8.58 10.58 12.7 16.7 20.84
L WEIGHT IN KG/1000 PCS
16 6.90          
20 7.60 13.80 22.70      
25 8.50 15.40 25.20      
30 9.60 17.00 27.70 45.70    
35 10.70 19.00 30.20 49.40    
40 11.80 21.00 32.70 53.10    
45 12.90 23.00 35.80 56.80    
50 14.00 25.00 38.90 61.20 119.00  
55 15.10 26.90 42.00 65.60 126.00  
60 16.20 28.90 45.10 70.00 133.00  
65 17.30 30.90 48.20 74.40 141.00  
70 18.40 32.90 51.30 78.80 149.00 247.00
80 20.60 36.80 57.50 87.00 165.00 272.00
90 22.80 40.80 63.70 96.00 181.00 297.00
100 25.00 44.80 69.90 105.00 197.00 322.00
110 27.20 48.80 76.10 114.00 213.00 347.00
120 29.40 52.80 82.30 123.00 229.00 372.00
130 31.60 56.80 88.50 132.00 245.00 397.00
140 32.80 60.80 95.00 141.00 261.00 422.00
150 35.00 64.80 101.00 150.00 277.00 447.00
160     107.00 159.00 293.00 497.00
180     119.00 177.00 325.00 547.00
200     131.00 195.00 357.00 597.00

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  
Supplier QBH  
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  
Supplier QBH  
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.
b For structural bolting d W M12.
c Nominal values are specified only for the purpose of the designation system for property classes.See Clause 5.
d In cases where the lower yield strength ReL cannot be determined, it is permissible to measure the stress at 0,2 % non-proportional elongation Rp0,2.
e For the property classes 4.8, 5.8 and 6.8 the values for Rpf min are under investigation. The present values are given for calculation of the proof stress ratio only. They are not test values.
f Proof loads are specified in Tables 5 and 7.
g Hardness determined at the end of a fastener shall be 250 HV, 238 HB or 99,5 HRB maximum.
h Surface hardness shall not be more than 30 Vickers points above the measured core hardness of the fastener when determination of both surface hardness and core hardness are carried out with HV 0,3.
i Any increase in hardness at the surface which indicates that the surface hardness exceeds 390 HV is not acceptable.
j Any increase in hardness at the surface which indicates that the surface hardness exceeds 435 HV is not acceptable.
k Values are determined at a test temperature of −20 °C, see 9.14.
l Applies to d W 16 mm. m Value for KV is under investigation.
n Instead of ISO 6157-1, ISO 6157-3 may apply by agreement between the manufacturer and the purchaser.
 
 

QBH 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
 

QBH 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


QBH 10B21
CHEMICAL COMPOSI %
C Si Mn P S Cr B
0.2 0.04 0.81 0.017 0.007 0.017 0.0021


QBH 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

QBH 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

QBH 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


QBH 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
 
Detailed Photos

Qbh Carriage Bolts DIN603 Cl. 4.8/6.8 M5-M20
Qbh Carriage Bolts DIN603 Cl. 4.8/6.8 M5-M20
Qbh Carriage Bolts DIN603 Cl. 4.8/6.8 M5-M20
Qbh Carriage Bolts DIN603 Cl. 4.8/6.8 M5-M20
Qbh Carriage Bolts DIN603 Cl. 4.8/6.8 M5-M20
Qbh Carriage Bolts DIN603 Cl. 4.8/6.8 M5-M20

Certifications & Packaging

Qbh Carriage Bolts DIN603 Cl. 4.8/6.8 M5-M20


Our Services
Professional Manufacturer: All of our Fastener are designed and manufactured according to buyers' 
specification and performance.
Quality is guaranteed: Durability testing and critical technical design to enhance fasteners lifetime.
Cost effective: Competitive prices with professional factory supply
Perfect fastening solution with 15+ years experiences to solve your problem: Wide range of parts selection.
Customized Ideal Fasteners: customized services according to the samples and drawings offered

Free Samples for Standard Fastener from Jiaxing City Qunbang Hardware
We Promise:
1.High quality
2. Competitive price
3. The shortest delivery
4. The fastest response
5. The best service

 

FAQ


FAQ
1.What's your experience like?

Our general manager has been engaged in the export of fasteners since 2005. 
Our team can provide you with professional fasteners selling and smooth export services.

2.How about your price?
High quality products with reasonable price. Please give me a inquire, We will quoted you a price 
for you refer at once.


3. How do you control your quality?
We require the quality control department to inspect every production link of each shipment. And we can provide you MTC and mill certificate when the goods is finished.

4.How about your delivery time?
General speaking, if the goods is in stock, we can delivery them with 2-5days, If the quantity is 1-2container, we can give you with 18-25days,if the quantity is more than 2 container and you are very urgent, we can let factory priority 
produce your goods.


5.What is your packing?
Our packing is 20-25kg for one carton,36 or 48pcs cartons for one pallet. One pallets is about 900-960kg, We also can make customer's logo on the cartons. Or we customized cartons according to 
customers' requirement.


6.What is your payment term?
We can accept T/T,LC for general order ,Paypal and Western union for small order or samples order. 



Awaiting for your kind inquiry! Thanks & best regards!
For more information:  http://qbfastener.en.made-in-china.com

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