Qbh OEM ODM Service Bulkbuy Wholesale Standard Non-Standard Customized Spare Parts Wood Coach Grub Locking Srcews

Product Details
Customization: Available
Material: Carbon Steel
Type: Hexagon Head
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Plant Area
>2000 square meters
Management System Certification
ISO 9001
  • Qbh OEM ODM Service Bulkbuy Wholesale Standard Non-Standard Customized Spare Parts Wood Coach Grub Locking Srcews
  • Qbh OEM ODM Service Bulkbuy Wholesale Standard Non-Standard Customized Spare Parts Wood Coach Grub Locking Srcews
  • Qbh OEM ODM Service Bulkbuy Wholesale Standard Non-Standard Customized Spare Parts Wood Coach Grub Locking Srcews
  • Qbh OEM ODM Service Bulkbuy Wholesale Standard Non-Standard Customized Spare Parts Wood Coach Grub Locking Srcews
  • Qbh OEM ODM Service Bulkbuy Wholesale Standard Non-Standard Customized Spare Parts Wood Coach Grub Locking Srcews
  • Qbh OEM ODM Service Bulkbuy Wholesale Standard Non-Standard Customized Spare Parts Wood Coach Grub Locking Srcews
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Basic Info.

Model NO.
QBH-Screw
Connection
Common Bolt
Head Style
Hexagonal
Standard
DIN, GB, ANSI, JIS, DIN, ASME, Ifi, as, ISO
Application 1
Furniture Screw
Application 2
Screw Fastener
Standard 1
DIN571
Item
Self Tapping Screw
Transport Package
25kg/Carbon
Specification
M3-M30
Trademark
QBH
Origin
China
HS Code
73181600
Production Capacity
300ton/Montth

Packaging & Delivery

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

Product Description


Qbh OEM ODM Service Bulkbuy Wholesale Standard Non-Standard Customized Spare Parts Wood Coach Grub Locking Srcews
Qbh OEM ODM Service Bulkbuy Wholesale Standard Non-Standard Customized Spare Parts Wood Coach Grub Locking Srcews

DIN571 Carbon Steel Wzp Hexagonal & Bugle Head Wood Self Tapping Screw Coil Ring Nail
Qbh OEM ODM Service Bulkbuy Wholesale Standard Non-Standard Customized Spare Parts Wood Coach Grub Locking SrcewsLegend:

b - length of the thread (at least)
l - length of bolt
k - head height
e - the diameter of the circumscribed circle (not less than)
s - size hex head turnkey


Qbh OEM ODM Service Bulkbuy Wholesale Standard Non-Standard Customized Spare Parts Wood Coach Grub Locking SrcewsQbh OEM ODM Service Bulkbuy Wholesale Standard Non-Standard Customized Spare Parts Wood Coach Grub Locking Srcews
Qbh OEM ODM Service Bulkbuy Wholesale Standard Non-Standard Customized Spare Parts Wood Coach Grub Locking SrcewsQbh OEM ODM Service Bulkbuy Wholesale Standard Non-Standard Customized Spare Parts Wood Coach Grub Locking Srcews
Qbh OEM ODM Service Bulkbuy Wholesale Standard Non-Standard Customized Spare Parts Wood Coach Grub Locking Srcews

Anchor Screw ( Please Click the Following Picture)

Qbh OEM ODM Service Bulkbuy Wholesale Standard Non-Standard Customized Spare Parts Wood Coach Grub Locking Srcews

Qbh OEM ODM Service Bulkbuy Wholesale Standard Non-Standard Customized Spare Parts Wood Coach Grub Locking Srcews

Makings:QBH

Steel: steel
Stainless: A2, A4
Plastic: -
Non Ferrous: -
Thread: as DIN 7998


Table according to DIN 571:

Thread 4 5 6 -7 8 10 12 16 20
ds nominal
size max.
4 5 6 7 8 10 12 16 20
min. 3,52 4,52 5,52 6,42 7,42 9,42 11,3 15,3 19,3
da max. 5 6 7,2 8,2 10,2 12,2 15,2 19,2 24,4
k nominal
size
2,8 3,5 4 5 5,5 7 8 10 13
max. 3,1 3,88 4,38 5,38 5,88 7,45 8,45 10,45 13,9
min. 2,5 3,13 3,63 4,63 5,13 6,55 7,55 9,55 12,1
s nominal
size
7 8 10 12 13 17 19 24 30
max. 7 8 10 12 13 17 19 24 30
min. 6,64 7,64 9,64 11,57 12,57 16,57 18,48 23,16 29,16
e min. 7,5 8,63 10,89 13,07 14,2 18,72 20,88 26,17 32,95
l   weight kg/1000pcs
nominal
size
min. max.
16 15,1 16,9 1,71 292              
20 18,95 21,05 2,01 3,42 5,02            
25 23,95 26,05 2,41 4,02 5,82   11,5        
30 28,95 31,05 2,81 4,62 6,62   12,9 23,6      
35 33,75 36,25 3,11 5,12 7,42   14,2 25,8 36,2    
40 38,75 41,25 3,51 5,82 8,22   15,6 28 39,2    
45 43,75 46,25     8,94   16,9 30 42,1    
50 48,75 51,25     9,64   18,2 32,1 45,4 84,1  
55 53,5 56,5     10,5   19,6 34,3 48,6 89,7  
60 58,5 61,5     11,2   20,9 36,5 51,8 94,9 165
65 63,5 66,5         22,2 38,5 54,7 99,5 174
70 68,5 71,5         23,6 40,7 57,8 107 182
75 73,5 76,5         25 42,9 61 112 192
80 78,5 81,5         26,5 45,2 64,5 118 201
90 88,25 91,75         29,4 49,9 71 130 220
100 98,25 101,75         32 54 77,1 141 238
110 108,25 111,75             83,4 152 253
120 118,25 121,75             89,5 163 275
130 128 132               175 293
140 138 142               187 317
150 148 152               198 328
160 158 162               209 348
170 168 172                 366
180 178 182                 385
190 187,7 192,3                 404
200 197,7 202,3                 421
 

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.
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.

 

 

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


Qbh OEM ODM Service Bulkbuy Wholesale Standard Non-Standard Customized Spare Parts Wood Coach Grub Locking SrcewsQbh OEM ODM Service Bulkbuy Wholesale Standard Non-Standard Customized Spare Parts Wood Coach Grub Locking Srcews

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


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
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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