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DIN961 Fine Full Thread 8.8 M64 Metric Hex Cap Screws

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DIN961 Fine Full Thread 8.8 M64 Metric Hex Cap Screws

Brand Name : QBH

Model Number : DIN961

Certification : ISO9001

Place of Origin : CHINA

MOQ : 900kg

Price : Negotiation

Payment Terms : L/C, T/T

Supply Ability : 500TON/MONTH

Delivery Time : 30DAYS

Packaging Details : 25KG/CTN,36CTN/PALLET or small packing

Standard : DIN961

Material : Carbon Steel

Size : M6-M64

Finish : ZP YZP HDG BLACK

Grade : 4.8 6.8 8.8 10.912.9

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

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Specification

DIN 961 Hex Head Cap Screws are fully threaded and have fine or extra fine external machine screw threads (the distance from thread to thread is less than for coarse threads). Having dimensions that are similar to ISO 8675, use with tapped holes and nuts. Class 8.8 and 10.9 steel are available; zinc plating provides corrosion protection while plain finish is unplated and can rust. The thread tolerance of Class 8.8 and 10.9 is 6g for plain finish and 6h for plated; right-hand threads are standard. Sometimes called hex head bolts and tap bolts, the length of the bolt is measured from under the head to the tip. DIN 961 Hex Head Cap Screws are similar to ISO 8675 and JIS B1180. For comparison, DIN 960 is partially threaded and DIN 933 is fully threaded but has coarse threads.

DIN 961 - Hexagon head bolts with fine thread up to head

Current norm: DIN EN 24017
Equivalent norms: ISO 4017; CSN 021103; PN 82105; UNI 5739; EU 24017

DIN961 Fine Full Thread 8.8 M64 Metric Hex Cap Screws

Legend:

l - length of bolt
d - the nominal diameter of the thread
k - head height
r - radius
e - the diameter of the circumscribed circle (not less than)
s - size hex head turnkey
c - thickness of the mounting collar
a - length undercut

Makings:QBH

Steel: 5.6,5.8,8.8,10.9,12.9
Stainless: A2,A4
Plastic: Plastic Pa
Non Ferrous: Brass
Thread: 6g

Table according to DIN 961

Screw Thread
d
M8 M10 M12 M14 M16 M18 M20 M22 M24
P Pitch Fine thread-1
Fine thread-2
a max
c min
max
da max
dw Grade A min
Grade B min
e Grade A min
Grade B min
k Nominal Size
Grade A min
max
Grade B min
max
k1 min
r min
s max=nominal size
Grade A min
Grade B min
1 1 1.5 1.5 1.5 2 1.5 2 2
- 1.25 1.25 - - 1.5 2 1.5 1.5
3 3.75 4.5 4.5 4.5 6 6 6 6
0.15 0.15 0.15 0.15 0.2 0.2 0.2 0.2 0.2
0.6 0.6 0.6 0.6 0.8 0.8 0.8 0.8 0.8
9.2 11.2 13.7 15.7 17.7 20.2 22.4 24.4 26.4
11.6 15.6 17.4 20.5 22.5 25.3 28.2 30 33.6
11.4 15.4 17.2 20.1 22 24.8 27.7 29.5 33.2
14.38 18.9 21.1 24.49 26.75 30.14 33.53 35.72 39.98
14.2 18.72 20.88 23.91 26.17 29.56 32.95 35.03 39.55
5.3 6.4 7.5 8.8 10 11.5 12.5 14 15
5.15 6.22 7.32 8.62 9.82 11.28 12.28 13.78 14.78
5.45 6.58 7.68 8.98 10.18 11.72 12.72 14.22 15.22
5.06 6.11 7.21 8.51 9.71 11.15 12.15 13.65 14.65
5.54 6.69 7.79 9.09 10.29 11.85 12.85 14.35 15.35
3.54 4.28 5.05 5.96 6.8 7.8 8.5 9.6 10.3
0.4 0.4 0.6 0.6 0.6 0.6 0.8 0.8 0.8
13 17 19 22 24 27 30 32 36
12.73 16.73 18.67 21.67 23.67 26.67 29.67 31.61 35.38
12.57 16.57 18.48 21.16 23.16 26.16 29.16 31 35
Weight of per 1000 steel products(≈kg)
- - - - - - - - -
Screw Thread
d
M27 M30 M33 M36 M39 M42 M45 M48 M52
P Pitch Fine thread-1
Fine thread-2
a max
c min
max
da max
dw Grade A min
Grade B min
e Grade A min
Grade B min
k Nominal Size
Grade A min
max
Grade B min
max
k1 min
r min
s max=nominal size
Grade A min
Grade B min
2 2 2 3 3 3 3 3 3
- - - - - - - - -
6 6 6 9 9 9 9 9 9
0.2 0.2 0.2 0.2 0.3 0.3 0.3 0.3 0.3
0.8 0.8 0.8 0.8 1 1 1 1 1
30.4 33.4 36.4 39.4 42.4 45.6 48.6 52.6 56.6
- - - - - - - - -
38 42.7 46.6 51.1 55.9 59.9 64.7 69.4 74.2
- - - - - - - - -
45.2 50.85 55.37 60.79 66.44 71.3 76.95 82.6 88.25
17 18.7 21 22.5 25 26 28 30 33
- - - - - - - - -
- - - - - - - - -
16.65 18.28 20.58 22.08 24.58 25.58 27.58 29.58 32.5
17.35 19.12 21.42 22.92 25.42 26.42 28.42 30.42 33.5
11.7 12.8 14.4 15.5 17.2 17.9 19.3 20.9 22.8
1 1 1 1 1 1.2 1.2 1.6 1.6
41 46 50 55 60 65 70 75 80
- - - - - - - - -
40 45 49 53.8 58.8 63.1 68.1 73.1 78.1

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

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.


Product Tags:

DIN961 Metric Hex Cap Screws

      

8.8 Metric Hex Cap Screws

      

6.8 Full Thread Socket Head Cap Screw

      
Wholesale DIN961 Fine Full Thread 8.8 M64 Metric Hex Cap Screws from china suppliers

DIN961 Fine Full Thread 8.8 M64 Metric Hex Cap Screws Images

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