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Partially Threaded Hexagon Head Bolts Blackened Carbon Steel DIN931-1 ISO EN 4014

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Partially Threaded Hexagon Head Bolts Blackened Carbon Steel DIN931-1 ISO EN 4014

Brand Name : YingYan

Model Number : M5-M42

Certification : ISO9000

Place of Origin : JIANG SU PROVINCE CHINA

MOQ : 1000pieces

Price : Negotiable

Packaging Details : Small Boxes, Plastic Bags, Bulk in Cartons,

Name : Hexagon head bolts partially threaded

Standard : GB/DIN/ASME/EN/ISO&etc.

Materials : Alloy steel ML 40Cr 40Cr/Carbon steel 35K

Surface treatment : Plain, black, zinc plated/according to your requirement

Grade : 8.8/10.9/12.9

Head type : Hexagonal Head

Surface : Black

Size : M5-M42/According your requirements

Length : 30mm-400mm/According your requirements

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DIN931-1 ISO EN 4014 Hexagon Head Bolts Partially Threaded Blackened Carbon Steel/Alloy Steel Class 8.8 10.9 12.9

Advantages:

  1. Corrosion Resistance: The blackening process creates a dense oxide film on the bolt surface, providing excellent corrosion resistance and preventing rusting in damp or corrosive environments.

  2. Wear Resistance: Blackened bolts exhibit increased surface hardness, improving their wear resistance and enabling them to maintain good performance in frequently rubbed environments.

  3. Aesthetic Appeal: The blackened surface of the bolts gives them a unique and attractive appearance, making them suitable for use in applications where aesthetics are important.

  4. Cost-Effectiveness: Blackening is a cost-efficient surface treatment method, offering better value for money compared to other surface treatments such as zinc plating or painting.

Characteristics:

  1. Uniformity: The blackened surface of the bolts is evenly colored, with no significant color differences or spots, ensuring an overall aesthetic appeal.

  2. Stability: The oxide film formed during blackening is stable and does not easily peel off or discolor, guaranteeing the durability of the bolts.

  3. Environmental Friendliness: The blackening process does not generate harmful substances and meets environmental protection requirements.

Applications:

DIN 931-1 blackened bolts are widely used in various fields such as mechanical equipment, architectural structures, automotive manufacturing, and more. They are particularly common in applications where corrosion resistance, wear resistance, and aesthetics are critical. For example, in chemical equipment, bolts with excellent corrosion resistance are needed due to the corrosive nature of the media. In automotive manufacturing, bolts with good wear resistance are required for components like engines and transmissions. And in architectural structures, bolts with high strength and stability are essential to bear significant loads.

Partially Threaded Hexagon Head Bolts Blackened Carbon Steel DIN931-1 ISO EN 4014

Thread Size
d		 M1.6 M2 M2.5 M3 (M3.5) M4 M5 M6 (M7) M8 M10 M12
P Thread Pitch 0.35 0.4 0.45 0.5 0.6 0.7 0.8 1 1 1.25 1.5 1.75
b Ref. L≤125 9 10 11 12 13 14 16 18 20 22 26 30
125＜L≤200 - - - - - - 22 24 26 28 32 36
L＞200 - - - - - - - - - - 45 49
c min 0.1 0.1 0.1 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15
max 0.25 0.25 0.25 0.4 0.4 0.4 0.5 0.5 0.5 0.6 0.6 0.6
da max 2 2.6 3.1 3.6 4.1 4.7 5.7 6.8 7.8 9.2 11.2 13.7
ds max=nominal size 1.6 2 2.5 3 3.5 4 5 6 7 8 10 12
min Grade A 1.46 1.86 2.36 2.86 3.32 3.82 4.82 5.82 6.78 7.78 9.78 11.73
Grade B - - - - - - - - - - - -
dw min Grade A 2.4 3.2 4.1 4.6 5.1 5.9 6.9 8.9 9.8 11.6 15.6 17.4
Grade B - - - - - - - - - - - -
e min Grade A 3.41 4.32 5.45 6.01 6.58 7.66 8.79 11.05 12.12 14.38 18.9 21.1
Grade B - - - - - - - - - - - -
k Nominal Size 1.1 1.4 1.7 2 2.4 2.8 3.5 4 4.8 5.3 6.4 7.5
Grade A min 0.98 1.28 1.58 1.88 2.28 2.68 3.35 3.85 4.65 5.15 6.22 7.32
max 1.22 1.52 1.82 2.12 2.52 2.92 3.65 4.15 4.95 5.45 6.58 7.68
Grade B min - - - - - - - - - - - -
max - - - - - - - - - - - -
k1 min 0.7 0.9 1.1 1.3 1.6 1.9 2.28 2.63 3.19 3.54 4.28 5.05
r min 0.1 0.1 0.1 0.1 0.1 0.2 0.2 0.25 0.25 0.4 0.4 0.6
s max=nominal size 3.2 4 5 5.5 6 7 8 10 11 13 17 19
min Grade A 3.02 3.82 4.82 5.32 5.82 6.78 7.78 9.78 10.73 12.73 16.73 18.67
Grade B - - - - - - - - - - - -
Length of Thread b - - - - - - - - - - - -

Thread Size
d		 (M14) M16 (M18) M20 (M22) M24 (M27) M30 (M33) M36 (M39)
P Thread Pitch 2 2 2.5 2.5 2.5 3 3 3.5 3.5 4 4
b Ref. L≤125 34 38 42 46 50 54 60 66 72 78 84
125＜L≤200 40 44 48 52 56 60 66 72 78 84 90
L＞200 53 57 61 65 69 73 79 85 91 97 103
c min 0.15 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3
max 0.6 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 1
da max 15.7 17.7 20.2 22.4 24.4 26.4 30.4 33.4 36.4 39.4 42.4
ds max=nominal size 14 16 18 20 22 24 27 30 33 36 39
min Grade A 13.73 15.73 17.73 19.67 21.67 23.67 - - - - -
Grade B - 15.57 17.57 19.48 21.48 23.48 26.48 29.48 32.38 35.38 38.38
dw min Grade A 20.5 22.5 25.3 28.2 30 33.6 - - - - -
Grade B - 22 24.8 27.7 29.5 33.2 38 42.7 46.6 51.1 55.9
e min Grade A 24.49 26.75 30.14 33.53 35.72 39.98 - - - - -
Grade B - 26.17 29.56 32.95 35.03 39.55 45.2 50.85 55.37 60.79 66.44
k Nominal Size 8.8 10 11.5 12.5 14 15 17 18.7 21 22.5 25
Grade A min 8.62 9.82 11.28 12.28 13.78 14.78 - - - - -
max 8.98 10.18 11.72 12.72 14.22 15.22 - - - - -
Grade B min - 9.71 11.15 12.15 13.65 14.65 16.65 18.28 20.58 22.08 24.58
max - 10.29 11.85 12.85 14.35 15.35 17.35 19.12 21.42 22.92 25.42
k1 min 5.96 6.8 7.8 8.5 9.6 10.3 11.7 12.8 14.4 15.5 17.2
r min 0.6 0.6 0.6 0.8 0.8 0.8 1 1 1 1 1
s max=nominal size 22 24 27 30 32 36 41 46 50 55 60
min Grade A 21.67 23.67 26.67 29.67 31.61 35.38 - - - - -
Grade B - 23.16 26.16 29.16 31 35 40 45 49 53.8 58.8
Length of Thread b - - - - - - - - - - -


Product Tags:

Partially Threaded Hexagon Head Bolts

      

Carbon Steel Hexagon Head Bolts

      

DIN931-1 Flanged Hexagon Bolts

      
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