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316 Stainless Steel Hex Head Bolts DIN 931 Featured Image
  • 316 Stainless Steel Hex Head Bolts DIN 931

316 Stainless Steel Hex Head Bolts DIN 931

Overview:

AYA Fasteners’ 316 stainless steel hex bolts are engineered for extreme environments, offering exceptional corrosion resistance and durability. Made from 316 stainless steel, these bolts are well-known for their exceptional corrosion resistance, particularly against chlorides and acidic substances. This makes them an ideal choice for industries where exposure to harsh chemicals, saltwater, or extreme weather conditions is common. The hex head design ensures easy installation and removal, providing a secure and reliable connection for critical applications.


Specifications

Dimension Table

Why AYA

Product Description

Commodity 316Stainless Steel Hex Head Bolts
Material Made from 316 stainless steel, these screws have excellent resistance to chemicals and salt water. They may be mildly magnetic.They are also known as A4 stainless steel
Head Type Hex Head
Length Is measured from under the head
Thread Type  Coarse Thread, Fine Thread.Coarse threads are the industry standard; choose these screws if you don't know the pitch or threads per inch. Fine and extra-fine threads are closely spaced to prevent loosening from vibration; the finer the thread, the better the resistance
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Applications of 316 Stainless Steel Hex Head Bolts
316 Stainless Steel Hex Head Bolts are widely used in industries that require superior corrosion resistance and reliability.
In marine engineering, they are essential for constructing ships, offshore platforms, and coastal infrastructure.
In the chemical industry, they are used in pipelines, reactors, and storage tanks where exposure to corrosive substances is inevitable.
In the food and beverage industry, also relies on these bolts for equipment that requires frequent cleaning and exposure to moisture.
Additionally, they are used in pharmaceutical manufacturing, wastewater treatment plants, and architectural projects where both durability and aesthetics are important.

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    Thread Size M1.6 M2 M2.5 M3 (M3.5) M4 M5 M6 (M7) M8 M10 M12
    d
    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 - - - - - - - - - - - -

     

    Thread Size (M14) M16 (M18) M20 (M22) M24 (M27) M30 (M33) M36 (M39)
    d
    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

     

    Screw Thread (M68) M72 (M76) M80 M90 M100 M110 M125 M140 M160
    d
    P Pitch 6 6 6 6 6 6 6 6 6 6
    b 125＜L≤200 148 156 164 172 192 - - - - -
    L＞200 161 169 177 185 205 225 245 275 305 345
    c min 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4
    max 1 1 1 2 2 2 2 2 2 2
    da max 75 79 83 87 97 107 117 132 147 167
    ds max=nominal size 68 72 76 88 90 100 110 125 140 160
    min 67.26 71.26 75.26 79.26 89.13 99.13 109.13 124 139 159
    dw min 92.9 97.7 102.1 106.9 121.1 135.4 144.9 168.6 185.6 214.1
    e min 110.51 116.16 121.81 127.46 144.08 161.02 172.32 200.57 220.8 254.7
    k Nominal Size 43 45 48 50 57 63 69 79 88 100
    min 42.5 44.5 47.5 49.5 56.4 62.4 68.4 78.4 87.3 99.3
    max 43.5 45.5 48.5 50.5 57.6 63.6 69.6 79.6 88.7 100.7
    k1 min 29.8 31.2 33.2 34.6 40.3 43.7 47.9 54.9 61.1 69.5
    r min 2 2 2 2 2.5 2.5 2.5 2.5 2.5 2.5
    s max=nominal size 100 105 110 115 130 145 155 180 200 230
    min 97.8 102.8 107.8 112.8 127.5 142.5 152.5 177.5 195.4 225.4

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