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    2. DIN 938 Short End Stud Bolts

    DIN 938 Studs Standard

    Short Engagement End Studs Built for Reliable Bolted Joints in Pressure and Structural Applications

    DIN 938 studs feature a short engagement thread of 1 times the nominal diameter on one end and a standard nut end on the opposite side, making them well suited for applications where the stud is screwed into a parent material rather than used with two nuts. When manufactured from EN 10269 certified alloy and heat-resistant steels, DIN 938 studs deliver reliable clamping force in machinery, pressure vessels, and structural assemblies that operate under sustained or cyclic loading. For applications requiring a longer engagement thread, DIN 939 studs offer a 1.25d alternative, while complete flange bolting systems can be referenced under DIN 2510 studs. Industries including heavy engineering, energy, and petrochemicals rely on these studs alongside ISO 4032 nuts for bolted connections that must hold without relaxation across long service intervals.

    DIN 938 Double End Stud Bolts with Thread Engagement Length Equals to 1 x Diameter
    Studs With Engagement Length

    DIN 938 Dimensions

    Size (d) bm a b c x1d x2d Shank Dia (Ds)
    Max Min.
    DIN 938 – M3 3 12 18 - 1 1 3 2.98
    DIN 938 – M4 4 14 20 - 2 1 4 3.98
    DIN 938 – M5 5 16 22 - 2 1 5 4.98
    DIN 938 – M6 6 18 24 - 3 1 6 5.98
    DIN 938 – M7 7 20 26 - 3 1 7 6.97
    DIN 938 – M8 8 22 28 - 3 2 8 7.97
    DIN 938 – M10 10 26 32 45 4 2 10 9.97
    DIN 938 – M12 12 30 36 49 4 2 12 11.97
    DIN 938 – M14 14 34 40 53 5 3 14 13.97
    DIN 938 – M16 16 38 44 57 5 3 16 15.97
    DIN 938 – M18 18 42 48 61 6 3 18 17.97
    DIN 938 – M20 20 46 52 65 6 3 20 19.96
    DIN 938 – M22 22 50 56 69 6 3 22 21.96
    DIN 938 – M24 24 54 60 73 8 4 24 23.96
    DIN 938 – M27 27 60 66 79 8 4 27 26.96
    DIN 938 – M30 30 66 72 85 9 5 30 29.96
    DIN 938 – M33 33 72 78 91 9 5 33 32.95
    DIN 938 – M36 36 78 84 97 10 5 36 35.95
    DIN 938 – M39 39 84 90 103 10 5 39 38.95
    DIN 938 – M42 42 90 96 109 11 6 42 41.95
    DIN 938 – M45 45 96 102 115 11 6 45 44.95
    DIN 938 – M48 48 102 108 121 13 6 48 47.95
    DIN 938 – M52 52 110 116 129 13 6 52 51.95

    DIN 938 Double End Stud Length Tolerance as per ISO 4759-1 Product Grade A IT13(h13)

    Nominal Dimension Range (mm) JS15 Tolerance (± mm)
    > 0 – 3 ±0.12
    > 3 – 6 ±0.16
    > 6 – 10 ±0.20
    > 10 – 18 ±0.26
    > 18 – 30 ±0.32
    > 30 – 50 ±0.40
    > 50 – 80 ±0.50
    > 80 – 120 ±0.63
    > 120 – 180 ±0.80
    > 180 – 250 ±1.00
    > 250 – 315 ±1.25
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