DIN 931 is a German standard that specifies the design and dimensions of hex head bolts with partial threads. These bolts are commonly referred to as hex bolts or hexagon head bolts and are widely used in various industrial and construction applications. Here are some key features and details of DIN 931 hex bolts:


Din 931 Hexagon Bolt, Din 931 Hex Bolts, DIN 931 Hex Bolt Dimensions, Hexagon Head Bolt (DIN 931), Manufacturer Of Din 931 Heavy Hex Bolts, Din 931 Hex Bolts Manufacturers in India.


DIN 931 Hex Bolts
  • UNS

    C63000

  • ASTM / ASME

    ASTM B150 / ASME SB150

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Din 931 Hex Bolt Manufacturers, DIN 931 Heavy Hex Head Bolt Stockist, Grade A Hexagon Head Bolts Suppliers, Grade B Hexagon Head Bolts, DIN 931 Hex Shoulder Bolt.


Features of DIN 931 Hex Bolts:

  • Material: Hex bolts according to DIN 931 can be made from various materials, including carbon steel, alloy steel, stainless steel, and other materials, depending on the application requirements. The choice of material depends on factors such as strength, corrosion resistance, and environmental conditions.
  • Thread Type: DIN 931 hex bolts have metric threads with a partial thread design. The partial threading leaves an unthreaded portion under the head, which provides a clamping area when fastening.
  • Hex Head: These bolts have a hexagonal head, which is designed for use with a wrench or socket for tightening and loosening.
  • Length: DIN 931 specifies the overall length of the bolt, including the threaded and unthreaded portions. The length can vary depending on the specific design and application requirements.
  • Thread Length: The standard provides information about the length of the threaded section, which can also vary according to the design and application needs.
  • Thread Tolerance: DIN 931 includes information about thread tolerances, ensuring the compatibility of the bolts with nuts and threaded holes.


Stainless Steel DIN 931 Hex Bolts, DIN 931 High Strength Hex Bolts, DIN 931 Partially Threaded Hex Bolts, SS DIN 931 Fully Threaded Hex Bolts Hex Bolts, UNS C63000 Hex Bolts, DIN 931 Hex Bolt Manufacturers in India.


fevicon-logo DIN 931 Hex Bolts Specification

SpecificationsASTM B150 / ASME SB150
StandardISO, ASTM, DIN, JIS, IS, GB, BS, and all International Standards
DiameterM3 to M100 up to 1000 MM
DIN StandardB.S. DIN 931, DIN 933, DIN 912, DIN 934, DIN 6923, DIN 603, DIN 7981, DIN 970, DIN916, DIN 7982, DIN 7985, DIN 913
UTS NPT, UNS, UNF, UNC, UNEF, NPTF
ISO ISO 4033, ISO 4032, ISO 7380, ISO 4017, JIS standards
Threads UNF, BSW, BSF, METRIC, UNC, or as required
Surface CoatingBlack Oxide, Cadmium, Galvanized, Teflon, Xylan, Zinc, Others Upon Request
Manufacturing ProcessWire Drawing, Cold Heading, Insert tapping, Heat Treatment, Surface Plating, Inspection, Packing.

Typical Applications: DIN 931 hex bolts are used in a wide range of industrial and construction applications, including but not limited to:

  • General Fastening: These bolts are employed in general fastening applications, such as securing machinery, equipment, and structural components.
  • Construction and Structural Engineering: Hex bolts are used to join and secure structural components in the construction and engineering industries.
  • Automotive Industry: They are used in the automotive sector for assembling various components, including engines, chassis, and suspension systems.
  • Machinery and Equipment Assembly: Hex bolts are employed in machinery and equipment assembly, ensuring a secure and adjustable connection.
  • Manufacturing and Maintenance: These bolts find use in manufacturing processes and maintenance applications for fastening and securing parts.
  • Piping and Flange Connections: In piping systems and flange connections, hex bolts are used to join pipe sections, valves, and flanges.
  • Oil and Gas Industry: Hex bolts are used in the oil and gas sector for connecting pipeline components, valves, and equipment.
  • Aerospace and Defense: In the aerospace and defense industries, hex bolts are used for precision fastening in critical components.


When selecting DIN 931 hex bolts for a specific application, it's important to consider factors such as material, size, length, and thread pitch to ensure they meet safety and performance requirements. Thread tolerance and compatibility with nuts or threaded holes are also critical considerations.


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fevicon-logo DIN 931 Hex Bolt Dimensions

Size Width Across Flat (s) Head Height (k) Thread Length
DIN 931 ISO 4014 DIN 931 ISO 4014 DIN 931 Length (in MM) ISO 4014 Length (in MM)
Min Max Min Max Min Max Min Max ≥125 >125≥200 ≥200 ≥125 >125≥200 ≥200
M2 3.82 4.00 3.82 4.00 1.28 1.52 1.275 1.525 10 - - 10 - -
M3 5.32 5.50 5.32 5.50 1.88 2.12 1.875 2.125 12 - - 12 - -
M4 6.78 7.00 6.78 7.00 2.68 2.92 2.675 2.925 14 - - 14 - -
M5 7.78 8.00 7.78 8.00 3.35 3.65 3.35 3.65 16 22 - 16 - -
M6 9.78 10.00 9.78 10.00 3.85 4.15 3.85 4.15 18 24 - 18 - -
M8 12.73 13.00 12.73 13.00 5.15 5.45 5.15 5.45 22 28 41 22 - -
M10 16.73 17.00 15.73 16.00 6.22 6.58 6.22 6.58 26 32 45 26 - -
M12 18.67 19.00 17.73 18.00 7.32 7.68 7.32 7.68 30 36 49 30 - -
M14 21.67 22.00 20.67 21.00 8.62 8.98 8.62 8.98 34 40 53 34 40 -
M16 23.67 24.00 23.67 24.00 9.82 10.2 9.82 10.18 38 44 57 38 44 -
M18 26.67 27.00 26.67 27.00 11.28 11.7 11.285 11.715 42 48 61 42 48 -
M20 29.67 30.00 29.67 30.00 12.28 12.7 12.285 12.715 46 52 65 46 52 -
M22 31.61 32.00 33.38 34.00 13.78 14.2 13.785 14.215 50 56 69 50 56 69
M24 35.38 36.00 35.38 36.00 14.78 15.2 14.785 15.215 54 60 73 54 60 73
M27 40.00 41.00 40.00 41.00 16.65 17.4 16.65 17.35 60 66 79 60 66 79
M30 45.00 46.00 45.00 46.00 18.28 19.1 18.28 19.12 66 72 85 66 72 85
M33 49.00 50.00 49.00 50.00 20.58 21.4 20.58 21.42 72 78 91 - 78 91
M36 53.80 55.00 53.80 55.00 22.08 22.9 22.08 22.92 78 84 97 - 84 97
M39 58.80 60.00 58.80 60.00 24.58 25.4 24.58 25.42 84 90 103 - 90 103
M42 63.10 65.00 63.10 65.00 25.58 26.4 25.58 26.42 90 96 109 - 96 109
M45 68.10 70.00 68.10 70.00 27.58 28.4 27.58 28.42 96 102 115 - 102 115
M48 73.10 75.00 73.10 75.00 29.58 30.4 29.58 30.42 102 108 121 - 108 121
M52 78.10 80.00 78.10 80.00 32.5 33.5 32.5 33.5 - 116 129 - 116 129
M56 82.80 85.00 82.80 85.00 34.5 35.5 34.5 35.5 - 124 137 - - 137
M60 87.80 90.00 87.80 90.00 37.5 38.5 37.5 38.5 - 132 145 - - 145
M64 92.80 95.00 92.80 95.00 39.5 40.5 39.5 40.5 - 140 153 - - 153
M72 102.80 105.00 -- -- 44.5 45.5 -- -- - 156 169 - - -

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SS Din 931 Hex Bolt

Heavy Hex Bolt

Metric DIN 931 Hexagon Heavy Bolt

Hex Tap Bolt

DIN 931 Hex Tap Bolt

Hex Flange Bolt

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Half Threaded Hex Bolt

SS DIN 931 Half Threaded Hex Bolt

Fully Threaded Hex Bolt

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Hex Machine Bolt

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Hex Shoulder Bolt

SS Din 931 Hex Shoulder Bolt


Hex Bolt Manufacturers In India

  • Hardness testing to ISO 6508-1

  • Nut proof load testing to ISO 898-2

  • Suitability for preloading to EN 14399-2

  • Calibrated gauges and tools


fevicon-logo Other Types Of DIN 931 Hex Bolts

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fevicon-logo Alloy 20 Hex Bolts Application Industries

Aerospace Industry
Nuclear Industry
MEdical Industry
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Mining Industry
Automotive Industry
Construction Industry
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