Hardness testing to ISO 6508-1
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DIN 939 Stud Bolts is a German standard that specifies the design and dimensions of metric stud bolts. Stud bolts, also known as threaded rods, are fasteners used to secure two components or parts together in a wide range of industrial applications. DIN 939 specifically covers stud bolts with a reduced shank and fine pitch threads. Here are some key features and details of DIN 939 stud bolts:
Features of DIN 939 Stud Bolts:
Material: Stud bolts according to DIN 939 can be made from various materials, including carbon steel, alloy steel, stainless steel, and other materials, depending on the application requirements.
Thread Type: These stud bolts typically have metric fine (MF) threads, which are finer than metric coarse threads, providing a tighter thread fit.
Reduced Shank: DIN 939 stud bolts have a reduced shank portion that allows for a more controlled and precise fit in the assembly, reducing the risk of stress concentration.
Threaded Ends: The stud bolts have threads on both ends, which allow them to be screwed into two components or parts for secure fastening.
Specifications | ASTM B473 / ASME SB473 |
Dimensions | DIN / ISO / ASME / ANSI / UNI / BS / BIS / SAE, etc. |
Threads | UNC, UNF, UNEF, UN, Coarse, Fine & BSW. |
Type | All Thread, Double End, Single End |
Diameter | 1/4"-3" Matric:M3 to M72 in length 3000mm |
Construction | Hot Forged, Cold Forged, Bar Stock Machined |
Surface Finish | Self Color, Hot Dip Galvanized, Electro Galvanized, Di-Chromated, P.T.F.E. Coated or any other as per order requirement |
Thread Length: DIN 939 specifies the length of the threaded sections on both ends, which can vary depending on the specific design and application requirements.
Thread Tolerance: The standard provides information about thread tolerances, ensuring the compatibility of the stud bolts with nuts and threaded holes.
Typical Applications: DIN 939 stud bolts are used in various industrial applications, including but not limited to:
Machinery and Equipment Assembly: These stud bolts are employed in the assembly of machinery and equipment where a reliable and adjustable connection is required.
Construction and Structural Engineering: Stud bolts are used to secure structural components, such as beams, columns, and steel structures, where precise alignment and load-bearing capacity are crucial.
Automotive Industry: They find use in vehicle assembly for connecting various components, including engines, chassis, and suspension systems, where precise alignment and secure fastening are essential.
Manufacturing and Maintenance: Stud bolts are used in general manufacturing and maintenance applications for fastening and securing parts together, often in situations where adjustability and load-bearing capacity are required.
Piping and Flange Connections: In industrial piping systems and flange connections, stud bolts are used to join pipe sections and provide a secure seal.
Oil and Gas Industry: Stud bolts are employed in the oil and gas sector for connecting pipeline components, valves, and flange connections, particularly in situations where high pressure and temperature are involved.
Aerospace and Defense: In the aerospace and defense industries, stud bolts are used for precision fastening in critical components.
When selecting DIN 939 stud bolts for a specific application, it's essential to consider factors such as material, size, and thread pitch to ensure they meet safety and performance requirements. Thread tolerance and thread engagement with nuts or threaded holes are also important factors to consider.
To preserve the high standards of our selection of industrial stud bolts, we have always adhered to a systematic quality management process.
Our staff of experts is vibrant and talented, and they have always been our largest supporters and contributors to our success. Our vision is to create a world of stud bolts.
d1 | M6 | M8 | M10 | M12 | M14 | M16 | M20 |
b | 18.00 | 22.00 | 26.00 | 30.00 | 34.00 | 38.00 | 46.00 |
e | 7.50 | 10.00 | 12.00 | 15.00 | 18.00 | 20.00 | 25.00 |
Metric Series | Appox Weight Per 1000 Pc. | ||||||
Dia | M6 | M8 | M10 | M12 | M14 | M16 | M20 |
Length | |||||||
25mm | 5.85 | ||||||
28mm | 6.52 | ||||||
30mm | 6.96 | 13.1 | |||||
35mm | 8.07 | 15.1 | 24.2 | ||||
40mm | 9.18 | 17.0 | 27.2 | 41.0 | |||
45mm | 10.2 | 19.0 | 30.3 | 45.4 | |||
50mm | 11.4 | 21.0 | 33.3 | 49.9 | 94.9 | ||
55mm | 12.5 | 22.9 | 36.4 | 54.3 | 103 | ||
60mm | 13.6 | 24.9 | 39.5 | 58.8 | 111 | 180 | |
65mm | 26.9 | 42.6 | 63.2 | 119 | 192 | ||
70mm | 28.9 | 45.7 | 67.6 | 126 | 205 | ||
75mm | 30.8 | 48.8 | 72.1 | 134 | 217 | ||
80mm | 32.8 | 51.8 | 76.5 | 142 | 229 | ||
85mm | 54.9 | 81.0 | 150 | 241 | |||
90mm | 58.0 | 85.4 | 158 | 254 | |||
95mm | 61.1 | 89.8 | 166 | 266 | |||
100mm | 64.2 | 94.3 | 174 | 279 | |||
110mm | 103.0 | 190 | 303 | ||||
120mm | 112.0 | 205 | 328 | ||||
130mm | 221 | 353 | |||||
140mm | 237 | 377 | |||||
150mm | 253 | 402 |
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
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