Products
DIN 931 Hex Bolt
Leader-Fastener® is a manufacturer and distributor of DIN 931 Hex Bolt. We have a complete line of service from having invested in production plants, export department and to having a quality control team and center to meet your requirements. We regard quality as the life of the company. We persist in good quality as the first policy and have established a set of quality control and inspection system according to the international standard. We have carried out ISO9001 Quality Guarantee System in every course of production, transportation and selling. We do hope we could be your partner in business by topping quality, knight service and competitive price in the near future and be your friends as well.
Send Inquiry PDF DownLoad
Product Description
DIN 931 - Hexagon head bolts with shank
Leader-Fastener® Hexagon Bolts are created to DIN 931, and are a partially threaded fastener with a hexagon-shaped head that is usually fixed with a spanner or socket tool. Hosting a machine thread, these bolts are suitable for use with either a nut or within a pre-tapped hole. DIN 931 Hex Head Bolts have a hex head, external machine screw threads and are partially threaded with coarse threads. These externally wrenched bolts are used with nuts and internally threaded holes. Dimensionally similar to ISO 4014, they are available in Class 8.8, 10.9 and 12.9 steel; in stainless steel, most are Class 70 (A2-70, A4-70), some are Class 80 (A4-80) and some uncommon sizes may be Class 50. Zinc plating offers corrosion protection for steel while plain finish lacks a surface treatment to prevent rust. A2 stainless steel is equivalent to 18-8 and A4 is comparable to 316. Also referred to as hex head cap screws, minimum threaded length is based on bolt diameter and bolt length. Thread tolerance for Class 8.8 and 10.9 is 6g for plain finish and 6h for plated; it is 6g for stainless steel; right-hand threads are standard. Measure bolt length from under the head to the tip. DIN 931 Hex Head Bolts are similar to ISO 4014, JIS B1180 and ANSI B18.2.3.1M. Use DIN 933 if you need fully threaded or DIN 960 for partially threaded with fine threads. (Note: Thread pitch, which is the distance from thread to thread, is usually not specified for coarse threaded fasteners but is listed for reference.)
Leader-Fastener® DIN 931 Hex Bolt
| 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 | - | - | - | - | - | - | - | - | - | - | - | ||
| Screw Thread d | M42 | (M45) | M48 | (M52) | M56 | (M60) | M64 | (M68) | M72 | (M76) | M80 | M90 | M100 | M110 | M125 | M140 | M160 | |
| P | Pitch | 4.5 | 4.5 | 5 | 5 | 5.5 | 5.5 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| b | L≤125 | 90 | 96 | 102 | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 125＜L≤200 | 96 | 102 | 108 | 116 | 124 | 132 | 140 | 148 | 156 | 164 | 172 | 192 | - | - | - | - | - | |
| L＞200 | 109 | 115 | 121 | 129 | 137 | 145 | 153 | 161 | 169 | 177 | 185 | 205 | 225 | 245 | 275 | 305 | 345 | |
| c | min | 0.3 | 0.3 | 0.3 | 0.3 | - | - | - | - | - | - | - | - | - | - | - | - | - |
| max | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | |
| da | max | 45.6 | 48.6 | 52.6 | 56.6 | 63 | 67 | 71 | 75 | 79 | 83 | 87 | 97 | 107 | 117 | 132 | 147 | 167 |
| ds | max=nominal size | 42 | 45 | 48 | 52 | 56 | 60 | 64 | 68 | 72 | 76 | 88 | 90 | 100 | 110 | 125 | 140 | 160 |
| min | 41.61 | 44.38 | 47.38 | 51.26 | 55.26 | 59.26 | 63.26 | 67.26 | 71.26 | 75.26 | 79.26 | 89.13 | 99.13 | 109.13 | 124 | 139 | 159 | |
| dw | min | 60.6 | 64.7 | 69.4 | 74.2 | 78.7 | 83.4 | 88.2 | 92.9 | 97.7 | 102.1 | 106.9 | 121.1 | 135.4 | 144.9 | 168.6 | 185.6 | 214.1 |
| e | min | 71.3 | 76.95 | 82.6 | 88.25 | 93.56 | 99.21 | 104.86 | 110.51 | 116.16 | 121.81 | 127.46 | 144.08 | 161.02 | 172.32 | 200.57 | 220.8 | 254.7 |
| k | Nominal Size | 26 | 28 | 30 | 33 | 35 | 38 | 40 | 43 | 45 | 48 | 50 | 57 | 63 | 69 | 79 | 88 | 100 |
| max | 26.42 | 28.42 | 30.42 | 33.5 | 35.5 | 38.5 | 40.5 | 43.5 | 45.5 | 48.5 | 50.5 | 57.6 | 63.6 | 69.6 | 79.6 | 88.7 | 100.7 | |
| min | 25.58 | 27.58 | 29.58 | 32.5 | 34.5 | 37.5 | 39.5 | 42.5 | 44.5 | 47.5 | 49.5 | 56.4 | 62.4 | 68.4 | 78.4 | 87.3 | 99.3 | |
| k1 | min | 17.9 | 19.3 | 20.9 | 22.8 | 24.2 | 26.2 | 27.6 | 29.8 | 31.2 | 33.2 | 34.6 | 40.3 | 43.7 | 47.9 | 54.9 | 61.1 | 69.5 |
| r | min | 1.2 | 1.2 | 1.6 | 1.6 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 |
| s | max=nominal size | 65 | 70 | 75 | 80 | 85 | 90 | 95 | 100 | 105 | 110 | 115 | 130 | 145 | 155 | 180 | 200 | 230 |
| min | 63.1 | 68.1 | 73.1 | 78.1 | 82.8 | 87.8 | 92.8 | 97.8 | 102.8 | 107.8 | 112.8 | 127.5 | 142.5 | 152.5 | 177.5 | 195.4 | 225.4 | |
| Length of Thread b | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | |
Material:
a) Steel, Property class: 5.6,8.8,10.9 according to DIN ISO 898-1
b) Stainless steel, Property class: ≤M20: A2-70,A4-70；> M20: A2-50, A4-50；C3，C4 according to DIN 267-11
c) Non-ferrous metal accroding to DIN 267-18
Hot Tags: DIN 931 Hex Bolt, China, Suppliers, Manufacturers, Factory, Made in China, Customized, Carbon Steel, Wholesale, Distributor, Free Sample
Related Category
Hex Nut
Rod Coupling Nut
Square Nut
Flange Nuts
Locking Nuts
Cap Nut
Castle Nut
Wing Nuts
Weld Nuts
Hex Bolt
Flange Bolt
Round Bolt
Square Bolt
T Bolts
U Bolts
Anchor Bolts
Stud Bolt
Thread Rods
Send Inquiry
Please feel free to give your inquiry in the form below. We will reply you in 24 hours.
