Hex bolts are hex head bolts (partial thread) -C and hex head bolts (full thread) -C. Also known as hex head bolt (rough) hair hex head bolt, black iron screw.
Commonly used standards can be seen: SH3404, HG20613, HG20634, etc.
Hexagon bolt: A type of fastener consisting of a head and a screw (a cylinder with an external thread), which must be combined with a nut to fasten and connect two parts with through holes.
Hexagon bolt
Hexagon bolt
This type of connection is called bolt connection. If the nut is unscrewed from the bolt, the two parts can be separated, so the bolt connection is a removable connection.
Screw Thread d | |
P | Pitch | α | tol.(+2) | b | L≤125mm | 125<L ≤ 200 | L>200 | dk | max=nominal size | min | ds | max=nominal size | min | e | min | k | max | s | Nominal Size | min | max | t | max=nominal size | min | | 0.5 | 0.7 | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 | 2.5 | 2.5 | 2.5 | 3 | 90° | 90° | 90° | 90° | 90° | 90° | 90° | 90° | 90° | 90° | 90° | 60° | 60° | 12 | 14 | 16 | 18 | 22 | 26 | 30 | 34 | 38 | 42 | 46 | 50 | 54 | / | / | / | 24 | 28 | 32 | 36 | 40 | 44 | 48 | 52 | 56 | 60 | / | / | / | / | / | 45 | 49 | 53 | 57 | 61 | 65 | 69 | 73 | 6 | 8 | 10 | 12 | 16 | 20 | 24 | 27 | 30 | 33 | 36 | 36 | 39 | 5.7 | 7.64 | 9.64 | 11.57 | 15.57 | 19.48 | 23.48 | 26.48 | 29.48 | 32.38 | 35.38 | 35.38 | 38.38 | 3 | 4 | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 | 2.86 | 3.82 | 4.82 | 5.82 | 7.78 | 9.78 | 11.73 | 13.73 | 15.73 | 17.73 | 19.67 | 21.67 | 23.67 | 2.3 | 2.87 | 3.44 | 4.58 | 5.72 | 6.86 | 9.15 | 11.43 | 11.43 | 13.72 | 13.72 | 16 | 16 | 1.7 | 2.3 | 2.8 | 3.3 | 4.4 | 5.5 | 6.5 | 7 | 7.5 | 8 | 8.5 | 13.1 | 14 | 2 | 2.5 | 3 | 4 | 5 | 6 | 8 | 10 | 10 | 12 | 12 | 14 | 14 | 2.02 | 2.52 | 3.02 | 4.02 | 5.02 | 6.02 | 8.025 | 10.025 | 10.025 | 12.032 | 12.032 | 14.032 | 14.032 | 2.1 | 2.6 | 3.1 | 4.12 | 5.14 | 6.14 | 8.175 | 10.175 | 10.175 | 12.212 | 12.212 | 14.212 | 14.212 | 1.2 | 1.8 | 2.3 | 2.5 | 3.5 | 4.4 | 4.6 | 4.8 | 5.3 | 5.5 | 5.9 | 8.8 | 10.3 | 0.95 | 1.55 | 2.05 | 2.25 | 3.2 | 4.1 | 4.3 | 4.5 | 5 | 5.2 | 5.6 | 8.44 | 9.87 | |






The advantages of QBH
- QBH brand sales to the main quality assurance.
- Years of export trade management, excellent service, word-of-mouth guarantee.
- By working with TUV,escort for quality.
- Customization of non-standard parts can be made according to customer's requirements and drawings.
- For quality customers,we can provide a certain credit period.