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| Customization: | Available |
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| Material: | Carbon Steel |
| Type: | Round Head |
| Shipping Cost: | Contact the supplier about freight and estimated delivery time. |
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| Stainelss Steel Hex Head Hexagon Domed Cap Nut | |
| Material: | Carbon Steel, Stainless Steel, Brass etc. |
| Standards: | GB, DIN, ISO, ANSI/ASTM, BS, BSW, JIS, ETC |
| Size: | M4-M72 or non-standard asa request & design |
| Finish: | Plain, Black, Zinc, Yellow Zinc, HDG, Dacromet, etc. |
| Grade: | A2-70, A4-70, A4-80, 4.8, 8.8, 10.9, 12.9 |
| Thread Size d |
M4 | M5 | M6 | M8 | M10 | M12 | (M14) | M16 | (M18) | M20 | (M22) | M24 | ||
| P | Coarse thread | 0.7 | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 | 2.5 | 2.5 | 2.5 | 3 | |
| Fine thread -1 | / | / | / | 1 | 1.25 | 1.5 | 1.5 | 1.5 | 2 | 2 | 2 | 2 | ||
| Fine thread -2 | / | / | / | / | 1 | 1.25 | / | / | 1.5 | 1.5 | 1.5 | / | ||
| da | max | 4.6 | 5.75 | 6.75 | 8.75 | 10.8 | 13 | 15.1 | 17.3 | 19.5 | 21.6 | 23.7 | 25.9 | |
| min | 4 | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 | ||
| dk | min=nominal size | 6.5 | 7.5 | 9.5 | 12.5 | 15 | 17 | 20 | 23 | 26 | 28 | 33 | 34 | |
| dw | min | 5.9 | 6.9 | 8.9 | 11.6 | 14.6 | 16.6 | 19.6 | 22.5 | 24.9 | 27.7 | 31.4 | 33.3 | |
| e | Grade A | min | 7.66 | 8.79 | 11.05 | 14.38 | 17.77 | 20.03 | 23.35 | 26.75 | 30.14 | 33.53 | 37.72 | 39.98 |
| Grade B | min | 7.5 | 8.63 | 10.89 | 14.2 | 17.59 | 19.85 | 22.78 | 26.17 | 29.56 | 32.95 | 37.29 | 39.55 | |
| x | Coarse thread | max | 1.4 | 1.6 | 2 | 2.5 | 3 | 3.5 | 4 | 4 | 5 | 5 | 5 | 6 |
| Fine thread | max | / | / | / | 2 | 2.5 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | |
| G | Coarse thread | max | 2.75 | 3 | 3.7 | 4.9 | 5.6 | 6.4 | 7.3 | 7.3 | 9.3 | 9.3 | 9.3 | 10.7 |
| Fine thread | max | / | / | / | 3.7 | 4.9 | 5.6 | 5.6 | 5.6 | 7.3 | 7.3 | 7.3 | 7.3 | |
| h | max=nominal size | 8 | 10 | 12 | 15 | 18 | 22 | 25 | 28 | 32 | 34 | 39 | 42 | |
| Grade A | min | 7.64 | 9.64 | 11.57 | 14.57 | 17.57 | 21.48 | 24.48 | 27.48 | 31.38 | 33.38 | 38.38 | 41.38 | |
| Grade B | min | 7.42 | 9.42 | 11.3 | 14.3 | 17.3 | 21.16 | 24.16 | 27.16 | 31 | 33 | 38 | 41 | |
| m | max | 3.2 | 4 | 5 | 6.5 | 8 | 10 | 11 | 13 | 15 | 16 | 18 | 19 | |
| min | 2.9 | 3.7 | 4.7 | 6.14 | 7.64 | 9.64 | 10.3 | 12.3 | 14.3 | 14.9 | 16.9 | 17.7 | ||
| mw | min | 2.32 | 2.96 | 3.76 | 4.91 | 6.11 | 7.71 | 8.24 | 9.84 | 11.44 | 11.92 | 13.52 | 14.16 | |
| SR | ≈ | 3.25 | 3.75 | 4.75 | 6.25 | 7.5 | 8.5 | 10 | 11.5 | 13 | 14 | 16.5 | 17 | |
| s | max=nominal size | 7 | 8 | 10 | 13 | 16 | 18 | 21 | 24 | 27 | 30 | 34 | 36 | |
| Grade A | min(Grade A) | 6.78 | 7.78 | 9.78 | 12.73 | 15.73 | 17.73 | 20.67 | 23.67 | 26.67 | 29.67 | 33.38 | 35.38 | |
| Grade B | min(Grade B) | 6.64 | 7.64 | 9.64 | 12.57 | 15.57 | 17.57 | 20.16 | 23.16 | 26.16 | 29.16 | 33 | 35 | |
| t | max | 5.74 | 7.79 | 8.29 | 11.35 | 13.35 | 16.35 | 18.35 | 21.42 | 25.42 | 26.42 | 29.42 | 31.5 | |
| min | 5.26 | 7.21 | 7.71 | 10.65 | 12.65 | 15.65 | 17.65 | 20.58 | 24.58 | 25.58 | 28.58 | 30.5 | ||
| w | min | 2 | 2 | 2 | 2 | 2 | 3 | 4 | 4 | 5 | 5 | 5 | 6 | |
| per 1000 units≈kg | Coarse thread | 1.5 | 2.2 | 4.6 | 8.9 | 20.1 | 28.3 | 39.7 | 54.3 | 79.1 | 104 | / | 216 | |
| Fine thread | / | / | / | 11 | 20.1 | 28.3 | 39.7 | 54.3 | 95 | 104 | / | 216 | ||
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| Q1: What thread standards do you follow? |
| A1: Our screws comply with DIN, ISO, ANSI, and JIS standards, and can also be customized according to customer drawings. |
| Q2: What types of nuts do you manufacture? |
| A2: We supply a full range of nuts including hex nuts, flange nuts, lock nuts, nylon-insert nuts, square nuts, cap nuts, weld nuts, T-nuts, wing nuts, and non-standard custom nuts. |
| Q3: Do you provide samples before mass production? |
| A3: Yes, we offer free or low-cost samples for quality and dimension confirmation prior to order. |
| Q4: How do you control product quality? |
| A4: Every batch is tested for torque, hardness, thread precision, and salt spray corrosion resistance, following ISO 9001 quality system standards. |
| Q5: Do you offer OEM or customized production? |
| A5: Yes. We can produce screws according to samples, technical drawings, or specific drive/head combinations, and offer custom packaging and labeling. |
| Q6: What is the difference between A2 and A4 stainless steel bolts? |
| A6: A2 (304) is ideal for standard outdoor and industrial use, while A4 (316) contains molybdenum, offering higher corrosion resistance for marine, chemical, and salt-spray environments. |
| Q7: Do you provide matched nut & bolt or nut & washer kits? |
| A7: Yes. We can supply pre-packed sets or assembly kits customized for distributors or hardware chains. |
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