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| Customization: | Available |
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| Material: | Stainless Steel |
| Type: | Pan Head |
| Shipping Cost: | Contact the supplier about freight and estimated delivery time. |
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| Slotted Flat Head Thumb Screw | |
| Material: | Carbon Steel, Stainless Steel, Brass etc. |
| Standards: | GB, DIN, ISO, ANSI/ASTM, BS, BSW, JIS, ETC |
| Size: | M1.6-M10 or non-standard asa request & design |
| Finish: | Plain, Black, Zinc, Yellow Zinc, HDG, Dacromet, etc. |
| Thread Size d |
M1.6 | M2 | M2.5 | M3 | M4 | M5 | M6 | M8 | M10 | |
| P | Pitch | 0.35 | 0.4 | 0.45 | 0.5 | 0.7 | 0.8 | 1 | 1.25 | 1.5 |
| a | max | 0.7 | 0.8 | 0.9 | 1 | 1.4 | 1.6 | 2 | 2.5 | 3 |
| dk | max | 6 | 7 | 9 | 11 | 14 | 17 | 20 | 25 | 30 |
| min | 5.82 | 6.78 | 8.78 | 10.73 | 13.73 | 16.73 | 19.67 | 24.67 | 29.67 | |
| da | max | 2.1 | 2.6 | 3.1 | 3.6 | 4.7 | 5.7 | 6.8 | 9.2 | 11.2 |
| k | max | 1.2 | 1.4 | 1.8 | 2 | 2.8 | 3.5 | 4 | 5 | 6 |
| min | 1.06 | 1.26 | 1.66 | 1.86 | 2.66 | 3.32 | 3.7 | 4.7 | 5.7 | |
| n | Nominal Size | 0.4 | 0.5 | 0.6 | 0.8 | 1.2 | 1.2 | 1.6 | 2 | 2.5 |
| max | 0.6 | 0.7 | 0.8 | 1 | 1.51 | 1.51 | 1.91 | 2.31 | 2.81 | |
| min | 0.46 | 0.56 | 0.66 | 0.86 | 1.26 | 1.26 | 1.66 | 2.06 | 2.56 | |
| r | min | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 | 0.25 | 0.4 | 0.4 |
| t | min | 0.6 | 0.7 | 0.9 | 1 | 1.4 | 1.7 | 2 | 2.5 | 3 |
| R | ≈ | 10 | 12 | 14 | 16 | 20 | 25 | 30 | 36 | 40 |
| re | ≈ | 2.24 | 2.8 | 3.5 | 4.2 | 5.6 | 7 | 8.4 | 11.2 | 14 |
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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 stainless steel grades do you supply for bolts? |
| A2: We supply multiple grades including A2-70, A2-80, A4-70, A4-80, 304, 316, and 410SS, suitable for different mechanical strength and corrosion-resistance requirements. |
| 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: Will stainless steel bolts rust over time? |
| A7: Under severe chemical or chloride exposure, A2 may develop slight surface corrosion. A4/316 performs better in harsh environments. We also offer passivation treatment for enhanced protection. |
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