Complete size chart for 12.9 Alloy Steel Socket Head Cap Screw: 100 sizes, all in stock in Taiwan. The Availability column shows the current status of each row; click a size to open its detail page.
| Items | 100 sizes |
|---|---|
| Thread size | 1.6 – 24 mm |
| Length | 3 – 75 mm |
| Material | Alloy Steel |
| Standards | BS 84 · ASME B18.3 |
🔍 Pick a size in the interactive catalog (live stock, add to cart)💬 Ask on LINE✉ Email us for a quote
Click any size in the table to open its detail page (unit price, pack size, add to cart). For a full parts list, email sfp@sfp-tw.com or call us; Excel lists are welcome.
| Size | Length | Unit price (ex-tax) | Pack | Availability |
|---|---|---|---|---|
| Thread M 1.6 mm | ||||
| M1.6*3 | 3 mm | US$ 0.31 | 5 pcs/pack | In stock |
| Thread M 2 mm | ||||
| M2*4 | 4 mm | US$ 0.06 | 50 pcs/pack | In stock |
| M2*5 | 5 mm | US$ 0.06 | 50 pcs/pack | In stock |
| M2*6 | 6 mm | US$ 0.06 | 50 pcs/pack | In stock |
| M2*8 | 8 mm | US$ 0.06 | 50 pcs/pack | In stock |
| M2*10 | 10 mm | US$ 0.06 | 50 pcs/pack | In stock |
| M2*12 | 12 mm | US$ 0.06 | 50 pcs/pack | In stock |
| M2*14 | 14 mm | US$ 0.06 | 50 pcs/pack | In stock |
| M2*16 | 16 mm | US$ 0.06 | 50 pcs/pack | In stock |
| Thread M 2.5 mm | ||||
| M2.5*4 | 4 mm | US$ 0.06 | 50 pcs/pack | In stock |
| M2.5*5 | 5 mm | US$ 0.06 | 50 pcs/pack | In stock |
| M2.5*6 | 6 mm | US$ 0.06 | 50 pcs/pack | In stock |
| M2.5*8 | 8 mm | US$ 0.06 | 50 pcs/pack | In stock |
| M2.5*10 | 10 mm | US$ 0.06 | 50 pcs/pack | In stock |
| M2.5*12 | 12 mm | US$ 0.06 | 50 pcs/pack | In stock |
| M2.5*14 | 14 mm | US$ 0.06 | 50 pcs/pack | In stock |
| M2.5*16 | 16 mm | US$ 0.06 | 50 pcs/pack | In stock |
| M2.5*20 | 20 mm | US$ 0.09 | 20 pcs/pack | In stock |
| Thread M 3 mm | ||||
| M3*4 | 4 mm | US$ 0.04 | 50 pcs/pack | In stock |
| M3*5 | 5 mm | US$ 0.03 | 50 pcs/pack | In stock |
| M3*6 | 6 mm | US$ 0.03 | 50 pcs/pack | In stock |
| M3*8 | 8 mm | US$ 0.03 | 50 pcs/pack | In stock |
| M3*10 | 10 mm | US$ 0.02 | 100 pcs/pack | In stock |
| M3*12 | 12 mm | US$ 0.03 | 50 pcs/pack | In stock |
| M3*14 | 14 mm | US$ 0.05 | 50 pcs/pack | In stock |
| M3*16 | 16 mm | US$ 0.05 | 50 pcs/pack | In stock |
| M3*18 | 18 mm | US$ 0.06 | 50 pcs/pack | In stock |
| M3*20 | 20 mm | US$ 0.06 | 50 pcs/pack | In stock |
| M3*22 | 22 mm | US$ 0.06 | 50 pcs/pack | In stock |
| Thread M 4 mm | ||||
| M4*4 | 4 mm | US$ 0.09 | 20 pcs/pack | In stock |
| M4*5 | 5 mm | US$ 0.05 | 50 pcs/pack | In stock |
| M4*6 | 6 mm | US$ 0.05 | 50 pcs/pack | In stock |
| M4*8 | 8 mm | US$ 0.05 | 50 pcs/pack | In stock |
| M4*10 | 10 mm | US$ 0.05 | 100 pcs/pack | In stock |
| M4*12 | 12 mm | US$ 0.05 | 50 pcs/pack | In stock |
| M4*14 | 14 mm | US$ 0.06 | 50 pcs/pack | In stock |
| M4*16 | 16 mm | US$ 0.06 | 50 pcs/pack | In stock |
| M4*18 | 18 mm | US$ 0.06 | 50 pcs/pack | In stock |
| M4*20 | 20 mm | US$ 0.06 | 50 pcs/pack | In stock |
| M4*22 | 22 mm | US$ 0.06 | 50 pcs/pack | In stock |
| M4*25 | 25 mm | US$ 0.06 | 50 pcs/pack | In stock |
| Thread M 5 mm | ||||
| M5*6 | 6 mm | US$ 0.06 | 30 pcs/pack | In stock |
| M5*8 | 8 mm | US$ 0.06 | 30 pcs/pack | In stock |
| M5*10 | 10 mm | US$ 0.06 | 30 pcs/pack | In stock |
| M5*12 | 12 mm | US$ 0.06 | 30 pcs/pack | In stock |
| M5*14 | 14 mm | US$ 0.06 | 30 pcs/pack | In stock |
| M5*16 | 16 mm | US$ 0.06 | 30 pcs/pack | In stock |
| M5*18 | 18 mm | US$ 0.06 | 30 pcs/pack | In stock |
| M5*20 | 20 mm | US$ 0.08 | 30 pcs/pack | In stock |
| M5*22 | 22 mm | US$ 0.08 | 20 pcs/pack | In stock |
| M5*25 | 25 mm | US$ 0.09 | 20 pcs/pack | In stock |
| Thread M 6 mm | ||||
| M6*8 | 8 mm | US$ 0.08 | 20 pcs/pack | In stock |
| M6*10 | 10 mm | US$ 0.08 | 20 pcs/pack | In stock |
| M6*12 | 12 mm | US$ 0.08 | 20 pcs/pack | In stock |
| M6*14 | 14 mm | US$ 0.09 | 20 pcs/pack | In stock |
| M6*16 | 16 mm | US$ 0.09 | 20 pcs/pack | In stock |
| M6*18 | 18 mm | US$ 0.09 | 20 pcs/pack | In stock |
| M6*20 | 20 mm | US$ 0.09 | 20 pcs/pack | In stock |
| M6*22 | 22 mm | US$ 0.11 | 20 pcs/pack | In stock |
| M6*25 | 25 mm | US$ 0.11 | 20 pcs/pack | In stock |
| M6*30 | 30 mm | US$ 0.11 | 20 pcs/pack | In stock |
| Thread M 8 mm | ||||
| M8*10 | 10 mm | US$ 0.07 | 30 pcs/pack | In stock |
| M8*12 | 12 mm | US$ 0.07 | 30 pcs/pack | In stock |
| M8*16 | 16 mm | US$ 0.08 | 30 pcs/pack | In stock |
| M8*18 | 18 mm | US$ 0.09 | 30 pcs/pack | In stock |
| M8*20 | 20 mm | US$ 0.09 | 20 pcs/pack | In stock |
| M8*22 | 22 mm | US$ 0.10 | 20 pcs/pack | In stock |
| M8*25 | 25 mm | US$ 0.10 | 20 pcs/pack | In stock |
| M8*30 | 30 mm | US$ 0.10 | 20 pcs/pack | In stock |
| M8*35 | 35 mm | US$ 0.11 | 20 pcs/pack | In stock |
| Thread M 10 mm | ||||
| M10*10 | 10 mm | US$ 0.16 | 20 pcs/pack | In stock |
| M10*12 | 12 mm | US$ 0.13 | 20 pcs/pack | In stock |
| M10*16 | 16 mm | US$ 0.14 | 20 pcs/pack | In stock |
| M10*20 | 20 mm | US$ 0.14 | 20 pcs/pack | In stock |
| M10*25 | 25 mm | US$ 0.16 | 10 pcs/pack | In stock |
| M10*30 | 30 mm | US$ 0.17 | 10 pcs/pack | In stock |
| M10*35 | 35 mm | US$ 0.19 | 10 pcs/pack | In stock |
| M10*40 | 40 mm | US$ 0.20 | 10 pcs/pack | In stock |
| Thread M 12 mm | ||||
| M12*16 | 16 mm | US$ 0.26 | 10 pcs/pack | In stock |
| M12*20 | 20 mm | US$ 0.22 | 10 pcs/pack | In stock |
| M12*25 | 25 mm | US$ 0.24 | 10 pcs/pack | In stock |
| M12*30 | 30 mm | US$ 0.25 | 10 pcs/pack | In stock |
| M12*35 | 35 mm | US$ 0.27 | 10 pcs/pack | In stock |
| M12*40 | 40 mm | US$ 0.28 | 10 pcs/pack | In stock |
| M12*45 | 45 mm | US$ 0.31 | 10 pcs/pack | In stock |
| M12*50 | 50 mm | US$ 0.34 | 5 pcs/pack | In stock |
| Thread M 16 mm | ||||
| M16*20 | 20 mm | Ask for price | In stock | |
| Thread M 24 mm | ||||
| M24*75 | 75 mm | US$ 1.91 | In stock | |
| 4#-40*1/2" | US$ 0.12 | 10 pcs/pack | In stock | |
| 4#-40*1/4" | US$ 0.12 | 10 pcs/pack | In stock | |
| 4#-40*3/4" | US$ 0.12 | 10 pcs/pack | In stock | |
| 6#-32*7/16" | US$ 0.09 | 20 pcs/pack | In stock | |
| 8#-32*1" | US$ 0.09 | 20 pcs/pack | In stock | |
| 8#-32*1/2" | US$ 0.09 | 20 pcs/pack | In stock | |
| 8#-32*3/4" | US$ 0.09 | 20 pcs/pack | In stock | |
| 10#-32(Fine Thread)*1" | US$ 0.09 | 20 pcs/pack | In stock | |
| 10#-32(Fine Thread)*1-1/4" | US$ 0.09 | 20 pcs/pack | In stock | |
| 10#-32(Fine Thread)*1/2" | US$ 0.09 | 20 pcs/pack | In stock | |
| 10#-32(Fine Thread)*3/4" | US$ 0.09 | 20 pcs/pack | In stock | |
| 10#-32(Fine Thread)*3/8" | US$ 0.09 | 20 pcs/pack | In stock | |
Prices in USD are converted from TWD (reference rate 1 USD = NT$32.5, as of 2026-09-08). Orders are invoiced and settled in TWD.