High-strength heavy hex structural bolt assemblies with matching nuts and washers for bolted steel connections in building and industrial projects.
WhatsApp：+86 17733036295
E-mail：info@kangnaigu.net
Phone Line：+86 13333199538
Address：Dalian Office, Shahe City, Xingtai City, Hebei Province
High-strength heavy hex structural bolt assemblies with matching nuts and washers for bolted steel connections in building and industrial projects.
| Product Name | 10.9S High Strength Hexagon Bolt for Steel Structure |
| Standard | GB/T1228 |
| Material | Alloy steel, Grade 10.9S |
| Surface Treatment | Black oxide finish |
| Structure | Hex bolt + matching heavy hex nut + hardened flat washer set |
| Origin | Hebei · Handan · Yongnian — Integrated Manufacturer & Exporter |
| MOQ | 100 Pcs (negotiable for trial orders) |
| Strength Grade | 10.9S |
| Thread Tolerance | 6g |
| Feature | High tensile strength, good fatigue resistance, pre-tightening connection, stable load bearing |
| Working Temperature | -40 ℃ ~ +120 ℃ |
| Service Life | Long service life for steel structure engineering |
| Black Oxide | Standard finish, widely used for indoor steel structure projects |
| Hot Dip Galvanized | Custom processing, for outdoor, coastal anti-corrosion steel structure |
| Model | Thread Size | Bolt Length Range(mm) | Matched Nut & Washer | Grade |
|---|---|---|---|---|
| SB-M16 | M16 | 40 ~ 90 | Heavy nut + hardened washer | 10.9S |
| SB-M20 | M20 | 45 ~ 100 | Heavy nut + hardened washer | 10.9S |
| SB-M22 | M22 | 50 ~ 110 | Heavy nut + hardened washer | 10.9S |
| SB-M24 | M24 | 55 ~ 120 | Heavy nut + hardened washer | 10.9S |
| SB-M27 | M27 | 60 ~ 130 | Heavy nut + hardened washer | 10.9S |
| SB-M30 | M30 | 65 ~ 140 | Heavy nut + hardened washer | 10.9S |
| Applications | Steel frame workshop, steel structure bridge, power station steel support, tower engineering, heavy equipment frame, high-rise building steel structure connection. |
| Packaging | Woven bag or wooden pallet, waterproof stretch film wrapped |
| Documents | PI, Packing List, Certificate of Origin, Mill Test Certificate |
| Payment Terms | 30% T/T in advance, balance before shipment |
| Lead Time | 3–7 days for regular stock, 7–15 days for customized specifications |
Please tell us thread size, length and surface treatment you need. We supply GB/T1228 10.9S high strength structural bolts for steel structure projects.
Email: info@kangnaigu.net
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