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Grade 8.8 Carbon Steel High-Strength Carriage Bolt Blackened Finish Round Head Square Neck Screw GB12 Standard
GB12
Carbon steel
Zinc plated
8.8
M6
From
US$0.1
/ piece
Tier prices are for reference. Final price depends on specification, quantity and destination.
Retail orders: from 10 pcs per item
Wholesale MOQ: 500 piece
Tier pricing
| Quantity | Unit price |
|---|---|
| 500-999 piece | US$0.5 |
| 1000-4999 piece | US$0.35 |
| 5000-9999 piece | US$0.15 |
| ≥ 10000 piece | US$0.1 |
Specifications
| Standard | GB12 |
|---|---|
| Material | Carbon steel |
| Surface | Zinc plated |
| Property class | 8.8 |
| Thread | M6 |
| Size range | M6 |
| Material | 钢 |
| 螺纹尺寸 | M6 |
| 紧固件类型 | large-head expansion anchor bolt |
| Application | 混凝土 |
| 表面处理工艺 | Bright(Uncoated) |
| 头部类型 | 圆形 |
| 计量系统 | Metric |
| 表面效果 | Zinc plated |
| 承载力 | strong |
| Place of origin | Hebei, China |
| Brand | JUNCHUANG |
| Material | Body:CarbonSteel |
| 销售单位 | 单个商品 |
| 单个包装尺寸 | 57X65X73 厘米 |
| 单个产品毛重 | 50.0 公斤 |
Description
Grade 8.8 Carbon Steel High-Strength Carriage Bolt Blackened Finish Round Head Square Neck Screw GB12 Standard
Standard: GB12
Material: Carbon steel
Surface: Zinc plated
螺纹尺寸: M6
紧固件类型: large-head expansion anchor bolt
Application: 混凝土
表面处理工艺: Bright(Uncoated)
头部类型: 圆形
计量系统: Metric
表面效果: Zinc plated
Buying guides
2026-11-07
Stainless fastener grades: 304 vs 316
Corrosion resistance, strength and cost, plus selection advice for outdoor and marine environments.
Read article → 2026-11-07How to choose bolt property class: 8.8, 10.9 and 12.9
Load, preload and cost: when to specify 8.8, 10.9 or 12.9 bolts.
Read article →