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Traceable quality
Qd Class 8.8 Hex Head Black Oxide Carbon Steel UNC Thread Screw Bolt 1/4 3/8
GB31
Stainless steel
Black oxide
8.8
M6
From
US$0.02
/ piece
Tier prices are for reference. Final price depends on specification, quantity and destination.
Retail orders: from 10 pcs per item
Wholesale MOQ: 100 piece
Tier pricing
| Quantity | Unit price |
|---|---|
| 100-999 piece | US$0.09 |
| 1000-4999 piece | US$0.06 |
| 5000-9999 piece | US$0.04 |
| ≥ 10000 piece | US$0.02 |
Specifications
| Standard | GB31 |
|---|---|
| Material | Stainless steel |
| Surface | Black oxide |
| Property class | 8.8 |
| Thread | M6 |
| Size range | M6 |
| Material | STAINLESS STEEL |
| Grade | A2-70 |
| 螺纹类型 | Standard thread |
| 头部类型 | Hex头 |
| Surface treatment | 锌 |
| 包含的零件 | Hex Head Bolts |
| 每个螺栓的螺母 | 1 |
| 螺母数量 | 1 |
| Place of origin | Hebei, China |
| Brand | JunChuang Fastener |
| Material | Stainlesss Steel |
| Product name | Hex Bolt |
| Standard | DIN ASME GB JIS ISO |
| Grade | A2-70/A4-80 |
| Application | Building |
| Package | Buyer's Requirement |
| Delivery time | 5-15 Days |
| Service | OEM ODM |
| Keyword | Din Hex Bolt |
| Advantage | OEM Customized Service Provided |
| 销售单位 | 单个商品 |
| 单个包装尺寸 | 33X32X36 厘米 |
| 单个产品毛重 | 50.0 公斤 |
Description
Qd Class 8.8 Hex Head Black Oxide Carbon Steel UNC Thread Screw Bolt 1/4 3/8
Standard: GB31
Material: Stainless steel
Surface: Black oxide
Grade: A2-70
螺纹类型: Standard thread
头部类型: Hex头
包含的零件: Hex Head Bolts
每个螺栓的螺母: 1
螺母数量: 1
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 →