Continue to order
Traceable quality
High Strength Square Neck Carbon Steel Flat Head Carriage Bolt M3/M4 Black Oxide Plated Class 4/8/10/12.9
Carbon steel
Hot-dip galvanized
12.9
M3
From
US$0.12
/ piece
Tier prices are for reference. Final price depends on specification, quantity and destination.
Retail orders: from 10 pcs per item
Wholesale MOQ: 1000 piece
Tier pricing
| Quantity | Unit price |
|---|---|
| 1000-4999 piece | US$0.15 |
| 5000-7999 piece | US$0.14 |
| 8000-9999 piece | US$0.13 |
| ≥ 10000 piece | US$0.12 |
Specifications
| Material | Carbon steel |
|---|---|
| Surface | Hot-dip galvanized |
| Property class | 12.9 |
| Thread | M3 |
| Size range | M3 |
| Length range | 100~150mm |
| Material | 钢 |
| Grade | 8.8级 |
| 螺纹类型 | Metric |
| 头部类型 | Wedge |
| Surface treatment | 热Zinc plated |
| 每个螺栓的螺母 | 1 |
| Place of origin | China |
| Material | Steel |
| 销售单位 | 单个商品 |
| 单个包装尺寸 | 10X10X10 厘米 |
| 单个产品毛重 | 50.0 公斤 |
Description
High Strength Square Neck Carbon Steel Flat Head Carriage Bolt M3/M4 Black Oxide Plated Class 4/8/10/12.9
Material: Carbon steel
Surface: Hot-dip galvanized
Grade: 8.8级
螺纹类型: Metric
头部类型: Wedge
每个螺栓的螺母: 1
Place of origin: China
Related products
Add to cart
M8 Stainless Steel Expansion Anchor Bolts External Force Hexagon Expansion Screw Sleeve Plastic Application 10mm Diameter Inch
From
US$0.02
MOQ: 1000 piece
Add to cart
Wedge Anchor Building Standard Heavy Hot-dip Galvanized Zinc Plated White Blue Carbon Steel Expansion Anchor Bolt 25 Lbs
From
US$0.02
MOQ: 100 piece
Add to cart
GB869 Solid Copper Countersunk Rivets, Hammer Type Flat Cone Head Copper Rivets, Sizes M2 M3 M4 M5 M6 M8
From
US$0.07
MOQ: 1000 piece
Add to cart
Full Thread Bolt Grade 10.9 High-Strength Non-Slip External Hexagon Zinc Plated Carbon Steel Flange Bolt Set M6-M20 ISO
From
US$0.09
MOQ: 1000 piece
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 →