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Blackened Square Head Screw, Grade 4.8, Original GB821 Square Head Set Screw with Flat End, Flat Tail Bolt for Iron Tool Holder
GB821 / DIN934
Stainless steel
Polished
4.8
M4~M20
From
US$0.01
/ 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$0.04 |
| 1000-4999 piece | US$0.03 |
| 5000-9999 piece | US$0.02 |
| ≥ 10000 piece | US$0.01 |
Specifications
| Standard | GB821 / DIN934 |
|---|---|
| Material | Stainless steel |
| Surface | Polished |
| Property class | 4.8 |
| Thread | M4~M20 |
| Size range | M4~M20 |
| Length range | 5.0mm |
| 测量系统 | Metric |
| Grade | A2-70 |
| 螺母形状 | Hex |
| 螺纹覆盖率 | 全螺纹 |
| 螺纹旋向 | 左旋 |
| Surface treatment | Plain |
| 插入直径 | 1/4in |
| 机身高度 | 5.0mm |
| Application | 工业通用 |
| 驱动系统 | 外Hex |
| 车身形式 | Hex |
| 整体长度 | 15 mm |
| 头部类型 | Hex |
| Place of origin | Hebei, China |
| Brand | JunChuang |
| 螺母类型 | HEX |
| Material | Stainless Steel Carbon Steel |
| Product name | Hex Nut |
| Color | Silver |
| 销售单位 | 单个商品 |
| 单个包装尺寸 | 53X57X58 厘米 |
| 单个产品毛重 | 52.0 公斤 |
Description
Blackened Square Head Screw, Grade 4.8, Original GB821 Square Head Set Screw with Flat End, Flat Tail Bolt for Iron Tool Holder
Standard: GB821 / DIN934
Material: Stainless steel
Surface: Polished
测量系统: Metric
Grade: A2-70
螺母形状: Hex
螺纹覆盖率: 全螺纹
螺纹旋向: 左旋
插入直径: 1/4in
机身高度: 5.0mm
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 →