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DIN 931 DIN 933 级 8.8 黑色氧化碳钢六角头螺栓全螺纹和部分螺纹

提供全球运送服务。
代加工 & 定制制造。
支持大批量订单。
招标 & 项目订单支持。
多种表面处理。
严格的质量控制。
提供材料证书。

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产品说明

的 DIN 931 DIN 933 Grade 8.8 Black Oxide Carbon Steel Hex Head Bolts are high-strength external hex bolts designed for machinery assembly, steel structure fastening, equipment installation, construction hardware, and general industrial applications.

这些螺栓由碳钢 and produced in Grade 8.8, providing reliable mechanical strength for demanding fastening work. The product range includes both DIN 931 partially threaded hex head bolts 和 DIN 933 fully threaded hex head bolts, making it suitable for different assembly requirements.

的 Black Oxide Finish gives the bolts a uniform black appearance and provides basic surface protection. The hex head design allows installation with standard wrenches, sockets, or torque tools.

主要特点

DIN 931 and DIN 933 hex head bolt series
Grade 8.8 high-strength carbon steel
Black Oxide Finish surface treatment
External hex head for easy tightening
DIN 931 partially threaded structure
DIN 933 fully threaded structure
Suitable for machinery, construction, steel structure, and industrial fastening
Used with matching nuts and washers

产品规格

项目	规格
产品名称	Black Oxide Carbon Steel Hex Head Bolt
标准型	DIN 931 / DIN 933
强度等级	Grade 8.8
材质	碳钢
表面处理	Black Oxide Finish
颜色	黑色
头型	六角头
螺纹类型	公制螺纹
螺纹设计	Fully Threaded / Partially Threaded
Fastening Method	Used with Nut, Washer, or Threaded Hole
应用	Machinery, Construction, Steel Structure, Equipment Assembly

DIN 931 vs DIN 933

标准型	线程结构	Product Feature
DIN 931	部分螺纹	Has a smooth shank section and threaded end
DIN 933	全螺纹	Thread runs along the full bolt body

The product image shows a combination of both thread types: shorter bolts with full thread and longer bolts with partial thread. Therefore, DIN 931 / DIN 933 is a suitable product classification.

材料和表面处理

项目	描述
材质	碳钢
Grade	8.8
完成	Black Oxide Finish
外观	黑色表面
主要功能	Provides dark appearance and basic surface protection
Recommended Matching Parts	Hex nuts, flat washers, spring washers

Black Oxide Finish is commonly used for carbon steel fasteners. It gives the bolt a black industrial appearance and helps reduce surface oxidation when used with proper storage and protective oil.

产品优势

优势	描述
高强度性能	Grade 8.8 carbon steel provides reliable fastening strength.
Two Thread Options	DIN 931 partial thread and DIN 933 full thread meet different assembly needs.
安装方便	Hex head design works with standard wrenches, sockets, and torque tools.
Industrial Appearance	Black oxide finish gives a clean black surface.
Stable Fastening	Suitable for machinery, equipment, steel structure, and construction use.
Matching Assembly	Can be used with nuts and washers for complete fastening solutions.

常见应用

应用领域	典型用途
机械组装	Machine frame fastening, equipment fixing, mechanical connection
钢结构	Steel plate connection, bracket fixing, frame assembly
建筑五金	Metal support parts, structural components, installation hardware
工业设备	Production equipment, maintenance, replacement fastening
汽车 & 机械零件	Brackets, supports, chassis-related components
通用硬件	Repair, installation, and industrial fastening work

产品结构

部分	描述
六角头	Provides tool contact surface for tightening
Bolt Shank	Supports positioning and load transfer
Threaded Section	Engages with nuts or internal threads
Black Oxide Layer	Creates black surface appearance
Carbon Steel Body	Provides strength and durability

安装注意事项

步骤	推荐
1. Confirm Standard	Choose DIN 931 for partial thread or DIN 933 for full thread.
2. Match Thread	Use matching metric nuts or threaded holes.
3. Use Proper Tool	Tighten with a suitable wrench, socket, or torque tool.
4. Add Washer if Needed	Flat washers help distribute load on the assembly surface.
5. Store Properly	Keep black oxide bolts dry and protected to reduce rust risk.