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自攻螺丝的工程标准钢结构螺丝

ANSI/ASME B18.6.4─Thread Forming And Thread Cutting Tapping Screws And Metallic Drive Screws (Inch Series)

SAE J933─Mechanical and Quality Requirements For Tapping Screws

SAE J81─Thread Rolling Screws

SAE J1237─Metric Thread Rolling Screws

SAE J78─Steel Self-Drilling Tapping Screws

FIP 1000─Tapping Screws Performance Specifications

DIN 7500─Thread Rolling Screws For ISO Metric Screws Thread

DIN 7504─Self-Drilling Tapping Screws Dimensions,Requirements And Testing

ISO 2702─Heat-Treated Steel Tapping Mechanical Properties

JIS B1055─Mechanical Properties For Heat-Treated Steel and Stainless Tapping Screws

钢结构螺栓是一种高强度的螺栓,也是标准件的一种。紧固性能比较好,用于钢结构上,工程上,使紧固作用的。一般钢结构上,要求的钢结构螺栓都是8.8级以上的,还有10.9级,12.9级的,全部都是高强度的钢结构螺栓,有时钢结构上的螺栓是不需要电镀的,用本色就OK。

钢结构螺栓主要应用在钢结构工程上,用来连接钢结构钢板的连接点。

钢结构螺栓分为扭剪型高强螺栓和大六角高强螺栓,大六角高强螺栓属于普通螺丝的高强度级,而扭剪型高强螺栓则是大六角高强螺栓的改进型,为了更好施工.钢结构螺丝