KeepFill U.S 紧固件供应商 UST237573 高强度钢外六角螺丝

KeepFill U.S 紧固件供应商 UST237573 高强度钢外六角螺丝 

型号：UST237573（多种型号可供选择）

High-Strength Grade 8 Steel Hex Head Screw
Zinc-Aluminum Coated, 1/4"-20 Thread Size, 3/4" Long
**度8级钢六角头螺钉
锌铝涂层，1/4“-20螺纹尺寸，3/4”长

Head Type: Hex
Drive Style: External Hex
System of Measurement: Inch
Thread Direction: Right Hand
Thread Size: 1/4"-20
Screw Size Decimal Equivalent: 0.25"
Thread Type: UNC
Thread Fit: Class 2A
Length: 3/4"
Threading: Fully Threaded
Thread Spacing : Coarse
Head
Width: 7/16"
Height: 5/32"
Fastener Strength Grade/Class: Grade 8
Material: Steel
Finish: Zinc-Aluminum Coated
Tensile Strength: 150,000 psi
Hardness: Rockwell C33
Specifications Met: ASME B18.2.1, SAE J429
RoHS: Compliant

头型：十六进制
驱动方式：外六角
测量系统：英寸
螺纹方向：右手
螺纹尺寸：1/4“-20
螺丝尺寸十进制等效：0.25“
线程类型：UNC
螺纹配合：2A级
长度：3/4"
线程：完全线程化
线程间距：粗糙
头
宽度：7/16"
身高：5/32"
紧固件强度等级/等级：8级
材料：钢
表面处理：锌铝涂层
抗拉强度：150,000 psi
硬度：Rockwell C33
规格符合：ASME B18.2.1，SAE J429
RoHS指令：符合

Made from Grade 8 steel, these screws can be used in high-stress applications such as valves, pumps, motors, and automotive suspension systems. They are at least 25% stronger than medium-strength steel screws. Grade 8 steel hex head screws are marked with six radial lines. Length is measured from under the head.

Zinc-aluminum-coated steel screws are about five times as corrosion resistant as zinc yellow-chromate plated screws and have good resistance to salt water and acids. Also known as ultra coat and armor coat. To maintain corrosion resistance, use these screws with zinc-aluminum-coated nuts and washers.

Match the thread spacing of mating components. Coarse threads are the industry standard; choose these screws if you don’t know the threads per inch. Screws that meet ASTM A354 BD or SAE J429 comply with specifications and testing requirements for material quality. Screws that meet ASME B18.2.1 or ASME B18.6.3 comply with specifications for dimensional standards.
这些螺钉由8级钢制成，可用于高应力应用，如阀门，泵，电机和汽车悬架系统。 它们比中等强度的钢螺钉强至少25％。 8级钢六角头螺钉标有六条径向线。 长度从头部下方测量。

镀锌铝钢螺钉的耐腐蚀性是镀锌黄铬酸盐螺钉的五倍左右，具有良好的耐盐水和耐酸性。 又称超大衣和盔甲大衣。 为了保持耐腐蚀性，请将这些螺钉与镀锌铝螺母和垫圈一起使用。

匹配配合组件的螺纹间距。 粗线是行业标准; 如果您不知道每英寸的螺纹数，请选择这些螺钉。 符合ASTM A354 BD或SAE J429的螺钉符合材料质量的规格和测试要求。 符合ASME B18.2.1或ASME B18.6.3的螺钉符合尺寸标准规范。

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