- Class 8.8 steel is often used in applications where strength is the primary concern
- Zinc plating resists corrosion and has a yellow reflective appearance
- Flange hex head has a serrated flange for additional grip on the mating surface that resists loosening
- Meets DIN 6921 specifications
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Class 8.8 Steel Cap Screw, Yellow Zinc Plated Finish, Flange Hex Head, External Hex Drive, Meets DIN 6921, Flanged, Serrated, Right Hand Threads, Metric
|Price:||$4.33 - $14.41|
|System of Measurement||Metric|
|Specification Met||DIN 6921|
|Drive Style||External Hex|
|Exterior Finish||Yellow Zinc Plated|
|Head Style||Flange Hex|
|Thread Style||Right Hand|
The class 8.8 steel cap screw has a yellow zinc plated finish, has a serrat... See more product details
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The class 8.8 steel cap screw has a yellow zinc plated finish, has a serrated flange hex head with an external hex drive, and meets Deutsches Institut für Normung DIN 6921 specifications. Class 8.8 steel, composed of quenched and tempered medium carbon steel, is often used in applications where strength is the primary concern. The material is magnetic. The zinc plating offers corrosion resistance and has a yellow reflective appearance. The flange hex head has six flat sides that a wrench can grip to turn from the side, enabling use when there is no space above the head for a screwdriver. The serrated flange acts like a washer to increase the fastener's bearing surface and distribute the clamping force over a larger area, providing a grip that resists loosening.
Cap screws and hex bolts are threaded fasteners with thick hex-shaped heads that can be used with threaded nuts or in areas with limited clearance above the tapped (threaded) hole. Cap screws have slightly different dimensions than hex bolts and have a washer face underneath their unflanged hex head to act as a large bearing surface against the mating material.
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Since they did not ship what was purchased and they therefore do not match the existing hardware they are going back and I will avoid in the future.