Hex Washer Head Bolts | Serrated Flange Cap Screws | M4-M12 304 Stainless Steel

These 304 stainless steel hex washer head bolts combine a hexagon head with an integrated serrated flange for superior fastening performance. The one-piece design acts as a built-in washer, providing ...
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Questions about this product
- Do I need to buy separate lock washers to use with these flange bolts?
- No, you don't need separate washers. The integrated serrated flange bites directly into the mating material to prevent loosening from vibration. They work perfectly with standard metric nuts or tapped holes of the same thread size.
- Can I use these stainless steel bolts for outdoor projects without them rusting?
- Yes, these bolts are made from 304 stainless steel, which offers excellent resistance to atmospheric corrosion. They are ideal for outdoor equipment and wet environments. However, for direct saltwater submersion, you should look at 316-grade steel instead.
- How much physical tension and force can these bolts handle before failing?
- These A2-70 grade bolts have a minimum tensile strength of 505 MPa and a yield strength of 210 MPa. This provides plenty of reliable clamping force for heavy-duty machinery. Just make sure you don't exceed these limits in critical load-bearing assemblies.
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