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| Product Name | Mushroom Head Square Neck Carriage Bolts |
| Standard | DIN 603, ASME B18.5, etc. |
| Material | Stainless Steel 304/316 |
| Finish | Dacromet Coating, Plain, Passivated, etc. |
| Thread | Coarse Thread |
| Size | M5~M16 |
| Length | 20mm-80mm |
18-8 stainless steel carriage bolts have good chemical resistance and may be mildly magnetic.
316 stainless steel carriage bolts are more corrosion resistant than 18-8 stainless steel carriage bolts, these bolts have excellent resistance to chemicals and salt water.
They're a good choice for ACQ-treated (arsenic-free) lumber. A square neck keeps them from turning when tightening a nut. A smooth, rounded head provides a finished look.





All machine screws could paint nylon glue to the threads adds friction to resist loosening from vibration.
Our nylon patch screws could reuse 5 times. Meet Standard: IFI 125, IFI 525, DIN 267-28.












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