Thanks to the sturdy packaging structure and durable product design, Premium Engineered Hexalobular Head Flange Bolts are almost immune to damage during transportation. The nut and threaded parts are made of high-grade steel, the most common ones are 8.8 or 10.9 grades, which can withstand even collisions or impacts. The packaging also prevents the nuts from rubbing against each other or bending. For smaller orders, each nut usually has a separate slot to protect the serrated head.
Even if it is compressed during transportation (such as during sea transportation under variable weather conditions) - these Premium-Engineered Hexalobular head flange bolts can still remain in good condition upon arrival at the destination and function normally.
If the Premium Engineered Hexalobular Head Flange Bolts are treated with the appropriate coating, they can achieve a waterproof function. Options such as zinc-nickel coating or ceramic coating can effectively prevent water from entering, so these bolts are very suitable for use in outdoor construction or maritime fields.
When we pack the bolts, we also put waterproof material inside the boxes and crates. After doing this, they will not be damaged even if they are exposed to rain or humid environment during transportation. Thanks to the coating and the packaging, the bolts won’t rust—even if they’re stored somewhere humid. That helps them last longer.
Mon | M4 | M5 | M6 | M8 | M10 | M12 | M14 | M16 | M18 | M20 |
P | 0.7 | 0.8 | 1 | 1|1.25 | 1|1.25|1.5 | 1.25|1.5|1.75 | 1.5|2 | 1.5|2 | 1.5|2|2.5 | 1.5|2|2.5 |
da max | 4.7 | 5.7 | 6.8 | 9.2 | 11.2 | 13.7 | 15.7 | 17.7 | 20.2 | 22.4 |
dc max | 7.66 | 8.79 | 11.05 | 14.38 | 17.77 | 20.03 | 23.36 | 26.75 | 30.14 | 33.53 |
ds | 3.55 | 4.48 | 5.35 | 7.19 | 9.03 | 10.86 | 12.70 | 14.70 | 16.38 | 18.38 |
e | 4.6 | 5.55 | 7.3 | 9.2 | 10.95 | 12.65 | 16.4 | 18.15 | 21.85 | 21.85 |
k max | 4.5 | 5.5 | 6.5 | 8.2 | 10 | 12 | 14 | 16 | 18 | 20 |
k min | 4.25 | 5.25 | 6.25 | 7.95 | 9.75 | 11.75 | 13.75 | 15.75 | 17.75 | 19.75 |
r min | 0.2 | 0.2 | 0.25 | 0.4 | 0.4 | 0.6 |
0.6 |
0.6 |
0.6 |
0.6 |
h min | 1.05 | 1.45 | 1.55 | 2.25 | 2.95 | 3.6 | 3.9 | 4.8 | 4.9 | 6.2 |
h max | 1.3 | 1.7 | 1.8 | 2.5 | 3.2 | 3.9 | 4.2 | 5.1 | 5.2 | 6.5 |
Q:Are Premium Engineered Hexalobular Head Flange Bolts suitable for high-temperature environments?
A: If the raw material of the hexagonal head flange bolt has high temperature resistance, its performance can remain stable even in extremely high temperature environment. Ordinary stainless steel hexagonal flange bolts can be used in an environment of 300-500℃ in most cases. However, due to the different alloy grades of the bolts, the actual temperature they can adapt to will also vary. Therefore, it is crucial to clearly understand the high temperature conditions of the application environment and select bolt materials that can work stably within this temperature range.