Product DescriptionDIN571 hexagon head wood screws have higher
torque force than pan head and countersunk head tapping screws,
better control of torque required for rotation, and higher strength
after combination. The engineering standard definition of thread
rolling self-tapping screws is higher and more specific than that
of forming or cutting self-tapping screws, making thread rolling
self-tapping screws a real "construction" fastener.There are coarse
rod and full thread, coarse rod products have screw and thread, one
end of the screw forms a pointed head, the tooth distance is
relatively large, and the chip free tap is similar to, can be
directly screwed in without tapping teeth, the lead of the thread
is larger than the mechanical thread, the thread length is greater
than or equal to 0.6 of the specification length, the thread Angle
is 600, the product specification M4 -- M20, etc.FAQ Q: Are
you trading company or manufacturer ?A: We are factory. Q:
How long is your delivery time?A: Generally it is 15-20 goods are
in stock. or it is 40-60 days if the goods are not in stock,
it is according to quantity. Q: Do you provide samples ? is
it free or extra ?A: Yes, we could offer the sample for free charge
but dear you need to bear the courier cost. Q: What is your
terms of payment ?A: Payment ≤ 2500 USD,100% in advance.
Payment ≥ 2500 USD, 30% T/T as deposit, 70%
balance against the B/L copy/* March 10, 2023 17:59:20
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