M4 knurled head stainless steel thumb screw
Thumb Screw：
Stainless steel thumb screws are harder than aluminum thumb screws and brass thumb screws.
Features:
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1.Steel thumb screw have a round, knurled head.
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2.Metal knurled thumb screws can be easily assembled and disassembled without tools.
Packing:
PE bag+carton or customer packaging is accepted
Shipping Method:
By Air, By Sea, International Express, such as DHL, UPS, FedEX, TNT.
Thumb Screw technical drawing:
