Stainess steel knurled pin Surface :Plain Machined and turned SGS audited More than 20 ... special fastener 1,Name: Stainess steel knurled pin;Stainess steel pin;Knurled pin2,For the similar pin,what can we do ?(1), Ability ... for the material of this kind of pin: Grade3.6,4.6,4.8,5.6,6.8 ... hardware fastener ,especially the cutting/turning parts. Stainess steel knurled pin