12L14 Steel Thumb Screw, Black Oxide Finish, Knurled Head, Meets DIN 464, 20mm Length, Fully Threaded, M10-1.5 Metric Coarse Threads, Imported
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Questions & Answers
Its threads are 25 mm, and its head plus shoulder measures 15 mm. This is an overall length of 40mm. You should note There is an abrupt end to the threads 1.5mm
Unfortunately, I don't have one in front of me, but I believe the length of the threads makes all the difference. There's a lot to like about them.
It was one per pack, from what I remember. There would be 16 of them you'd need to order. Those many items may require you to contact the seller directly and ask if they could give you a discount.