![engine theory - Air trapped inside threaded "blind" hole vs. hole integrity - Motor Vehicle Maintenance & Repair Stack Exchange engine theory - Air trapped inside threaded "blind" hole vs. hole integrity - Motor Vehicle Maintenance & Repair Stack Exchange](https://i.stack.imgur.com/4SrJX.jpg)
engine theory - Air trapped inside threaded "blind" hole vs. hole integrity - Motor Vehicle Maintenance & Repair Stack Exchange
![(2pcs) 304 Stainless Steel Hexagon Hollow Threaded Through Hole Suit Bolts, for fitting mechanical shaft fasteners, M12x35mm Aperture (6.2mm). (2pcs) 304 Stainless Steel Hexagon Hollow Threaded Through Hole Suit Bolts, for fitting mechanical shaft fasteners, M12x35mm Aperture (6.2mm).](https://m.media-amazon.com/images/I/51AwDOkdd3L._AC_UF1000,1000_QL80_.jpg)
(2pcs) 304 Stainless Steel Hexagon Hollow Threaded Through Hole Suit Bolts, for fitting mechanical shaft fasteners, M12x35mm Aperture (6.2mm).
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