The Camloc 27S3-4 Stud is a phillips recess, flush head fastener stud from the Calmoc 2700 series. Has a length .700" of and a total grip thickness of .120"-.149". Constructed from steel with zinc plating. These light-duty Camloc studs are rated for 200 pounds working strength (ultimate tensile strength 300 pounds).
This is nearly identical to my first pilot logbook, but with a new smooth matte black cover. This logbook checks all the boxes from student pilot through Commercial. It might just be the only logbook you’ll ever need. Fly safe!