Cable Bullet post hole covers are designed for use with 3/16"-1/4" max. cable pass-through holes. Larger holes will not allow the screw to anchor to the post.
Each post hole cover is secured to the post with one #4-24 x 5/8" stainless steel 6-lobe socket head cap screw, using a T10 x 2" star drive power bit (sold separately). The screw will self-tap in softwood posts. For hardwood posts, thin aluminum (1/16" thick), and composite or vinyl sleeves drill a 3/32" pilot hole. For thicker aluminum walls (1/8"-1/4") drill a 7/64" hole and use a manual screwdriver. Using a drill increases the likelihood of snapping the screw off in thicker aluminum.
Sold individually, one cap and one screw each. Order two for each cable pass-through hole.
Made in the USA.
For pass-through posts that break a straight run, e.g. a pass-through post at the top of a set of stairs, or a two-post corner configuration, we recommend using Cable Bullet dummy tensioners for added strength.