What do blue bolts mean?
The word bolt refers to a lightning bolt (a flash of lightning), and the blue refers to a clear sky (a stormy sky might be grey or black). A bolt from the blue often appears in news stories and other descriptions of unexpected events.
What are blue screws used for?
Blue coated anchor screws are used to attach materials to concrete, concrete block or brick.
Can you remove a through bolt?
Usually, a screwdriver, pipe wrench, or vise grips can unthread the protruding bolt, leaving the female anchor flush with the concrete. If needed, a hammer can be used to knock the anchoring tube below the floor, and in some cases these tubes can simply be pulled out of the hole entirely.
Why are some screws painted blue?
TIL The blue paint on laptop screws is actually threadlocker meant to keep the screws from loosening due to vibration.
What size are blue screws?
The standard blue screw comes in two diameters of 3/16” and 1/4” while large diameter Tapcons comes in of 3/8”, 1/2”, 5/8” and 3/4”. The diameter of the blue screw to use for any application is determined by the holding values required, by the diameter of the hole in the fixture or if an engineer has specified it.
Are anchor bolts removable?
When it comes to general fastening applications into concrete most might not know what to use. Unlike chemical anchoring or sleeve anchors, concrete screw anchors can be removed with ease leaving the hole clear of debris – making miscalculations a quick fix.
Why are my drywall anchors pulling out?
It could be that you are hanging too much weight on the anchors. Drywall and plaster are not designed to carry loads, so applying too much weight to a single point will cause the anchor to come loose. You may also run into trouble if the item you are attaching to the wall is too thick.
What are Xylan bolts?
Xylan® is a fluoropolymer topcoat, afford high lubricity (co-efficient of friction as low as . 02), and corrosion resistance of approximately 1000 hours when applied over phosphate, and up to 2000 hours when applied over electroplating. It is done to improve Make up and break out torque of bolts.