DB carries a complete line of Domestic Self Drilling Fasteners along with a complete line of Domestic A325 hex bolts and TC Bolts. Some fasteners are just not available domestically anymore. These include most A307 hex bolts, drywall screws and smaller bolts and nuts. Need domestic? Call DB Building Fasteners for all your Domestic needs.
Long Life Fasteners come in many different coatings and or heads. You can apply a long life coating to a zinc plated fastener and the coating will prolong the life of the fastener over normal zinc. Some of these coatings you may have heard of before, Climaseal from ITW Buildex, Stalgard from Elco and DB carries its own Mag life. Normal zinc will only make it to about 10 to 20 hours to red rust in a salt spray test, long life coatings can go anywhere from 500 to 1,000 hours in salt spray. Another test for coatings is called Kesternich. While not as well know as salt spray, Kesternich testing is where the fastener is put into a chamber at a specific temperature and acid solution for a specific time. Normal zinc plated fasteners only last 1 cycle to red rust. Long life coated fasteners can make it anywhere from 5 to 10 cycles.
Long life can also mean a special head on the fastener. These heads can either be a Zinc Die Cast head which makes the head of the fastener not rust, but the Zinc Die Cast can turn dark grey to black near the ocean or other highly corrosive areas, these Zinc Die Cast heads are available on almost any fastener. DB calls its Zinc Die Cast fasteners, ZDC.
Another long life fastener is ITW Buildex’s SCOTS fastener. This fastener has a head of 300 stainless, hence the head will never rust.
If you truly want a long life fastener try DB’s UltraStainless fasteners, they will never rust, period!