Feb 19, 2002 · the danger is that oxide removed in the bolt area (eg. by exposing scratching inside the bolt holes)will set up a very active corrosion cell (small anode). this is commenly seen in bottoms of aluminum boats where people have used s/steel bolts and the bolts float around an oversised corroded bolthole.
Flange screws, hex flange bolts, or frame bolts are designed with a built-in washer underneath the head of the bolt — distributing the clamping load over a wider area. this eliminates the need for a separate washer, as it provides the same holding power. engineered with quality in mind, earnest’s flange bolts are made to property class 10.9 standard to provide the durability and strength.
Hanger bolts. double-ended thread with lag screw thread on one end & machine screw thread on the other. available in steel & stainless steel. heavy hex bolts. b7 alloy steel in plain finish. wider hex head provides greater wrenching area for heavy duty industrial work. hex cap screws. most common type of hex bolt.
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