Grade 9 Yellow Chromate Alloy Steel Hex Bolt, 3/8"-16, 1" Length (Pack of 10) Reviews
Grade 9 Yellow Chromate Alloy Steel Hex Bolt, 3/8"-16, 1" Length (Pack of 10) Feature
- Hex Bolts feature a chamfered point
- Coated with yellow zinc chromate for corrosion resistance
- Hex head for easy driving
- Length is measured from under the head
- Coarse threads are better for brittle materials, and will assemble and disassemble more quickly than fine threads
Grade 9 fasteners (also referred to as Grade L9) are extremely strong and are made of a high-grade alloy steel. They are grade-marked on the head with nine radial lines, a dot, and the characters L9, and have a minimum tensile strength of 180,000 psi. Yellow Zinc Chromate fasteners have been coated with zinc and with yellow chromate. As a result they offer corrosion resistance that is slightly higher than clear zinc.
Hex head fasteners can be driven with simple wrenches, and require minimal clearance above the fastener because they can be driven or loosened from the side.
A threaded fastener's size name includes information about the major external diameter, followed by the threads per inch, which indicates if it is coarse or fine. Coarse threads are better when working with brittle materials; they are sturdier and are easier to thread and unthread compared to fine. Coarse threading also allows for thicker coatings and platings.
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Jun 20, 2011 01:25:03
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