ASME: 1/2"~2 1/2" Bolt Stainless Steel 304/304L Duplex Stainless Steel Fasteners
1.What is a hex bolt?
Hex bolts have hexagonal heads and machine threads for use with a nut or in a tapped hole. Also known as hex cap screws or machine bolts.
Use pliers to aid in turning a key wrench for screws that are firmly stuck. Use a hammer to tap against the hex-key wrench in extreme cases. Pour a few drops of household oil or spray a shot of aerosol lubricant on screw heads that do not come loose with the additional tools.
Hex bolts range in size from 1/4" to 4" in diameter; 1/4" to 1 1/2" sizes are commonly available. Lengths range from 3/8" to 24"; 1/2" to 10" is typical. From 3/8" to 1", lengths are in 1/8" increments. Between 1" and 4", 1/4" steps are common.
Hex bolts can be used for infrastructure that requires a strong fastener with high tensile strength properties due to their design and base materials. As mentioned, they can also be used in tight spaces with limited access because tools can access them from all angles due to the six points of contact on the hex head.
A nut is a type of fastener with a threaded hole. Nuts are almost always used in conjunction with a mating bolt to fasten multiple parts together.
Which side of nut goes down? In my experience if you are not using pal nuts put the square side down . if you are using them put the beveled side down as the pal nut gets a better grip against a flat surface. On curved washers The beveled side goes down always.
3.Stainless steel bolt
It is a common misconception that stainless steel is stronger than regular steel. ... Therefore, when compared to regular steel, the stainless alloys used in bolts are slightly stronger than an un-hardened (grade 2) steel but significantly weaker than hardened steel fasteners.
Stainless steel screws are rust-resistant throughout the entire screw, not just on the surface. The other screws are only covered with a rust-resistant coating on their surface, which will break down or wear off over time. ... Stainless steel is undoubtedly the best material for resisting rust and corrosion in screws.
18-8 Stainless Steel:
(18% Chrome, 8% Nickel, . 08% Maximum Carbon) - 18-8 Stainless refers to 300 series stainless steel. 303 and 304 Stainless are the most commonly listed grades, the standard grade for stainless fasteners. They are corrosion-resistant and durable.
The vast majority of stainless steel fasteners available are produced to ISO 3506 Class 70 (this designates a minimum tensile strength of 700 MPa) and are marked as such. If there is no marking it should be assumed the product is Class 50 (minimum tensile strength of 500 MPa).
Grade 8 bolts have 6 evenly spaced radial lines on the head." Unlike stainless steel, which is highly resistant to corrosion, steel, however reinforced, will oxidize over time and rust. Grade 8 bolts that are not galvanized or plated with yellow zinc, however, are cheaper.