What is a flat head bolt called?
Flat Head Screws, also called Countersunk Screws, are conical with a flat outer face and a tapering inner face. An advantage to this type of screw is that very little of the head protrudes beyond the surface, allowing it to sink into the material.
What is ASTM A574?
A574 is a ASTM International specification for steel socket head cap screws. A574 covers quenched and tempered alloy steel hexagon socket-head cap screws, 0.060 through 4″ in diameter where high strength is required.
Is Torx better than Philips?
Fortunately, Phillips and Torx drives both center well and do not usually wander off contact….
| Category \ Head: | Phillips | Torx |
|---|---|---|
| max torque | lower | higher |
| centering | excellent | good |
| overload behavior | cam-out | bit/screw fail |
| ergonomics | average | excellent |
What is a Panhead bolt?
Pan head screws are a common head type of non-countersunk screw head used in wood screws, self-tapping screws, self-drilling screws, and machine screws. They have wide heads, a flat bearing surface, high vertical, chamfered, or curved sides, and a flat or slightly domed top surface with a recessed socket.
What grade bolt is ASTM A574?
ASTM A574/A574M covers chemical, mechanical, tensile, wedge test requirement, etc. As a part of supplementary requirement, this specification allows users to select chemical requirement specific to grades like AISI 4037, 4042, 4137, 4140, 4142, 4145, 4340, 8740, 5137M & 51B37M.
What grade is an 8.8 bolt?
Grade 8.8 Bolts belong to the DIN 933 grade 8.8 standard. This is a structural grade for bolts. This is a medium carbon steel bolt specification. These bolts are heat treated by quenched and tempered methods.
What size is a 10 bolt?
The 10-bolt, 8.2-inch differentials use .375-inch right-hand thread bolts in the ring gear. The 8.5-inch pinion diameter is 1.625 inches, whereas the 8.2-inch is smaller at 1.435 inches.
What size is a metric bolt?
Metric bolt sizes range from 10 mm to 24 mm. Odd diameters such as 19 mm and 21 mm become common in this range. Standard bolt sizes range from 5/16-inches to 1 inch, again increasing in increments of 1/16-inch.
What are the dimensions of an U – bolt?
These are essentially a single piece of mild or stainless steel bar that is threaded at the end of either side and then shaped as the letter U. U Bolt Dimensions range from M6 to M20 in terms of thread diameter, with various lengths and specials also available.
What is the diameter of a bolt?
Typically, machine bolt sizes range from 1/4″ to 1 1/4″ for square heads and 3/8″ to 1 3/4″ in diameter for hex heads, and lengths span from about 3/4″ to 18″ for square and 6 1/2″ to 24″ for hex heads. Measure length from under the head to the threaded end of the bolt.