What size is a JH bolt?
The specification for this material grade fasteners is the ASTM A324. The diameter of the 8.8 Jh Bolt range from 20mm to 100mm. They can come with different finishes as well.
What do the letters on bolts mean?
The three-letter code is the manufacturer code (for example, HKT stands for Hau Kwang Enterprises) and the numbers (if metric) or radial lines (if SAE) refer to the bolts’ strength. If there are no numbers or lines present, assume the bolt is no better than a grade 2 (low strength).
What do 3 hash marks on a bolt mean?
grade 5
@Mike- The three hash marks indicate grade 5, the triangle with a swirl is the manufacturer’s stamp for Bowman Distribution. They are a distributor that has private label bolts made with their head mark.
What grade is a 307B bolt?
Grade B Bolts
Grade B Bolts are marked or stamped with “307B” along with optional manufacturer’s Initial or logo.
What is a 10.9 JH bolt?
Grade 10.9 metric bolts are manufactured using medium carbon steel, medium carbon steel alloy and low carbon boron steel that has been quenched and tempered. Used in automotive applications and for bolting large and forged parts, metric 10.9 bolts exhibit high tensile strength and good wear resistance.
What does 8.8 stamped on a bolt mean?
So, in English, a Property Class 8.8 bolt is a bolt with a nominal tensile strength of 800 MPa and a nominal yield strength that is 80% of that nominal tensile strength, so 640 MPa.
What grade is a f593c bolt?
18-8
3/8″-16 x 1-1/2″ Plain Finish ASTM F593C Grade 18-8 Hex Washer Flange Bolt
| System of Measurement | Imperial (Inch) |
|---|---|
| Length | 1-1/2″ |
| Material | Stainless Steel |
| Type | Flange Bolt |
| Grade | 18-8 |
What is Grade 8 nuts and bolts?
A grade 8 bolt is stronger than the more commonly used grade 5. It is made of alloy steel and has six radial lines on the top of the bolt head. Grade 8 bolts have a tensile strength of 150,000 pounds per square inch.
What are bolt grade markings?
The grade of a bolt determines the maximum amount of stress (tensile strength) that the bolt can handle. Tensile strength is the amount of pull the bolt can withstand before breaking. The method used for tightening the bolt is also dependent upon the grade of the bolt.