We mainly supply ASTM A193 Gr. B8, B8M, B8T, B8C hex bolts, stud bolts, allen bolts, and ASTM A194 Gr. 8, 8M, 8T, 8C heavy hex nuts
Our products have been widely used in oil&gas engineering, petro-chemical engineering, power station, offshore engineering, nuclear engineering, heavy machinery, skyscraper etc.
Specification | Class | Material | Nominal Size Range (in.) | Mechanical Properties | ||||
Yield Strength, min, 0.2 % offset, ksi | Tensile Strength, min, ksi | Elongation in 4 D, min % | Reduction of Area, min % | Hardness, max | ||||
ASTM A193 Grade B8 | Class 1 Class 1A | AISI 304 | All diameter | 30 | 75 | 30 | 50 | 223HB or 96HRBC |
ASTM A193 Grade B8M | AISI 316 | |||||||
ASTM A193 Grade B8T | AISI 321 | |||||||
ASTM A193 Grade B8 | Class 2 | AISI 304 Strain Hardened | 3/4 and under | 100 | 125 | 12 | 35 | 321HB or 35HRC |
3/4 to 1 incl | 80 | 115 | 15 | |||||
1 to 1-1/4 incl | 65 | 105 | 20 | |||||
1-1/4 to 1-1/2 incl | 50 | 100 | 28 | 45 | ||||
ASTM A193 Grade B8M | 3/4 and under | 95 | 110 | 15 | ||||
3/4 to 1 incl | 80 | 100 | 20 | |||||
1 to 1-1/4 incl | 65 | 95 | 25 | |||||
1-1/4 to 1-1/2 incl | 50 | 90 | 30 | |||||
ASTM A193 Grade B8T | AISI 321 Strain Hardened | 3/4 and under | 100 | 125 | 12 | 35 | ||
3/4 to 1 incl | 80 | 115 | 15 | |||||
1 to 1-1/4 incl | 65 | 105 | 20 | |||||
1-1/4 to 1-1/2 incl | 50 | 100 | 28 | 45 | ||||
ASTM A193 Grade B8M | Class 2B | AISI 316 Strain Hardened | 2 and under | 75 | 95 | 25 | 40 | |
2 to 2-1/2 incl | 65 | 90 | 30 | |||||
2-1/2 to 3 incl | 55 | 80 | ||||||
Class 2C | 2 and under | 65 | 85 | 60 | ||||
Over 2 | 60 | |||||||
Specification | Material | Class | Nominal Size (In.) | Proof Load Stress (ksi) | Hardness Rockwell | Nut Type | ||
Min | Max | |||||||
ASTM A194 Grade 8 | AISI 304 | Class 1 | All diameter | 80 | B60 | C32 | Heavy hex nut Hex thin nut Hex nut | |
ASTM A194 Grade 8M | AISI 316 | Class 1 Class 2 | 110 | |||||
ASTM A194 Grade 8T | AISI 321 | 110 |
Quick Details
Place of Origin: Jiangsu, China (Mainland)
Brand Name: QFC,HPF
Model Number: 1/2"-4"
Standard: ANSI
ASTM A193: B8, B8M, B8T, B8C stud bolts
ASTM A194: 8, 8M, 8T, 8C nuts