| Customization: | Available |
|---|---|
| Type: | Hexagon Head |
| Connection: | Common Bolt |
|
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Product: Heavy Hex structural Bolts
Size: M02 to M33
Length: 3 mm to 200 mm
A193 B7 Heavy hex bolts offer a wider head than that of a standard hex bolt and are made of low-to-mid-carbon steel. The large head offers a greater bearing surface that distributes the clamping load over a greater area. Made of Alloy steel, AISI 4140/4142 quenched and tempered.
|
Element
|
B7 (AISI 4140)
|
|---|---|
|
Carbon
|
0.38 - 0.48%
|
|
Manganese
|
0.75 - 1.00%
|
|
Phosphorus, max
|
0.035%
|
|
Sulfur, max
|
0.040%
|
|
Silicon
|
0.15 - 0.35%
|
|
Chromium
|
0.80 - 1.10%
|
|
Nickel
|
|
|
Molybdenum
|
0.15 - 0.25%
|
Mechanical Properties of ASTM A193 B7 Bolts
|
Grade
|
Size
|
Tensile ksi, min
|
Yield, ksi, min
|
Elong, %, min
|
RA % min
|
HBW
|
HRC
|
|---|---|---|---|---|---|---|---|
|
B7
|
Up to 2-1/2
|
125
|
105
|
16
|
50
|
321 max
|
35 max
|
|
2-5/8 - 4
|
115
|
95
|
16
|
50
|
|||
|
4-1/8 - 7
|
100
|
75
|
18
|
50
|
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