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STUDBOLTS聽 HEX HEAD BOLT聽 HEAVY HEX NUT聽 SCREWS
ASTM A193 B7 B7M, 聽ASTM A194 2H
ASTM A320 L7 L7M

 
Chemical Requirement
AISI聽 4140聽 4142聽 4145
Grade

C

Mn

P

S

Si

Mo

Cr

B7,
B7M

 

 

Max

Max

 

 

 

0.37-0.49

0.65-1.10

0.035

0.040

0.15-035

0.15-0.25

0.75-1.20

L7, L7M

0.38-0.48

0.75-1.00

0.035

0.040

0.15-0.35

0.15-0.25

0.80-1.10

 

Mechanical properties

Grade

Diameter

Tensile Strength kpsi (Mpa)

Yield Strength 0.2% Offset
kpsi (Mpa)

Elongation %

Hardness
MAX

 

 

min

min

min

HBS

HRC

B7

<鈥2-1/2
鈥2-1/2鈥-4鈥
4鈥 -聽 7鈥

125
115
100

105
95
75

50
50
50

-

35
35
35

B7M

<鈥2-1/2

100

80

50

235

B99

L7

<鈥2-1/2

125

105

50

 

20-28

L7M

<鈥2-1/2

100

80

50

235

B99

We can provide our quality A193 B7 B7M L7 L7M聽聽 A194 2H Stud bolts with any world know third party inspection Certifications as following to make ensure the best quality
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mainproducts:
A193 stud bolt hex bolt A194 hex nut A320 stud bolt hex bolt A453 stud bolt hex bolt hex nut A182 stud bolt hex bolt hex nut Monel 400,k500 stud bolt hex bolt hex nut Incoloy 625.718, 925 stud bolt hex bolt hex nut Hastelloy stud bolt hex bolt Nickle stud bolt hex bolt Titanium stud bolt hex bolt hex nut
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