Grade

Marking


Specification


Material


Nominal
Size

Inches


Proof
Load

Stress

ksi


Yield

Strength

Min, ksi


Tensile

Strength

Min, ksi


Bay Bolt - Serving the manufacturing, construction<br data-lazy-src=


SAE
J429 - Grade 1


Low
or Medium Carbon Steel


1/4
through 11/2


33


36


60


SAE
J429 - Grade 2


1/4
3/4 over 3/4 11/2


55
/ 33


57
/ 36


74
/ 60


Bay Bolt - Serving the manufacturing, construction and water works industries


ASTM
A307 - Grade A


1/4
through 4






60


ASTM
A307 - Grade B


1/4
through 4






60
/ 100


ASTM
A307 - Grade C


Props.
conforms to A36


1/4
through 4




36


58
/ 80


Bay Bolt - Serving the manufacturing, construction and water works industries


SAE
J429 - Grade 5ASTM A449 - Type 1


Medium
Carbon Steel,

Quenched and Tempered


1/4
through 1

over 1 through 11/2


85

74


92

81


120

105


ASTM
A449 - Type 1


over
11/2 through 3


55


58


90


Bay Bolt - Serving the manufacturing, construction and water works industries


ASTM
A325 - Type 1


Medium
Carbon Steel,

Quenched and Tempered


1/2
through 1

over 1 through 11/2


85

74


92

81


120

105


Bay Bolt - Serving the manufacturing, construction and water works industries


ASTM
A325 - Type 2


Low
Carbon Martensite Steel,

Quenched and Tempered


Bay Bolt - Serving the manufacturing, construction and water works industries


ASTM
A325 - Type 3


Atmospheric
Corrosion Resistant Steel,

Quenched and Tempered


Bay Bolt - Serving the manufacturing, construction and water works industries


ASTM
A193 - B7











AISI
4140

4142 or 4145


High

Temperature

Service


1/4
through 21/2

over 21/2 through 4

over 4 through 7

105

95

75


105

95

75


125

115

100


Bay Bolt - Serving the manufacturing, construction and water works industries


ASTM
A193 - B8 Class 1


AISI
304

High Temperature Service


1/4
and larger




30


75


ASTM
A320 - B8

Class 1


AISI
304

High Temperature Service


1/4
and larger




30


75


Bay Bolt - Serving the manufacturing, construction and water works industries


ASTM
A193 - B8M

Class 1


AISI
316

High Temperature Service


1/4
and larger




30


75


ASTM
A320 - B8M

Class 1


AISI
316

High Temperature Service


1/4
and larger




30


75


Bay Bolt - Serving the manufacturing, construction and water works industries


ASTM
A324 - Grade BC


Medium
Carbon Alloy Steel,

Quenched and Tempered


1/4
through 21/2

over 21/2 through 4


105

95


109

99


125

115


Bay Bolt - Serving the manufacturing, construction and water works industries


SAE
J429 - Grade 8


Medium
Carbon Alloy Steel,

Quenched and Tempered


1/4
through 11/2


120


130


150


ASTM
A320 - B8M

Class 1


1/4
through 21/2

over 21/2 through 4


120

105


130

115


150

140


Bay Bolt - Serving the manufacturing, construction and water works industries


ASTM
A490 - Type 1


Medium
Carbon Alloy Steel,

Quenched and Tempered


1/2
through 11/2


120


130


150-170


Bay Bolt - Serving the manufacturing, construction and water works industries


ASTM
A490 - Type 1


Atmospheric
Corrosion Resistant Steel,

Quenched and Tempered


1/2
through 11/2


120


130


150-170


Bay Bolt - Serving the manufacturing, construction and water works industries


ISO
R898 - Class 8.8


Alloy
Steel,

Quenched and Tempered


all
sizes through 11/2


85


92


120


Bay Bolt - Serving the manufacturing, construction and water works industries


ISO
R898 - Class 10.9


Alloy
Steel,

Quenched and Tempered


all
sizes through 11/2


120


130


150