Q U ALITY ISO - AALL AMERICAN Fasteners Bolt Stud Grade Markings and Strength Chart Author Subject...
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GRADE IDENTIFICATION MARKINGS - INCH STEEL BOLTS Grade Marking Specification / Description Material Nominal Size inches Proof Load psi Tensile Strength min psi Yield Strength min psi Rockwell Hardness min max SAE J429 - Grade 1 Bolts, screws, studs Low or medium carbon steel 1/4 - 1 1/2 33000 60000 36000 B70 B100 SAE J429 - Grade 2 Bolts, screws, studs Low or medium carbon steel 1/4 - 3/4 >3/4 -1 1/2 55000 33000 74000 60000 57000 36000 B80 B70 B100 B100 SAE J429 - Grade 4 Studs Medium carbon cold drawn steel 1/4 - 1 1/2 65000 115000 100000 C22 C32 SAE J429 - Grade 5 Bolts, screws, studs Medium carbon steel or carbon steel with additives, quenched & tempered 1/4 - 1 >1 - 1 1/2 85000 74000 120000 105000 92000 81000 C25 C19 C34 C30 SAE J429 - Grade 5.1 Sems Low or medium carbon steel, quenched & tempered No. 4 - 5/8 85000 120000 92000 C25 C40 SAE J429 - Grade 5.2 Bolts, screws,studs Low carbon Boron steel, quenched & tempered 1/4 - 1 85000 120000 92000 C26 C36 SAE J429 - Grade 8 Bolts & screws Medium carbon / alloy steel with additives, quenched & tempered 1/4 - 1 1/2 120000 150000 130000 C33 C39 SAE J429 - Grade 8.1 Studs Medium carbon alloy or SAE 1541 steel, elevated temperature drawn 1/4 - 1 1/2 120000 150000 130000 C33 C39 SAE J429 - Grade 8.2 Bolts & screws Low carbon Boron steel, quenched & tempered 1/4 - 1 120000 150000 130000 C33 C39 L . 9 L.9® (Grade 9) Bolts, nuts, washers * (Proprietory product) High strength alloy steel 1/4 - 1 1/2 145000 180000 155000 C38 C42 307A ASTM A307 Grade A Bolts, screws, studs (general engineering) Low or medium carbon steel 1/4 - 4 33000 60000 36000 B69 B100 307B ASTM A307 Grade B Bolts, screws, studs (flanged joints) Low or medium carbon steel 1/4 - 4 33000 60000 36000 B69 B95 Note: Manufacturer’s identification mark also stamped where appropriate www.AallAmericanFasteners.com The above information has been extracted from the FASTENER BLACK BOOK - INCH Edition courtesy of the www.FastenerBlackBook.com INCH Edition METRIC Edition Copyright © 2016 by Publishers of the Fastener Black Book Toll Free: 877-791-4426 Telephone: 856-786-7799 Fax: 856-786-8063 The right parts, at the right price, on time - every time! ISO 9001:2008 Q U A L I T Y Use strictly as per manufacturer’s recommendations * 1 of 2
Transcript of Q U ALITY ISO - AALL AMERICAN Fasteners Bolt Stud Grade Markings and Strength Chart Author Subject...
GRADE IDENTIFICATION MARKINGS - INCH STEEL BOLTS
Grade Marking Specification / Description Material
Nominal Size
inches
ProofLoad psi
Tensile Strength min psi
Yield Strength min psi
Rockwell Hardness
min max
SAE J429 - Grade 1 Bolts, screws, studs Low or medium carbon steel 1/4 - 1 1/2 33000 60000 36000 B70 B100
SAE J429 - Grade 2 Bolts, screws,studs Low or medium carbon steel 1/4 - 3/4
>3/4 -1 1/255000 33000
74000 60000
5700036000
B80 B70
B100 B100
SAE J429 - Grade 4 Studs Medium carbon cold drawn steel 1/4 - 1 1/2 65000 115000 100000 C22 C32
SAE J429 - Grade 5 Bolts, screws, studs
Medium carbon steel or carbon steel with additives, quenched & tempered
1/4 - 1 >1 - 1 1/2
85000 74000
120000 105000
92000 81000
C25 C19
C34C30
SAE J429 - Grade 5.1 Sems Low or medium carbon steel, quenched & tempered No. 4 - 5/8 85000 120000 92000 C25 C40
SAE J429 - Grade 5.2 Bolts, screws,studs
Low carbon Boron steel, quenched & tempered 1/4 - 1 85000 120000 92000 C26 C36
SAE J429 - Grade 8 Bolts & screws Medium carbon / alloy steel with additives, quenched & tempered 1/4 - 1 1/2 120000 150000 130000 C33 C39
SAE J429 - Grade 8.1 Studs Medium carbon alloy or SAE 1541 steel, elevated temperature drawn 1/4 - 1 1/2 120000 150000 130000 C33 C39
SAE J429 - Grade 8.2 Bolts & screws
Low carbon Boron steel, quenched & tempered 1/4 - 1 120000 150000 130000 C33 C39
L.9L.9® (Grade 9) Bolts, nuts, washers *(Proprietory product) High strength alloy steel 1/4 - 1 1/2 145000 180000 155000 C38 C42
307A ASTM A307 Grade A Bolts, screws, studs (general engineering) Low or medium carbon steel 1/4 - 4 33000 60000 36000 B69 B100
307B ASTM A307 Grade B Bolts, screws, studs (flanged joints) Low or medium carbon steel 1/4 - 4 33000 60000 36000 B69 B95
Note: Manufacturer’s identification mark also stamped where appropriate
www.AallAmericanFasteners.com
The above information has been extracted from the FASTENER BLACK BOOK - INCH Edition courtesy of the www.FastenerBlackBook.com
INCH Edition METRIC EditionCopyright © 2016 by Publishers of the Fastener Black Book
Toll Free: 877-791-4426Telephone: 856-786-7799Fax: 856-786-8063
The right parts, at the right price, on time - every time!
ISO9001:2008
QUALITY
Use strictly as per manufacturer’s recommendations*
1 of 2
GRADE IDENTIFICATION MARKINGS - INCH STEEL BOLTS
Grade Marking Specification / Description Material
Nominal Size
inches
ProofLoad psi
Tensile Strength min psi
Yield Strength min psi
Rockwell Hardness
min max
A325ASTM A325 Type 1 High strength structural bolts
Medium carbon steel, quenched & tempered
1/2 - 1 1 1/8 - 1 1/2
85000 74000
120000 105000
9200081000
C24 C19
C35 C31
A325ASTM A325 Type 2 High strength structural bolts
Low carbon Martensitic steel, quenched & tempered
1/2 - 1 1 1/8 - 1 1/2
85000 74000
120000 105000
9200081000
C24 C19
C35 C31
A325 ASTM A325 Type 3 High strength structural bolts
Atmospheric corrosion resistant steel, quenched & tempered
1/2 - 1 1 1/8 - 1 1/2
85000 74000
120000 105000
9200081000
C24C19
C35 C31
BB
ASTM A354 Grade BB Bolts, studs Alloy steel, quenched & tempered 1/4 - 2 1/2 >2 1/2 - 4
80000 75000
105000 100000
8300078000
C26C22
C36 C33
BC
ASTM A354 Grade BC Bolts, studs Alloy steel, quenched & tempered 1/4 - 2 1/2>2 1/2 - 4
105000 95000
125000 115000
10900099000
C26C22
C36 C33
BDASTM A354 Grade BD Bolts, screws, studs Alloy steel, quenched & tempered 1/4 - 2 1/2
>2 1/2 - 4120000 105000
150000 140000
130000120000
C33C31
C39 C39
ASTM A449 Type 1 Bolts, screws, studs
Medium carbon steel, quenched & tempered
1/4 - 1 >1 - 1 1/2
85000 74000
120000 105000
8100058000
C25 C19
C34 C30
ASTM A449 Type 2 Bolts, screws, studs
Low carbon Martensitic steel, quenched & tempered 1/4 - 1 85000 120000 58000 C25 C34
A490ASTM A490 Type 1 High strength structural bolts
Medium carbon alloy steel quenched & tempered 1/2 - 1 1/2 120000 150000 min
170000 max 130000 C33 C38
A490ASTM A490 Type 2 High strength structural bolts
Low carbon Martensitic steel, quenched & tempered 1/2 - 1 120000 150000 min
170000 max 130000 C33 C38
A490 ASTM A490 Type 3 High strength structural bolts
Atmospheric corrosion resistant steel, quenched & tempered 1/2 - 1 1/2 120000 150000 min
170000 max 130000 C33 C38
ASTM A574 Socket Head Cap Screws
Medium carbon alloy steel, quenched & tempered
No. 0 - 1/2 >1/2 - 2
140000 135000
180000 170000
170000 153000
C38 C37
C43 C43
Note: Manufacturer’s identification mark also stamped where appropriate
www.AallAmericanFasteners.com
The above information has been extracted from the FASTENER BLACK BOOK - INCH Edition courtesy of the www.FastenerBlackBook.com
INCH Edition METRIC EditionCopyright © 2016 by Publishers of the Fastener Black Book
Toll Free: 877-791-4426Telephone: 856-786-7799Fax: 856-786-8063
The right parts, at the right price, on time - every time!
ISO9001:2008
QUALITY
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