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Industrial Supplies >> Gallery Guide of Anchor Fastener Type  
   
Gallery of Grade Markings for Steel Bolts and Screws  

 
Screws Drives Bolt Styles
Head Styles Sem Screws Socket & Set Screws
Nuts, Washers, Thumb Screws & Wing Screws Pins, Rivets & Studs Welding Fasteners
Grade Markings for Steel Bolts and Screws Standard Tapping Screw  


Physical Properties

Specifications

Material

Bolt and Screw Size (in.)

Proof Load
(psi)

Tensile Strength Min. (psi)

SAE - Grade 0 Steel Up to
1-1/2"
- -
SAE - Grade 1 Low Carbon Steel Up to
1-1/2"
- 55,000
ASTM - A 307 Low Carbon Steel All Sizes - 55,000
SAE - Grade 2 Low Carbon Steel Up to
1-1/2"
55,000 69,000
    Over 1/2" to 3/4" 52,000 64,000
    Over 3/4" to
1-1/2"
28,000 55,000


Physical Properties
Specifications Material Bolt and Screw Size (in.) Proof Load
(psi)
Tensile Strength Min. (psi)
SAE - Grade 3 Medium Carbon Steel, Cold Worked Up to 1/2" 85,000 110,000
    Over 3/4" to 5/8"    


Physical Properties
Specifications Material Bolt and Screw Size (in.) Proof Load
(psi)
Tensile Strength Min. (psi)
SAE - Grade 5 Medium Carbon Steel, Quenched & Tempered Up to 3/4" 85,000 110,000
    Over 3/4" to 1" 78,000 115,000
    Over 1"
to 1-1/2"
74,000 105,000
    Up to 3/4" 85,000 120,000
    Over 1"
to 1-1/2"
74,000 105,000
    Over 1" to 3" 55,000 90,000


Physical Properties
Specifications Material Bolt and Screw Size (in.) Proof Load
(psi)
Tensile Strength Min. (psi)
ASTM - A 325 Medium Carbon Steel, Quenched & Tempered 1/2",5/8",3/4" 85,000 120,000
    7/8",1" 78,000 115,000
    1-1/8"
to 1-1/2"
74,000 105,000

Physical Properties
Specifications Material Bolt and Screw Size (in.) Proof Load
(psi)
Tensile Strength Min. (psi)
SAE - Grade 5.1 Low or Medium Carbon Steel, Quenched & Tempered Screw with Assembled Lock Washer Up to 3/8" incl. 85,000 120,000



Physical Properties

Specifications Material Bolt and Screw Size (in.) Proof Lead
(psi)
Tensile Strength Min. (psi)
ASTM - A 354 Grade BB Low Alloy Steel, Steel, Quenched and Tempered Up to 2-1/2" 80,000 105,000
   

Over 2-1/2"
to 4"

   



Physical Properties
Specifications Material Bolt and Screw Size (in.) Proof Lead
(psi)
Tensile Strength Min. (psi)
ASTM - A 354 Grade BC Low Alloy Steel, Steel, Quenched and Tempered Up to 2-1/2" 105,000 125,000
    Over 2-1/2"
to 4"
95,000 115,000



Physical Properties
Specifications Material Bolt and Screw Size (in.) Proof Lead
(psi)
Tensile Strength Min. (psi)
SAE-Grade 7 Medium Carbon Alloy Steel , Quenched & Tempered, Roll Threaded after heat treatment Up to 1/2" 105,000 133,000



Physical Properties
Specifications Material Bolt and Screw Size (in.) Proof Lead
(psi)
Tensile Strength Min. (psi)
SAE - Grade 8 Medium Carbon Alloy Steel, Quenched & Tempered Up to 1/2" 120,000 150,000



Physical Properties
Specifications Material Bolt and Screw Size (in.) Proof Lead
(psi)
Tensile Strength Min. (psi)
ASTM A 490 High Strength Structural Bolts, Alloy Steel 1/2" to 2-1/2" 120,000 150,000
    Over 2-1/2"
to 4"
105,000 140,000


From: Hudson Fasteners, Inc.
Detailed information and images of products, please visit the site http://www.hudsonfasteners.com
Edit by Jason