5/16"-18 X 3" Flange Bolts, Grade 8 Steel, Black Phosphate and Oil

PART NUMBER:
BO027-51618X3
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  • Sometimes called Frame Bolts as these bolts are commonly used on truck frames.
  • Also known as hex flange screws or hex washer bolts.
  • Flange under the head acts like a washer to increase the bearing surface and distribute the load.
  • The heads of grade 8 steel fasteners are typically marked with 6 raised radial lines.
  • Grade 8 steel fasteners have a minimum tensile strength of 150,000 pounds per square inch.
  • Diameter (Nominal): 5/16"
  • Thread Pitch: 18
  • Diameter (Dimension): 0.3125"
  • Length (Nominal): 3"
  • Thread Length: 0.875"
  • Across Flats (Basic): 1/2"
  • Across Flats (Minimum): 0.491"
  • Across Flats (Maximum): 0.5"
  • Head Height, Overall: 0.32"
  • Flange Diameter: 0.706"
  • Product Class: Externally Threaded Fasteners
  • Order: Machine Thread Fasteners
  • Category: Flange Bolts
  • System of Measurement: Inch
  • Brand: Aspen Fasteners®
  • Head Style: Hex Indented Flange Head
  • Drive Style: External Hex Drive
  • Thread Length: Part Thread
  • Thread Direction: Right-Hand Thread
  • Material: Steel
  • Material Grade: Grade 8 Steel
  • Coating: Phosphate Coated and Oiled
  • Coating Color: Black
  • Standards and Specifications: IFI-111, ASME B18.2.1 and SAE J429
Shop by System of Measurement:
Inch
Flange Diameter:
0.706"
Head Height, Overall:
0.32"
Across Flats (Maximum):
0.5"
Across Flats (Minimum):
0.491"
Across Flats (Basic):
1/2"
Thread Length:
0.875"
Length (Nominal):
3"
Thread Pitch:
18
Diameter (Nominal):
5/16"
Standards and Specifications:
IFI-111, ASME B18.2.1 and SAE J429
Coating Color:
Black
Coating:
Phosphate Coated and Oiled
Material Grade:
Grade 8 Steel
Material:
Steel
Thread Direction:
Right-Hand Thread
Thread Length:
Part Thread
Drive Style:
External Hex Drive
Head Style:
Hex Indented Flange Head
Brand:
Aspen Fasteners
System of Measurement:
Inch
Category:
Flange Bolts
Order:
Machine Thread Fasteners
Product Class:
Externally Threaded Fasteners
Shop by Material:
Steel
Diameter (Dimension):
0.3125"
POS:
BO027-51618X3-000700,BO027-51618X3-000500
  • Description
    • Sometimes called Frame Bolts as these bolts are commonly used on truck frames.
    • Also known as hex flange screws or hex washer bolts.
    • Flange under the head acts like a washer to increase the bearing surface and distribute the load.
    • The heads of grade 8 steel fasteners are typically marked with 6 raised radial lines.
    • Grade 8 steel fasteners have a minimum tensile strength of 150,000 pounds per square inch.
    • Diameter (Nominal): 5/16"
    • Thread Pitch: 18
    • Diameter (Dimension): 0.3125"
    • Length (Nominal): 3"
    • Thread Length: 0.875"
    • Across Flats (Basic): 1/2"
    • Across Flats (Minimum): 0.491"
    • Across Flats (Maximum): 0.5"
    • Head Height, Overall: 0.32"
    • Flange Diameter: 0.706"
    • Product Class: Externally Threaded Fasteners
    • Order: Machine Thread Fasteners
    • Category: Flange Bolts
    • System of Measurement: Inch
    • Brand: Aspen Fasteners®
    • Head Style: Hex Indented Flange Head
    • Drive Style: External Hex Drive
    • Thread Length: Part Thread
    • Thread Direction: Right-Hand Thread
    • Material: Steel
    • Material Grade: Grade 8 Steel
    • Coating: Phosphate Coated and Oiled
    • Coating Color: Black
    • Standards and Specifications: IFI-111, ASME B18.2.1 and SAE J429

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