Product 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 (Nominal): 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"
- 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
- Coating: Phosphate Coated and Oiled
- Coating Color: Black
- Origin: Origin Undefined
- Standards and Specifications: IFI-111, ASME B18.2.1 and SAE J429
Product Videos
Custom Field
Product Class Externally Threaded Fasteners
Material Grade Grade 8
Across Flats (Basic) 1/2"
Category Flange Bolts
Head Height, Overall 0.32"
Coating Color Black
Thread Length Part Thread
Thread Pitch 18
Standards and Specifications IFI-111, ASME B18.2.1 and SAE J429
Length (Nominal) 3"
Thread Direction Right-Hand Thread
System of Measurement Inch
cad_3d_viewer_url https||//3d.aspenfasteners.com/viewer/?cad_model=obj/BO027-51618X3
POS BO027-51618X3-000700,BO027-51618X3-000500
Diameter (Nominal) 5/16"
Brand Aspen Fasteners
Coating Phosphate Coated and Oiled
Flange Diameter 0.706"
Across Flats (Minimum) 0.491"
Thread Length (Nominal) 0.875"
Head Style Hex Indented Flange Head
Drive Style External Hex Drive
Order Machine Thread Fasteners
Origin Origin Undefined
Material Steel
Across Flats (Maximum) 0.5"
Diameter (Dimension) 0.3125"
