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): 5/8"
- Thread Length (Nominal): 0.625"
- 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
Across Flats (Minimum) 0.491"
Thread Direction Right-Hand Thread
Category Flange Bolts
Product Class Externally Threaded Fasteners
Head Style Hex Indented Flange Head
Coating Phosphate Coated and Oiled
System of Measurement Inch
Material Steel
Brand Aspen Fasteners
Material Grade Grade 8
Thread Pitch 18
Length (Nominal) 5/8"
Head Height, Overall 0.32"
Diameter (Nominal) 5/16"
cad_3d_viewer_url https||//3d.aspenfasteners.com/viewer/?cad_model=obj/BO027-51618X58
Flange Diameter 0.706"
Drive Style External Hex Drive
Coating Color Black
Order Machine Thread Fasteners
POS BO027-51618X58-001500
Origin Origin Undefined
Thread Length Part Thread
Thread Length (Nominal) 0.625"
Across Flats (Maximum) 0.5"
Standards and Specifications IFI-111, ASME B18.2.1 and SAE J429
Across Flats (Basic) 1/2"
Diameter (Dimension) 0.3125"
