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): 1-1/2"
- 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
Standards and Specifications IFI-111, ASME B18.2.1 and SAE J429
System of Measurement Inch
Diameter (Nominal) 5/16"
Origin Origin Undefined
Flange Diameter 0.706"
Across Flats (Minimum) 0.491"
Thread Length (Nominal) 0.875"
Across Flats (Maximum) 0.5"
Coating Phosphate Coated and Oiled
Material Grade Grade 8
Head Style Hex Indented Flange Head
Drive Style External Hex Drive
Across Flats (Basic) 1/2"
Material Steel
Diameter (Dimension) 0.3125"
Head Height, Overall 0.32"
Thread Length Part Thread
Order Machine Thread Fasteners
Category Flange Bolts
Coating Color Black
cad_3d_viewer_url https||//3d.aspenfasteners.com/viewer/?cad_model=obj/BO027-51618X112
Product Class Externally Threaded Fasteners
Length (Nominal) 1-1/2"
Thread Direction Right-Hand Thread
Brand Aspen Fasteners
POS BO027-51618X112-001000
Thread Pitch 18
