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): 1/2"
- Thread Length (Nominal): 0.5"
- 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
System of Measurement Inch
Across Flats (Basic) 1/2"
Material Steel
Diameter (Nominal) 5/16"
Across Flats (Minimum) 0.491"
Diameter (Dimension) 0.3125"
Material Grade Grade 8
Head Height, Overall 0.32"
Length (Nominal) 1/2"
Across Flats (Maximum) 0.5"
Drive Style External Hex Drive
Thread Pitch 18
Flange Diameter 0.706"
Order Machine Thread Fasteners
Origin Origin Undefined
Head Style Hex Indented Flange Head
Product Class Externally Threaded Fasteners
cad_3d_viewer_url https||//3d.aspenfasteners.com/viewer/?cad_model=obj/BO027-51618X12
Standards and Specifications IFI-111, ASME B18.2.1 and SAE J429
Thread Direction Right-Hand Thread
POS BO027-51618X12-001500
Brand Aspen Fasteners
Coating Phosphate Coated and Oiled
Category Flange Bolts
Thread Length (Nominal) 0.5"
Thread Length Part Thread
Coating Color Black
