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): 1/4"
- Thread Pitch: 20
- Diameter (Dimension): 0.25"
- Length (Nominal): 3"
- Thread Length (Nominal): 0.75"
- Across Flats (Basic): 3/8"
- Across Flats (Minimum): 0.367"
- Across Flats (Maximum): 0.375"
- Head Height, Overall: 0.28"
- Flange Diameter: 0.565"
- 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
Diameter (Dimension) 0.25"
Standards and Specifications IFI-111, ASME B18.2.1 and SAE J429
Coating Color Black
cad_3d_viewer_url https||//3d.aspenfasteners.com/viewer/?cad_model=obj/BO027-1420X3
Material Grade Grade 8
Across Flats (Basic) 3/8"
Head Height, Overall 0.28"
System of Measurement Inch
Drive Style External Hex Drive
Thread Length Part Thread
Thread Direction Right-Hand Thread
Thread Pitch 20
Thread Length (Nominal) 0.75"
Length (Nominal) 3"
Order Machine Thread Fasteners
Across Flats (Minimum) 0.367"
Category Flange Bolts
Brand Aspen Fasteners
Origin Origin Undefined
Product Class Externally Threaded Fasteners
Coating Phosphate Coated and Oiled
Diameter (Nominal) 1/4"
Material Steel
Flange Diameter 0.565"
POS BO027-1420X3-000500
Head Style Hex Indented Flange Head
Across Flats (Maximum) 0.375"
