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): 3-1/2"
- 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
Standards and Specifications IFI-111, ASME B18.2.1 and SAE J429
Category Flange Bolts
Origin Origin Undefined
Thread Direction Right-Hand Thread
Thread Pitch 20
Material Grade Grade 8
POS BO027-1420X312-000400
Across Flats (Basic) 3/8"
Diameter (Dimension) 0.25"
Across Flats (Minimum) 0.367"
Product Class Externally Threaded Fasteners
System of Measurement Inch
Across Flats (Maximum) 0.375"
Order Machine Thread Fasteners
Drive Style External Hex Drive
Diameter (Nominal) 1/4"
Head Style Hex Indented Flange Head
Brand Aspen Fasteners
Thread Length Part Thread
Material Steel
cad_3d_viewer_url https||//3d.aspenfasteners.com/viewer/?cad_model=obj/BO027-1420X312
Thread Length (Nominal) 0.75"
Coating Phosphate Coated and Oiled
Head Height, Overall 0.28"
Length (Nominal) 3-1/2"
Coating Color Black
Flange Diameter 0.565"
