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): 3/8"
- Thread Pitch: 16
- Diameter (Dimension): 0.375"
- Length (Nominal): 3-1/2"
- Thread Length (Nominal): 1"
- Across Flats (Basic): 9/16"
- Across Flats (Minimum): 0.552"
- Across Flats (Maximum): 0.562"
- Head Height, Overall: 0.39"
- Flange Diameter: 0.81"
- 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
Coating Phosphate Coated and Oiled
Order Machine Thread Fasteners
Diameter (Nominal) 3/8"
Thread Length (Nominal) 1"
Thread Pitch 16
Head Style Hex Indented Flange Head
Origin Origin Undefined
Thread Length Part Thread
Across Flats (Basic) 9/16"
Category Flange Bolts
Across Flats (Maximum) 0.562"
Material Grade Grade 8
Length (Nominal) 3-1/2"
System of Measurement Inch
Diameter (Dimension) 0.375"
Thread Direction Right-Hand Thread
Head Height, Overall 0.39"
cad_3d_viewer_url https||//3d.aspenfasteners.com/viewer/?cad_model=obj/BO027-3816X312
Brand Aspen Fasteners
Across Flats (Minimum) 0.552"
Coating Color Black
POS BO027-3816X312-000300
Drive Style External Hex Drive
Material Steel
Flange Diameter 0.81"
Product Class Externally Threaded Fasteners
