Product Description
- Also known as hex flange bolts, frame bolts or hex washer bolts.
- Flange under the head acts like a washer to increase the bearing surface and distribute the load.
- Serrated teeth under the head bite into the mating surface as tightened to prevent loosening.
- The heads of grade 5 steel fasteners are typically marked with 3 raised radial lines.
- Grade 5 steel fasteners have a minimum tensile strength of 105,000 pounds per square inch.
- Diameter (Nominal): 1/4"
- Thread Pitch: 20
- Diameter (Dimension): 0.25"
- Length (Nominal): 3/8"
- Thread Length (Nominal): 0.375"
- 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 Screws
- System of Measurement: Inch
- Brand: Aspen Fasteners
- Head Style: Hex Flange Head
- Head Style Detail: Locking Serrations
- Drive Style: External Hex Drive
- Thread Length: Full Thread
- Thread Direction: Right-Hand Thread
- Material: Steel
- Material Grade: Grade 5
- Material Processes: Quenched and Tempered
- Coating: Zinc Plated
- Coating Color: Clear
- Hardness Rating: Rockwell C25-C34
- Origin: Origin Undefined
Product Videos
Custom Field
Diameter (Dimension) 0.25"
Head Style Detail Locking Serrations
Coating Zinc Plated
Origin Origin Undefined
Thread Length Full Thread
Length (Nominal) 3/8"
Drive Style External Hex Drive
Category Flange Screws
Head Style Hex Flange Head
Material Grade Grade 5
Across Flats (Basic) 3/8"
System of Measurement Inch
Diameter (Nominal) 1/4"
Hardness Rating Rockwell C25-C34
Thread Direction Right-Hand Thread
Order Machine Thread Fasteners
POS BO028-1420X38-003000
Flange Diameter 0.565"
Thread Pitch 20
Material Steel
cad_3d_viewer_url https||//3d.aspenfasteners.com/viewer/?cad_model=obj/BO028-1420X38
Coating Color Clear
Product Class Externally Threaded Fasteners
Material Processes Quenched and Tempered
Across Flats (Minimum) 0.367"
Head Height, Overall 0.28"
Across Flats (Maximum) 0.375"
Thread Length (Nominal) 0.375"
Brand Aspen Fasteners
