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): 5/8"
- Thread Length (Nominal): 0.625"
- 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
Drive Style External Hex Drive
Flange Diameter 0.565"
Diameter (Dimension) 0.25"
Origin Origin Undefined
Order Machine Thread Fasteners
Coating Color Clear
Thread Pitch 20
Head Style Hex Flange Head
Across Flats (Maximum) 0.375"
Thread Length (Nominal) 0.625"
System of Measurement Inch
Thread Length Full Thread
Material Steel
Product Class Externally Threaded Fasteners
Diameter (Nominal) 1/4"
Length (Nominal) 5/8"
Material Processes Quenched and Tempered
POS BO028-1420X58-002500
Material Grade Grade 5
cad_3d_viewer_url https||//3d.aspenfasteners.com/viewer/?cad_model=obj/BO028-1420X58
Brand Aspen Fasteners
Coating Zinc Plated
Hardness Rating Rockwell C25-C34
Across Flats (Minimum) 0.367"
Across Flats (Basic) 3/8"
Head Style Detail Locking Serrations
Head Height, Overall 0.28"
Thread Direction Right-Hand Thread
Category Flange Screws
