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): 1/2"
- Thread Length (Nominal): 0.5"
- 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
Flange Diameter 0.565"
Thread Pitch 20
Diameter (Nominal) 1/4"
cad_3d_viewer_url https||//3d.aspenfasteners.com/viewer/?cad_model=obj/BO028-1420X12
Order Machine Thread Fasteners
Thread Length (Nominal) 0.5"
Material Grade Grade 5
Category Flange Screws
Across Flats (Minimum) 0.367"
Across Flats (Maximum) 0.375"
Thread Direction Right-Hand Thread
System of Measurement Inch
Brand Aspen Fasteners
Origin Origin Undefined
Product Class Externally Threaded Fasteners
Diameter (Dimension) 0.25"
Head Style Detail Locking Serrations
Hardness Rating Rockwell C25-C34
Length (Nominal) 1/2"
Drive Style External Hex Drive
Head Style Hex Flange Head
Material Steel
Material Processes Quenched and Tempered
Across Flats (Basic) 3/8"
Coating Color Clear
POS BO028-1420X12-003000
Head Height, Overall 0.28"
Thread Length Full Thread
Coating Zinc Plated
