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.
- 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 Processes: Case Hardened
- Coating: Zinc Plated
- Coating Color: Clear
- Hardness Rating: Rockwell C40 / Core C26-C34
- Origin: Origin Undefined
Product Videos
Custom Field
Thread Length (Nominal) 0.375"
Thread Pitch 20
Coating Color Clear
Order Machine Thread Fasteners
Brand Aspen Fasteners
Drive Style External Hex Drive
Hardness Rating Rockwell C40 / Core C26-C34
Thread Direction Right-Hand Thread
Material Processes Case Hardened
Diameter (Dimension) 0.25"
Head Style Detail Locking Serrations
Diameter (Nominal) 1/4"
Across Flats (Maximum) 0.375"
Coating Zinc Plated
Head Style Hex Flange Head
System of Measurement Inch
cad_3d_viewer_url https||//3d.aspenfasteners.com/viewer/?cad_model=obj/BO044-1420X38
Length (Nominal) 3/8"
Origin Origin Undefined
Across Flats (Minimum) 0.367"
Category Flange Screws
Flange Diameter 0.565"
Product Class Externally Threaded Fasteners
Material Steel
POS BO044-1420X38-003000
Head Height, Overall 0.28"
Thread Length Full Thread
Across Flats (Basic) 3/8"
