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): 5/16"
- Thread Pitch: 18
- Diameter (Dimension): 0.3125"
- Length (Nominal): 1"
- Thread Length (Nominal): 1"
- Across Flats (Basic): 1/2"
- Across Flats (Minimum): 0.491"
- Across Flats (Maximum): 0.5"
- Head Height, Overall: 0.32"
- Flange Diameter: 0.706"
- 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
Head Style Hex Flange Head
Across Flats (Minimum) 0.491"
POS BO044-51618X1-001200,BO044-51618X1-001000
Thread Pitch 18
Order Machine Thread Fasteners
Material Processes Case Hardened
Coating Color Clear
Hardness Rating Rockwell C40 / Core C26-C34
Material Steel
Length (Nominal) 1"
Product Class Externally Threaded Fasteners
Across Flats (Maximum) 0.5"
Flange Diameter 0.706"
Across Flats (Basic) 1/2"
Brand Aspen Fasteners
cad_3d_viewer_url https||//3d.aspenfasteners.com/viewer/?cad_model=obj/BO044-51618X1
Diameter (Dimension) 0.3125"
System of Measurement Inch
Thread Length Full Thread
Head Height, Overall 0.32"
Thread Direction Right-Hand Thread
Coating Zinc Plated
Category Flange Screws
Diameter (Nominal) 5/16"
Thread Length (Nominal) 1"
Head Style Detail Locking Serrations
Drive Style External Hex Drive
Origin Origin Undefined
