Product Description
- Hex cap screws are manufactured to tighter tolerances as compared to hex bolts.
- The heads of grade 8 steel fasteners are typically marked with 6 raised radial lines.
- The washer face under the head provides a precision bearing surface.
- Grade 8 steel fasteners have a minimum tensile strength of 150,000 pounds per square inch.
- The chamfered point improves engagement with a nut or pre-tapped hole.
- Diameter (Nominal): 1/4"
- Thread Pitch: 20
- Diameter (Dimension): 0.25"
- Diameter (Minimum): 0.245"
- Diameter (Maximum): 0.250"
- Length (Nominal): 1-3/4"
- Thread Length (Nominal): 0.75"
- Across Flats (Basic): 7/16"
- Across Flats (Minimum): 0.428"
- Across Flats (Maximum): 0.438"
- Head Height, Overall: 0.1563"
- Head Height, Overall (Minimum): 0.150"
- Head Height, Overall (Maximum): 0.163"
- Category: Cap Screws
- System of Measurement: Inch
- Brand: Aspen Fasteners
- Head Style: Hex Head
- Head Style Detail: Washer Face
- Head Markings: Six radial lines 60 degrees apart and manufacturer ID
- Drive Style: External Hex Drive
- Pitch: UNC Coarse Thread
- Thread Direction: Right-Hand Thread
- Point: Chamfered Point
- Material: Steel
- Material Grade: Grade 8
- Coating: Zinc Plated
- Coating Color: Yellow
- Origin: Made in U.S.A.
- Standards and Specifications: ASME B18.2.1 and SAE J429
Product Videos
Custom Field
Head Style Detail Washer Face
Coating Zinc Plated
System of Measurement Inch
Across Flats (Maximum) 0.438"
Product Class Externally Threaded Fasteners
Diameter (Minimum) 0.245"
Head Markings Six radial lines 60 degrees apart and manufacturer ID
Head Height, Overall 0.1563"
Diameter (Maximum) 0.250"
cad_3d_viewer_url https||//3d.aspenfasteners.com/viewer/?cad_model=obj/BO020-1420X134
Origin Made in U.S.A.
cad_3d_file_url https||//3d.aspenfasteners.com/assets/obj/BO020-1420X134.zip
Material Steel
Head Height, Overall (Maximum) 0.163"
POS BO020-1420X134-001400
Across Flats (Minimum) 0.428"
Diameter (Nominal) 1/4"
Thread Length (Nominal) 0.75"
Thread Direction Right-Hand Thread
Standards and Specifications ASME B18.2.1 and SAE J429
Point Chamfered Point
Coating Color Yellow
Drive Style External Hex Drive
Length (Nominal) 1-3/4"
Across Flats (Basic) 7/16"
Head Style Hex Head
Pitch UNC Coarse Thread
Diameter (Dimension) 0.25"
Category Cap Screws
Head Height, Overall (Minimum) 0.150"
Thread Pitch 20
Brand Aspen Fasteners
Material Grade Grade 8
Order Machine Thread Fasteners
