Product Description
- Hex cap screws are manufactured to tighter tolerances as compared to hex bolts.
- The heads of grade 5 steel fasteners are typically marked with 3 raised radial lines.
- The washer face under the head provides a precision bearing surface.
- Grade 5 steel fasteners have a minimum tensile strength of 105,000 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): 5/8"
- Thread Length (Nominal): 0.625"
- 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: Three radial lines 120 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 5
- Coating: Zinc Plated
- Coating Color: Clear
- Origin: Made in U.S.A.
- Standards and Specifications: ASME B18.2.1 and SAE J429
Product Videos
Custom Field
Coating Color Clear
Diameter (Nominal) 1/4"
Order Machine Thread Fasteners
cad_3d_viewer_url https||//3d.aspenfasteners.com/viewer/?cad_model=obj/BO016-1420X58
POS BO016-1420X58-003000
Pitch UNC Coarse Thread
Thread Direction Right-Hand Thread
Across Flats (Minimum) 0.428"
Thread Pitch 20
Thread Length (Nominal) 0.625"
Diameter (Minimum) 0.245"
Across Flats (Basic) 7/16"
Material Grade Grade 5
Category Cap Screws
Length (Nominal) 5/8"
Head Style Hex Head
Diameter (Dimension) 0.25"
Standards and Specifications ASME B18.2.1 and SAE J429
Coating Zinc Plated
Head Height, Overall 0.1563"
Point Chamfered Point
Drive Style External Hex Drive
Product Class Externally Threaded Fasteners
Head Markings Three radial lines 120 degrees apart and manufacturer ID
Head Height, Overall (Minimum) 0.150"
Material Steel
Diameter (Maximum) 0.250"
Across Flats (Maximum) 0.438"
Head Style Detail Washer Face
Origin Made in U.S.A.
Brand Aspen Fasteners
Head Height, Overall (Maximum) 0.163"
System of Measurement Inch
cad_3d_file_url https||//3d.aspenfasteners.com/assets/obj/BO016-1420X58.zip
