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): 5/8"
- Thread Pitch: 11
- Diameter (Dimension): 0.625"
- Diameter (Minimum): 0.617"
- Diameter (Maximum): 0.625"
- Length (Nominal): 8-1/2"
- Thread Length (Nominal): 1.75"
- Across Flats (Basic): 15/16"
- Across Flats (Minimum): 0.922"
- Across Flats (Maximum): 0.938"
- Head Height, Overall: 25/64"
- Head Height, Overall (Minimum): 0.378"
- Head Height, Overall (Maximum): 0.403"
- 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 Height, Overall 25/64"
Head Height, Overall (Minimum) 0.378"
Diameter (Minimum) 0.617"
Across Flats (Minimum) 0.922"
Coating Zinc Plated
Diameter (Nominal) 5/8"
Across Flats (Basic) 15/16"
Material Grade Grade 8
Diameter (Dimension) 0.625"
Material Steel
Coating Color Yellow
Origin Made in U.S.A.
Product Class Externally Threaded Fasteners
Head Markings Six radial lines 60 degrees apart and manufacturer ID
Thread Pitch 11
POS BO020-5811X812-000050
Head Style Detail Washer Face
System of Measurement Inch
Pitch UNC Coarse Thread
Head Style Hex Head
Across Flats (Maximum) 0.938"
Length (Nominal) 8-1/2"
Thread Direction Right-Hand Thread
Standards and Specifications ASME B18.2.1 and SAE J429
Head Height, Overall (Maximum) 0.403"
Point Chamfered Point
Category Cap Screws
Order Machine Thread Fasteners
Thread Length (Nominal) 1.75"
cad_3d_viewer_url https||//3d.aspenfasteners.com/viewer/?cad_model=obj/BO020-5811X812
Drive Style External Hex Drive
Diameter (Maximum) 0.625"
Brand Aspen Fasteners