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.
- In general, fine thread fasteners are about 10% stronger than coarse threads under static loading.
- Diameter (Nominal): 5/8"
- Thread Pitch: 18
- Diameter (Dimension): 0.625"
- Diameter (Minimum): 0.617"
- Diameter (Maximum): 0.625"
- Length (Nominal): 7-1/2"
- 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: UNF Fine 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
Across Flats (Minimum) 0.922"
Product Class Externally Threaded Fasteners
Head Height, Overall (Maximum) 0.403"
Across Flats (Maximum) 0.938"
cad_3d_file_url https||//3d.aspenfasteners.com/assets/obj/BO022-5818X712.zip
Category Cap Screws
Coating Zinc Plated
Thread Pitch 18
Head Markings Six radial lines 60 degrees apart and manufacturer ID
Diameter (Minimum) 0.617"
cad_3d_viewer_url https||//3d.aspenfasteners.com/viewer/?cad_model=obj/BO022-5818X712
Across Flats (Basic) 15/16"
POS BO022-5818X712-000055
Pitch UNF Fine Thread
Thread Length (Nominal) 1.75"
Thread Direction Right-Hand Thread
Drive Style External Hex Drive
Head Style Hex Head
Head Height, Overall 25/64"
Material Steel
Brand Aspen Fasteners
Diameter (Dimension) 0.625"
Standards and Specifications ASME B18.2.1 and SAE J429
Diameter (Nominal) 5/8"
Order Machine Thread Fasteners
Point Chamfered Point
Material Grade Grade 8
Head Height, Overall (Minimum) 0.378"
Origin Made in U.S.A.
Diameter (Maximum) 0.625"
Head Style Detail Washer Face
Coating Color Yellow
System of Measurement Inch
Length (Nominal) 7-1/2"
