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): 1"
- Thread Length (Nominal): 1"
- 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
Material Steel
Across Flats (Minimum) 0.922"
Thread Pitch 18
Standards and Specifications ASME B18.2.1 and SAE J429
Thread Direction Right-Hand Thread
Diameter (Maximum) 0.625"
Length (Nominal) 1"
Coating Color Yellow
Coating Zinc Plated
Category Cap Screws
Pitch UNF Fine Thread
System of Measurement Inch
Head Markings Six radial lines 60 degrees apart and manufacturer ID
Head Height, Overall 25/64"
Diameter (Nominal) 5/8"
Order Machine Thread Fasteners
Head Style Detail Washer Face
Origin Made in U.S.A.
Head Style Hex Head
Head Height, Overall (Maximum) 0.403"
Diameter (Dimension) 0.625"
Product Class Externally Threaded Fasteners
cad_3d_viewer_url https||//3d.aspenfasteners.com/viewer/?cad_model=obj/BO022-5818X1
Across Flats (Maximum) 0.938"
Point Chamfered Point
Head Height, Overall (Minimum) 0.378"
Across Flats (Basic) 15/16"
Thread Length (Nominal) 1"
cad_3d_file_url https||//3d.aspenfasteners.com/assets/obj/BO022-5818X1.zip
Brand Aspen Fasteners
Diameter (Minimum) 0.617"
Material Grade Grade 8
Drive Style External Hex Drive
POS BO022-5818X1-000250
