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): 3-1/4"
- Thread Length (Nominal): 1.5"
- 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
Standards and Specifications ASME B18.2.1 and SAE J429
Material Grade Grade 8
Head Markings Six radial lines 60 degrees apart and manufacturer ID
Pitch UNF Fine Thread
Across Flats (Maximum) 0.938"
Diameter (Dimension) 0.625"
Coating Zinc Plated
Point Chamfered Point
Thread Length (Nominal) 1.5"
Thread Pitch 18
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Thread Direction Right-Hand Thread
Head Height, Overall (Maximum) 0.403"
Product Class Externally Threaded Fasteners
Diameter (Nominal) 5/8"
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System of Measurement Inch
Across Flats (Minimum) 0.922"
Head Height, Overall (Minimum) 0.378"
Across Flats (Basic) 15/16"
Origin Made in U.S.A.
Order Machine Thread Fasteners
Diameter (Minimum) 0.617"
Diameter (Maximum) 0.625"
Material Steel
Category Cap Screws
Length (Nominal) 3-1/4"
Drive Style External Hex Drive
Head Style Hex Head
Head Height, Overall 25/64"
Head Style Detail Washer Face
POS BO022-5818X314-000100
Brand Aspen Fasteners
Coating Color Yellow
