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): 5/16"
- Thread Pitch: 24
- Diameter (Dimension): 0.3125"
- Diameter (Minimum): 0.3065"
- Diameter (Maximum): 0.3125"
- Length (Nominal): 5/8"
- Thread Length (Nominal): 0.625"
- Across Flats (Basic): 1/2"
- Across Flats (Minimum): 0.489"
- Across Flats (Maximum): 0.500"
- Head Height, Overall: 0.2031"
- Head Height, Overall (Minimum): 0.195"
- Head Height, Overall (Maximum): 0.211"
- 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
cad_3d_viewer_url https||//3d.aspenfasteners.com/viewer/?cad_model=obj/BO022-51624X58
Diameter (Minimum) 0.3065"
Pitch UNF Fine Thread
Across Flats (Maximum) 0.500"
Origin Made in U.S.A.
Head Height, Overall (Maximum) 0.211"
System of Measurement Inch
Category Cap Screws
Across Flats (Basic) 1/2"
Diameter (Maximum) 0.3125"
Length (Nominal) 5/8"
Drive Style External Hex Drive
Order Machine Thread Fasteners
Across Flats (Minimum) 0.489"
Product Class Externally Threaded Fasteners
Diameter (Nominal) 5/16"
Brand Aspen Fasteners
cad_3d_file_url https||//3d.aspenfasteners.com/assets/obj/BO022-51624X58.zip
Material Steel
Head Style Detail Washer Face
Thread Pitch 24
Head Height, Overall (Minimum) 0.195"
Head Markings Six radial lines 60 degrees apart and manufacturer ID
Coating Color Yellow
Diameter (Dimension) 0.3125"
Material Grade Grade 8
Point Chamfered Point
Thread Direction Right-Hand Thread
Head Style Hex Head
Thread Length (Nominal) 0.625"
Head Height, Overall 0.2031"
Coating Zinc Plated
POS BO022-51624X58-001800
Standards and Specifications ASME B18.2.1 and SAE J429
