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): 3-3/4"
- Thread Length (Nominal): 0.875"
- 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
Order Machine Thread Fasteners
Thread Direction Right-Hand Thread
Diameter (Nominal) 5/16"
Head Style Hex Head
Origin Made in U.S.A.
Coating Color Yellow
Brand Aspen Fasteners
Thread Pitch 24
Across Flats (Maximum) 0.500"
Head Markings Six radial lines 60 degrees apart and manufacturer ID
Diameter (Maximum) 0.3125"
Head Style Detail Washer Face
Product Class Externally Threaded Fasteners
Length (Nominal) 3-3/4"
cad_3d_file_url https||//3d.aspenfasteners.com/assets/obj/BO022-51624X334.zip
Point Chamfered Point
Head Height, Overall (Minimum) 0.195"
POS BO022-51624X334-000400
Thread Length (Nominal) 0.875"
Across Flats (Minimum) 0.489"
Standards and Specifications ASME B18.2.1 and SAE J429
Head Height, Overall 0.2031"
cad_3d_viewer_url https||//3d.aspenfasteners.com/viewer/?cad_model=obj/BO022-51624X334
Head Height, Overall (Maximum) 0.211"
Material Grade Grade 8
System of Measurement Inch
Coating Zinc Plated
Drive Style External Hex Drive
Diameter (Dimension) 0.3125"
Diameter (Minimum) 0.3065"
Across Flats (Basic) 1/2"
Category Cap Screws
Material Steel
Pitch UNF Fine Thread
