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): 7/16"
- Thread Pitch: 20
- Diameter (Dimension): 0.4375"
- Diameter (Minimum): 0.4305"
- Diameter (Maximum): 0.4375"
- Length (Nominal): 7/8"
- Thread Length (Nominal): 0.875"
- Across Flats (Basic): 5/8"
- Across Flats (Minimum): 0.612"
- Across Flats (Maximum): 0.625"
- Head Height, Overall: 0.2813"
- Head Height, Overall (Minimum): 0.272"
- Head Height, Overall (Maximum): 0.291"
- 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
Pitch UNF Fine Thread
Material Steel
Thread Length (Nominal) 0.875"
Standards and Specifications ASME B18.2.1 and SAE J429
Head Style Detail Washer Face
Thread Pitch 20
Length (Nominal) 7/8"
Brand Aspen Fasteners
Head Height, Overall (Minimum) 0.272"
Coating Zinc Plated
Head Style Hex Head
Head Height, Overall (Maximum) 0.291"
Diameter (Minimum) 0.4305"
cad_3d_viewer_url https||//3d.aspenfasteners.com/viewer/?cad_model=obj/BO022-71620X78
Drive Style External Hex Drive
Across Flats (Maximum) 0.625"
Order Machine Thread Fasteners
cad_3d_file_url https||//3d.aspenfasteners.com/assets/obj/BO022-71620X78.zip
Across Flats (Minimum) 0.612"
Product Class Externally Threaded Fasteners
Category Cap Screws
Coating Color Yellow
Origin Made in U.S.A.
Thread Direction Right-Hand Thread
Head Height, Overall 0.2813"
Head Markings Six radial lines 60 degrees apart and manufacturer ID
POS BO022-71620X78-000700
Across Flats (Basic) 5/8"
Diameter (Dimension) 0.4375"
System of Measurement Inch
Diameter (Nominal) 7/16"
Point Chamfered Point
Diameter (Maximum) 0.4375"
Material Grade Grade 8
