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.
- Diameter (Nominal): 7/8"
- Thread Pitch: 9
- Diameter (Dimension): 0.875"
- Diameter (Minimum): 0.866"
- Diameter (Maximum): 0.875"
- Length (Nominal): 3-1/4"
- Thread Length (Nominal): 2"
- Across Flats (Basic): 1-5/16"
- Across Flats (Minimum): 1.285"
- Across Flats (Maximum): 1.312"
- Head Height, Overall: 35/64"
- Head Height, Overall (Minimum): 0.531"
- Head Height, Overall (Maximum): 0.563"
- 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: UNC Coarse 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
Coating Zinc Plated
Thread Direction Right-Hand Thread
Across Flats (Minimum) 1.285"
Thread Length (Nominal) 2"
cad_3d_file_url https||//3d.aspenfasteners.com/assets/obj/BO020-789X314.zip
Origin Made in U.S.A.
Diameter (Dimension) 0.875"
Across Flats (Maximum) 1.312"
Head Height, Overall (Minimum) 0.531"
Length (Nominal) 3-1/4"
Order Machine Thread Fasteners
Thread Pitch 9
Head Style Detail Washer Face
Material Grade Grade 8
cad_3d_viewer_url https||//3d.aspenfasteners.com/viewer/?cad_model=obj/BO020-789X314
POS BO020-789X314-000050
Category Cap Screws
Pitch UNC Coarse Thread
Drive Style External Hex Drive
Head Height, Overall 35/64"
Across Flats (Basic) 1-5/16"
Head Markings Six radial lines 60 degrees apart and manufacturer ID
Coating Color Yellow
Diameter (Maximum) 0.875"
Head Style Hex Head
Point Chamfered Point
Diameter (Nominal) 7/8"
Brand Aspen Fasteners
Head Height, Overall (Maximum) 0.563"
Product Class Externally Threaded Fasteners
Material Steel
Diameter (Minimum) 0.866"
System of Measurement Inch
Standards and Specifications ASME B18.2.1 and SAE J429
