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): 1-1/8"
- Thread Pitch: 7
- Diameter (Dimension): 1.125"
- Diameter (Minimum): 1.114"
- Diameter (Maximum): 1.125"
- Length (Nominal): 3-3/4"
- Thread Length (Nominal): 2.5"
- Across Flats (Basic): 1-11/16"
- Across Flats (Minimum): 1.631"
- Across Flats (Maximum): 1.688"
- Head Height, Overall: 11/16"
- Head Height, Overall (Minimum): 0.658"
- Head Height, Overall (Maximum): 0.718"
- 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
Head Height, Overall (Minimum) 0.658"
Diameter (Nominal) 1-1/8"
Head Height, Overall (Maximum) 0.718"
Material Grade Grade 8
Brand Aspen Fasteners
Head Markings Six radial lines 60 degrees apart and manufacturer ID
Thread Pitch 7
Head Style Hex Head
Thread Direction Right-Hand Thread
System of Measurement Inch
cad_3d_viewer_url https||//3d.aspenfasteners.com/viewer/?cad_model=obj/BO020-1187X334
Origin Made in U.S.A.
Product Class Externally Threaded Fasteners
Category Cap Screws
Point Chamfered Point
Across Flats (Minimum) 1.631"
Diameter (Minimum) 1.114"
Head Style Detail Washer Face
Across Flats (Basic) 1-11/16"
Length (Nominal) 3-3/4"
Pitch UNC Coarse Thread
Diameter (Maximum) 1.125"
Coating Color Yellow
Across Flats (Maximum) 1.688"
Material Steel
Standards and Specifications ASME B18.2.1 and SAE J429
cad_3d_file_url https||//3d.aspenfasteners.com/assets/obj/BO020-1187X334.zip
Drive Style External Hex Drive
Diameter (Dimension) 1.125"
Thread Length (Nominal) 2.5"
POS BO020-1187X334-000025
Head Height, Overall 11/16"
Order Machine Thread Fasteners
Coating Zinc Plated
