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"
- Thread Pitch: 8
- Diameter (Dimension): 1"
- Diameter (Minimum): 0.990"
- Diameter (Maximum): 1.000"
- Length (Nominal): 4"
- Thread Length (Nominal): 2.25"
- Across Flats (Basic): 1-1/2"
- Across Flats (Minimum): 1.469"
- Across Flats (Maximum): 1.500"
- Head Height, Overall: 39/64"
- Head Height, Overall (Minimum): 0.591"
- Head Height, Overall (Maximum): 0.627"
- 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
Diameter (Minimum) 0.990"
Material Steel
Coating Zinc Plated
Brand Aspen Fasteners
Across Flats (Maximum) 1.500"
Material Grade Grade 8
Product Class Externally Threaded Fasteners
System of Measurement Inch
Length (Nominal) 4"
Standards and Specifications ASME B18.2.1 and SAE J429
Category Cap Screws
Diameter (Nominal) 1"
Head Style Hex Head
Order Machine Thread Fasteners
Thread Pitch 8
Thread Length (Nominal) 2.25"
Head Markings Six radial lines 60 degrees apart and manufacturer ID
Diameter (Maximum) 1.000"
Thread Direction Right-Hand Thread
cad_3d_file_url https||//3d.aspenfasteners.com/assets/obj/BO020-18X4.zip
POS BO020-18X4-000035
cad_3d_viewer_url https||//3d.aspenfasteners.com/viewer/?cad_model=obj/BO020-18X4
Pitch UNC Coarse Thread
Drive Style External Hex Drive
Coating Color Yellow
Head Height, Overall 39/64"
Across Flats (Basic) 1-1/2"
Head Height, Overall (Maximum) 0.627"
Head Style Detail Washer Face
Point Chamfered Point
Origin Made in U.S.A.
Head Height, Overall (Minimum) 0.591"
Diameter (Dimension) 1"
Across Flats (Minimum) 1.469"
