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): 1/2"
- Thread Pitch: 13
- Diameter (Dimension): 0.5"
- Diameter (Minimum): 0.493"
- Diameter (Maximum): 0.500"
- Length (Nominal): 4-3/4"
- Thread Length (Nominal): 1.25"
- Across Flats (Basic): 3/4"
- Across Flats (Minimum): 0.736"
- Across Flats (Maximum): 0.750"
- Head Height, Overall: 5/16"
- Head Height, Overall (Minimum): 0.302"
- Head Height, Overall (Maximum): 0.323"
- 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
cad_3d_viewer_url https||//3d.aspenfasteners.com/viewer/?cad_model=obj/BO020-1213X434
Across Flats (Minimum) 0.736"
Drive Style External Hex Drive
Head Height, Overall (Maximum) 0.323"
Thread Length (Nominal) 1.25"
Product Class Externally Threaded Fasteners
Pitch UNC Coarse Thread
Coating Color Yellow
Diameter (Minimum) 0.493"
Across Flats (Maximum) 0.750"
Head Height, Overall 5/16"
Across Flats (Basic) 3/4"
Length (Nominal) 4-3/4"
Thread Pitch 13
Standards and Specifications ASME B18.2.1 and SAE J429
Material Steel
Thread Direction Right-Hand Thread
Brand Aspen Fasteners
POS BO020-1213X434-000125
Head Style Hex Head
Diameter (Dimension) 0.5"
Material Grade Grade 8
Head Style Detail Washer Face
System of Measurement Inch
Diameter (Maximum) 0.500"
Head Height, Overall (Minimum) 0.302"
Head Markings Six radial lines 60 degrees apart and manufacturer ID
Origin Made in U.S.A.
Coating Zinc Plated
Category Cap Screws
Point Chamfered Point
Diameter (Nominal) 1/2"
Order Machine Thread Fasteners