Product Description
- Hex cap screws are manufactured to tighter tolerances as compared to hex bolts.
- The heads of grade 5 steel fasteners are typically marked with 3 raised radial lines.
- The washer face under the head provides a precision bearing surface.
- Grade 5 steel fasteners have a minimum tensile strength of 105,000 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): 2-3/4"
- Thread Length (Nominal): 1.125"
- 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: Three radial lines 120 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 5
- Coating: Zinc Plated
- Coating Color: Clear
- Origin: Made in U.S.A.
- Standards and Specifications: ASME B18.2.1 and SAE J429
Product Videos
Custom Field
Head Markings Three radial lines 120 degrees apart and manufacturer ID
Diameter (Maximum) 0.4375"
Brand Aspen Fasteners
Category Cap Screws
Across Flats (Basic) 5/8"
Head Style Hex Head
Diameter (Dimension) 0.4375"
Coating Zinc Plated
Head Style Detail Washer Face
Order Machine Thread Fasteners
cad_3d_file_url https||//3d.aspenfasteners.com/assets/obj/BO018-71620X234.zip
Coating Color Clear
Thread Pitch 20
Across Flats (Minimum) 0.612"
Head Height, Overall (Maximum) 0.291"
Product Class Externally Threaded Fasteners
Drive Style External Hex Drive
Diameter (Minimum) 0.4305"
cad_3d_viewer_url https||//3d.aspenfasteners.com/viewer/?cad_model=obj/BO018-71620X234
Material Grade Grade 5
Thread Length (Nominal) 1.125"
Diameter (Nominal) 7/16"
Material Steel
Length (Nominal) 2-3/4"
Origin Made in U.S.A.
Head Height, Overall 0.2813"
Standards and Specifications ASME B18.2.1 and SAE J429
Point Chamfered Point
System of Measurement Inch
Across Flats (Maximum) 0.625"
Head Height, Overall (Minimum) 0.272"
POS BO018-71620X234-000300
Thread Direction Right-Hand Thread
Pitch UNF Fine Thread
