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.
- Diameter (Nominal): 5/16"
- Thread Pitch: 18
- Diameter (Dimension): 0.3125"
- Diameter (Minimum): 0.3065"
- Diameter (Maximum): 0.3125"
- Length (Nominal): 3-3/4"
- Thread Length (Nominal): 0.875"
- Across Flats (Basic): 1/2"
- Across Flats (Minimum): 0.489"
- Across Flats (Maximum): 0.500"
- Head Height, Overall: 0.2031"
- Head Height, Overall (Minimum): 0.195"
- Head Height, Overall (Maximum): 0.211"
- 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: UNC Coarse 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 Style Detail Washer Face
Material Steel
Diameter (Nominal) 5/16"
Head Height, Overall (Minimum) 0.195"
Drive Style External Hex Drive
Brand Aspen Fasteners
Thread Pitch 18
Head Height, Overall 0.2031"
System of Measurement Inch
cad_3d_file_url https||//3d.aspenfasteners.com/assets/obj/BO016-51618X334.zip
Diameter (Maximum) 0.3125"
Point Chamfered Point
POS BO016-51618X334-000400
Head Style Hex Head
Order Machine Thread Fasteners
Standards and Specifications ASME B18.2.1 and SAE J429
Across Flats (Basic) 1/2"
Coating Color Clear
Across Flats (Maximum) 0.500"
Length (Nominal) 3-3/4"
Product Class Externally Threaded Fasteners
Across Flats (Minimum) 0.489"
Origin Made in U.S.A.
Diameter (Minimum) 0.3065"
Thread Length (Nominal) 0.875"
Head Markings Three radial lines 120 degrees apart and manufacturer ID
Material Grade Grade 5
Pitch UNC Coarse Thread
Coating Zinc Plated
Diameter (Dimension) 0.3125"
Thread Direction Right-Hand Thread
Head Height, Overall (Maximum) 0.211"
Category Cap Screws
cad_3d_viewer_url https||//3d.aspenfasteners.com/viewer/?cad_model=obj/BO016-51618X334
