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): 2-1/4"
- 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
Diameter (Nominal) 5/16"
Head Style Detail Washer Face
POS BO016-51618X214-000700
Thread Direction Right-Hand Thread
cad_3d_viewer_url https||//3d.aspenfasteners.com/viewer/?cad_model=obj/BO016-51618X214
Head Markings Three radial lines 120 degrees apart and manufacturer ID
Across Flats (Basic) 1/2"
Head Height, Overall 0.2031"
Material Grade Grade 5
Head Height, Overall (Maximum) 0.211"
Across Flats (Maximum) 0.500"
Thread Pitch 18
Across Flats (Minimum) 0.489"
Order Machine Thread Fasteners
Standards and Specifications ASME B18.2.1 and SAE J429
Category Cap Screws
Material Steel
Length (Nominal) 2-1/4"
Diameter (Maximum) 0.3125"
Thread Length (Nominal) 0.875"
Diameter (Minimum) 0.3065"
System of Measurement Inch
Drive Style External Hex Drive
Origin Made in U.S.A.
Coating Color Clear
Diameter (Dimension) 0.3125"
Pitch UNC Coarse Thread
Point Chamfered Point
Coating Zinc Plated
cad_3d_file_url https||//3d.aspenfasteners.com/assets/obj/BO016-51618X214.zip
Head Style Hex Head
Head Height, Overall (Minimum) 0.195"
Product Class Externally Threaded Fasteners
Brand Aspen Fasteners
