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): 1-3/4"
- 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
Point Chamfered Point
Head Height, Overall (Minimum) 0.195"
POS BO016-51618X134-000850
Coating Zinc Plated
Product Class Externally Threaded Fasteners
Coating Color Clear
Head Height, Overall (Maximum) 0.211"
cad_3d_file_url https||//3d.aspenfasteners.com/assets/obj/BO016-51618X134.zip
Across Flats (Basic) 1/2"
Brand Aspen Fasteners
Head Style Detail Washer Face
Across Flats (Maximum) 0.500"
Across Flats (Minimum) 0.489"
cad_3d_viewer_url https||//3d.aspenfasteners.com/viewer/?cad_model=obj/BO016-51618X134
Thread Length (Nominal) 0.875"
System of Measurement Inch
Length (Nominal) 1-3/4"
Category Cap Screws
Standards and Specifications ASME B18.2.1 and SAE J429
Thread Direction Right-Hand Thread
Drive Style External Hex Drive
Head Height, Overall 0.2031"
Material Grade Grade 5
Diameter (Dimension) 0.3125"
Thread Pitch 18
Head Style Hex Head
Material Steel
Diameter (Maximum) 0.3125"
Origin Made in U.S.A.
Diameter (Minimum) 0.3065"
Order Machine Thread Fasteners
Head Markings Three radial lines 120 degrees apart and manufacturer ID
Pitch UNC Coarse Thread
Diameter (Nominal) 5/16"
