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"
- 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
Standards and Specifications ASME B18.2.1 and SAE J429
Head Height, Overall 0.2031"
Origin Made in U.S.A.
Order Machine Thread Fasteners
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Across Flats (Maximum) 0.500"
Product Class Externally Threaded Fasteners
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Point Chamfered Point
Material Grade Grade 5
Across Flats (Basic) 1/2"
Pitch UNC Coarse Thread
Material Steel
Head Markings Three radial lines 120 degrees apart and manufacturer ID
Diameter (Minimum) 0.3065"
Thread Pitch 18
Head Style Hex Head
Thread Length (Nominal) 0.875"
Length (Nominal) 3"
Across Flats (Minimum) 0.489"
Diameter (Dimension) 0.3125"
POS BO016-51618X3-000500
Category Cap Screws
Head Height, Overall (Maximum) 0.211"
Diameter (Nominal) 5/16"
Coating Color Clear
Drive Style External Hex Drive
Brand Aspen Fasteners
Coating Zinc Plated
Head Height, Overall (Minimum) 0.195"
Diameter (Maximum) 0.3125"
Thread Direction Right-Hand Thread
Head Style Detail Washer Face
System of Measurement Inch
