5/16″-18 X 1/2″ Hex Head Cap Screws Bolts, UNC Coarse Thread, Grade 8 Steel, Plain

Description

• Hex cap screws are manufactured to tighter tolerances as compared to hex bolts.
• The heads of grade 8 steel fasteners are typically marked with 6 raised radial lines.
• The washer face under the head provides a precision bearing surface.
• Grade 8 steel fasteners have a minimum tensile strength of 150,000 pounds per square inch.
• The chamfered point improves engagement with a nut or pre-tapped hole.

DIMENSIONAL ATTRIBUTES

• Diameter (Nominal): 5/16″
• Thread Pitch: 18
• Diameter (Dimension): 0.3125″
• Diameter (Minimum): 0.3065″
• Diameter (Maximum): 0.3125″
• Length (Nominal): 1/2″
• Thread Length (Nominal): 0.5″
• 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″

PRODUCT ATTRIBUTES

• Category: Cap Screws
• System of Measurement: Inch
• Brand: Aspen Fasteners®
• Head Style: Hex Head
• Head Style Detail: Washer Face
• Head Markings: Six radial lines 60 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 8
• Coating: Uncoated
• Standards and Specifications: ASME B18.2.1 and SAE J429