5/8"-18 X 4-1/2" Hex Head Cap Screws Bolts, UNF Fine Thread, Grade 5 Steel, Zinc, Made in U.S.A.

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.
• In general, fine thread fasteners are about 10% stronger than coarse threads under static loading.

• Diameter (Nominal): 5/8"
• Thread Pitch: 18
• Diameter (Dimension): 0.625"
• Diameter (Minimum): 0.617"
• Diameter (Maximum): 0.625"
• Length (Nominal): 4-1/2"
• Thread Length (Nominal): 1.5"
• Across Flats (Basic): 15/16"
• Across Flats (Minimum): 0.922"
• Across Flats (Maximum): 0.938"
• Head Height, Overall: 25/64"
• Head Height, Overall (Minimum): 0.378"
• Head Height, Overall (Maximum): 0.403"

• 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: UNF Fine 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