5/8"-18 X 4" Hex Head Cap Screws Bolts, UNF Fine Thread, Grade 5 Steel, Zinc

PART NUMBER:
BO058-5818X4-000120
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  • 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.
DIMENSIONAL ATTRIBUTES
  • Diameter (Nominal): 5/8"
  • Thread Pitch: 18
  • Diameter (Dimension): 0.625"
  • Diameter (Minimum): 0.617"
  • Diameter (Maximum): 0.625"
  • Length (Nominal): 4"
  • 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"
PRODUCT ATTRIBUTES
  • 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
  • Standards and Specifications: ASME B18.2.1 and SAE J429
Product UPC Code:
698435060531
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Across Flats (Basic):
15/16"
Across Flats (Maximum):
0.938"
Across Flats (Minimum):
0.922"
Brand:
Aspen Fasteners(r)
Category:
Cap Screws
Coating:
Zinc Plated
Coating Color:
Clear
Diameter (Dimension):
0.625"
Diameter (Maximum):
0.625"
Diameter (Minimum):
0.617"
Diameter (Nominal):
5/8"
Drive Style:
External Hex Drive
Head Height, Overall:
25/64"
Head Height, Overall (Maximum):
0.403"
Head Height, Overall (Minimum):
0.378"
Head Markings:
Three radial lines 120 degrees apart and manufacturer ID
Head Style:
Hex Head
Head Style Detail:
Washer Face
Length (Nominal):
4"
Material:
Steel
Material Grade:
Grade 5
Order:
Machine Thread Fasteners
POS:
BO058-5818X4-000120
Pitch:
UNF Fine Thread
Point:
Chamfered Point
Product Class:
Externally Threaded Fasteners
Standards and Specifications:
ASME B18.2.1 and SAE J429
System of Measurement:
Inch
Thread Direction:
Right-Hand Thread
Thread Length (Nominal):
1.5"
Thread Pitch:
18
cad_3d_viewer_url:
https://3d.aspenfasteners.com/viewer/?cad_model=obj/BO058-5818X4
specifications_document_url:
https://www.aspenfasteners.com/content/2D_PDF/product82/BO058-5818X4.PDF
Shop by Material:
Steel
Shop by System of Measurement:
Inch
  • 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.
    DIMENSIONAL ATTRIBUTES
    • Diameter (Nominal): 5/8"
    • Thread Pitch: 18
    • Diameter (Dimension): 0.625"
    • Diameter (Minimum): 0.617"
    • Diameter (Maximum): 0.625"
    • Length (Nominal): 4"
    • 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"
    PRODUCT ATTRIBUTES
    • 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
    • Standards and Specifications: ASME B18.2.1 and SAE J429
    Product UPC Code:
    698435060531

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