- 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): 1"
- Thread Pitch: 8
- Diameter (Dimension): 1"
- Diameter (Minimum): 0.990"
- Diameter (Maximum): 1.000"
- Length (Nominal): 4"
- Thread Length (Nominal): 2.25"
- Across Flats (Basic): 1-1/2"
- Across Flats (Minimum): 1.469"
- Across Flats (Maximum): 1.500"
- Head Height, Overall: 39/64"
- Head Height, Overall (Minimum): 0.591"
- Head Height, Overall (Maximum): 0.627"
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: Zinc Plated
- Coating Color: Yellow
- Standards and Specifications: ASME B18.2.1 and SAE J429
Product UPC Code:
698435055728
- Across Flats (Basic):
- 1-1/2"
- Across Flats (Maximum):
- 1.500"
- Across Flats (Minimum):
- 1.469"
- Brand:
- Aspen Fasteners
- Category:
- Cap Screws
- Coating:
- Zinc Plated
- Coating Color:
- Yellow
- Diameter (Dimension):
- 1"
- Diameter (Maximum):
- 1.000"
- Diameter (Minimum):
- 0.990"
- Diameter (Nominal):
- 1"
- Drive Style:
- External Hex Drive
- Head Height, Overall:
- 39/64"
- Head Height, Overall (Maximum):
- 0.627"
- Head Height, Overall (Minimum):
- 0.591"
- Head Markings:
- Six radial lines 60 degrees apart and manufacturer ID
- Head Style:
- Hex Head
- Head Style Detail:
- Washer Face
- Length (Nominal):
- 4"
- Material:
- Steel
- Material Grade:
- Grade 8
- Order:
- Machine Thread Fasteners
- POS:
- BO055-18X4-000040
- Pitch:
- UNC Coarse 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):
- 2.25"
- Thread Pitch:
- 8
- cad_3d_file_url:
- https://3d.aspenfasteners.com/assets/obj/BO055-18X4.zip
- cad_3d_viewer_url:
- https://3d.aspenfasteners.com/viewer/?cad_model=obj/BO055-18X4
- specifications_document_url:
- https://www.aspenfasteners.com/content/2D_PDF/product82/BO055-18X4.PDF
- Shop by Material:
- Steel
- Shop by System of Measurement:
- Inch
