- Also known as coach bolts, are typically used to fasten metal to wood.
- The square neck under the head locks the bolt into place.
- ASTM A307 steel is a standard "industrial spec" low carbon grade of steel.
- A307 steel fasteners have a minimum tensile strength of 60,000 pounds per square inch.
- Can be used as a security fastener. The smooth head prevents unfastening from the head side.
DIMENSIONAL ATTRIBUTES- Diameter (Nominal): 1/4"
- Thread Pitch: 20
- Diameter (Dimension): 0.25"
- Diameter (Minimum): 0.237"
- Diameter (Maximum): 0.26"
- Length (Nominal): 4"
- Thread Length (Nominal): 3.844"
- Neck Width: 0.26"
- Neck Height: 0.156"
- Head Diameter (Minimum): 0.563"
- Head Diameter (Maximum): 0.594"
- Head Height, Overall (Minimum): 0.125"
- Head Height, Overall (Maximum): 0.145"
PRODUCT ATTRIBUTES- Category: Carriage Bolts
- System of Measurement: Inch
- Brand: Aspen Fasteners®
- Head Style: Round Head
- Head Style Detail: Square Neck
- Head Markings: Material Grade Mark "A307"
- Thread Length: Full Thread
- Thread Direction: Right-Hand Thread
- Material: Steel
- Material Grade: A307 Steel
- Coating: Oxidized
- Coating Color: Black
- Standards and Specifications: ASME B18.5
Product UPC Code:
698435009967
- Brand:
- Aspen Fasteners
- Category:
- Carriage Bolts
- Coating:
- Oxidized
- Coating Color:
- Black
- Diameter (Dimension):
- 0.25"
- Diameter (Maximum):
- 0.26"
- Diameter (Minimum):
- 0.237"
- Diameter (Nominal):
- 1/4"
- Head Diameter (Maximum):
- 0.594"
- Head Diameter (Minimum):
- 0.563"
- Head Height, Overall (Maximum):
- 0.145"
- Head Height, Overall (Minimum):
- 0.125"
- Head Markings:
- Material Grade Mark "A307"
- Head Style:
- Round Head
- Head Style Detail:
- Square Neck
- Length (Nominal):
- 4"
- Material:
- Steel
- Material Grade:
- A307 Steel
- Neck Height:
- 0.156"
- Neck Width:
- 0.26"
- Order:
- Machine Thread Fasteners
- Product Class:
- Externally Threaded Fasteners
- Standards and Specifications:
- ASME B18.5
- System of Measurement:
- Inch
- Thread Direction:
- Right-Hand Thread
- Thread Length:
- Full Thread
- Thread Length (Nominal):
- 3.844"
- Thread Pitch:
- 20
- cad_3d_file_url:
- https://3d.aspenfasteners.com/assets/obj/BO008-1420X4X4.zip
- cad_3d_viewer_url:
- https://3d.aspenfasteners.com/viewer/?cad_model=obj/BO008-1420X4X4
- specifications_document_url:
- https://www.aspenfasteners.com/content/2D_PDF/product75/BO008-1420X4X4.PDF
- Shop by Material:
- Steel
- Shop by System of Measurement:
- Inch
- POS:
- BO008-1420X4X4-000400
