- Also known as hex flange bolts, frame bolts or hex washer bolts.
- Flange under the head acts like a washer to increase the bearing surface and distribute the load.
- Serrated teeth under the head bite into the mating surface as tightened to prevent loosening.
- The heads of grade 5 steel fasteners are typically marked with 3 raised radial lines.
- Grade 5 steel fasteners have a minimum tensile strength of 105,000 pounds per square inch.
- Diameter (Nominal): 1/4"
- Thread Pitch: 20
- Diameter (Dimension): 0.25"
- Length (Nominal): 5/8"
- Thread Length: 0.625"
- Across Flats (Basic): 3/8"
- Across Flats (Minimum): 0.367"
- Across Flats (Maximum): 0.375"
- Head Height, Overall: 0.28"
- Flange Diameter: 0.565"
- Product Class: Externally Threaded Fasteners
- Order: Machine Thread Fasteners
- Category: Flange Screws
- System of Measurement: Inch
- Brand: Aspen Fasteners®
- Head Style: Hex Flange Head
- Head Style Detail: Locking Serrations
- Drive Style: External Hex Drive
- Thread Length: Full Thread
- Thread Direction: Right-Hand Thread
- Material: Steel
- Material Grade: Grade 5 Steel
- Material Processes: Quenched and Tempered
- Coating: Zinc Plated
- Coating Color: Clear
- Hardness Rating: Rockwell C25-C34
Product UPC Code:
692559855165
- System of Measurement:
- Inch
- Category:
- Flange Screws
- Order:
- Machine Thread Fasteners
- Shop by System of Measurement:
- Inch
- Shop by Material:
- Steel
- Product Class:
- Externally Threaded Fasteners
- Diameter (Dimension):
- 0.25"
- Diameter (Nominal):
- 1/4"
- Hardness Rating:
- Rockwell C25-C34
- Coating Color:
- Clear
- Coating:
- Zinc Plated
- Material Processes:
- Quenched and Tempered
- Material Grade:
- Grade 5 Steel
- Material:
- Steel
- Thread Direction:
- Right-Hand Thread
- Thread Length:
- Full Thread
- Flange Diameter:
- 0.565"
- Head Height, Overall:
- 0.28"
- Across Flats (Maximum):
- 0.375"
- Across Flats (Minimum):
- 0.367"
- Across Flats (Basic):
- 3/8"
- Thread Length:
- 0.625"
- Length (Nominal):
- 5/8"
- Thread Pitch:
- 20
- Drive Style:
- External Hex Drive
- Head Style Detail:
- Locking Serrations
- Head Style:
- Hex Flange Head
- Brand:
- Aspen Fasteners
- POS:
- BO028-1420X58-002500
