Product Description
- 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.
- Diameter (Nominal): 1/4"
- Thread Pitch: 20
- Diameter (Dimension): 0.25"
- Diameter (Minimum): 0.245"
- Diameter (Maximum): 0.250"
- Length (Nominal): 1-1/4"
- Thread Length (Nominal): 0.75"
- Across Flats (Basic): 7/16"
- Across Flats (Minimum): 0.428"
- Across Flats (Maximum): 0.438"
- Head Height, Overall: 0.1563"
- Head Height, Overall (Minimum): 0.150"
- Head Height, Overall (Maximum): 0.163"
- 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
- Origin: Made in U.S.A.
- Standards and Specifications: ASME B18.2.1 and SAE J429
Product Videos
Custom Field
Head Height, Overall (Minimum) 0.150"
Head Style Hex Head
Category Cap Screws
Drive Style External Hex Drive
Diameter (Minimum) 0.245"
Standards and Specifications ASME B18.2.1 and SAE J429
Head Height, Overall (Maximum) 0.163"
Thread Direction Right-Hand Thread
Order Machine Thread Fasteners
Head Style Detail Washer Face
Material Steel
Product Class Externally Threaded Fasteners
POS BO020-1420X114-001900
Point Chamfered Point
Pitch UNC Coarse Thread
Diameter (Nominal) 1/4"
Brand Aspen Fasteners
Length (Nominal) 1-1/4"
Head Markings Six radial lines 60 degrees apart and manufacturer ID
System of Measurement Inch
Origin Made in U.S.A.
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Across Flats (Basic) 7/16"
Across Flats (Minimum) 0.428"
Across Flats (Maximum) 0.438"
Thread Pitch 20
Coating Zinc Plated
Diameter (Maximum) 0.250"
Head Height, Overall 0.1563"
Diameter (Dimension) 0.25"
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Material Grade Grade 8
Thread Length (Nominal) 0.75"
Coating Color Yellow
