Product 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.
- Diameter (Nominal): 1/2"
- Thread Pitch: 20
- Diameter (Dimension): 0.5"
- Diameter (Minimum): 0.493"
- Diameter (Maximum): 0.500"
- Length (Nominal): 4-1/4"
- Thread Length (Nominal): 1.25"
- Across Flats (Basic): 3/4"
- Across Flats (Minimum): 0.736"
- Across Flats (Maximum): 0.750"
- Head Height, Overall: 5/16"
- Head Height, Overall (Minimum): 0.302"
- Head Height, Overall (Maximum): 0.323"
- 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
- Origin: Made in U.S.A.
- Standards and Specifications: ASME B18.2.1 and SAE J429
Product Videos
Custom Field
Diameter (Minimum) 0.493"
Head Markings Three radial lines 120 degrees apart and manufacturer ID
Head Height, Overall 5/16"
Order Machine Thread Fasteners
Diameter (Nominal) 1/2"
Head Height, Overall (Maximum) 0.323"
cad_3d_viewer_url https||//3d.aspenfasteners.com/viewer/?cad_model=obj/BO018-1220X414
Category Cap Screws
Diameter (Dimension) 0.5"
Coating Color Clear
Thread Direction Right-Hand Thread
cad_3d_file_url https||//3d.aspenfasteners.com/assets/obj/BO018-1220X414.zip
Across Flats (Minimum) 0.736"
Coating Zinc Plated
Material Steel
Point Chamfered Point
Standards and Specifications ASME B18.2.1 and SAE J429
Head Style Detail Washer Face
System of Measurement Inch
Head Style Hex Head
Drive Style External Hex Drive
Head Height, Overall (Minimum) 0.302"
Product Class Externally Threaded Fasteners
Across Flats (Maximum) 0.750"
Diameter (Maximum) 0.500"
Thread Length (Nominal) 1.25"
Length (Nominal) 4-1/4"
Pitch UNF Fine Thread
Origin Made in U.S.A.
Across Flats (Basic) 3/4"
Thread Pitch 20
POS BO018-1220X414-000125
Material Grade Grade 5
Brand Aspen Fasteners
