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): 3-1/2"
- 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
Thread Length (Nominal) 1.25"
cad_3d_file_url https||//3d.aspenfasteners.com/assets/obj/BO018-1220X312.zip
Material Steel
Material Grade Grade 5
Diameter (Maximum) 0.500"
Product Class Externally Threaded Fasteners
Brand Aspen Fasteners
Head Markings Three radial lines 120 degrees apart and manufacturer ID
Standards and Specifications ASME B18.2.1 and SAE J429
Head Style Hex Head
Diameter (Nominal) 1/2"
Coating Color Clear
System of Measurement Inch
Head Height, Overall 5/16"
Drive Style External Hex Drive
Thread Pitch 20
Point Chamfered Point
cad_3d_viewer_url https||//3d.aspenfasteners.com/viewer/?cad_model=obj/BO018-1220X312
Length (Nominal) 3-1/2"
Head Height, Overall (Maximum) 0.323"
Coating Zinc Plated
Across Flats (Basic) 3/4"
Order Machine Thread Fasteners
Diameter (Minimum) 0.493"
Thread Direction Right-Hand Thread
Across Flats (Maximum) 0.750"
Diameter (Dimension) 0.5"
Category Cap Screws
Head Style Detail Washer Face
Head Height, Overall (Minimum) 0.302"
Origin Made in U.S.A.
Across Flats (Minimum) 0.736"
Pitch UNF Fine Thread
POS BO018-1220X312-000150
