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): 5/16"
- Thread Pitch: 24
- Diameter (Dimension): 0.3125"
- Diameter (Minimum): 0.3065"
- Diameter (Maximum): 0.3125"
- Length (Nominal): 1-1/8"
- Thread Length (Nominal): 0.875"
- Across Flats (Basic): 1/2"
- Across Flats (Minimum): 0.489"
- Across Flats (Maximum): 0.500"
- Head Height, Overall: 0.2031"
- Head Height, Overall (Minimum): 0.195"
- Head Height, Overall (Maximum): 0.211"
- 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) 0.875"
Category Cap Screws
Across Flats (Minimum) 0.489"
Product Class Externally Threaded Fasteners
Head Style Hex Head
Length (Nominal) 1-1/8"
Point Chamfered Point
Origin Made in U.S.A.
Diameter (Maximum) 0.3125"
Diameter (Nominal) 5/16"
Thread Pitch 24
Head Height, Overall (Maximum) 0.211"
Material Grade Grade 5
Across Flats (Basic) 1/2"
Coating Zinc Plated
Pitch UNF Fine Thread
Thread Direction Right-Hand Thread
cad_3d_file_url https||//3d.aspenfasteners.com/assets/obj/BO018-51624X118.zip
Head Markings Three radial lines 120 degrees apart and manufacturer ID
Coating Color Clear
POS BO018-51624X118-001200
cad_3d_viewer_url https||//3d.aspenfasteners.com/viewer/?cad_model=obj/BO018-51624X118
Diameter (Minimum) 0.3065"
Head Style Detail Washer Face
Material Steel
Head Height, Overall 0.2031"
Head Height, Overall (Minimum) 0.195"
System of Measurement Inch
Order Machine Thread Fasteners
Diameter (Dimension) 0.3125"
Across Flats (Maximum) 0.500"
Drive Style External Hex Drive
Standards and Specifications ASME B18.2.1 and SAE J429
Brand Aspen Fasteners
