5/16"-18 X 1" Hex Head Cap Screws Bolts, Coarse Thread, ASTM A354 Grade BD Alloy Steel, Yellow Zinc and Baked, B1821BH (supersedes MS90727F), DFARS

PART NUMBER:
MI006-51618X1-001400
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  • Military grade fasteners are DFARS compliant and made in North America. Certifications available.
  • Hex cap screws are manufactured to tighter tolerances as compared to hex bolts.
  • The washer face under the head provides a precision bearing surface.
  • The chamfered point improves engagement with a nut or pre-tapped hole.
DIMENSIONAL ATTRIBUTES
  • Diameter (Nominal): 5/16"
  • Thread Pitch: 18
  • Diameter (Dimension): 0.3125"
  • Diameter (Minimum): 0.3065"
  • Diameter (Maximum): 0.3125"
  • Length (Nominal): 1"
  • 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"
PRODUCT ATTRIBUTES
  • Category: Cap Screws
  • System of Measurement: Inch
  • Brand: Aspen Fasteners
  • Head Style: Hex Head
  • Head Style Detail: Washer Face
  • Head Markings: Material Grade Mark "BD"
  • Drive Style: External Hex Drive
  • Pitch: Coarse Thread
  • Thread Direction: Right-Hand Thread
  • Point: Chamfered Point
  • Material: Steel
  • Material Grade: Alloy Steel ASTM A354 Grade BD
  • Coating: Zinc Plated and Baked
  • Coating Color: Yellow
  • Origin: Made in U.S.A.
  • Standards and Specifications: ASME B18.2.1.BH, DFARS
Product UPC Code:
692559445946
specifications_document_url:
https://www.aspenfasteners.com/content/2D_PDF/product77/MI006-51618X1.PDF
Shop by Application:
Military Grade Fasteners
Point:
Chamfered Point
Drive Style:
External Hex Drive
Order:
Machine Thread Fasteners
Head Height, Overall (Minimum):
0.195"
Coating Color:
Yellow
System of Measurement:
Inch
Pitch:
Coarse Thread
Shop by Material:
Steel
Length (Nominal):
1"
Shop by System of Measurement:
Inch
Across Flats (Maximum):
0.500"
Brand:
Aspen Fasteners
Diameter (Dimension):
0.3125"
Material Grade:
Alloy Steel ASTM A354 Grade BD
Coating:
Zinc Plated and Baked
Across Flats (Minimum):
0.489"
Product Class:
Externally Threaded Fasteners
Material:
Steel
Thread Direction:
Right-Hand Thread
Diameter (Minimum):
0.3065"
Head Height, Overall (Maximum):
0.211"
cad_3d_viewer_url:
https://3d.aspenfasteners.com/viewer/?cad_model=obj/MI006-51618X1
Thread Length (Nominal):
0.875"
Diameter (Nominal):
5/16"
cad_3d_file_url:
https://3d.aspenfasteners.com/assets/obj/MI006-51618X1.zip
Standards and Specifications:
ASME B18.2.1.BH, DFARS
Head Height, Overall:
0.2031"
Head Style Detail:
Washer Face
Origin:
Made in U.S.A.
Head Style:
Hex Head
Across Flats (Basic):
1/2"
Diameter (Maximum):
0.3125"
Thread Pitch:
18
Category:
Cap Screws
Head Markings:
Material Grade Mark "BD"
POS:
MI006-51618X1-001400
  • Description
    • Military grade fasteners are DFARS compliant and made in North America. Certifications available.
    • Hex cap screws are manufactured to tighter tolerances as compared to hex bolts.
    • The washer face under the head provides a precision bearing surface.
    • The chamfered point improves engagement with a nut or pre-tapped hole.
    DIMENSIONAL ATTRIBUTES
    • Diameter (Nominal): 5/16"
    • Thread Pitch: 18
    • Diameter (Dimension): 0.3125"
    • Diameter (Minimum): 0.3065"
    • Diameter (Maximum): 0.3125"
    • Length (Nominal): 1"
    • 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"
    PRODUCT ATTRIBUTES
    • Category: Cap Screws
    • System of Measurement: Inch
    • Brand: Aspen Fasteners
    • Head Style: Hex Head
    • Head Style Detail: Washer Face
    • Head Markings: Material Grade Mark "BD"
    • Drive Style: External Hex Drive
    • Pitch: Coarse Thread
    • Thread Direction: Right-Hand Thread
    • Point: Chamfered Point
    • Material: Steel
    • Material Grade: Alloy Steel ASTM A354 Grade BD
    • Coating: Zinc Plated and Baked
    • Coating Color: Yellow
    • Origin: Made in U.S.A.
    • Standards and Specifications: ASME B18.2.1.BH, DFARS
    Product UPC Code:
    692559445946
  • 3D Product View

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