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#4-40 X 3/8" Internal Tooth Washer SEMS Machine Screws, Hex Indented Washer Head, Steel, Zinc Plated and Baked

#4-40 X 3/8" Internal Tooth Washer SEMS Machine Screws, Hex Indented Washer Head, Steel, Zinc Plated and Baked

PART NUMBER:
SC228-440X38-010000
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  • Machine screws are designed for applications with a pre-tapped hole or mated to a threaded nut.
  • SEMS screws come pre-assembled with permanently installed free-spinning lock washer.
DIMENSIONAL ATTRIBUTES
  • Diameter (Nominal): #4
  • Thread Pitch: 40
  • Diameter (Dimension): 0.112"
  • Length (Nominal): 3/8"
  • Thread Length (Nominal): 0.375"
  • Outside Diameter (Minimum): 0.258"
  • Outside Diameter (Maximum): 0.268"
  • Thickness (Minimum): 0.015"
  • Thickness (Maximum): 0.019"
  • Across Flats (Minimum): 0.181"
  • Across Flats (Maximum): 0.188"
  • Head Height, Overall (Minimum): 0.049"
  • Head Height, Overall (Maximum): 0.060"
  • Flange Diameter (Minimum): 0.011"
  • Flange Diameter (Maximum): 0.019"
  • Flange Thickness (Minimum): 0.225"
  • Flange Thickness (Maximum): 0.243"
PRODUCT ATTRIBUTES
  • Category: Machine Screws
  • System of Measurement: Inch
  • Brand: Aspen Fasteners
  • Form and Design: SEMS Screws Pre-Assembled with a Captive Lock Washer
  • Head Style: Hex Indented Washer Head
  • Head Style Detail: Free-Spinning Internal Tooth Lock Washer
  • Drive Style: External Hex Drive
  • Thread Length: Full Thread
  • Thread Direction: Right-Hand Thread
  • Material: Steel
  • Coating: Zinc Plated and Baked
  • Coating Color: Clear
  • Origin: Origin Undefined
  • Standards and Specifications: ASME B18.13a and SAE J82
Product UPC Code:
698435374522
Thread Direction:
Right-Hand Thread
Diameter (Nominal):
#4
Standards and Specifications:
ASME B18.13a and SAE J82
Coating Color:
Clear
Coating:
Zinc Plated and Baked
Material:
Steel
Thread Length:
Full Thread
Drive Style:
External Hex Drive
Thread Pitch:
40
Diameter (Dimension):
0.112"
Length (Nominal):
3/8"
Head Style Detail:
Free-Spinning Internal Tooth Lock Washer
Head Style:
Hex Indented Washer Head
Form and Design:
SEMS Screws Pre-Assembled with a Captive Lock Washer
Brand:
Aspen Fasteners
System of Measurement:
Inch
Category:
Machine Screws
Order:
Machine Thread Fasteners
Product Class:
Externally Threaded Fasteners
Shop by Material:
Steel
Shop by System of Measurement:
Inch
Origin:
Origin Undefined
cad_3d_viewer_url:
https://3d.aspenfasteners.com/viewer/?cad_model=obj/SC228-440X38
POS:
SC228-440X38-010000
cad_3d_file_url:
https://3d.aspenfasteners.com/assets/obj/SC228-440X38.zip
specifications_document_url:
https://www.aspenfasteners.com/content/2D_PDF/product44/SC228-440X38.PDF
Across Flats (Minimum):
0.181"
Flange Diameter (Minimum):
0.011"
Flange Thickness (Minimum):
0.225"
Flange Diameter (Maximum):
0.019"
Outside Diameter (Minimum):
0.258"
Head Height, Overall (Maximum):
0.060"
Head Height, Overall (Minimum):
0.049"
Thread Length (Nominal):
0.375"
Thickness (Minimum):
0.015"
Across Flats (Maximum):
0.188"
Thickness (Maximum):
0.019"
Outside Diameter (Maximum):
0.268"
Flange Thickness (Maximum):
0.243"
Print
  • Description
    • Machine screws are designed for applications with a pre-tapped hole or mated to a threaded nut.
    • SEMS screws come pre-assembled with permanently installed free-spinning lock washer.
    DIMENSIONAL ATTRIBUTES
    • Diameter (Nominal): #4
    • Thread Pitch: 40
    • Diameter (Dimension): 0.112"
    • Length (Nominal): 3/8"
    • Thread Length (Nominal): 0.375"
    • Outside Diameter (Minimum): 0.258"
    • Outside Diameter (Maximum): 0.268"
    • Thickness (Minimum): 0.015"
    • Thickness (Maximum): 0.019"
    • Across Flats (Minimum): 0.181"
    • Across Flats (Maximum): 0.188"
    • Head Height, Overall (Minimum): 0.049"
    • Head Height, Overall (Maximum): 0.060"
    • Flange Diameter (Minimum): 0.011"
    • Flange Diameter (Maximum): 0.019"
    • Flange Thickness (Minimum): 0.225"
    • Flange Thickness (Maximum): 0.243"
    PRODUCT ATTRIBUTES
    • Category: Machine Screws
    • System of Measurement: Inch
    • Brand: Aspen Fasteners
    • Form and Design: SEMS Screws Pre-Assembled with a Captive Lock Washer
    • Head Style: Hex Indented Washer Head
    • Head Style Detail: Free-Spinning Internal Tooth Lock Washer
    • Drive Style: External Hex Drive
    • Thread Length: Full Thread
    • Thread Direction: Right-Hand Thread
    • Material: Steel
    • Coating: Zinc Plated and Baked
    • Coating Color: Clear
    • Origin: Origin Undefined
    • Standards and Specifications: ASME B18.13a and SAE J82
    Product UPC Code:
    698435374522
  • 3D Product View

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