#4-40 Slotted Round Head Machine Screw Solid Brass

#4-40 Brass Slotted Round Head Machine Screws

Diameter - Thread Pitch: #4-40


  • Slotted drive style designed to be driven by a flat head or slotted screwdriver or bit
  • ASME standards specific
  • Used with a tapped hole or nut
  • Conducts electricity and heat
  • A machine screw is commonly identified by its small size
  • Brass is an alloy made of copper and zinc
  • Color can vary from dark to light based upon the zinc content
  • Prized for its corrosion resistance but is a very soft metal
  • Commonly used for:
    • Pipes
    • Weather Stripping
    • Trim
    • Radiators
    • Musical Instruments
    • Firearms

#4-40 Slotted round head machine screws are available in corrosion resistant brass.
NOTE: Color and sheen may vary

Select Products Below See Product Specifications

NA = "Not Sold In Single Quantity"

Size
Select Package Quantity
SubTotal
Slotted Round Head Machine Screw Solid Brass - #4-40 x 1/8"
SKU #1019-10002-0002
Slotted Round Head Machine Screw Solid Brass - #4-40 x 1/8"
SKU #1019-10002-0002
1
NA
25
$4.00 (0.16/ea)
100
$7.00 (0.07/ea)
1000
$60.00 (0.06/ea)
Subtotal: $0.00 /
Slotted Round Head Machine Screw Solid Brass - #4-40 x 3/16"
SKU #1019-10002-0012
Slotted Round Head Machine Screw Solid Brass - #4-40 x 3/16"
SKU #1019-10002-0012
1
NA
25
$3.75 (0.15/ea)
100
$7.00 (0.07/ea)
1000
$60.00 (0.06/ea)
Subtotal: $0.00 /
Slotted Round Head Machine Screw Solid Brass - #4-40 x 1/4"
SKU #1019-10002-0022
Slotted Round Head Machine Screw Solid Brass - #4-40 x 1/4"
SKU #1019-10002-0022
1
NA
25
$3.75 (0.15/ea)
100
$7.00 (0.07/ea)
1000
$60.00 (0.06/ea)
Subtotal: $0.00 /
Slotted Round Head Machine Screw Solid Brass - #4-40 x 3/8"
SKU #1019-10002-0050
Slotted Round Head Machine Screw Solid Brass - #4-40 x 3/8"
SKU #1019-10002-0050
1
NA
25
$3.75 (0.15/ea)
100
$7.00 (0.07/ea)
1000
$60.00 (0.06/ea)
Subtotal: $0.00 /
Slotted Round Head Machine Screw Solid Brass - #4-40 x 7/16"
SKU #1019-10002-0060
Slotted Round Head Machine Screw Solid Brass - #4-40 x 7/16"
SKU #1019-10002-0060
1
NA
25
$5.75 (0.23/ea)
100
$17.00 (0.17/ea)
1000
$150.00 (0.15/ea)
Subtotal: $0.00 /
Slotted Round Head Machine Screw Solid Brass - #4-40 x 1/2"
SKU #1019-10002-0070
Slotted Round Head Machine Screw Solid Brass - #4-40 x 1/2"
SKU #1019-10002-0070
1
NA
25
$4.00 (0.16/ea)
100
$8.00 (0.08/ea)
1000
$70.00 (0.07/ea)
Subtotal: $0.00 /
Slotted Round Head Machine Screw Solid Brass - #4-40 x 5/8"
SKU #1019-10002-0080
Slotted Round Head Machine Screw Solid Brass - #4-40 x 5/8"
SKU #1019-10002-0080
1
NA
25
$4.25 (0.17/ea)
100
$9.00 (0.09/ea)
1000
$80.00 (0.08/ea)
Subtotal: $0.00 /
Slotted Round Head Machine Screw Solid Brass - #4-40 x 3/4"
SKU #1019-10002-0090
Slotted Round Head Machine Screw Solid Brass - #4-40 x 3/4"
SKU #1019-10002-0090
1
NA
25
$4.25 (0.17/ea)
100
$9.00 (0.09/ea)
1000
$80.00 (0.08/ea)
Subtotal: $0.00 /
Slotted Round Head Machine Screw Solid Brass - #4-40 x 1"
SKU #1019-10002-0110
Slotted Round Head Machine Screw Solid Brass - #4-40 x 1"
SKU #1019-10002-0110
1
NA
25
$5.00 (0.2/ea)
100
$13.00 (0.13/ea)
1000
$120.00 (0.12/ea)
Subtotal: $0.00 /
Slotted Round Head Machine Screw Solid Brass - #4-40 x 1-1/4"
SKU #1019-10002-0120
Slotted Round Head Machine Screw Solid Brass - #4-40 x 1-1/4"
SKU #1019-10002-0120
1
NA
25
$7.50 (0.3/ea)
100
$14.00 (0.14/ea)
1000
$130.00 (0.13/ea)
Subtotal: $0.00 /
Slotted Round Head Machine Screw Solid Brass - #4-40 x 1-1/2"
SKU #1019-10002-0130
Slotted Round Head Machine Screw Solid Brass - #4-40 x 1-1/2"
SKU #1019-10002-0130
1
NA
25
$7.75 (0.31/ea)
100
$16.00 (0.16/ea)
1000
$140.00 (0.14/ea)
Subtotal: $0.00 /
Slotted Round Head Machine Screw Solid Brass - #4-40 x 1-3/4"
SKU #1019-10002-0140
Slotted Round Head Machine Screw Solid Brass - #4-40 x 1-3/4"
SKU #1019-10002-0140
1
NA
25
$8.25 (0.33/ea)
100
$30.00 (0.3/ea)
1000
$290.00 (0.29/ea)
Subtotal: $0.00 /
Slotted Round Head Machine Screw Solid Brass - #4-40 x 2"
SKU #1019-10002-0150
Slotted Round Head Machine Screw Solid Brass - #4-40 x 2"
SKU #1019-10002-0150
1
NA
25
$11.00 (0.44/ea)
100
$23.00 (0.23/ea)
1000
$210.00 (0.21/ea)
Subtotal: $0.00 /

Frequently Used With

1
NA
25
$2.00 (0.08/ea)
100
$5.00 (0.05/ea)
1000
$40.00 (0.04/ea)
Subtotal: $0.00 /
1
NA
25
$2.50 (0.1/ea)
100
$3.00 (0.03/ea)
1000
$20.00 (0.02/ea)
Subtotal: $0.00 /

Product Specifications
ANSI
B18.6.3
Color
Yellow
Color May Vary
Color and sheen may vary
Corrosion Resistant
Yes
Drive Style
Slotted
Elongation
10% - 25%
Fit
Class 2A
Hardness
40-75 Rockwell B
Head Diameter
Max 0.211 - Min 0.193
Head Style
Round
Material
Brass
Overall Head Height
Max 0.086 - Min 0.075
Product Type
Slotted Round Head Machine Screw
Standards Met
ASME, ANSI B18.6.3
System of Measurement (Unit)
Inch
Tensile PSI
50,000 - 65,000 PSI
Thread Direction
Right Hand
Thread Pitch (Count)
40 Per Inch
Thread Standard
UNC
Thread Type
Coarse
Tolerance (IFI)
Actual measurements may vary slightly +/- depending on production run within IFI Tolerances
Yield PSI
30,000 - 50,000 PSI