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Machine Screws, Knurled Thumb, Brass, 1/4"-20

Machine Screws, Knurled Thumb, Brass, 1/4"-20

Diameter - Thread Pitch: 1/4"-20

  • Knurled head intended to be driven by fingers
  • ASME Standards specific
  • Aesthetically pleasing and typically used for ornamental products
  • The more zinc in a screw the lighter it will tend to be
  • A machine screw is commonly identified by its small size
  • Brass is corrosive resistant but very soft material
  • Commonly used for:
    • Firearms
    • Weather Stripping
    • Pipes

1/4"-20 Knurled head thumb 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/SKU
Select Package Quantity Price
SubTotal
1/4"-20 x 3/8"
SKU #1018-10004-0002
1/4"-20 x 3/8"
SKU #1018-10004-0002
1 $1.80 (1.8/ea)
100 $149.00 (1.49/ea)
1000 $1,350.00 (1.35/ea)
Subtotal: $0.00 /
1/4"-20 x 1/2"
SKU #1018-10004-0014
1/4"-20 x 1/2"
SKU #1018-10004-0014
1 $2.20 (2.2/ea)
100 $182.00 (1.82/ea)
1000 $1,650.00 (1.65/ea)
Subtotal: $0.00 /
1/4"-20 x 3/4"
SKU #1018-10004-0026
1/4"-20 x 3/4"
SKU #1018-10004-0026
1 $2.40 (2.4/ea)
100 $198.00 (1.98/ea)
1000 $1,800.00 (1.8/ea)
Subtotal: $0.00 /
1/4"-20 x 1"
SKU #1018-10004-0038
1/4"-20 x 1"
SKU #1018-10004-0038
1 $2.40 (2.4/ea)
100 $198.00 (1.98/ea)
1000 $1,800.00 (1.8/ea)
Subtotal: $0.00 /
1/4"-20 x 2"
SKU #1018-10004-0050
1/4"-20 x 2"
SKU #1018-10004-0050
1 $2.88 (2.88/ea)
100 $238.00 (2.38/ea)
1000 $2,160.00 (2.16/ea)
Subtotal: $0.00 /

Frequently Used With

Knurled Thumb Nuts, Brass, 1/4-20 (5/8 Dia x 3/8 Thick)
Knurled Thumb Nuts, Brass, 1/4-20 (5/8 Dia x 3/8 Thick) 122052
Knurled Thumb Nuts, Brass, 1/4-20 (5/8 Dia x 3/8 Thick)
1 $1.80 (1.8/ea)
100 $165.00 (1.65/ea)
1000 $1,600.00 (1.6/ea)
Subtotal: $0.00
Hex Finish Nuts, Brass, 1/4"-20 (7/16" Flats x 7/32" Thick)
Hex Finish Nuts, Brass, 1/4"-20 (7/16" Flats x 7/32" Thick) 230002
Hex Finish Nuts, Brass, 1/4
1 $0.28 (0.28/ea)
100 $18.00 (0.18/ea)
1000 $170.00 (0.17/ea)
Subtotal: $0.00
Flat Washers, Brass, 1/4" Small (.260 ID x .562 OD x .040 Thick)
Flat Washers, Brass, 1/4" Small (.260 ID x .562 OD x .040 Thick) 4000122
Flat Washers, Brass, 1/4
1 $0.24 (0.24/ea)
100 $12.00 (0.12/ea)
1000 $110.00 (0.11/ea)
Subtotal: $0.00
Flat Washers, Brass, 1/4" Large (.260 ID x .687 OD x .051 Thick)
Flat Washers, Brass, 1/4" Large (.260 ID x .687 OD x .051 Thick) 4000132
Flat Washers, Brass, 1/4
1 $0.25 (0.25/ea)
100 $13.00 (0.13/ea)
1000 $120.00 (0.12/ea)
Subtotal: $0.00
Wing Nuts, Brass, 1/4"-20 (Wing Span 1.10/.97 x .187 Thick)
Wing Nuts, Brass, 1/4"-20 (Wing Span 1.10/.97 x .187 Thick) 210052
Wing Nuts, Brass, 1/4
1 $0.32 (0.32/ea)
100 $25.00 (0.25/ea)
1000 $200.00 (0.2/ea)
Subtotal: $0.00
Product Specifications
Product Specifications
ANSI
B18.6.3
Color
Yellow
Color May Vary
Color and sheen may vary
Corrosion Resistant
Yes
Drive Style
Thumb
Elongation
10% - 25%
Hardness
40-75 Rockwell B
Head Diameter
23/32" (.09375)
Head Style
Thumb
Material
Brass
Overall Head Height
1/2"
Product Type
Knurled Head Thumb Screws
System of Measurement (Unit)
Inch
Thread Diameter
1/4"
Thread Diameter Major
0.2489
Thread Diameter Minor
0.2408
Thread Direction
Right Hand
Thread Pitch (Count)
20 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

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