#4-40 Button Socket Head Screws Black Oxide 18-8 Stainless Steel

#4-40 Black Oxide Stainless Steel Button Head Socket Cap Screws

Screw Diameter - Thread Pitch: #4-40


#4-40 Button Head Socket Cap Screws are bolts or machine screws with a Hex or Allen drive style.

  • Commonly referred to as allen bolts, button heads, or socket head screws
  • Clean and unstamped domed head with a flat bottom that protrudes above the installation surface
  • Cylindrical head and hexagonal drive style
  • Head diameter is nominally 1.5 times or more that of the screw shank (major) diameter
  • Chemically treated to add a mild extra layer of corrosion and abrasion resistance
  • Sleek black finished look

Black Oxide Stainless Steel Fasteners are commonly used in industries where the durability of Stainless Steel is required, but a smooth black look is desired. These industries include firearms, automotive (car and motorcycle), camping gear, archery, knife builds and product manufacturing.

Select Products Below See Product Specifications

NA = "Not Sold In Single Quantity"

Size
Select Package Quantity
SubTotal
Button Socket Head Screws Black Oxide 18-8 SS - #4-40 x 1/4" (FT)
SKU #12070002
Button Socket Head Screws Black Oxide 18-8 SS - #4-40 x 1/4" (FT)
SKU #12070002
1
NA
25
$4.25 (0.17/ea)
100
$9.00 (0.09/ea)
1000
$70.00 (0.07/ea)
Subtotal: $0.00 /
Button Socket Head Screws Black Oxide 18-8 SS - #4-40 x 5/16" (FT)
SKU #12070014
Button Socket Head Screws Black Oxide 18-8 SS - #4-40 x 5/16" (FT)
SKU #12070014
1
NA
25
$4.25 (0.17/ea)
100
$11.00 (0.11/ea)
1000
$100.00 (0.1/ea)
Subtotal: $0.00 /
Button Socket Head Screws Black Oxide 18-8 SS - #4-40 x 3/8" (FT)
SKU #12070026
Button Socket Head Screws Black Oxide 18-8 SS - #4-40 x 3/8" (FT)
SKU #12070026
1
NA
25
$4.25 (0.17/ea)
100
$9.00 (0.09/ea)
1000
$80.00 (0.08/ea)
Subtotal: $0.00 /
Button Socket Head Screws Black Oxide 18-8 SS - #4-40 x 1/2" (FT)
SKU #12070038
Button Socket Head Screws Black Oxide 18-8 SS - #4-40 x 1/2" (FT)
SKU #12070038
1
NA
25
$4.25 (0.17/ea)
100
$9.00 (0.09/ea)
1000
$80.00 (0.08/ea)
Subtotal: $0.00 /



FREQUENTLY USED WITH

1
$3.15 (3.15/ea)
10
$29.80 (2.98/ea)
25
$72.75 (2.91/ea)
50
$129.50 (2.59/ea)
Subtotal: $0.00 /
1
$0.25 (0.25/ea)
25
$3.25 (0.13/ea)
100
$10.00 (0.1/ea)
1000
$70.00 (0.07/ea)
Subtotal: $0.00 /
1
$0.25 (0.25/ea)
25
$3.75 (0.15/ea)
100
$13.00 (0.13/ea)
1000
$110.00 (0.11/ea)
Subtotal: $0.00 /
1
NA
25
$3.00 (0.12/ea)
100
$9.00 (0.09/ea)
1000
$80.00 (0.08/ea)
Subtotal: $0.00 /
1
NA
25
$5.00 (0.2/ea)
100
$15.00 (0.15/ea)
1000
$130.00 (0.13/ea)
Subtotal: $0.00 /

Product Specifications
ANSI
B1.1
Class
2A
Color
Black
Corrosion Resistant
Yes
Drive Style
Internal Hex (Allen)
Finish
Black Oxide
Grade
18-8
Head Diameter
Max 0.213 - Min 0.211
Head Height
Max 0.059 - Min 0.051
Head Style
Button
Hex Drive
1/16"
Material
Stainless Steel
Product Type
Button Head Socket Cap Screws
System of Measurement (Unit)
Inch
Thread Diameter
(#4) Max 0.1112 - Min 0.1061
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