#4-40 x 3" Socket Head Cap Screws, Full Thread / Alloy Steel / Thermal Black Oxide
- Steel
- Thermal Black Oxide
- 40 TPI · Coarse
- ASME B18.3, ASTM F835
$621.49
$6.21 / pc
Package of 100
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Product Description
#4-40 x 3" Socket Head Cap Screws, Full Thread / Alloy Steel / Thermal Black Oxide
Frequently Asked Questions
What hex key size do I need for this socket head cap screw?
Hex socket size depends on the screw thread size. Common sizes: #6 uses 7/64", #8 uses 9/64", #10 uses 5/32", 1/4" uses 3/16", 5/16" uses 1/4", 3/8" uses 5/16". For metric: M3 uses 2.5mm, M5 uses 4mm, M6 uses 5mm, M8 uses 6mm, M10 uses 8mm.
Does Black Oxide finish provide corrosion protection?
Black Oxide provides mild corrosion resistance through a controlled oxidation process. It is dimensionally stable (no plating buildup), will not chip or flake, and is suitable for indoor use. For outdoor or wet environments, additional oil coating or a different finish (zinc, stainless) is recommended.
$621.49
$6.21/pc
Socket Head Cap Screw, Partial Thread / Alloy Steel / Black Oxide
Family: 581
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#4-40 x 3" Socket Head Cap Screws, Full Thread / Alloy Steel / Thermal Black Oxide
SKU: 581126-100
Technical Specifications
Thread Size
#4-40
Thread Series
UNC
Thread Pitch
40 TPI
Thread Coverage
Full Thread
Length
3"
Material
Steel
Finish
Thermal Black Oxide
Drive
Hex Socket (Allen)
Head Style
Socket Head
Standard
ASME B18.3, ASTM F835
Tensile Strength
180000
Hardness
C37 - C45
Measurement System
Inch
SKU
581126-100
https://www.ecomfasteners.com/products/4-40-x-3-socket-head-cap-screw-full-thread-alloy-steel-black-oxide-astm-f835-sae-j429-asme-b18-3 · Printed