5/16"-18 Finished Hex Nuts / Grade 5 / Black Oxide
- Steel
- Grade 5
- Black Oxide
- 18 TPI · Coarse
- ASME B18.2.2
$80.64
$0.269 / pc
Package of 300
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Product Description
5/16"-18 Finished Hex Nuts / Grade 5 / Black Oxide
RoHS Compliant
Frequently Asked Questions
What is the difference between Grade 5 and Grade 8?
Grade 5 (medium carbon steel, 120 ksi tensile strength) is suitable for most industrial applications. Grade 8 (alloy steel, 150 ksi tensile strength) is used for high-strength applications like automotive suspension and machinery. Grade 5 hex heads have 3 radial lines; Grade 8 has 6 radial lines.
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.
$80.64
$0.269/pc
Finished Hex Nuts / Grade 5 / Black Oxide
Family: NF5CB
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Technical Specifications
Thread Size
5/16"-18
Thread Type
Coarse
Material
Steel
Grade
Grade 5
Finish
Black Oxide
Standard
ASME B18.2.2
Country of Origin
Import
Thread Pitch
18 TPI
Thread Class
Coarse
Thickness
17/64"
Tensile Strength
120 ksi (827 MPa)
Hardness
C25-C34
RoHS Compliance
RoHS Compliant
Measurement System
Inch
SKU
31NF5B-300