5/16"-18 Serrated Hex Flange Locknuts / Grade 8 / Black Phos
$269.39
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Product Description
5/16"-18 Serrated Hex Flange Locknuts / Grade 8 / Black Phos
Specifications
| Material | Alloy Steel |
|---|---|
| Finish | Phosphate |
| Grade | Grade 8 |
| Size | 5/16"-18 |
| Thread Pitch | 18 TPI |
| Thread Class | Coarse |
| Thickness | 0.281 |
| Hardness | C33-C39 |
| Tensile Strength | 150 ksi (1034 MPa) |
| RoHS Compliance | RoHS Compliant |
| Measurement System | Inch |
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.
Serrated Hex Flange Locknuts / Grade 8 / Black Phos
Family: NR8BK
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Technical Specifications
Thread Size
5/16"-18
Thread Type
Coarse (UNC)
Material
Alloy Steel
Grade
Grade 8
Thread Pitch
18 TPI
Thickness
0.281
Tensile Strength
150 ksi (1034 MPa)
Hardness
C33-C39
SKU
31NR8B-1500