5/16-18 Finished Hex Nuts / Grade 8 / Zinc Yellow / Made in USA
SKU: 31NF8D-300 In Stock

5/16"-18 Finished Hex Nuts / Grade 8 / Zinc Yellow / Made in USA / DFAR Compliant

  • Steel
  • Grade 8
  • Zinc Yellow
  • 18 TPI · Coarse
  • ASME B18.2.2
$361.31 $1.20 / pc Package of 300
Package Quantity

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Product Description

5/16"-18 Finished Hex Nuts / Grade 8 / Zinc Yellow / Made in USA / DFAR Compliant

🇺🇸 Made in USA

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.

Finished Hex Nuts / Grade 8 / Zinc Yellow

Family: NF8DC

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Technical Specifications

Thread Size
5/16"-18
Thread Type
Coarse
Material
Steel
Grade
Grade 8
Finish
Zinc Yellow
Standard
ASME B18.2.2
Country of Origin
USA
Thread Pitch
18 TPI
Thread Class
Coarse
Thickness
17/64"
Tensile Strength
150 ksi (1034 MPa)
Hardness
C33 - C39
RoHS Compliance
On Request
Measurement System
Inch
SKU
31NF8D-300

Compliance & Certifications

DFARS Compliant Defense Acquisition Regulations

Need documentation? Request compliance certificates