5/16"-18 Serrated Hex Flange Locknuts / Grade 8 / Black Phos / Phosphate
- Steel
- Grade 8
- Phosphate
- 18 TPI · Coarse
- ASME B18.2.2
$134.69
$0.898 / pc
Package of 150
Volume pricing: the bulk box price per piece is shown above. Need more? Request a quote →
Net 30 terms for approved accounts. Apply for wholesale →
Product Description
5/16"-18 Serrated Hex Flange Locknuts / Grade 8 / Black Phos / Phosphate
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.
$134.69
$0.898/pc
Serrated Hex Flange Locknuts / Grade 8 / Black Phos
Family: NR8BK
Select size and quantity, then add to cart
Loading filters...
|
Loading family products...
|
5/16"-18 Serrated Hex Flange Locknuts / Grade 8 / Black Phos / Phosphate
SKU: 31NR8B-150
Technical Specifications
Thread Size
5/16"-18
Thread Series
UNC
Thread Pitch
18 TPI
Material
Steel
Grade
Grade 8
Finish
Phosphate
Standard
ASME B18.2.2
Country of Origin
Import
Thickness (in)
0.281
Tensile Strength
150 ksi (1034 MPa)
Hardness
C33 - C39
Nut Type
Flange Lock
Measurement System
Inch
Width Across Flats
1/2"
SKU
31NR8B-150
https://www.ecomfasteners.com/products/5-16-18-serrated-hex-flange-locknuts-grade-8-black-phos · Printed