5/16"-18 Grade 8 Hex Nylon Insert Lock Nuts Phos & Oil

Product Description

Part Number: 31CNNECP
Diameter/Pitch: 5/16"-18
Grade: Grade 8
Finish: Phosphate & Oil
Coarse / Fine Threads: Coarse
Wrench Size: 1/2"
Click Here for Tech Drawing

BoltsandNuts.com

5/16"-18 Grade 8 Hex Nylon Insert Lock Nuts Phos & Oil

SKU: 31CNNECP

Product Description

Part Number: 31CNNECP
Diameter/Pitch: 5/16"-18
Grade: Grade 8
Finish: Phosphate & Oil
Coarse / Fine Threads: Coarse
Wrench Size: 1/2"
Click Here for Tech Drawing

B&N Pro eligible item. Save 10% when you join Pro. Learn more.

Pack Size

1

$0.23/pc

Popular

150

$0.17/pc

300

$0.14/pc

750

$0.11/pc

Best Value

3000

$0.08/pc

$0.23

B&N Pro $0.00 Member Price

(Shipping $8.95) Add [amount] more for FREE SHIPPING

Free QR Storage Label Included with Most Items

Scan the QR and it will lead to that exact item for easy reordering!

30 Day Returns

Accepted on Most Items. Learn More

Diameter Pitch	5/16"-18
Finish	Phosphate & Oil
Thread Class	2B
Width Across Flats	0.500" (1/2")
Major Diameter	0.312"
Tensile Stress Area	0.0524 sq in
Lock Type	Nylon Insert Lock Nuts
Locking Type	Nylon Insert (Prevailing Torque)

Grade	Grade 8
Material	Medium carbon alloy steel, quenched and tempered
Threads Per Inch	18 TPI
Width Across Corners	0.577" max
Proof Load	7,860 lbf
Hardness	Rockwell C33–C39
Head Type	Hex
Inch Metric	Inch

Grade Material	Grade 8
Coarse Fine Threads	Coarse
Wrench Size	1/2"
Head Height	17/64"
Proof Stress	150,000 psi
Head Marking	J995 Grade 8 marking
Nominal Size	5/16"
Max Temperature	250°F (nylon insert limit)