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5/8"-18 Helicoil Insert for Metal 18-8 Stainless Steel UNF

5/8"-18 Stainless Steel E-Z Coil Helical Threaded Inserts

Internal Thread Size: 5/8"-18

5/8"-18 Stainless steel helical inserts are used to reinforce and repair tapped holes in soft metals.

  • Feature strong, corrosion resistant internal threads
  • Engineered to withstand temperatures up to 800 degrees Fahrenheit
  • The diameter of a helical insert will be larger than the tapped hole (before install)
  • Once properly installed the insert diameter reduces allowing the helical insert to thread the hole
After installation, E-Z Lok coil inserts will stay firmly in place as the radial pressure of the spring releases.

Stainless Steel Helical Threaded Inserts are ideal for applications requiring additional corrosion resistance, as well as automotive, food, beverage, and other clean-critical applications.

Sizes Listed As:
Internal Thread Size x Insert Length
D = Diameter, (ex #4-40 x 2D is 2 times as long as the Insert's Diameter)

EZ-LOK
Part # 		Internal
Thread 		Length Drill Size EZ-LOK
Drive Tool
#31410 5/8"-18 1D (0.625) 21/32" M1018
#31415 5/8"-18 1.5D (0.938) 21/32" M1018
#31420 5/8"-18 2D (1.250) 21/32" M1018
This item qualifies for FREE SHIPPING on orders $250+
Select Products Below See Product Specifications
NA = "Not Sold In Single Quantity"

Size
Select Package Quantity
SubTotal
Helicoil Insert 18-8 SS Unified US - 5/8-18 x 1D (0.625)
SKU #11380002
Helicoil Insert 18-8 SS Unified US - 5/8-18 x 1D (0.625)
SKU #11380002
1
 $5.27 (5.27/ea)
25
 $130.50 (5.22/ea)
100
 $514.00 (5.14/ea)
1000
 $5,120.00 (5.12/ea)
Subtotal: $0.00 /
Helicoil Insert 18-8 SS Unified US - 5/8-18 x 1.5D (0.938)
SKU #11380012
Helicoil Insert 18-8 SS Unified US - 5/8-18 x 1.5D (0.938)
SKU #11380012
1
 $5.55 (5.55/ea)
25
 $137.75 (5.51/ea)
100
 $543.00 (5.43/ea)
1000
 $5,420.00 (5.42/ea)
Subtotal: $0.00 /
Helicoil Insert 18-8 SS Unified US - 5/8-18 x 2D (1.25)
SKU #11380022
Helicoil Insert 18-8 SS Unified US - 5/8-18 x 2D (1.25)
SKU #11380022
1
 $6.92 (6.92/ea)
25
 $171.25 (6.85/ea)
100
 $680.00 (6.8/ea)
1000
 $6,780.00 (6.78/ea)
Subtotal: $0.00 /
Product Specifications
Color
Silver
Corrosion Resistant
Yes
Diameter
5/8"
Drill (Hole) Size
21/32"
Drive Style
E-Z Lok Drive Tool
Free Running OD
Max 0.706 - Min 0.694
Grade
18-8
Head Style
No Head
Internal Thread
5/8"-18
Material
Stainless Steel
Pilot Hole
21/32"
Product Type
Thread Insert - Coil
System of Measurement (Unit)
Inch
Tap Size
STI 5/8"-18
Thread Direction
Right Hand
Thread Pitch (Count)
18 Per Inch
Thread Standard
UNF
Thread Type
Fine
Tolerance (IFI)
Actual measurements may vary slightly +/- depending on production run within IFI Tolerances

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