Green Pin® Heavy Duty Master Link

Weldless Heavy Duty Master Link (grade 8)
  • Extremely safe: fully forged & completely weldless
  • Smooth surface: less wear to slings
  • 120 degrees lifting angle indicator
  • Conforms to offshore certification requirements
  • Available from stock, fast delivery

The Green Pin® Heavy Duty Master link is a grade 8 master link for heavy duty applications. By using a unique innovative production method, the master links are fully forged as a single piece, without any welding whatsoever. As a result, the master links meet the most stringent safety- and performance requirements and will keep working reliably in even the harshest environments. The master links are painted silver with a green mark indicating a maximum lifting angle of 120 degrees, making it easy for riggers to spot potentially unsafe operations. The exceptionally smooth surface reduces wear on counter components such as slings and shackles. To rule out cracks, each Master link is submitted to several non-destructive tests before shipping. The consistent Charpy-V Value of at least 42 Joule throughout the entire Master link, makes it compliant with offshore certification requirements. All products are available from stock and ready for fast delivery. The master links are available in a range with a working load limit from 131 to 400 ton.

Product details
  • Productcode
  • Material
    alloy steel, Grade 8
  • Safety factor
    MBL equals 5 x WLL
  • Finish
    painted silver and green
  • Temp. range
    -40°C up to +200°C
  • Certification
    • 2.1
    • 2.2
    • 3.1
    • MTCa
    • MPIb
    • USb
    • CE
Technical specifications in
To download a CAD drawing, click on a product capacity below
Article code
working load limit (ton)
working load limit (ton)
diameter (inch) A
diameter (mm) A
length inside (inch) B
length inside (mm) B
width inside (inch) C
width inside (mm) C
Nett weight KG
Nett weight LBS
HDGPML0131 131 90 460 300 77.0
HDGPML0131 131 3 1/2 18 1/8 11 13/16 170
HDGPML0157 157 100 500 300 102
HDGPML0157 157 4 19 11/16 11 13/16 225
HDGPML0250 250 115 600 400 172
HDGPML0250 250 4 1/2 23 5/8 15 3/4 379
HDGPML0300 300 115 600 300 163
HDGPML0300 300 4 1/2 23 5/8 11 13/16 359
HDGPML0400 400 115 490 250 132
HDGPML0400 400 4 1/2 19 9/32 9 27/32 291

Frequently Asked Questions

Is it allowed to weld on Green Pin® lifting equipment?

No! Green Pin® products are treated with well designed heat treatment, which results in a certain Minimum Break Load and other specific mechanical properties. These properties will be destroyed by the heat of welding. It even can initiate extreme hard spots and initial cracks, that will decrease the strength and fatigue life dramatically. An exception is made for Green Pin® GH and PAS products, as these need to be welded to a surface to function. For these items, please follow the instructions that are available at Green Pin® sales.

FAQ-Reference PI-07-02.

Where can I find the Working Load Limit table?

You can find the Working Load Limit tables for Chain Fittings here: