Offshore Products

HA MASTER LINKS OS+ Zinc Tough

The HA range of Grade 8 master links and quad assemblies are global industry leaders and are widely used for offshore rigging as well as container lifting sets.

Certified to International Standards: DNV 2.7-1, DNV 2.7-3, BSEN ISO 10855-2, EN1677-4, ASME B30.26 and API-2CCU – Aug.2017.

For information regarding proof testing guidance, please email liftingsales@williamhackett.co.uk

Zinc-ToughTM Technology

The Zinc-ToughTM Technology HA range of Grade 8 Master Links and Quad Assemblies provide superior protection from Hydrogen embrittlement and stress corrosion cracking - making them perfect for lifting operations in offshore environments.

Hydrogen embrittlement is the process by which metals such as steel become brittle and fracture under stress due to the introduction and subsequent diffusion of hydrogen into the metal - it can also be described as hydrogen assisted stress cracking and is particularly prevalent in the extreme conditions of the offshore environment where corrosion is a consistent threat. William Hackett and McKinnon Chain combined their technical knowledge and worked alongside a wide range of stakeholders, including several major oil and gas operators, to develop Zinc ToughTM Technology.

This unique manufacturing process delivers a master link with the tensile strength requirements to deliver a 5:1 safety factor with a hardness value as low as 34-36 HRC. The DNV charpy impact values are achieved at -40C, making the links ability to withstand a shock load at any operating temperature.

SPECIFICATIONS - Metric

DNV Type Approval TAS0000333

Part
Code
Description A
mm
B
mm
C
mm
WLL
t

MPF
kN

MBL
kN

Mass
Kg
330.220.ZT+ HA22ML OS+ ZT 22.0 270 140 7.00 172 343 2.28
330.250.ZT+ HA25ML OS+ ZT 25.5 270 140 9.30 229 456 3.11
330.280.ZT+ HA28ML OS+ ZT 28.0 270 140 14.50 356 711 3.78
330.320.ZT+ HA32ML OS+ ZT 32.0 270 140 19.00 466 932 5.02
330.360.ZT+ HA36ML OS+ ZT 36.0 270 140 26.00 638 1275 6.46
330.400.ZT+ HA40ML OS+ ZT 40.0 280 155 30.50 749 1496 8.46
330.450.ZT+ HA45ML OS+ ZT 45.0 320 175 40.00 981 1962 12.18
330.500.ZT+ HA50ML OS+ ZT 50.0 350 195 51.00 1251 2502 16.54
330.650.ZT+ HA65ML OS+ ZT 65.0 410 220 75.00 1840 3679 33.02
330.750.ZT+ HA75ML OS+ ZT 75.0 450 250 100.00 2453 4905

48.98

SPECIFICATIONS - Imperial

DNV Type Approval TAS0000333

Part
Code
Description A
inches
B
inches
C
inches
WLL
lbs

MPF
lbs

MBL
lbs
Mass
lbs
330.220.ZT+ HA22ML OS+ ZT 7/8"  10-3/4"  5-5/8"  15,432  38,667  77,109  5.03
330.250.ZT+ HA25ML OS+ ZT 1"  10-3/4"  5-5/8"  20,503  51,481  102,512  6.86
330.280.ZT+ HA28ML OS+ ZT  1-1/8"  10-3/4"  5-5/8"  31,967  80,031 159,838  8.33
330.320.ZT+ HA32ML OS+ ZT  1-1/4"  10-3/4"  5-5/8"  41,887  104,760  209,521  11.07
330.360.ZT+ HA36ML OS+ ZT  1-7/16"  10-3/4"  5-5/8"  57,320  143,427  286,630  14.29
330.400.ZT+ HA40ML OS+ ZT  1-9/16"  11"  6"  67,240  168,381  336,313  18.65
330.450.ZT+ HA45ML OS+ ZT  1-3/4"  12-3/4"  7"  88,184  220,537  441,074  26.85
330.500.ZT+ HA50ML OS+ ZT  2"  14"  7-3/4"  112,436 281,235  562,470  36.46
330.650.ZT+ HA65ML OS+ ZT 2-9/16" 16-9/64" 8-21/32" 165,347  413,647  827,070 72.80
330.750.ZT+ HA75ML OS+ ZT 2-61/64" 18" 10" 220,462  551,455 1,102,685 108.00
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