William Hackett UNC Offshore Swivel Hoist Ring

The HA offshore swivel hoist ring (UNC) is a bolt-on load attachment product specifically designed for the lifting and handling of loads in extreme, corrosive environments. It can rotate 360° around the bolt axis, as well as pivot 180°, allowing the hoist ring to orientate to the appropriate angle of lift, mitigating the risk of damage. The HA offshore swivel hoist ring (UNC) is suitable for both top and side mounting, and maintains its full working load limit even when pulled at 90°.

Key Features

• Standards: designed and manufactured in accordance with EN1677-1, ASME B30.26 and NORSOK R-002. L7 bolts manufactured in accordance with ASTM320/A320. Sherardised in accordance with BSEN ISO 17668:2016.
• Product sizes: available in sizes 1/2” to 2-1/2” with working load limits from 2200 lbs to 44550 lbs.
• Material and hardness: all load bearing components are manufactured from alloy steel, quenched and tempered. The swivel hoist ring body and bail feature a maximum hardness range of 35 - 40 HRC, whilst the L7 bolts feature a maximum material hardness of 32 HRC.
• Zinc sherardised: the swivel hoist ring body, bail, and L7 bolt are zinc sherardised, delivering optimal corrosion resistance.
• Temperature: operational temperature range of -40°C to +200°C without reduction in working load limit.
• Testing: load-rated parts subject to 100% magnaflux crack detection following heat treatment. HA offshore swivel hoist rings proof tested to 2.5 times working load limit, and fatigue rated to 20,000 cycles at 1.5 times working load limit.
• Average impact energy (Charpy): 27 Joules minimum impact resistance at -101°C (for L7 bolts) and 42 Joules minimum impact resistance at -20°C (for swivel hoist ring body and bail).
• Extended bolts: available upon request.
• Safety factor: 4 : 1.

Specifications

All dimensions are imperial and in inches.

Part Code	WLL (lbs)	Thread Size	A	B	C	D	E	F	G	H	I	J	K	L	Torque (Nm)	Mass (lbs)
OS-H20-UNC12G	2200	1/2”	1.97	2.17	1.85	0.79	5.16	3.23	0.51	0.50	0.55	2.13	0.39	0.94	100	2.20
OS-H20-UNC16G	3960	5/8”	1.97	2.17	1.85	0.94	6.10	3.23	0.51	0.62	0.55	2.13	0.39	0.94	150	2.20
OS-H20-UNC20G	5940	3/4”	2.56	2.60	2.30	1.18	7.60	4.13	0.63	0.75	0.71	2.72	0.47	1.18	250	4.41
OS-H20-UNC22G	7425	7/8”	2.56	2.60	2.30	1.42	7.83	4.13	0.63	0.88	0.71	2.72	0.55	1.42	300	4.63
OS-H20-UNC26G	9900	1”	2.56	2.60	2.30	1.42	7.83	4.13	0.63	1.00	0.71	2.72	0.55	1.42	400	4.63
OS-H20-UNC32G	15480	1-1/4”	3.43	3.15	3.25	1.89	10.49	5.71	0.98	1.25	1.06	3.58	0.67	1.81	500	13.23
OS-H20-UNC36G	24750	1-1/2”	4.33	3.94	3.70	2.44	12.58	7.32	1.30	1.50	1.06	3.46	0.75	2.76	800	26.46
OS-H20-UNC48G	39680	2”	4.33	3.94	3.86	2.99	13.03	7.32	1.30	2.00	1.89	3.46	0.75	2.76	800	27.34
OS-H20-UNC56G	43560	2-1/4”	4.84	4.33	4.33	3.31	14.29	7.83	1.38	2.25	2.20	3.82	0.75	3.15	800	36.38
OS-H20-UNC64G	44550	2-1/2”	4.48	4.33	4.33	3.74	14.72	7.83	1.38	2.50	2.52	3.82	0.75	3.15	800	37.48