Rigging Hardware 3.5mm quick link stainless steel 304 snap hook carabiner C hook

Product description and pictures

THREADED LATCH. These safety chain hooks are equipped with a threaded end and hex nut to provide enhanced security when connecting your safety chains to your trailer hitch.
RELIABLE STRENGTH. With high-strength steel construction, these threaded hooks are rated for 1,760 lbs. work load limit.
READY TO TOW. Threaded trailer safety chain hooks are easy to install. Simply unthread the hex nut and link the hook onto the trailer hitch loop before towing. Then, tighten the nut using a wrench.
VERSATILE. Safety chain hooks are great for a wide variety of uses, beyond towing. These 5/16-inch diameter snap hooks can be used to attach cargo straps or ropes or as hand winch attachment hooks for a quick connection.
CORROSION-RESISTANT. To promote long-lasting use and dependable safety, these threaded carabiner safety chain hooks are finished with a durable zinc plating. They resist rain, dirt, snow, mud and other corrosive elements.

For our normal packing:
 

Firstly, we put item into poly-bags, usually it is 5pcs/10pcs per poly-bag, according to the size of the item.
Second, we put the item with poly-bags into cartons, usually 500pcs,or 1000pcs into one carton.
And then, cartons packed into wooden pallet if need ocean or air cargo shipping.