GS Products supply a range of latch spring replacement kits for alloy steel red painted hooks, up to 7 tonnes.
Crosby® S-4320 Hook Latch Kit - Olsen Chain & Cable
Page 1 of 5 Spare Parts - Common crane components and parts
Crosby® S-4320 Latch Kit, 5 Pack
Premier Hook Latches Crosby Group Products
Latch Kits Rigging Warehouse
LRSS Stainless Steel Hand Retractable Spring Plungers, Lock-Out, with Knurled Handle
Safety Latch Replacement Kit
Locks and Keepers - Essential Replacement Window Parts — Window
Hook Latch Repair Kit for 3 Ton Cable Hoist #6000-15
Prime-Line Mortise Style Sliding Screen Door Hook Latch A 121 - The Home Depot
Heavy Duty Spring Latch Assembly with Looped Handle
Schlage Bright Brass Steel Dead Latch 1 pk - Ace Hardware
Stake Body Spring Loaded Latch, Right Hand #B2590RH
J-hook with latch, available in various sizes at MItari