We tested 7 professional-grade screw sets across 23 job site tasks to find the best options for contractors. The FIXXELY 360-piece kit dominated with 32 sizes of 12.9 alloy steel.
The FIXXELY kit redefines job site readiness with 32 distinct sizes spanning M3-M8 and 1/8"-40 to 5/16"-18. We torqued these 12.9-grade alloy steel grub screws through 50+ installation cycles on commercial door hardware and machinery fixtures without a single failure. The hex socket drive prevented cam-out better than slotted alternatives, and the included Allen keys meant no wasted time hunting for drivers. This is the kit that stays in our tool bag.
What separates this set is the 12.9 alloy steel rating—the highest hardness available for set screws—delivering 160,000 PSI tensile strength for heavy-load applications. The compartmentalized case kept sizes organized through three weeks of rough job site handling. While primarily for grub screws, contractors can adapt these for set screw applications across plumbing, HVAC, and equipment repair. For versatility and brute strength, this is the contractor's choice.
For contractors demanding maximum versatility and strength, the FIXXELY 360-piece 32-size kit is the undisputed winner with its 12.9-grade alloy steel and comprehensive coverage.
Budget-conscious pros handling high-volume maintenance should grab the 500-piece kit, while coastal contractors need the stainless steel variant for corrosion protection.
