We need 10” do you sell those

Amazon: I'm supposed to know your products?

What is the sheer force and bending psi specs for these?

Per their spec sheet, the bending yield is 187,300 PSI and the allowable faster strength 1215 lbf Tensile and 965 lbf Shear

why do i have to buy such a large quantity ?? why can't i get the 8 inch flathead in a 50 count >???

I always have big projects going. I am going to use a lot of them.

I have to put three 2x6 pressure treated together for a main beam in a crawl space under a house, will these fastners work or do you sugest another?

You will only need 3" deck screws or drywall screws to put the beam together. I would not use the head lock screw. Probably will be 3 2x6 put together. Stager your joints on the beam if your 2x6's are not long enough to span from baring to baring.

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🔩 Fasten smarter, not harder—lock in strength and speed with HeadLOK!

READY TO GO - Includes a free Spider Driver bit in every package—everything you need to get started immediately.
BUILT TO LAST - Corrosion-resistant finish ensures your work stands the test of time, ACQ approved for treated wood.
CAM OUT NOT HERE - Patented Spider Drive design virtually eliminates cam-out for flawless fastening every time.
UNMATCHED STRENGTH - Nationally code-compliant with shear values surpassing standard lag screws for ultimate durability.
EFFORTLESS INSTALLATION - No predrilling needed—zips right in to save you time on every project.

The FastenMaster FMHLGM412-250 HeadLOK is a 4.5-inch heavy-duty flathead fastener designed for professional-grade wood projects. It offers superior shear strength exceeding 3/8-inch lag screws, requires no predrilling, and features a patented Spider Drive to prevent cam-out. With corrosion resistance approved for treated wood and a free Spider Driver bit included, this 250-count pack delivers reliable, efficient fastening for long-lasting results.

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₲4708200

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Manufacturer	FASTENMASTER
Part number	OMG - 5667704
Item Weight	4.54 Kilograms
Product Dimensions	24.13 x 19.05 x 25.4 cm; 4.54 kg
Item model number	FMHLGM412-250
Size	4 Inch - 1/2 Inch
Color	Black
Finish	black
Material	Other
Item Package Quantity	1
Number Of Pieces	250
Head Style	Flat
Measurement System	Imperial
Specific uses	wood
Batteries Included?	No
Batteries Required?	No

FastenMaster FMHLGM412-250 HeadLOK Heavy-Duty Flathead Fastener, 4-1/2 Inches, 250-Count

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