#15 Construction Lag Screw Exterior Coated Torx/Star Drive Heavy Duty Structural Lag Screw - Modified Truss Washer Head

Only the #15 x 6" is available in 50 Count Packages

✔#15 Screw Dimensions - ~.202 Shank Diameter - ~.275 Thread Diameter - ~5/8 Head Diameter - Use T-30 Torx Bit
✔Manufactured from High Quality Heat Treated Steel, Triple Coated, ACQ Treated Lumber Compatible
✔Type 17 Notched Extra Sharp Point for Quick Starts without "Walking", Reduces Need for Pre-Drilling
✔Corrosion Resistant Lag Screws Passed the 1500 Hour Salt Spray Test Without Coating Failures
✔Great Screw for Decking, Fencing, Roofing, Framing, Timber Frame or Post, and Beam
✔Construction Lag Screws Far Exceed Standard Lag Bolts in Shear Compression Forces
✔Deep, Wide, Sharp Screw Threads for Maximum Holding Power, Excellent for Hard and Soft Wood
✔Deep Torx/Star Drive Head Reduce "Cam-out" While Driving Screw
✔Knurled Screw Shoulder Lowers Drill Torque Requirements, High Quality Threads Cut Clean and Easy


#15 x 3-1/2" Construction Lag Screws with a 5/16" thread diameter and 5/8" modified truss head for enhanced compression. Designed for T30 Torx/Star drive bits, these exterior-coated screws are suitable for hard and soft woods, chipboard, and tough materials. Ideal for construction, they offer strong, reusable fastening with high torque transfer. Includes 100 screws.

The #15 x 2" Structural Lag Screw Does not Have a Knurled Shoulder

Screw Engineering Specs:
Average Shear Strength of #15 Shank ---920 lbf
Average Pull-Out Strength: 1.5" (Thread Length) - 375 lbf / 2" (Thread Length) - 500 lbf / 3" (Thread Length) - 750 lbf / 3.5" (Thread Length) - 875 lbf
(Screw Pull-Out is Calculated by Screws installed in the Side Grain of a Main Member - Southern Pine)

Installation Instructions  Available Here

Screw Size	Package Size	Approximate Screw Count	Torx Bit Size	Interior/Exterior
15 x 2"	100 Count	100	T30	Exterior
15 x 2"	Full Box	1000	T30	Exterior
15 x 2-1/2"	100 Count	100	T30	Exterior
15 x 2-1/2"	Full Box	850	T30	Exterior
15 x 3"	100 Count	100	T30	Exterior
15 x 3"	Full Box	500	T30	Exterior
15 x 3-1/2"	100 Count	100	T30	Exterior
15 x 3-1/2"	Full Box	500	T30	Exterior
15 x 4"	100 Count	100	T30	Exterior
15 x 4"	Full Box	500	T30	Exterior
15 x 5"	100 Count	100	T30	Exterior
15 x 5"	Full Box	500	T30	Exterior
15 x 6"	100 Count	100	T30	Exterior
15 x 6"	Full Box	300	T30	Exterior