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GRK Fasteners UberGrade Structural Screws 100 ea CUP\TUB

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Directions

Suggested Uses: Lag screw alternative; carrying beam; playground equipment; ledger board; deck posts; stair rails. RSS Shear Test Results: Fastener: 5/16 inch x 2-1/2 inch; Avg. Ultimate Load: 903 lbf, 5/16 inch x 3-1/8 inch; Avg. Ultimate Load: 840 lbf, 5/16 inch x 4 inch; Avg. Ultimate Load: 1196 lbf, 5/16 inch x 5-1/8 inch; Avg. Ultimate Load: 1314 lbf), 5/16 inch x 6 inch; Avg. Ultimate Load: 1326 lbf. Please note the above stated values are ultimate load, tested after ASTM D 1761, wood to wood connection. For construction design purposes an applicable safety margin should be applied. For safety factor requirements in your area contact your local building official, architect or engineer. Test conducted in wood with a specific gravity 0.42. Climatek coated screws evaluated with 0.40 pcf ACQ-D and 0.40 pcf CA-B.

 

Description

5/16 inch x 4 inch. RSS. UberGrade. Speedy lag bolt alternative with immense drawing power! T-30 bit included. AC257 treated lumber approved. IBC/IRC code compliant ESR no. 2442. Zero stripping: Recessed star drive. No splitting: CEE thread. Low torque: W-cut thread. No pre-drilling: Engineered zip-tip. Stronger than 1/2 inch diameter lag screws & twice as fast! Star drive head has 6 points of contact to eliminate strip out. CEE thread enlarges hole to reduce splitting and allows material to settle neatly. Patented w-cut thread design and zip-tip easily penetrates material without drilling!

Warnings

Not Applicable

UPC

00772691122254