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Flat Head Sleeve Anchors (3/8" x 6") - $60 (Ronkonkoma)
856 Johnson Ave
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Material and Finish: Carbon steel with zinc plating for corrosion resistance in dry to mildly damp indoor/outdoor environments (not for highly corrosive areas; stainless steel options available).
Load Capacity: Ultimate tensile strength ~3,000–4,000 lbs. in 4,000 PSI concrete; shear strength ~4,000–5,000 lbs. (varies by base material). Apply a 4:1 safety factor for working loads (~750–1,000 lbs. safe pullout). Meets ASTM E-488 and ICC-ES standards.
Expansion Mechanism: Internal expander sleeve with anti-rotation slots prevents spinning; collar expands on the first turn of the nut for immediate grip.
Installation: Pre-assembled with nut; drill hole, insert through fixture, torque to 20–25 ft-lbs. (Phillip's drive, #3 bit). Minimum embedment 2-1/2"–3"; maximum fixture thickness ~4-3/4". No exact hole depth needed.