Monster Fastener Hot Dip Galvanized Grade 2 / A307 Steel Coarse Thread Carriage Bolts Size:1/2"-13 x 3" (25 pcs) 729 kcal/kg

729 kcal/kg

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For use in ponds of 50 to 600 gallons

97% L-Carnitine (min)* 35 mg/kg – Total Microorganisms (Pediococcus Acidilactici) (min)* 3 mil CFU/gram –

Not for use on dichondra or bentgrass lawns

Monster Fastener Hot Dip Galvanized Grade 2 / A307 Steel Coarse Thread Carriage Bolts Size:1/2"-13 x 3" (25 pcs) 729 kcal/kgA carriage bolt has a domed or countersunk head, and the shank is topped by a short square section under the head. The square section grips into the part being fixed (typically wood), preventing the bolt from turning when the nut is tightened. Diameter: 3 8" Length: 4" Material: Steel Finish: Hot Dip Galvanized Head Style: Carriage Thread Size: 16 (Coarse) Thread Length: Full Hardness: Grade 2 A307 Type: Carriage Bolt Square Depth: 7 32" Diameter: 3