CARRIAGE BOLT, 5" x 1/2" GRADE 8, yellow zinc
Carriage bolts work well in plates with 1/2" square holes. The carriage bolt head provides a low profile to reduce splatter back to the shooter.
Grade 8 bolts are HIGH TENSILE strength steel strong enough to resist the impact stress on steel target plates. Non GRADE bolts cannot withstand this stress resulting in bolt heads popping off. High Tensile strengths steel is NOT hardened steel and can be damaged by high velocity bullet impacts.
Grade 8 Carriage Bolts are hard to find at local hardware stores so be sure to have a few extra in the range bag.