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The Mini-Coupler is 1" wide and fits from 1.65" OD to 2" OD Tube. The Mini-Coupler uses a 3/8″ × 3/4" long Grade 5 bolt with a Belleville washer and a Nyloc nut. The Mini-Coupler has a safe working load of 330 Pounds.
3/8″ × 3/4" long Grade 5 bolt with a Belleville washer and a Nyloc nut.
To avoid breakage, do not use excessive force when tightening screws or bolts. Do not use any broken, cracked or worn out items.