5/8" Hitch Pin & Coupler Lock Set Trimax
(Trimax Part #: TM-31)
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5/8" diameter hitch pin works for class III/IV 2" trailer hitch receivers. Coupler lock has a 7/8" span between the barbells for a snug fit.
Type A key which is spring loaded, 7 pin, high security key. It resists attempted drill outs. Both rugged and durable. Equipped with barrel style keys - wont ever bend or break.


    FitsHitch pin - Class III/IV 2 inch receivers
    Trailer couplers with a 7/8 inch span


    • Locks are keyed alike - includes four keys
    • Patented 1/4 turn technology that cannot be false locked
    • Equipped with a internal O-ring and protective cap keeps water, grime and dirt out of the locking mechanism to ensure years of use
    • Coupler lock has a 1/4 inch diameter shaft
    • Knurling on lock heads adds style and grip
    • Made of solid forged machined steel


    TRIMAX Corporation is the world's leading lock manufacturer providing customers' high quality products through innovative design. A division of Wyers Products Group, TRIMAX produces more than 120 lifetime warranted security products spanning markets such as trailer and towing, power sports, marine, RV and bicycles. TRIMAX is headquartered in Centennial, Colorado and has been in business for more than 20 years. At the forefront of the security industry, TRIMAX stays in tune with market conditions, analyzing the demand for more security and producing products to meet that demand. TRIMAX offers more products keyed alike and cross-keyable products than any other competitor at no charge.

    "Lock it or Lost it"

    The above information has been provided by the Manufacturer, and we cannot guarantee the accuracy thereof or endorse the opinions expressed.