Replace your tired hammer t-bolt with a part built for serious tool duty — factory-fit dimensions, reinforced construction, no compromises. Verified for Rotary for Bosch applications. Cross-references factory part number 1613490002. Watch for these symptoms when the existing part starts to fail: missing washers, corroded heads, or torque that won't hold. Manufactured to factory-equipment dimensions and tolerances so fitment is true the first time — no shimming, no filing, no adapters. Before install, photograph the existing layout, confirm the existing part number on your worn unit, and match physical dimensions and mounting pattern. Follow your service manual sequence and torque values for a clean, long-lasting repair. Keep your equipment running through another full season of work without the wait and cost of factory replacement. Ships ready to install — no modifications required. Order with confidence and get back to work.