ITEM: 5/811 Thread, 7/8 Hook Length, 1.124/1.125 Body Diam, 23/4 Body Length, Cap Screw Hook Clamp Assembly JERGENS. MANUFACTURER: JERGENS. BRAND: Jergens. MANUFACTURER PART: 41906. CATEGORIES: Maintenance, Repair and Operational (MRO) Supplies. Clamps & Clamping Components. Fixturing Clamps. Hook Clamp Assemblies. N/A. KEYWORDS: JergensClampsClampingComponentsFixturingClampsHookClampAssembliesNA.