Replacement sex-nut thru-bolts for Tell 500, 600, and 900 series door closers, sized for 1-3/4" (44 mm) thick doors. Use instead of wood or metal screws when the closer must be through-bolted to the door for security, fire-door rating, or hollow-door installations. Duronotic (dark bronze) finish. Sold as a 4-bolt pack - one pack covers one closer installation.

• Pack of 4 sex nuts and machine screws (one closer kit)
• For 1-3/4" (44 mm) thick doors (Tell option SNB1)
• Duronotic (DURO) dark bronze finish
• Fits Tell 500, 600, and 900 series door closers
• Use for through-bolt mounting in place of wood/metal screws
• For 1-3/8" doors, see Tell SNB2 (parts DC100089 / DC100203)