Adams Rite 4015-18-IB Threshold Bolt

Adding  the  4015  bolt  to  a  pivoted  bolt  MS1850S  deadbolt allows Maximum Security for pairs of doors by the turn of a single key. Simultaneously dropping a stainless steel hexbolt into the threshold and pivoting the massive MS1850S bolt into the mating door's stile, the two-point lock secures the entire double door entrance. The 4015 threshold bolt is harnessed to the rear of the pivoted bolt. It may be added to any basic MS1850S deadbolt. 

- ANSI/BHMA Type E8241 (Grade 1)

Operation:

 360 degree turn of key or thumbturn in basic MS® lock throws counterbalanced bolt into opposite door and drop-bolt into threshold. Key can be removed only when bolts are in a positively locked or unlocked position. 

Cylinder Height:

 Standard threshold bolt rod is sufficient for a cylinder height up to 53-7/16 inches above the floor. It is  fully threaded and can be cut off for low cylinder heights. 

Adjustment:

 Exact adjustment of threaded rod to cylinder height is locked in place by hexagonal threshold bolt. 

Strike:

 For drop-bolt, a 1/2" diameter hole in metal/ aluminum threshold is suitable, or for non-metal installations a 4005 strike is available. 

Threshold Bolt:

 Hexagonal 3/8" flat to flat. Made of stainless steel 

*** MS1850S Lock not included with 4015-18 Threshold Bolt ***