The 4187HD is a extremely tough ratchet mount made for the harshest of environments. The Standard (male) 1" x 14 thread mount also has a special cable slot which eliminates the need to remove most factory-installed connectors. Mounting dimensions are; Bolt holes: 5/16"  dia., 3" x 1½" on center.

Shakespeare 4187 Stainless Steel Heavy Duty Ratchet Mount

Shakespeare 4187 Heavy Duty Stainless Steel 4 Way Ratchet Mount.
SS4187HD   MAN#: 4187-HD   ID#: 4100
Our Price: $49.95
Availability: In Stock
Condition: Brand New
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Product Accessories for Shakespeare 4187 Stainless Steel Heavy Duty Ratchet Mount

Shakespeare Shim Kit for 4186 & 4187 Rachet Mount. Kit includes Four (4) Shims, two (2) with front/back slope and two (2) with side/side slope. Each shim adds a half-notch (5°) tilt.
SS414
$9.95