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Underlayment Screws

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top MTH Series

#7 Underlayment
Wood Underlayment-to-Wood

Features:

  • #2 Square drive - BIT2S
  • High-Low threads
  • Nibs under the head for easier countersinking
  • Sharp point
  • Trim head
  • Available with yellow zinc dichromate and gray phosphate coatings
  • Curved collation

  
  Carton Quantity PRO
200		 PRO
200S
Model Length Coating Standard Half Count    
MTHZ1S 1" Yellow Zinc 2500 -   x
MTH114S 1 1/4" Gray Phosphate 2500 1000 x x

Order Half Count cartons with an "HCK" prefix before the model number, example: HCKMTH114S

top CB3BLG Series

#10 Tile Underlayment
Fiber-Cement Board-to-Wood

Features:

  • #3 Undersized square drive - BIT3SU
  • Coarse threads
  • Nibs under the head for easier countersinking
  • Type 17 point
  • .375" Ribbed wafer head
  • C-3 coating
  • Straight collation

  
  Carton Quantity PRO
LDH		 PRO
CGB
Model Shank Size Length TPI Point Type Standard Half Count    
CB3BLG114S 10 1 1/4" 10 Type 17 1500 500 x x
CB3BLG112S 10 1 1/2" 10 Type 17 1500 500 x x
CB3BLG158S 10 1 5/8" 10 Type 17 1500 500 x x
CB3BLG134S 10 1 3/4" 10 Type 17 1500 - x x

Screws meet the requirements of ANSI 108
TPI = threads per inch

top CB3BLGHL Series

#9 Tile Underlayment
Cement Board-to-Wood

Features:

  • #3 Undersized square drive - BIT3SU
  • High-low threads
  • Nibs under the head for easier countersinking
  • Type 17 point
  • .375" Ribbed wafer head
  • C-3 coating
  • Straight collation

  
  Carton Quantity PRO
LDH		 PRO
CGB
Model Shank Size Length TPI Point Type Standard Half Count    
CB3BLGHL114S 9 1 1/4" 15 High-Low Sharp 1500 500 x x
CB3BLGHL158S 9 1 5/8" 15 High-Low Sharp 1500 500 x x

Screws meet the requirements of ANSI 108
TPI = threads per inch

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