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2 . FEATURES OF INTERIOR FINISHING SCREWS
Head shapes
H
PBH
H PPH
H
Phillips Bugle Head : used primarily for fastening drywall , plywood or insulation because it countersinks well
Phillips Pan Head : conventional head for general applications that provides low profile fastening
PTH
Phillips Truss Head : Large head and low profile used primarily for framing and attaching wire lath
PFH
H
Phillips Flat Head : used primarily in wood to countersink and seat flush to minimize splintering the wood
H
SFH
Square Flat Head : used primarily in wood to countersink and seat flush to minimize splintering the wood
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CH
PPCH
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CH
TPCH
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PFTH |
PWH |
WH / HHWH
HWH / HHWH
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Phillips Pancake Head : conventional head for general applications that provides low and flat profile |
Torx Pancake Head : conventional head for high torque applications that provides low and flat profile |
Phillips Flat Truss Head : lowest profile available for attaching metal to metal |
Phillips Wafer Head : Large head provides the bearing surface necessary to seat flush in soft materials |
Hex Washer Head / High Hex Washer Head Washer heads provides a bearing surface for the driving sockets |
Insert bit type |
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Standard drive recesses for most drywall screws
Phillips cross recess ( PH )
Head drive recess for tapping screws and wood screws
Torx ( TX )
Square head for wood selected screws screws in HNA for fastening wood boards
Square ( SQ )
Square Hexagon head for for selected wood screws exterior framing screws
Hexagon head ( HEX )
8 Interior finishing screw – Technical manual – 04 / 22 www . hilti . com