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WOOD SCREW 4IN HEX DRIVE 10PK WOOD SCREW 6IN HEX DRIVE 10PK Camo 0346100 Deck Screw
The SDWH timber-hex HDG screw a 0.276 in Dia hot dip galvanized screw suitable for heavy-duty marine and coastal applications. The SDWH timber-hex HDG screw has a SawTooth? point and oversized integral washer that makes for fast installations, no predrilling or separate washer needed. Speed up your next pile job by replacing 3/4 in and 5/8 in HDG bolt/washer/nut assemblies (two screws for one bolt in many conditions) with the new Strong-Drive? SDWH timber-hex HDG screw. The SDWH timber-hex HDG screw a 0.276 in Dia hot dip galvanized screw suitable for heavy-duty marine and coastal applications. The SDWH timber-hex HDG screw has a SawTooth? point and oversized integral washer that makes for fast installations, no predrilling or separate washer needed. Speed up your next pile job by replacing 3/4 in and 5/8 in HDG bolt/washer/nut assemblies (two screws for one bolt in many conditions) with the new Strong-Drive? SDWH timber-hex HDG screw. Camo Deck Screw, Thread Size: #7, 1-5/8 in L, Head Type: Trim, Drive Type: Star, Point Type: Type 17 Slash, Carbon Steel, ProTech-Coated, Multi-Purpose, Premium, Drive Size: T15, Includes: CAMO T15 Power Bit
WOOD SCREW STRUCT 2IN 12PK CNST SCREW WFR TAN NO8X1-1/4IN SCREW M/P FRAME/DECK 8X1-3/4IN
The Outdoor Accents structural wood screw reduces installation time by driving easily without predrilling. When combined with the patented, load-rated Outdoor Accents hex head washer, the solution delivers the decorative appearance of a bolt connection but with a much easier installation. The 2 in screw is ideal for use with 2X lumber and for adding style to any DIY project. Build every project faster, easier and stronger than ever with the wafer head construction screw from Simpson Strong-Tie?. Featuring a strong pull-through resistance, this versatile fastening solution is ideal for everything from cabinetry to framing to outdoor furniture and other home improvement projects. Its patented SawTooth? point eliminates the need to predrill and saves you time, while the six-lobe drive recess head makes driving secure and easy. And the wafer head construction screws Quick Guard? coating makes it suitable for both interior and exterior applications. GRK Fasteners R4 Framing and Decking Screw, Thread Size: #8, 1-3/4 in L, Drive Type: Star, Steel, Package Quantity: 100 PK, Multi-Purpose, Thread Length: 1.22 in, Drive Size: T-15, Applicable Materials: Cement, Fiber Board, Melamine, Particle Board, Plastic, Sheet Metal, Wood
CNST SCREW WFR TAN NO8X1-1/2IN CNST SCREW WFR TAN NO8X2-1/2IN CNSTRN SCREW WAFER TAN NO8X3IN
Build every project faster, easier and stronger than ever with the wafer head construction screw from Simpson Strong-Tie?. Featuring a strong pull-through resistance, this versatile fastening solution is ideal for everything from cabinetry to framing to outdoor furniture and other home improvement projects. Its patented SawTooth? point eliminates the need to predrill and saves you time, while the six-lobe drive recess head makes driving secure and easy. And the wafer head construction screws Quick Guard? coating makes it suitable for both interior and exterior applications. Build every project faster, easier and stronger than ever with the wafer head construction screw from Simpson Strong-Tie?. Featuring a strong pull-through resistance, this versatile fastening solution is ideal for everything from cabinetry to framing to outdoor furniture and other home improvement projects. Its patented SawTooth? point eliminates the need to predrill and saves you time, while the six-lobe drive recess head makes driving secure and easy. And the wafer head construction screws Quick Guard? coating makes it suitable for both interior and exterior applications. Build every project faster, easier and stronger than ever with the wafer head construction screw from Simpson Strong-Tie?. Featuring a strong pull-through resistance, this versatile fastening solution is ideal for everything from cabinetry to framing to outdoor furniture and other home improvement projects. Its patented SawTooth? point eliminates the need to predrill and saves you time, while the six-lobe drive recess head makes driving secure and easy. And the wafer head construction screws Quick Guard? coating makes it suitable for both interior and exterior applications.
Camo 0346130 Deck Screw SCREW MULTI-PURPOSE 8X2IN SCREW DECKING FRMG NO8X1-1/4IN
Camo Deck Screw, Thread Size: #7, 2 in L, Head Type: Trim, Drive Type: Star, Point Type: Type 17 Slash, Carbon Steel, ProTech-Coated, Multi-Purpose, Premium, Drive Size: T15, Includes: CAMO T15 Power Bit GRK Fasteners R4 Framing and Decking Screw, Thread Size: #8, 2 in L, Drive Type: Star, Steel, Package Quantity: 100 PK, Multi-Purpose, Thread Length: 1.29 in, Drive Size: T15, Applicable Materials: Cement Fiber Board, Melamine, Particle Board, Plastic, Sheet Metal, Wood GRK Fasteners Framing and Decking Screw, Thread Size: #8, 1-1/4 in L, Thread Type: Coarse, Head Type: Countersunk, Drive Type: Star, Point Type: Self-Tapping, Steel, Polymer, Package Quantity: 110 PK, Thread Length: 0.826 in, Drive Size: T15, Yellow
Camo 0346150 Deck Screw SCREW DECKING FRMG NO8X1-1/2IN Camo 0346170 Deck Screw
Camo Deck Screw, Thread Size: #7, 2-1/2 in L, Head Type: Trim, Drive Type: Star, Point Type: Type 17 Slash, Carbon Steel, ProTech-Coated, Multi-Purpose, Premium, Drive Size: T15, Includes: CAMO T15 Power Bit GRK Fasteners Framing and Decking Screw, Thread Size: #8, 1-1/2 in L, Thread Type: Coarse, Head Type: Countersunk, Drive Type: Star, Point Type: Self-Tapping, Steel, Polymer, Package Quantity: 110 PK, Thread Length: 1 in, Drive Size: T15, Yellow Camo Deck Screw, Thread Size: #7, 3 in L, Head Type: Trim, Drive Type: Star, Point Type: Type 17 Slash, Carbon Steel, ProTech-Coated, Multi-Purpose, Premium, Drive Size: T15, Includes: CAMO T15 Power Bit
CNSTRN SCREW WAFER TAN NO8X2IN SCREW M/P FRAME/DECK 8X2-1/2IN WOOD SCREW EXT 3IN STAR DRIVE
Build every project faster, easier and stronger than ever with the wafer head construction screw from Simpson Strong-Tie?. Featuring a strong pull-through resistance, this versatile fastening solution is ideal for everything from cabinetry to framing to outdoor furniture and other home improvement projects. Its patented SawTooth? point eliminates the need to predrill and saves you time, while the six-lobe drive recess head makes driving secure and easy. And the wafer head construction screws Quick Guard? coating makes it suitable for both interior and exterior applications. GRK Fasteners R4 Framing and Decking Screw, Thread Size: #8, 2-1/2 in L, Drive Type: Star, Steel, Package Quantity: 100 PK, Multi-Purpose, Thread Length: 1.575 in, Drive Size: T-15, Applicable Materials: Cement, Fiber Board, Melamine, Particle Board, Plastic, Sheet Metal, Wood The SDWS framing screw is designed and load-rated for replacing 16d, 10d and 8d nails in framing applications. The SDWS framing screw is great to nails in holding power and pull-out resistance. It is code listed in IAPMO UES ER-192 and meets 2018 and 2021 IRC? and IBC? code requirements for most common wood framing applications. The screw has a SawTooth? point that makes for fast installations with reduced torque without predrilling and its specially designed head countersinks easily to provide a clean, flush finish. The T25 bit holds the six-lobe recess tightly for more secure drive control.
SCREW R4 FRAME/DECK 9X2IN SCREW R4 FRAME/DECK 9X2-1/2IN SCREW M/P FRAME/DCK 10X3-1/2IN
GRK Fasteners Framing Screw, Thread Size: #9, 2 in L, Head Type: Bugle, Drive Type: Star, Package Quantity: 110 PK, Multi-Purpose, Yellow, Applicable Materials: Cement, Plastic, Wood R4 Multi-purpose framing and decking screws provide a faster drive for improved productivity. GRK Fasteners R4 Framing and Decking Screw, Thread Size: #10, 3-1/2 in L, Drive Type: Star, Steel, Package Quantity: 50 PK, Multi-Purpose, Thread Length: 2.36 in, Drive Size: T25, Applicable Materials: Cement Fiber Board, Melamine, Particle Board, Plastic, Sheet Metal, Wood
SCREW R4 FRAME/DECK 9X3-1/8IN SCREW R4 FRAME/DECK 10X2-1/2IN SCREW R4 FRAME/DECK 10X3-1/8IN
GRK Fasteners Framing Screw, Thread Size: #9, 3-1/8 in L, Drive Type: Star, Steel, Package Quantity: 80 PK, Multi-Purpose, Yellow, Applicable Materials: Cement, Plastic, Wood GRK's R4 Self-countersinking screw has a patented underhead with saw-blade like cutting teeth and six self-contained cutting pockets. Together they act similar to a circular saw-blade, transporting the drill dust away from the edge of the screw hole while cutting a perfectly clean hole into even the most brittle materials without cracking any surface treatment. This design enhances the R4s versatility by allowing the fastener to countersink into even the hardest woods. The head of the screw closes the hole off with precision, leaving no damaged fibers around the head. R4 screws 3-1/8 and longer have a four threaded CEE thread. This enlarges the screw hole for the non-threaded portion of the fastener, allowing the wood to settle easily. It increases the screw's drawing strength and reduces the friction on the screw shank that lowers the driving torque. GRK Fasteners R4 Framing and Decking Screw, Thread Size: #10, 3-1/8 in L, Head Type: Bugle, Drive Type: Star, Steel, Climatek-Coated, Package Quantity: 70 PK, Drive Size: T-25, Yellow, Applicable Materials: Cement, Fiber, Melamine, Plastic, Sheet Metal, Wood, Includes: Driver Bit
SCREW R4 FRAME/DECK 10X4IN SCREW R4 STAR 100CT 9X2-3/4IN SCREW FRAMING/DECK 10X4-3/4IN
GRK Fasteners R4 Screw, Thread Size: #10, 4 in L, Thread Type: W-Cut, Head Type: Countersunk, Flat, Drive Type: Star, Steel, Climatek, Package Quantity: 50 PK, Multi-Purpose, Thread Length: 2.99 in, Drive Size: T25, Yellow, Applicable Materials: Cement Fiber Board, Particle Board, Plastic, Sheet Metal, Wood GRK's R4? self-countersinking screw has a patented underhead with saw-blade like cutting teeth and six self-contained cutting pockets. Together they act similar to a circular saw-blade, transporting the drill dust away from the edge of the screw hole while cutting a perfectly clean hole into even the most brittle materials without cracking any surface treatment. This design enhances the R4's versatility by allowing the fastener to countersink into even the hardest woods. The head of the screw closes the hole off with precision leaving no damaged fibers around the head. R4? screws 2 in and longer have a four threaded CEE thread. This enlarges the screw hole for the non-threaded portion of the fastener, allowing the wood to settle easily. It increases the screw's drawing strength and reduces the friction on the screw shank that lowers the driving torque. GRK Fasteners R4 Framing and Decking Screw, Thread Size: #10, 4-3/4 in L, Drive Type: Star, Steel, Package Quantity: 50 PK, Multi-Purpose, Thread Length: 3 in, Drive Size: T25, Applicable Materials: Cement Fiber Board, Melamine, Particle Board, Plastic, Sheet Metal, Wood
Camo 0346104 Deck Screw Camo 0346190 Deck Screw CNST SCREW WFR TAN NO8X1-1/2IN
Camo Deck Screw, Thread Size: #7, 1-5/8 in L, Head Type: Trim, Drive Type: Star, Point Type: Type 17 Slash, Carbon Steel, ProTech-Coated, Multi-Purpose, Premium, Drive Size: T15, Includes: CAMO T15 Power Bit Camo Deck Screw, Thread Size: #8, 3-1/2 in L, Head Type: Trim, Drive Type: Star, Point Type: Type 17 Slash, Carbon Steel, ProTech-Coated, Multi-Purpose, Premium, Drive Size: T15, Includes: CAMO T15 Power Bit Build every project faster, easier and stronger than ever with the wafer-head construction screw from Simpson Strong-Tie?. Featuring a strong pull-through resistance, this versatile fastening solution is ideal for everything from cabinetry to framing to outdoor furniture and other home improvement projects. Its patented SawTooth? point eliminates the need to predrill and saves you time, while the 6-lobe drive recess head makes driving secure and easy. And the Wafer-Head Construction screw's Quik Guard? coating makes it suitable for both interior and exterior applications.
CNST SCREW WFR TAN NO8X2-1/2IN Camo 0346134 Deck Screw Camo 0346154 Deck Screw
Build every project faster, easier and stronger than ever with the wafer-head construction screw from Simpson Strong-Tie?. Featuring a strong pull-through resistance, this versatile fastening solution is ideal for everything from cabinetry to framing to outdoor furniture and other home improvement projects. Its patented SawTooth? point eliminates the need to predrill and saves you time, while the 6-lobe drive recess head makes driving secure and easy. And the Wafer-Head Construction screw's Quik Guard? coating makes it suitable for both interior and exterior applications. Camo Deck Screw, Thread Size: #7, 2 in L, Head Type: Trim, Drive Type: Star, Point Type: Type 17 Slash, Carbon Steel, ProTech-Coated, Multi-Purpose, Premium, Drive Size: T15, Includes: CAMO T15 Power Bit Camo Deck Screw, Thread Size: #7, 2-1/2 in L, Head Type: Trim, Drive Type: Star, Point Type: Type 17 Slash, Carbon Steel, ProTech-Coated, Multi-Purpose, Premium, Drive Size: T15, Includes: CAMO T15 Power Bit
CNSTRN SCREW WAFER TAN NO8X2IN CNSTRN SCREW WAFER TAN NO8X3IN SCREW R4 FRAMING 12/14X5-5/8IN
Build every project faster, easier and stronger than ever with the wafer-head construction screw from Simpson Strong-Tie?. Featuring a strong pull-through resistance, this versatile fastening solution is ideal for everything from cabinetry to framing to outdoor furniture and other home improvement projects. Its patented SawTooth? point eliminates the need to predrill and saves you time, while the 6-lobe drive recess head makes driving secure and easy. And the Wafer-Head Construction screw's Quik Guard? coating makes it suitable for both interior and exterior applications. Build every project faster, easier and stronger than ever with the wafer-head construction screw from Simpson Strong-Tie?. Featuring a strong pull-through resistance, this versatile fastening solution is ideal for everything from cabinetry to framing to outdoor furniture and other home improvement projects. Its patented SawTooth? point eliminates the need to predrill and saves you time, while the 6-lobe drive recess head makes driving secure and easy. And the Wafer-Head Construction screw's Quik Guard? coating makes it suitable for both interior and exterior applications. GRK Fasteners R4 Screw, Thread Size: #12, 5-5/8 in L, Thread Type: W-Cut, Head Type: Countersunk, Drive Type: Star, Steel, Package Quantity: 50 PK, Multi-Purpose, Thread Length: 3 in, Drive Size: T25, Applicable Materials: Cement Fiberboard, Particleboard, Plastic, Sheet Metal, Wood
Camo 0346174 Deck Screw Camo 0346194 Deck Screw SCREW M/P FRAME/DCK 12X6-3/8IN
Camo Deck Screw, Thread Size: #7, 3 in L, Head Type: Trim, Drive Type: Star, Point Type: Type 17 Slash, Carbon Steel, ProTech-Coated, Multi-Purpose, Premium, Drive Size: T15, Includes: CAMO T15 Power Bit Camo Deck Screw, Thread Size: #8, 3-1/2 in L, Head Type: Trim, Drive Type: Star, Point Type: Type 17 Slash, Carbon Steel, ProTech-Coated, Multi-Purpose, Premium, Drive Size: T15, Includes: CAMO T15 Power Bit GRK Fasteners R4 Framing and Decking Screw, Thread Size: #12, 6-3/8 in L, Drive Type: Star, Steel, Package Quantity: 9 PK, Multi-Purpose, Thread Length: 3 in, Drive Size: T25, Applicable Materials: Cement Fiber Board, Melamine, Particle Board, Plastic, Sheet Metal, Wood
SCREW MULTI-PRPS FRM/DCK 9X2IN SCREW M/P FRAME/DCK 10X2-1/2IN SCREW M/P FRAME/DCK 10X3-1/8IN
GRK Fasteners R4 Framing and Decking Screw, Thread Size: #9, 2 in L, Drive Type: Star, Steel, Package Quantity: 690 PAIL, Multi-Purpose, Thread Length: 1.299 in, Drive Size: T-25, Applicable Materials: Cement, Fiber Board, Melamine, Particle Board, Plastic, Sheet Metal, Wood GRK Fasteners R4 Framing and Decking Screw, Thread Size: #10, 2-1/2 in L, Drive Type: Star, Steel, Package Quantity: 470 PAIL, Multi-Purpose, Thread Length: 1.57 in, Drive Size: T25, Applicable Materials: Cement Fiber Board, Melamine, Particle Board, Plastic, Sheet Metal, Wood GRK's R4??? self-countersinking screw has a patented underhead with saw-blade like cutting teeth and six self-contained cutting pockets. Together they act similar to a circular saw-blade, transporting the drill dust away from the edge of the screw hole while cutting a perfectly clean hole into even the most brittle materials without cracking any surface treatment. This design enhances the R4's versatility by allowing the fastener to countersink into even the hardest woods. The head of the screw closes the hole off with precision leaving no damaged fibers around the head. R4??? screws 2 in and longer have a four threaded CEE thread. This enlarges the screw hole for the non-threaded portion of the fastener, allowing the wood to settle easily. It increases the screw's drawing strength and reduces the friction on the screw shank that lowers the driving torque.
SCREW M/P FRAME/DCK 10X3-1/2IN SCREW MULT-PRPS FRM/DCK 10X4IN SCREW M/P FRAME/DECK 9X2-1/2IN
GRK Fasteners R4 Screw, Thread Size: #10, 3.54 in L, Thread Type: CEE, Head Type: Round, Drive Type: Star, Point Type: Zip-Tip, Steel, Package Quantity: 300 PAIL, Multi-Purpose, Thread Length: 2.36 in, Drive Size: T25, SAE Grade, Gold, Applicable Materials: Cement Fiber Board, Melamine, Particle Board, Plastic, Sheet Metal, Wood, Length Under Head: 3.49 in GRK's R4??? self-countersinking screw has a patented underhead with saw-blade like cutting teeth and six self-contained cutting pockets. Together they act similar to a circular saw-blade, transporting the drill dust away from the edge of the screw hole while cutting a perfectly clean hole into even the most brittle materials without cracking any surface treatment. This design enhances the R4's versatility by allowing the fastener to countersink into even the hardest woods. The head of the screw closes the hole off with precision leaving no damaged fibers around the head. R4??? screws 2 in and longer have a four threaded CEE thread. This enlarges the screw hole for the non-threaded portion of the fastener, allowing the wood to settle easily. It increases the screw's drawing strength and reduces the friction on the screw shank that lowers the driving torque. #6 and #8 screws use T-15 bit; #9, #10, and #12 use bit T-25. Self-tapping, countersinking head; W-Cut thread design. Climatek coated for all weather corrosion protection conforms with ICC#2442. For use in wood, particle-board, cement fiberboard, plastic, and sheet metal.
SCREW M/P FRAME/DECK 9X3-1/8IN SCREW M/P FRAME/DECK 8X1-3/4IN SCREW M/P FRAME/DECK 8X1-1/4IN
#6 and #8 screws use T-15 bit; #9, #10, and #12 use bit T-25. Self-tapping, countersinking head; W-Cut thread design. Climatek coated for all weather corrosion protection conforms with ICC#2442. For use in wood, particle-board, cement fiberboard, plastic, and sheet metal. GRK Fasteners R4 Framing and Decking Screw, Thread Size: #8, 1-3/4 in L, Drive Type: Star, Steel, Package Quantity: 925 PAIL, Multi-Purpose, Thread Length: 1.22 in, Drive Size: T-15, Applicable Materials: Cement, Fiber Board, Melamine, Particle Board, Plastic, Sheet Metal, Wood GRK Fasteners R4 Framing and Decking Screw, Thread Size: #8, 1-1/4 in L, Drive Type: Star, Steel, Package Quantity: 1300 PAIL, Multi-Purpose, Thread Length: 0.82 in, Drive Size: T15, Applicable Materials: Cement Fiber Board, Melamine, Particle Board, Plastic, Sheet Metal, Wood
SCREW M/P FRAME/DECK 8X1-1/2IN SCREW MULTI-PRPS FRM/DCK 8X2IN SCREW M/P FRAME/DECK 8X2-1/2IN
GRK Fasteners R4 Framing and Decking Screw, Thread Size: #8, 1-1/2 in L, Drive Type: Star, Steel, Package Quantity: 1000 PAIL, Multi-Purpose, Thread Length: 1 in, Drive Size: T15, Applicable Materials: Cement Fiber Board, Melamine, Particle Board, Plastic, Sheet Metal, Wood GRK Fasteners R4 Framing and Decking Screw, Thread Size: #8, 2 in L, Drive Type: Star, Steel, Package Quantity: 850 PAIL, Multi-Purpose, Thread Length: 1.29 in, Drive Size: T15, Applicable Materials: Cement Fiber Board, Melamine, Particle Board, Plastic, Sheet Metal, Wood GRK Fasteners R4 Framing and Decking Screw, Thread Size: #8, 2-1/2 in L, Drive Type: Star, Steel, Package Quantity: 650 PAIL, Multi-Purpose, Thread Length: 1.57 in, Drive Size: T15, Applicable Materials: Cement Fiber Board, Melamine, Particle Board, Plastic, Sheet Metal, Wood
SCREW FRM/DECK R4 990PK 9X2IN SCRW FRM/DK R4 900PK 9X2-1/2IN SCRW FRM/DK R4 720PK 9X3-1/8IN
GRK Fasteners R4 Screw, Thread Size: #9, 2 in L, Thread Type: W-Cut, Head Type: Bugle, Drive Type: Star, Point Type: Self-Tapping, Steel, Climatek, Package Quantity: 900 PK, Multi-Purpose, Thread Length: 1.29 in, Drive Size: T25, Yellow, Applicable Materials: Cement Fiber Board, Particle Board, Plastic, Sheet Metal, Wood GRK's R4??? self-countersinking screw has a patented under head with saw-blade like cutting teeth and six self-contained cutting pockets. Together they act similar to a circular saw-blade, transporting the drill dust away from the edge of the screw hole while cutting an ideally clean hole into even the most brittle materials without cracking any surface treatment. This design enhances the R4???'s versatility by allowing the fastener to countersink into even the hardest woods. The head of the screw closes the hole off with precision, leaving no damaged fibers around the head. R4??? screws 3-1/8 in and longer have a four-threaded CEE thread. This enlarges the screw hole for the non-threaded portion of the fastener, allowing the wood to settle easily. It increases the screw's drawing strength and reduces the friction on the screw shank that lowers the driving torque. GRK's R4??? self-countersinking screw has a patented under head with saw-blade like cutting teeth and six self-contained cutting pockets. Together they act similar to a circular saw-blade, transporting the drill dust away from the edge of the screw hole while cutting an ideally clean hole into even the most brittle materials without cracking any surface treatment. This design enhances the R4???'s versatility by allowing the fastener to countersink into even the hardest woods. The head of the screw closes the hole off with precision, leaving no damaged fibers around the head. R4??? screws 3-1/8 in and longer have a four-threaded CEE thread. This enlarges the screw hole for the non-threaded portion of the fastener, allowing the wood to settle easily. It increases the screw's drawing strength and reduces the friction on the screw shank that lowers the driving torque.
SCREW FRM/DECK R4 450PK 10X4IN SCRW FM/DK R4 630PK 10X3-1/8IN SCREW FRAMING 12X8IN
GRK Fasteners R4 Screw, Thread Size: #10, 4 in L, Thread Type: W-Cut, Head Type: Bugle, Drive Type: Star, Point Type: Self-Tapping, Steel, Climatek, Package Quantity: 450 PK, Multi-Purpose, Thread Length: 2.99 in, Drive Size: T25, Yellow, Applicable Materials: Cement Fiber Board, Particle Board, Plastic, Sheet Metal, Wood GRK's R4??? self-countersinking screw has a patented under head with saw-blade like cutting teeth and six self-contained cutting pockets. Together they act similar to a circular saw-blade, transporting the drill dust away from the edge of the screw hole while cutting an ideally clean hole into even the most brittle materials without cracking any surface treatment. This design enhances the R4???'s versatility by allowing the fastener to countersink into even the hardest woods. The head of the screw closes the hole off with precision, leaving no damaged fibers around the head. R4??? screws 3-1/8 in and longer have a four-threaded CEE thread. This enlarges the screw hole for the non-threaded portion of the fastener, allowing the wood to settle easily. It increases the screw's drawing strength and reduces the friction on the screw shank that lowers the driving torque. GRK Fasteners R4 Framing and Decking Screw, Thread Size: #12, 8 in L, Drive Type: Star, Steel, Package Quantity: 9 PK, Multi-Purpose, Thread Length: 3 in, Drive Size: T25, Applicable Materials: Cement Fiber Board, Melamine, Particle Board, Plastic, Sheet Metal, Wood