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GRK FASTENERS

GRK Fasteners RSS 12221 Structural Screw, 5/16 in Thread, 3-1/8 in L, Washer Head, Star Drive, Steel, 100 PK

Category Wood Screws
5149596
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GRK FASTENERS

GRK Fasteners RSS 12221 Structural Screw, 5/16 in Thread, 3-1/8 in L, Washer Head, Star Drive, Steel, 100 PK

Item Code: 5149596
Category Wood Screws
Manufacturer GRK FASTENERS
  • Case hardened steel for high tensile, torque and shear strength
  • CEE Thread™ enlarges hole to reduce splitting
  • Climatek™ coating is AC257 code approved for use in treated lumber
  • Cutting pockets provide a clean hole and reduces splitting and bore with precision
  • Recessed star drive zero stripping, with six points of contact
  • W-Cut™ low torque, faster drive

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Description

GRK's RSSâ„¢ screw is made of specially hardened steel to provide you with high tensile, torque and shear strength. The sharp threads and points bite instantly into the material (including hardwood), reducing the splitting effect due to smaller shanks. RSSâ„¢ screws that are 3-1/8 in and longer have CEE threads which enlarge the screw hole for the non-threaded portion of the fastener, allowing the wood to settle easily and increases the screw's drawing strength. The CEE thread also reduces the friction on the screw shank which can result in lowering the driving torque and the likelihood of splitting the wood. This is why the RSSâ„¢ screw is an efficient lag screw alternative. Our round head with built-in shield (washer type head) has no sharp edges like conventional lag screws. The added shoulder (nominal diameter) underneath the washer has the ability to center the RSSâ„¢ screw in pre-drilled hardware like hinges and connector plates.

Specifications

UNSPSC Code

20.203.203

Weight

4lb

Height

5.18in

Width

6.25in

Length

5in

Applicable Materials

Wood

Brand

GRK FASTENERS

Category

CONSTRUCTION SCREWS - PACKAGED

Drive Size

T-30

Drive Type

Star

Head Type

Washer

Length

3-1/8

Material

Steel

Package Quantity

100 PK

Shear Strength

2948 lb

Tensile Strength

4247 lb

Thread Length

2-1/8 in

Thread Size

5/16 in

Description

GRK's RSSâ„¢ screw is made of specially hardened steel to provide you with high tensile, torque and shear strength. The sharp threads and points bite instantly into the material (including hardwood), reducing the splitting effect due to smaller shanks. RSSâ„¢ screws that are 3-1/8 in and longer have CEE threads which enlarge the screw hole for the non-threaded portion of the fastener, allowing the wood to settle easily and increases the screw's drawing strength. The CEE thread also reduces the friction on the screw shank which can result in lowering the driving torque and the likelihood of splitting the wood. This is why the RSSâ„¢ screw is an efficient lag screw alternative. Our round head with built-in shield (washer type head) has no sharp edges like conventional lag screws. The added shoulder (nominal diameter) underneath the washer has the ability to center the RSSâ„¢ screw in pre-drilled hardware like hinges and connector plates.

Specifications

UNSPSC Code

20.203.203

Weight

4lb

Height

5.18in

Width

6.25in

Length

5in

Applicable Materials

Wood

Brand

GRK FASTENERS

Category

CONSTRUCTION SCREWS - PACKAGED

Drive Size

T-30

Drive Type

Star

Head Type

Washer

Length

3-1/8

Material

Steel

Package Quantity

100 PK

Shear Strength

2948 lb

Tensile Strength

4247 lb

Thread Length

2-1/8 in

Thread Size

5/16 in

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