Skip to content

95312 STRUCT SCREW 5/16X3-1/8 (25) pack

SKU GRK95312
Sold out
Original price $18.00 - Original price $18.00
Original price $18.00
$18.00
$18.00 - $18.00
Current price $18.00
In-Store Availability
Stock Status: 10+ Location: Aisle 14
Aisle View Aisle view Tap to enlarge
In-Store Only — Visit us in Gap, PA to purchase

Overview

GRK Fasteners RSS Black Structural Screw (95312) is designed for outdoor structural connections and decking applications requiring a corrosion-resistant, aesthetically consistent fastener solution. Sold in a 25-count pack, this 5/16" x 3-1/8" screw is engineered for use with treated lumber and delivers consistent performance in demanding exterior environments.

Specification Detail
MPN 95312
Brand GRK Fasteners
Manufacturer ITW Brands
Size 5/16" x 3-1/8"
Pack Quantity 25
Color / Finish Black Coating
Drive Type Star Drive (Torx-style)
Head Type Washer Head
Weight (Pack) 1.06 lb
Category Hardware / Structural Fasteners
Approved Use Treated Lumber

Technical Features

  • Black Coating, Approved for Treated Lumber: The black finish is rated for use with chemically treated lumber, preventing coating degradation from preservative compounds while delivering a bold, uniform appearance in exposed structural connections.
  • Fast Bite Tip: The engineered tip geometry initiates thread engagement immediately upon contact, reducing drive time and eliminating the need for pre-drilling in typical structural applications.
  • Washer Head Design: The integrated washer head distributes clamping load across a broader bearing surface, increasing pull-through resistance and overall joint integrity.
  • Star Drive Head: The star drive recess maximizes driver-to-fastener contact, virtually eliminating cam-out and stripping under high-torque installation — particularly critical in structural assemblies where fastener head damage is unacceptable.

Applications

  • Outdoor deck framing and decking board attachment
  • Structural connections in treated lumber assemblies
  • Exterior wood construction where a finished black appearance is specified
  • Applications requiring approved fasteners for ACQ, CA, or similarly treated wood products
More in Screws & Structural Screws View all 397 →
primary_imageExt Tn Saber 25#, 9 x 3 $122.69 9 x 3 Ext Tan Saber 5#9 x 3 Ext Tan Saber 5# $35.79 10 x 4 Ext Tn Saber 25# Approx 1196 per box10 x 4 Ext Tn Saber 25# Approx 1196 per box $126.70 9 x 2-1/2 Ext Tn Saber 25#9 x 2-1/2 Ext Tn Saber 25# $126.70 primary_imageStar Lag Tan 20#, 5/16 x 4 $112.10 primary_imageSimpson Strong-Tie SDWH19400DB-R50 Strong-Drive® SDWH™ TIMBER-HEX Screw — 0.195 in. x 4 in. 5/16 Hex, DB Coating (50-Qty) $29.00 primary_imageSimpson Strong-Tie SDWS22500DB-R50 Strong-Drive® SDWS™ TIMBER Screw (Exterior Grade) — 0.220 in. x 5 in. T40, Tan (50-Qty) $38.00 primary_imageSimpson Strong-Tie SDWS22600DB-R50 Strong-Drive® SDWS™ TIMBER Screw (Exterior Grade) — 0.220 in. x 6 in. T40, Tan (50-Qty) $47.00 primary_imageSimpson Strong-Tie SDWS22400DB-R50 Strong-Drive® SDWS™ TIMBER Screw (Exterior Grade) — 0.220 in. x 4 in. T40, Tan (50-Qty) $31.00 primary_imageSimpson Strong-Tie SDWH19600DB-R50 Strong-Drive® SDWH™ TIMBER-HEX Screw — 0.195 in. x 6 in. 5/16 Hex, DB Coating (50-Qty) $42.00 primary_imageSimpson Strong-Tie SDWS22800DB-R50 Strong-Drive® SDWS™ TIMBER Screw (Exterior Grade) — 0.220 in. x 8 in. T40, Tan (50-Qty) $63.00 primary_imageStar Lag Tan 20#, 5/16 x 5 $112.10 9 x 3 Int Saberdrive WS 5#9 x 3 Int Saberdrive WS 5# $31.58 primary_imageStar Lag Tan 10#, 5/16 x 3 $92.04 9 x 2-1/2 Ext Tan Saber 5#9 x 2-1/2 Ext Tan Saber 5# $35.79 primary_imageStar Lag Tan 20#, 5/16 x 6 $159.90 primary_imageSimpson Strong-Tie SDWS22500DB Strong-Drive® SDWS™ TIMBER Screw (Exterior Grade) — 0.220 in. x 5 in. T40, Tan (600-Qty) $396.00 primary_imageStar Lag Tan 20#, 5/16 x 3 $159.90 primary_imageSimpson Strong-Tie SDWS22400DB Strong-Drive® SDWS™ TIMBER Screw (Exterior Grade) — 0.220 in. x 4 in. T40, Tan (600-Qty) $309.00 primary_imageSimpson Strong-Tie SDWS22600DB Strong-Drive® SDWS™ TIMBER Screw (Exterior Grade) — 0.220 in. x 6 in. T40, Tan (500-Qty) $429.00
Document