Skip to content
Free Local Pickup Ship to Your Hometown Store
Pro & Contractor Accounts Apply for Net Terms
100,000+ Products Trusted American Hardware Brands

SPAX PowerLags 5/16 in. in. X 4-1/2 in. L T-40 Washer Head Serrated Structural Screws

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

Discover the strength and reliability of SPAX PowerLags 5/16 in. X 4-1/2 in. L T-40 Washer Head Serrated Structural Screws for your next project!
Spax MPN 4581820801155 In Stock & Ready to Ship
Local Price Check i Local stores may price this as low as $44.99. Our online price is $49.99.
$49.99
Includes free shipping on orders over $75 · $8.99 standard below
Delivery in as little as 1–4 business days Order within for same-day shipping
Shop Local · Support Independent

Every order helps keep your local hardware store on the corner.

Why we built NHG
You might find it for less locally. Independent retailers often offer competitive pricing — some products are even cheaper in-store than online.
Real expert advice — not search results. Independent hardware staff know their inventory and the local conditions you're working in.
Keep the neighborhood working. Every dollar spent at an independent retailer returns roughly 3x more to your local economy than at a national chain.

About Product Overview

Are you looking for a reliable solution for your structural projects? The SPAX PowerLags 5/16 in. X 4-1/2 in. L T-40 Washer Head Serrated Structural Screws are designed to deliver exceptional performance and durability in wood-to-wood applications, making them an essential addition to your toolkit.

These high-quality structural screws feature a washer head and a unique serrated design that provides superior grip and reduces the risk of splitting wood, ensuring your projects are built to last. With a diameter of 5/16 in. and a length of 4-1/2 in., they are perfect for framing and other construction needs.

  • Drive Style: T-40, making installation quick and easy
  • Corrosion Resistance: High-grade finish ensures longevity even in challenging environments
  • Convenient Container Size: Perfectly sized for your projects, minimizing waste
  • Gauge: Grade 5 strength, ideal for structural applications

Whether you're a DIY enthusiast or a seasoned professional, the SPAX PowerLags 5/16 in. X 4-1/2 in. L T-40 Washer Head Serrated Structural Screws will help you achieve robust and reliable connections. Don't compromise on quality—add these must-have screws to your cart today and experience the difference in your next project!

The Details Specifications

Brand Spax
SKU 5034885
UPC 712216019744
Unit 0
Case Pack Quantity 4 per case
Retail Unit Quantity 1
Unit of Measure 50 PK
Dimensions (L × W × H) 3 × 7 × 4
Weight 3 lbs
Cubic Feet 0.05053 ft³
Country of Origin USA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare