[20 PKG] Lag Screws Hex 316 Stainless Steel 5/16 X 3

Mutual ScrewSKU: 3148L316YW

Price:
Sale price$142.27per 20( $7.11 each)
Pieces 20
Measurement type Inch
Thread size 5/16
Diameter 5/16
Length 3
Material Steel
Grade 316
Finish Stainless Steel
Head style Hex
Threads per inch 9
Thread style Partially Threaded
Weight 2.0 lb

WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to https://www.P65Warnings.ca.gov.

Description

Lag Screws Hex 316 Stainless Steel 5/16 x 3 are high-strength, weather-resistant fasteners engineered for outdoor wood connections. Crafted from premium 316 stainless steel, these hex lag screws resist corrosion in rain, humidity, and coastal environments, ensuring lasting performance in decks, fences, pergolas, and other exterior structures.

With a hex drive for easy installation using a wrench or socket, these lag screws deliver secure, heavy-duty holding power in treated lumber and hardwood alike. The 5/16" diameter and 3" length provide a strong bite for sizable timber pieces, making them ideal for structural framing and long-lasting outdoor projects.

Specifications

  • Size: 5/16" dia x 3" long
  • Material: 316 stainless steel (marine-grade corrosion resistance)
  • Drive: Hex-head for socket or wrench installation
  • Type: Lag screw
  • Finish: Natural stainless steel

Benefits

  • Excellent corrosion resistance in harsh outdoor environments, including coastal areas
  • Strong holding power for deck framing, pergolas, fences, and exterior carpentry
  • Simple installation with standard tools; compatible with pilot holes appropriate for wood type

Applications

  • Decks and outdoor structures
  • Fences, railings, and pergolas
  • Timber-framing and heavy-duty wood-to-wood connections

Can We Help?

If you’re not sure that this product is right for you, give us a call!
800-222-0324

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