[50 PKG] Hex Head Cap Screws 316 Stainless Steel 5/16-18 x 3 1/2" (PT)

Mutual ScrewSKU: 3156CH316BB

Price:
Sale price$98.59per 50( $1.97 each)
Measurement type Inch
Thread size 5/16-18
Diameter 5/16
Length 3-1/2
Material Steel
Grade 316
Finish Stainless Steel
Head style Hex
Threads per inch 18
Thread style Partially Threaded
Weight 4.11 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

Upgrade your fastener kit with Hex Head Cap Screws in 316 stainless steel. Sized 5/16-18 x 3-1/2" (PT), these robust hex screws deliver outstanding corrosion resistance and dependable strength for demanding environments.

  • Material: 316 stainless steel provides marine-grade corrosion resistance and durability in outdoor and wet conditions.
  • Size & Thread: 5/16-18 UNC coarse thread for quick assembly and strong clamping, 18 threads per inch.
  • Length: 3-1/2 inches overall length to suit thicker components.
  • Head & Drive: Hex head with a standard hex drive for reliable torque and easy installation.
  • Partial Thread: PT denotes partially threaded engagement (where specified), enabling controlled shear and clamp.
  • Finish: Passivated to enhance corrosion resistance and cleanliness for assembly in challenging environments.
  • Applications: Perfect for marine, outdoor, automotive, machinery, and construction projects requiring strong, durable fasteners.
  • Standards: Compatible with standard nuts and tapped holes that match 5/16-18 UNC specifications.

Tip: For best results, pair these screws with corresponding nuts and washers made of compatible materials to prevent galvanic corrosion. Store in a dry place to maximize long-term performance.

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