[50 PKG] Hex Head Cap Screws Grade 8 Steel Zinc Yellow Bake 5/16-18 x 4 1/2"" (PT)

Mutual ScrewSKU: 3172CH8

Price:
Sale price$43.54per 50( $0.87 each)
Pieces 50
Measurement type Inch
Thread size 5/16-18
Diameter 5/16
Length 4-1/2
Material Steel
Grade Grade 8
Finish Yellow Bake
Head style Hex
Threads per inch 18
Thread style Partially Threaded
Weight 5.19 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

Hex Head Cap Screws Grade 8 steel with a zinc yellow bake finish deliver high-strength performance for demanding assemblies. This 5/16-18 UNC screw with a 4 1/2" length and partial thread (PT) is designed for heavy-duty fastening in automotive, machinery, and construction applications.

Key features

  • High-strength Grade 8 steel delivers excellent load-bearing capacity and durability.
  • Zinc yellow bake finish provides corrosion resistance and a rugged, recognizable coating.
  • 5/16-18 UNC threads for common, rugged fastening in a variety of materials.
  • Length 4 1/2 inches with partial thread (PT) for versatile clamping and alignment.
  • Hex head design for easy installation with standard wrenches or sockets and reliable torque.

Specifications

  • Size / Diameter: 5/16 inch
  • Thread pitch: 18 threads per inch (UNC)
  • Length: 4 1/2 inches
  • Head style: Hex head
  • Finish: Zinc Yellow Bake plating
  • Thread type: Partial thread (PT)

These hex head cap screws are ideal for assemblies requiring strong, reliable fasteners that resist corrosion in challenging environments. Use with compatible nuts or threaded holes according to your project specifications. Add to cart now to secure your next build with trusted Grade 8 steel performance.

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