5/16-18 x 3.1/2 inch Phillips Countersunk Screws (ANSI B18.6.3) - Thread Locking Stainless Steel (18-8 / 304)

SIK-5/16-18-3.1/2-A2-R360

Key Features

  • Thread Size (T): 5/16-18
  • Length (L): 3.1/2 inch
  • Head Diameter (D): 0.597 inch
  • Material: Stainless Steel (A2)
  • Finish: Thread Locking
View Full Technical Specification.

Available In Other Materials & Finishes


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5/16-18 x 3.1/2 inch Phillips Countersunk Screws (ANSI B18.6.3) - Thread Locking Stainless Steel (18-8 / 304) Technical Specification

5/16-18 x 3.1/2 inch Phillips Countersunk Screws (ANSI B18.6.3) - Thread Locking Stainless Steel (18-8 / 304) Drawing
Countersunk Angle (CA)80-82 Degrees
Countersunk Length (H)0.191 inch
Drive#4
FinishThread Locking
General Tolerance+/- 0.13mm
Head Diameter (D)0.597 inch
Length (L)3.1/2 inch
Manufacturing StandardANSI B18.6.3
MaterialStainless Steel (18-8 / 304)
Material SpecificationStainless Steel (18-8 / 304)
Metric or Imperial?Imperial
Pitch18 UNC
Thread Size (T)5/16-18

Product Certifications

Certificate of Conformity Included
Certificate of Conformity Included
RoHS Certified
RoHS Certified
REACH Certified
REACH Certified
ISO9001
ISO9001
Quality Approved

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5/16-18 x 3.1/2 inch Phillips Countersunk Screws (ANSI B18.6.3) - Thread Locking Stainless Steel (18-8 / 304) Description

The 5/16-18 x 3.1/2 inch Phillips Countersunk Screws (ANSI B18.6.3) - Thread Locking Stainless Steel (18-8 / 304) has the following features:

  • 5/16-18 Thread Size (T)
  • ANSI B18.6.3 Manufacturing Standard
  • 3.1/2 inch Length (L)
  • #4 Drive
  • Stainless Steel (A2) Material
  • Stainless Steel (A2) Material Specification
  • 18 UNC Pitch
  • Thread Locking Finish
  • +/- 0.13mm General Tolerance
  • Imperial Metric or Imperial?
  • 0.597 inch Head Diameter (D)
  • 0.191 inch Countersunk Length (H)
  • 80-82 Degrees Countersunk Angle (CA)

Discover more about the Imperial Phillips Countersunk Screws range

Imperial Phillips Countersunk Screws


Shipping Information

Shipping Destinations:Worldwide.
View delivery information.
Weight: 0.03kg.

Component History

Product First Available:Friday, January 22, 2016
Stock Last Updated:02:20 pm
Saturday, December 4, 2021
Specification Last Updated:Saturday, December 4, 2021

APC / Barcodes

APC (Accu Product Code):SIK-5/16-18-3.1/2-A2-R360
EAN13 (International Article No.):5057196278039
ASIN (Amazon Stock Identification No.):ASIN not defined.