1/4-20 UNC x 3.1/2 inch Slotted Countersunk Screws (ANSI B18.6.3) - Thread Locking Stainless Steel (A2)

SFK-1/4-20-3.1/2-A2-R360

Key Features

  • Thread Size (T): 1/4-20
  • Overall Length (L): 3.1/2 inch
  • Head Diameter (D): 0.477 inch
  • Material: Stainless Steel (A2)
  • Finish: Thread Locking
View Full Technical Specification.

Available In Other Materials & Finishes


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1/4-20 UNC x 3.1/2 inch Slotted Countersunk Screws (ANSI B18.6.3) - Thread Locking Stainless Steel (A2) Technical Specification

1/4-20 UNC x 3.1/2 inch Slotted Countersunk Screws (ANSI B18.6.3) - Thread Locking Stainless Steel (A2) Drawing
FinishThread Locking
Head Diameter (D)0.477 inch
Head Length (H)0.153 inch
Manufacturing StandardANSI B18.6.3
MaterialStainless Steel (A2)
Material SpecificationStainless Steel (A2)
Metric or Imperial?Imperial
Minimum Thread Length7/16 inch
Overall Length (L)3.1/2 inch
Pitch20 TPI
Slot Depth (F)0.048 inch
Slot Width (A)0.075 inch
Thread Size (T)1/4-20

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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1/4-20 UNC x 3.1/2 inch Slotted Countersunk Screws (ANSI B18.6.3) - Thread Locking Stainless Steel (A2) Description

The 1/4-20 UNC x 3.1/2 inch Slotted Countersunk Screws (ANSI B18.6.3) - Thread Locking Stainless Steel (A2) has the following features:

  • 1/4-20 Thread Size (T)
  • 0.153 inch Head Length (H)
  • ANSI B18.6.3 Manufacturing Standard
  • 3.1/2 inch Overall Length (L)
  • 0.075 inch Slot Width (A)
  • 0.048 inch Slot Depth (F)
  • Stainless Steel (A2) Material
  • Stainless Steel (A2) Material Specification
  • 20 TPI Pitch
  • Thread Locking Finish
  • Imperial Metric or Imperial?
  • 0.477 inch Head Diameter (D)
  • 7/16 inch Minimum Thread Length

Discover more about the Imperial Slotted Countersunk Screws range

Imperial Slotted Countersunk Screws


Shipping Information

Shipping Destinations:Worldwide.
View delivery information.
Weight: 0.02kg.

Component History

Product First Available:Sunday, June 28, 2015
Stock Last Updated:06:22 am
Tuesday, December 7, 2021
Specification Last Updated:Tuesday, December 7, 2021

APC / Barcodes

APC (Accu Product Code):SFK-1/4-20-3.1/2-A2-R360
EAN13 (International Article No.):5057195566021
ASIN (Amazon Stock Identification No.):ASIN not defined.