Black Friday - 20% Off Everything Until Sunday. Use Code: BLACKFRIDAY.
View All Sizes / Materials
1/4-20 UNC x 1/2 inch Slotted Countersunk Screws (ANSI B18.6.3) - A4 Stainless Steel
Images shown for graphic representation

1/4-20 UNC x 1/2 inch Slotted Countersunk Screws (ANSI B18.6.3) - A4 Stainless Steel

SFK-1/4-20-1/2-A4

. Order within 04 hours, 22 minutes. Details. Find out when you will get it.
Delivered To Get 140 pieces by:
Australia Friday, December 1, 2017
Austria Thursday, November 30, 2017
Belgium Thursday, November 30, 2017
Canada Friday, December 1, 2017
Czech Republic Thursday, November 30, 2017
Denmark Thursday, November 30, 2017
Europe (EU) Thursday, November 30, 2017
France Thursday, November 30, 2017
Germany Thursday, November 30, 2017
Hong Kong Friday, December 1, 2017
India Friday, December 1, 2017
Indonesia Friday, December 1, 2017
Ireland Thursday, November 30, 2017
Malaysia Friday, December 1, 2017
Mexico Friday, December 1, 2017
Netherlands Thursday, November 30, 2017
New Zealand Friday, December 1, 2017
Norway Thursday, November 30, 2017
Philippines Friday, December 1, 2017
Rest of World Friday, December 1, 2017
Singapore Friday, December 1, 2017
South Africa Friday, December 1, 2017
Sweden Thursday, November 30, 2017
Switzerland Thursday, November 30, 2017
Taiwan Thursday, November 30, 2017
Turkey Thursday, November 30, 2017
United Arab Emirates Friday, December 1, 2017
United Kingdom Wednesday, November 29, 2017
United States Thursday, November 30, 2017
United Kingdom (Saturday) Saturday, December 2, 2017

Key Features

  • A4 Stainless Steel, also known as marine grade or 316 Stainless Steel. Details.
  • Metric or Imperial?: Imperial
  • Thread Size (T): 1/4-20
  • Overall Length (L): 1/2 inch
  • Pitch: 20 TPI
View the full technical specification
Not available online. Talk to our engineers.
Eligible for 30 day returns. Details.
$1.35 / each.
Buy more & save
20 units$1.14 each15% Discount
40 units$0.98 each27% Discount
100 units$0.84 each38% Discount
200 units$0.72 each47% Discount
400+ unitsGet A Quote
140 Stock This item may take 1 additional day to dispatch. Confirm delivery date at checkout. Need more than 140?
Buy online and we'll manufacture your components within 15 working days.
View Comparison
AccuScrews Components Official AccuScrews Product.

1/4-20 UNC x 1/2 inch Slotted Countersunk Screws (ANSI B18.6.3) - A4 Stainless Steel Technical Specification

1/4-20 UNC x 1/2 inch Slotted Countersunk Screws (ANSI B18.6.3) - A4 Stainless Steel Drawing
FinishSelf Colour
Head Length (H)0.153 inch
Manufacturing StandardANSI B18.6.3
MaterialA4 Stainless Steel
Material SpecificationA4-70 Stainless Steel
Maximum Head Diameter (D)0.477 inch
Metric or Imperial?Imperial
Minimum Thread Length7/16 inch
Overall Length (L)1/2 inch
Pitch20 TPI
Slot Depth (F)0.477 inch
Slot Width (A)0.015 inch
Thread Size (T)1/4-20

See a problem with this specification? Let us know.


Product Certifications

Signed Certificate of Conformity
Signed Certificate of Conformity
RoHS Compliant
RoHS Compliant
REACH Compliant
REACH Compliant

3D Models

3D models are only available to registered customers.

To view and download models from our 3D library, please log in or sign up.


1/4-20 UNC x 1/2 inch Slotted Countersunk Screws (ANSI B18.6.3) - A4 Stainless Steel Description

The 1/4-20 UNC x 1/2 inch Slotted Countersunk Screws (ANSI B18.6.3) - A4 Stainless Steel has the following features:

  • 1/4-20 Thread Size (T)
  • 0.153 inch Head Length (H)
  • ANSI B18.6.3 Manufacturing Standard
  • 1/2 inch Overall Length (L)
  • 0.015 inch Slot Width (A)
  • 0.477 inch Slot Depth (F)
  • A4 Stainless Steel Material
  • A4-70 Stainless Steel Material Specification
  • 20 TPI Pitch
  • Self Colour Finish
  • Imperial Metric or Imperial?
  • 7/16 inch Minimum Thread Length
  • 0.477 inch Maximum Head Diameter (D)

Other Key Information

Shipping Destinations:Worldwide.
View delivery information.
Weight Band (100 items):Between 0.25kg and 0.5kg. Add to cart to calculcate exact weights.
Product First Available:Sunday, June 28, 2015
Stock Last Updated:11:52 AM
Saturday, November 25, 2017
Specification Last Updated:Tuesday, October 3, 2017
APC (Accu Product Code):SFK-1/4-20-1/2-A4
EAN13 (International Article No.):5054328180673
ASIN (Amazon Stock Identification No.):ASIN not defined.

Top