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

SFP-1/4-20-1/2-A4-BL By AccuScrews
. Order within 01 hours, 40 minutes. Details. Find out when you will get it.
Location Get it by
Australia Thursday, April 13, 2017
Belgium Wednesday, April 12, 2017
Canada Thursday, April 13, 2017
Europe (EU) Wednesday, April 12, 2017
India Thursday, April 13, 2017
Ireland Wednesday, April 12, 2017
Mexico Thursday, April 13, 2017
Rest of World Thursday, April 13, 2017
United Kingdom Tuesday, April 11, 2017
United States Wednesday, April 12, 2017
United Kingdom (Saturday) Saturday, April 15, 2017

Eligible for 30 day returns. Details.

Key Features


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£1.87 / each.
Buy more & save
50 units£1.19 each36% Discount
100 units£0.99 each47% Discount
Manufactured to your order. Allow 11 working days to dispatch.
Buy online and we'll manufacture your components within 11 working days.
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1/4-20 UNC x 1/2 inch Imperial Slotted Pan Head Screws (ANSI B18.6.3) - Black A4 Stainless Steel Technical Specification

1/4-20 UNC x 1/2 inch Imperial Slotted Pan Head Screws (ANSI B18.6.3) - Black A4 Stainless Steel Drawing
FinishChemical Matt Black
General Tolerance+/- 0.13mm
Head Diameter (D)0.492 inch
Head Length (H)0.144 inch
Manufacturing StandardANSI B18.6.3
MaterialA4 Stainless Steel - Black
Material SpecificationA4-70 Stainless Steel
Metric or Imperial?Imperial
Screw Thread Pitch20 TPI
Slot Depth (P)0.087 inch
Slot Width (A)0.075 inch
Thread Length (L)1/2 inch
Thread Size (T)1/4-20

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

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

  • 1/4-20 Thread Size (T)
  • 1/2 inch Thread Length (L)
  • 0.144 inch Head Length (H)
  • ANSI B18.6.3 Manufacturing Standard
  • 0.075 inch Slot Width (A)
  • 0.087 inch Slot Depth (P)
  • A4 Stainless Steel - Black Material
  • A4-70 Stainless Steel Material Specification
  • 20 TPI Screw Thread Pitch
  • Chemical Matt Black Finish
  • +/- 0.13mm General Tolerance
  • Imperial Metric or Imperial?
  • 0.492 inch Head Diameter (D)

Other Key Information

Shipping Destinations:Worldwide.
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Weight: 5.14kg.
Product First Available:Sunday, June 28, 2015
Stock Last Updated:02:19 PM
Sunday, March 26, 2017
Specification Last Updated:Wednesday, September 14, 2016
APC (Accu Product Code):SFP-1/4-20-1/2-A4-BL
EAN13 (International Article No.):5057195001607
ASIN (Amazon Stock Identification No.):ASIN not defined.

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Product Certifications

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


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