4-40 UNC x 1/4 inch Socket Countersunk Screws (ANSI B18.3) - Marine Stainless Steel (A4)

SSK-4-40-1/4-A4

Key Features

  • 3 Year Extended Warranty.
  • Free Technical Support From Our Engineers.
  • Custom Dimensions Available Through Our Custom Manufacture Service.
  • Thread Size (T): 4-40
  • Overall Length (L): 1/4 inch
View Full Technical Specification.

Available In Other Materials & Finishes


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4-40 UNC x 1/4 inch Socket Countersunk Screws (ANSI B18.3) - Marine Stainless Steel (A4) Technical Specification

4-40 UNC x 1/4 inch Socket Countersunk Screws (ANSI B18.3) - Marine Stainless Steel (A4) Drawing
Countersunk Angle82 +/- 2 Degrees
Countersunk Length (H)0.083 inch
FinishNatural
General Tolerance+/- 0.13mm
Head Diameter [max] (D)0.255 inch
Head Diameter [min] (D)0.218 inch
Hexagon A/F (A)1/16 inch
Hexagon Depth (P)0.055 inch
Manufacturing StandardANSI B18.3
MaterialMarine Stainless Steel (A4)
Material SpecificationMarine Stainless Steel (A4)
Metric or Imperial?Imperial
Overall Length (L)1/4 inch
Screw Thread Pitch40 TPI
Thread Size (T)4-40

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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4-40 UNC x 1/4 inch Socket Countersunk Screws (ANSI B18.3) - Marine Stainless Steel (A4) Description

The 4-40 UNC x 1/4 inch Socket Countersunk Screws (ANSI B18.3) - Marine Stainless Steel (A4) has the following features:

  • 4-40 Thread Size (T)
  • 1/16 inch Hexagon A/F (A)
  • 0.055 inch Hexagon Depth (P)
  • ANSI B18.3 Manufacturing Standard
  • 1/4 inch Overall Length (L)
  • Marine Stainless Steel (A4) Material
  • Marine Stainless Steel (A4) Material Specification
  • 40 TPI Screw Thread Pitch
  • 82 +/- 2 Degrees Countersunk Angle
  • Natural Finish
  • +/- 0.13mm General Tolerance
  • Imperial Metric or Imperial?
  • 0.255 inch Head Diameter [max] (D)
  • 0.083 inch Countersunk Length (H)
  • 0.218 inch Head Diameter [min] (D)

Discover more about the Imperial Socket Countersunk Screws range.

Imperial Socket Countersunk Screws are designed for use alongside countersunk holes. The addition of a standard socket drive means that this type of screw can be installed using an Allen Key or Hexagon Drive Bit.

Sizing

Socket Countersunk Screws are manufactured in imperial thread sizes ranging from No. 0 up to 7/8 inch. lengths are available from 1/8 inch to 10 inch.


Shipping Information

Shipping Destinations:Worldwide.
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Weight Band (100 items):Less than 0.1kg. Add to cart to calculate exact weights.

Component History

Product First Available:Sunday, June 28, 2015
Stock Last Updated:02:02 pm
Friday, January 21, 2022
Specification Last Updated:Friday, January 21, 2022

APC / Barcodes

APC (Accu Product Code):SSK-4-40-1/4-A4
EAN13 (International Article No.):5054328147324
ASIN (Amazon Stock Identification No.):ASIN not defined.