Hello. Sign In
Standards Store

Look Inside

BS 3409-2

66th Edition, January 31, 1966

Complete Document

Specification for The tapping of holes to receive wire thread inserts (UNC and UNF threads) - Part 2: Diameters below 1/4 in

Includes all amendments and changes through Reaffirmation Notice , March 1, 2013

Detail Summary

Active, Most Current

Price (USD)
Secure PDF
Single User
In Stock
Add to Cart

People Also Bought These:

ASQ Z1.4
ISO/IEC 17025
ASTM A480/A480M

Product Details:

  • Revision: 66th Edition, January 31, 1966
  • Published Date: March 1, 2013
  • Status: Active, Most Current
  • Document Language: English
  • Published By: British Standards Institution (BSI)
  • Page Count: 14
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

Limits of size for tapped holes to accommodate wire thread inserts to provide thread sizes from No. 2 to No. 12 UNC inclusive and from No. 2 to No. 12 UNF inclusive. Recommendations for general dimensions and limits of size on the threaded portion of screwing taps intended to produce holes to the limits specified; details of a recommended gauging system for checking them.