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GM6217M

2nd Edition, August 1, 2011

Complete Document

Material and Performance Requirements for Induction Hardened – Thread Cutting – Tapping Screws Type D Type F Type T

Includes all amendments and changes through Inactive for New Design Notice 4, August 2011


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Superseded By: ISO 2702

EN
Additional Comments:
ENGLISH * INACTIVE FOR NEW DESIGN * USE ISO 2702
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Referenced Items:

GM275M
GM500M
GM6170M
GM9053P

Product Details:

  • Revision: 2nd Edition, August 1, 2011
  • Published Date: August 2011
  • Status: Superseded By:
  • Superseded By: ISO 2702
  • Document Language: English
  • Published By: General Motors Company (GMNA)
  • Page Count: 5
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

This standard covers material and performance requirements applicable to Types D, F and T (thread cutting) tapping screws, heat treated to achieve properties comparable to GMSOOM (9.8) metric screws and GM275M inch screws with induction hardened points, in sizes 5 mm (10 in.) and larger, which are suitable for use in general engineering and structural attachments.

NOTE: This specification is intended to supersede GM specification GM6170M(A) for metric Types D, F and T tapping screws in the 6 through 12 mm sizes.

When selecting the length of screw for any application, it should be an objective to locate the induction hardened zone beyond the exit side of the mating component as depicted in Figure 1, or to maintain a minimum length of thread engagement equal to four full form noninduction hardened threads as illustrated in Figure 2.

The performance values specified in this standard are not valid for design use unless all conditions of the application are identical to the combination of laboratory conditions described in the testing procedure.