ICS 21.060.20Muttern für T-Nuten
In keeping with current practice in standards published by the International Organization for Standardization (ISO), a comma has been used throughout as the decimal marker.
Ref.No.DIN 508:2002-06
English price group 06
Sales No.0006
01.03
DEUTSCHE NORM June 2002
508
{
©No part of this translation may be reproduced without the prior permission of
DIN Deutsches Institut für Normung e.V., Berlin. Beuth Verlag GmbH , 10772Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).
Translation by DIN-Sprachendienst.
In case of doubt, the German-language original should be consulted as the authoritative text.
Nuts for T-slots
Continued on pages 2 to 4.
Foreword
This standard has been prepared by the Normenausschuss Werkzeuge und Spannzeuge (Tools and Clamp-ing Devices Standards Committee), Technical Committee  Bohrbuchsen, Spannzeuge und Vorrichtungen .Amendments
This standard differs from the January 1997 edition in that marking details have been changed and the standard has been editorially revised.
Previous editions
DIN 508: 1924-01, 1928-01, 1956-05, 1969-10, 1977-06, 1979-02, 1991-04, 1997-01.
Introduction
This standard conforms in substance to International Standard ISO 299:1987.
In conjunction with DIN 6379 studs, nuts for T-slots form clamping elements similar in function to the T-head bolts specified in DIN 787.
DIN 267-4 (withdrawn), upon which the April 1991 edition of this standard was based, was superseded by DIN EN 20898-2. However, neither the property classes specified in the latter standard nor the hardness classes specified in DIN 267-24 apply because the T-nuts specified here are not compatible with conven-tional nuts. Instead, T-nuts as specified in this standard shall be subjected to tensile testing using the proof loads specified in table 1 (cf. figure 2).
To utilize the bearing capacity of T-nuts, full-length engagement of the stud is essential. It should be noted that, when determining the bearing capacity of the assembly, allowance must be made for the reduced wall thickness of the shank.
Supersedes
January 1997 edition.
Page2
DIN508:2002-06
All dimensions are in millimetres.
1Scope
This standard specifies nuts for T-slots, which are elements for use with DIN6379 studs, for mounting workpieces or fixtures in T-slots as specified in DIN650 on machine tool tables, workholding plates, and in workholding fixtures and toolholders.
2Normative references
This standard incorporates, by dated or undated reference, provisions from other publications. These norma-tive references are cited at the appropriate places in the text and the titles of the publications are listed below. For dated references, subsequent amendments to or revisions of any of these publications apply to this standard only when incorporated in it by amendment or revision. For undated references, the latest edition of the publication referred to applies.
DIN267-4Fasteners – Technical delivery conditions – Property classes for nuts (previous classes) DIN267-24Fasteners – Technical delivery conditions – Property classes for nutseditorially
DIN650Dimensions of T-slots for machine tool tables
DIN787T-head bolts
DIN6379Studs for use with T-nuts
DIN EN20898-2Mechanical properties of fasteners – Part2:Nuts with specified proof load values –Coarse thread (ISO898-2:1992)
ISO299:1987Machine tool tables – T-slots and corresponding bolts
ISO2768-1:1989General tolerances – Part 1: Tolerances for linear and angular dimensions without indi-vidual tolerance indications
DIN EN ISO4759-1Tolerances for fasteners – Part1: Bolts, screws, studs and nuts – Product grades A, B and C (ISO4759-1:2000)
3Dimensions, proof loads and designation
Nuts for T-slots shall have dimensions and resist proof loads as specified in table 1 (cf. figures 1 and 2). Design details not given here remain unspecified.
For general tolerances, tolerance class m as specified in ISO2768-1 shall apply.
Figure1:T-nuts
Page 3
DIN508:2002-06
Table1:Dimensions and proof loads
Approx.
mass
per unit,
in g
Page4
DIN508:2002-06
5Tolerances
Nuts for T-slots shall be manufactured in product grade A in accordance with DIN EN ISO4759-1.
6Marking
As a rule, nuts shall be marked with the DIN symbol in a durable manner. The marking shall be easy to
read. If marking is not possible for lack of space, the smallest commercially available packaging unit shall bear the marking.
Other relevant standard
DIN6330Metric hexagon nuts 1,5 d high

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