MBN 10228_2001.12_EN

De c ember 2001

Daimler-Benz

Hexalobular socket raised head screws

with collar

MBN 10 228

Continued on pages 2 and 3

Issued by:

DaimlerChrysler AG D-70546 Stuttgart

Standards (H. Pfander); Tel.: (+49)711-17-41040

Technical responsibility (name): D?rfel Department: EP/QDN

Plant:019Telephone: (+49) 711 17- 4 17 42

HPC:

T722

Sequence number

14 320

Confidential! All rights reserved. Distribution or copies without written agreement by DaimlerChrysler AG prohibited.

Contractors may only receive standards through the responsible purchasing department.

Dimensions in mm

Scope

This standard contains specifications for hexalobular socket raised head screws with collar with coarse pitch thread, with nominal thread diameter from 3 mm to 8 mm, with property classes 8.8 in product grade A.The gauging of the hexalobular internal driving feature is specified in MBN 10 168.

Approval of suppliers

All Torx licensees of the Camcar Division of Textron Inc., USA, have unrestricted approval.

Other manufacturers wishing to be granted approval shall ensure that their products comply with the licensee's technical requirements. Product testing is required.

Dimensions, designation

Designation of a hexalobular socket raised head screw with collar, with thread M8, nominal length l = 60 mm, property class

8.8 and surface protection, e.g.:

Hexalobular screw MBN 10 228 - M8 x 60 - 8.8 DBL 9440.40

For the designation of types and designs with additional ordering information, refer to DIN 962.

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MBN10 228 : De c ember 2001

Thread size (d)

M3M4M5M6M8 P

1)

0,50,70,811,25 a

max.

11,41,622,5 b

2530405065 d a

max.3,64,75,76,89,2 max.7,51011,514,519 min.6,929,4210,813,818,16 max.2,523,253,954,756,15 min.2,282,953,654,455,85 max.0,81,11,351,82,2 min.0,60,91,051,41,8 r min.0,10,20,20,250,4 r f ?3,85,86,68,211 x

max.

1,251,7522,53,2Size T10

T20T25T30T45 A

2,8

3,954,55,67,95max.1,271,661,912,423,18min.

1,01

1,27

1,52

2,02

2,79

Length l

6810121620Thread approx. up to head

2530354045505560657080shank diameter ≈ flank diameter 90normal shank diameter allowed 100

Intermediate lengths shall be avoided wherever possible.

1) P = Pitch of the coarse pitch thread in accordance with DIN 13 Part 12

d k k c

Hexa-lobular internal driving feature

t

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MBN 10 228 : De c ember 2001

Technical delivery conditions

Material

Steel General requirements

International standard DIN ISO 8992

Tolerance

6 g

International standards

ISO 261, ISO 965-2

Property class (material)8.8

Standard

DIN EN ISO 898-1

Product grade A

International standards

DIN ISO 4759-1

Finish

As manufactured

Requirements for surface protection in accordance with DBL .

The limit values for surface defects are specified in DIN EN 26 157 Part 3.

Acceptability

For acceptance testing, DIN ISO 3269 and MBN 10 168 shall apply.

Thread rolling screws

- Case hardened and tempered thread rolling screws

Mechanical and performance requirements in accordance with DIN EN ISO 7085Designation example:

Hexalobular screw MBN 10 228 - M8 GFx 50 - St DBL 9440.40

Mechanical and performance requirements in accordance with MBN 7085-4Designation example:

Hexalobular screw MBN 10 228 – M5 DBx 40 - St DBL 9440.40

- Quenched and tempered thread rolling screws DUOTAPTITE

Mechanical and performance requirements in accordance with MBN 7085-2Designation example:

Hexalobular screw MBN 10 228 - M8 DTx 54 - 10.9 DBL 9440.40

Length grading in accordance with MBN 7085-2 Table 4.

Matrix of characteristics

For hexalobular socket screws in accordance with this standard, matrix of characteristics MBN 4000-2-1.2 shall apply.

Thread

Mechanical properties

Limit deviations and geometrical tolerances