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Works Standard for Schraubenwerk Zerbst

SZWN001

Bolted connections made from hot-dip galvanized fittings M72x6 in conformity with DASt - Directive 021

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24th June 2009

Date

A.Masurek

Name

Created: 27 May 2009

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Works Standard for Schraubenwerk Zerbst

SZWN001

Table of Content

Table of Content Scope of Application Geometry of the fastening elements Dimensions of the bolts Bolt Lengths Technical Delivery Conditions for Bolts Grip Length of Bolts Dimensions of the Nuts Technical Delivery Conditions for Nuts Dimensions of the Washers Technical Delivery Conditions for Washers Values for Dimensioning and Planned Prestressing Change History 2 2 3 3 4 4 5 6 7 8 9 9 10

Scope of Application

This works standard refers to the fastening system ,,HT-bolt fittings for steel construction" as expansion of the DASt Directive 021 by the nominal size M72x6. The application of the M72x6 HT-bolt fittings is in accordance with DIN 18800-1 and DIN 18800-7.

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Date

A.Masurek

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Created: 27 May 2009

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Works Standard for Schraubenwerk Zerbst

SZWN001

Geometry of the fastening elements

Dimensions of the bolts 1)

Thread end acc. DIN 78-K incomplete thread Batch or series number

d P 2) b c da ds dw 3) e k kw r s

1) 2) 3)

M72x6 6 (reference dimension) min. max. max. nom min. max. min. min. nom. min. max. min. min. max. = nom. min. 126 0.5 1 82.2 72 70.8 73.2 102.41 121.8 45 43.75 46.25 30.63 4.5 110 107.8

Dimensio ns in mm P = thread pitch (fine-pitch thread) dwmax = s actual

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Created: 27 May 2009

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Works Standard for Schraubenwerk Zerbst

SZWN001

Bolt Lengths

The lengths are graded in 20mm steps.

l nom. 180 200 220 240 260 280 300 320 340 360 380 400 420 440 460 480 500 l min. 178 197.7 217.7 237.7 257.4 277.4 297.4 317.15 337.15 357.15 377.15 397.15 416.85 436.85 456.85 476.85 496.85 M72x6 l max. 182 202.3 222.3 242.3 262.6 282.6 302.6 322.85 342.85 362.85 382.85 402.85 423.15 443.15 463.15 483.15 503.15 ls min. 36 56 76 96 116 136 156 176 196 216 236 256 276 296 316 336 356 lg max. 54 74 94 114 134 154 174 194 214 234 254 274 294 314 334 354 374

Technical Delivery Conditions for Bolts

Material General Requirements Thread Mechanical Properties Limit Dimensions, Shape and Positional Tolerances Surface Acceptance Inspection

1)

Tolerance Standard Strength Class Standard Product Class Standard

Steel DIN ISO 8992 6g DIN ISO 261, DIN ISO 965 10.9 DIN EN ISO 898-1 C 1) DIN EN ISO 4759-1 hot-dip galvanized acc. DIN EN ISO 10684 DIN ISO 3269 applicable for acceptance inspection

Exception tolerance for nominal length (=js17)

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24th June 2009

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A.Masurek

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Created: 27 May 2009

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Works Standard for Schraubenwerk Zerbst

SZWN001

Grip Length of Bolts

M72x6 l nom. 180 200 220 240 260 280 300 320 340 360 380 400 420 440 460 480 500 lk min. 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 360 380 max. 90 110 130 150 170 190 210 230 250 270 290 310 330 350 370 390 410

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24th June 2009

Date

A.Masurek

Name

Created: 27 May 2009

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Works Standard for Schraubenwerk Zerbst

Dimensions of the Nuts 1)

Batch or series number

SZWN001

d chamfered up to thread diameter

d P 2) dw 3) e m mw s

1) Dimensions 2) P =

M72x6 min. min. max. = nom. min. max. = nom. min.

in mm

6 102.41 121.8 58 56.1 44.88 110 107.8

thread pitch (fine-pitch thread) 3) d = s actual wmax

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24th June 2009

Date

A.Masurek

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Created: 27 May 2009

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Works Standard for Schraubenwerk Zerbst

Technical Delivery Conditions for Nuts

Material General Requirements Thread Mechanical Properties Limit Dimensions, Shape and Positional Tolerances Surface Acceptance Inspection

1)

SZWN001

Tolerance Standard Strength Class Standard Product Class Standard

Steel DIN ISO 8992 6AZ1) DIN ISO 261, DIN ISO 965 10 DIN EN ISO 898-62) B DIN EN ISO 4759-1 hot-dip galvanized acc. DIN EN ISO 10684 DIN ISO 3269 applicable for acceptance inspection

6AZ 6H

6AZ modified: Outside Diameter D and Effective Diameter D2 Core Diameter D1 A test strain of Sp = 1090N/mm² is taken as a basis

2)

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24th June 2009

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Created: 27 May 2009

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Works Standard for Schraubenwerk Zerbst

Dimensions of the Washers 1)

SZWN001

d1 d2

h c e

1) Dimensions

Nominal Size 72 for M72x6 min. = nom. max. min. max. = nom. nom. min. max. min. = nom. max. min. max.

in mm

74 74.74 123.4 125 10 8.8 11.2 5 5.5 2.5 5

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24th June 2009

Date

A.Masurek

Name

Created: 27 May 2009

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Works Standard for Schraubenwerk Zerbst

Technical Delivery Conditions for Washers

Mechanical Properties Limit Dimensions, Shape and Positional Tolerances Surface Acceptance Inspection

1)

SZWN001

Material Hardness Product Class Standard

Steel1), heat-treated 300-370HV A DIN EN ISO 4759-3 hot-dip galvanized acc. DIN EN ISO 10684 DIN ISO 3269 applicable for acceptance inspection

Acc. to choice of the manufacturer

Values for Dimensioning and Planned Prestressing

The standard prestressing forces Fv according to DIN 18800-7:2008-11, Element (830). Applicable for the tightening according to the torque prestressing method are the tightening torques MA for tightening by turning the nuts.

M72x6 Shaft cross-section A sh in mm² Stressed cross-section Asp in mm² Force at the minimum 0.2% elongation limit F(Rp0.2min) in kN Minimum breaking strength F(Rm min) in kN Standard prestressing force FV in kN Tightening torque MA - hot-dip galvanized, nut lubricated in Nm * Value is still to be verified in friction value trials

4071.5 3463

3255

3601 2180 22000*

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24th June 2009

Date

A.Masurek

Name

Created: 27 May 2009

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Works Standard for Schraubenwerk Zerbst

SZWN001

Change History

Change Status a Change Creation Page 7 - Comment 1) added Date 5/27/2009 6/24/2009 Name Masurek Masurek

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Change

24th June 2009

Date

A.Masurek

Name

Created: 27 May 2009

th

Change status: a Page 10 of 10

Information

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