S.N Malhotra Industries

DIN 7990 - Hexagon head bolts for steel structures

Current norm: DIN 7990
Equivalent norms: CSN 021308;

Legend:

b – length of the thread (at least)
l – length of bolt
d – the nominal diameter of the thread
k – head height
s – size hex head turnkey

Makings:

Steel: 4.6, 5.6
Stainless: –
Plastic: –
Non Ferrous: –
Thread: 8g

Notes:

Table according to DIN 7990:

dimensions in mm
Thread dM12M16M20M22M24M27M30
P1,7522,52,5333,5
b17,752123,525,5262930,5
cmax.0,60,80,80,80,80,80,8
damax.14,718,724,426,428,432,435,4
dsnominal12162022242730
min.11,315,319,1621,1623,1626,1629,16
max.12,716,720,8422,8424,8427,8427,84
dwmin.17,22227,729,533,20,842,7
emin.20,8826,1732,9535,0339,5545,250,85
knominal8101314151719
min.7,559,2512,113,114,116,117,95
max.8,4510,7513,914,918,917,920,05
min.5,286,478,479,179,8711,2712,56
rmin.0,60,60,80,80,811
snominal=max.19243032364146
min.18,4823,1629,1631354045


Thread dM12M16M20M22M24M27M30
llengths ls and lg
Nominalmin.max.ls min.lg max.ls min.lg max.ls min.lg max.ls min.lg max.ls min.lg max.ls min.lg max.ls min.lg max.
3028,9531,05712,25            
3533,7536,251217,25814          
4038,7541,251722,251319916,5714,5      
4543,7546,252227,2518241421,51219,51019    
5048,7551,252732,2523291926,51724,51524    
5553,556,53237,2528342431,52229,52029    
6058,561,53742,2533392936,52734,525342231  
6563,566,54247,2538443441,53239,530392736  
7068,571,54752,2543493946,53744,535443241  
7573,576,55257,2548544451,54249,540493746  
8078,581,55762,2553594956,54754,5455442513949,5
8583,2586,756267,2558645461,55259,5505947564454,5
9088,2591,756772,2563695966,55764,5556452614959,5
9593,2596,757277,2568746471,56269,5606957665464,5
10098,25101,757782,2573796976,56774,5657462715969,5
105103,25106,758287,2578847481,57279,5707967766474,5
110108,25111,758792,2583897986,57784,5758472816979,5
115113,25116,759297,2588948491,58289,5808977867484,5
120118,25121,7597102,2593998996,58794,5859482917989,5
125123127  9810494101,59299,5909987968494,5
130128132  10310999106,597104,595104921018999,5
135133137  108114104111,5102109,51001099710694104,5
140138142  113119109116,5107114,510511410211199109,5
145143147  118124114121,5112119,5110119107116104114,5
150148152  123129119126,5117124,5115124112121109119,5
155151159    124131,5122129,5120129117126114124,5
160156164    129136,5127134,5125134122131119129,5
165161169    134141,5132139,5130139127136124134,5
170166174    139146,5137144,5135144132141129139,5
175171179    144151,5142149,5140149137146134144,5
180176184      147154,5145154142151139149,5
185180,4189,6      152159,5150159147156144154,5
190185,4194,6      157164,5155164152161149159,5
195190,4199,6      162169,5160169157166154164,5
200195,4204,6      167174,5165174163172159169,5