S.N Malhotra Industries

DIN 6921 - Hexagon flange bolts metric

Current norm: DIN 6921

Equivalent: EN 1665

Legend:

d2 – the inner diameter of the ring
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: 8.8, 10.9
Stainless: A2
Plastic: –
Non Ferrous: –
Thread: 6g

Notes:

Table according to DIN 6921:

dimensions in mm
Tdread
size d
M5M6M8M10M12(M14)M16M20
M8 x 1M10 x 1,25M12 x 1,5(M14x1,5)M16 x 1,5M20 x 1,5
(M10 x 1)(M10 x 1,25)
P0,811,251,51,75222,5
CMin.11,11,21,51,82,12,43
daMin.5681012141620
Max.5,756,758,7510,81315,117,321,6
dcMax.11,814,217,921,82629,934,542,8
dwMin.9,812,215,819,623,827,631,939,9
eMin.8,7911,0514,3816,6420,0323,3626,7532,95
hMax.6,27,39,411,413,815,918,322,4
mMin.4,75,77,69,611,613,315,318,9
Min.2,23,14,55,56,77,8911,1
sNominal size = max.810131518212430
Min.7,789,7812,7314,7317,7320,6723,6729,16
rMax.0,30,360,480,60,720,880,961,2
Tab 2.
Thread dM5M6M8M10M12M14M16M 20
M8 x 1M10 x 1,25M12 x 1,5M14 x 1,5M16 x 1,5M20 x 1,5
(M10 x 1)(M12 x 1,25)
l

Shank lengtds
nominal dimensionmin.max.ls min.lg maxls min.lg maxls min.lg maxls min.lg maxls min.lg maxls min.lg maxls min.lg maxls min.lg max
109,7110,292,4              
1211,6512,352,43            
1615,6516,352,434          
2019,5820,424344,5        
2524,5825,42592744,55,3      
3029,5830,42101471284,55,36    
3534,535,5151912176,751395,366  
4039,540,52024172211,75186,51410667,5
4544,545,52529222716,752311,5196,25151167,5
5049,550,53034273221,752816,52411,2520616127,5
5554,455,6  323726,753321,52916,252511217179
6059,460,6  374231,753826,53421,25301626122214
6564,465,5    36,754331,53926,2535213117276,519
7069,470,6    41,754836,54431,25402636223211,524
8079,480,6    51,755846,55441,25503646324221,534
9089,390,7      56,56451,25604656425231,544
10099,3100,7      66,57461,25705666526241,554
110109,3110,7        71,25806676627251,554
120119,3120,7        81,25907686728261,574
130129,2130,8          8090768665,578
140139,2140,8          90100869675,588
150149,2150,8            9610685,598
160159,2160,8            10611695,5108
180179,2180,8              115,5128
200199201              135,5148