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This product is regulated by the following standards:

DIN 938 NF E25-135

Technical data

Standard DIN 938

Studs with stud end ~ 1 d 

 

This standard (DIN 938) specifies dimensions and technical delivery conditions for studs intended for use mainly in steel; with stud end ~ 1 d (lenght of engagement), product grade A with metric coarse thread from M3 to M52 and metric fine thread from M8x1 to M52x3.

Dimensions in mm - source DIN 938

Publication date 12- 2012 Supersedes DIN 938: 02-1995
d thread size M 3 M 4 M 5 M 6 M 7 M 8 M8X1 M 10 M10X1.25 M 12 M12X1.5 M 14 M14X1.5 M 16 M16X1.5 M 18 M18X1.5 M 20 M20X1.5 M 22 M22X1.5
b1 3 4 5 6 7 8 10 12 14 16 18 20 22
b2 (l<=125) 12 14 16 18 20 22 26 30 34 38 42 46 50
b2 (l>125<=200)  18 20 22 24 26 28 32 36 40 44 48 52 56
b2 (l>200)  - - - - - - 45 49 53 57 61 65 69
x1 1.25 1.75 2 2.5 2.5 3.2 3.8 4.3 5.0 5.0 6.3 6.3 6.3
x2 0.7 0.7 9 1 1.25 1.6 1.9 2.2 2.5 2.5 3.2 3.2 3.2
d thread size M 24 M24X2 M 27 M27X2 M 30 M30X2 M 33 M33X2 M 36 M36X3 M 39 M39X43 M 42 M42X3 M 45 M45X3 M 48 M48X3 M 52 M52X3
b1 24 25 30 32 35 38 42 45 48 52
b2 (l<=125) 54 60 66 72 78 84 90 96 102 110
b2 (l>125<=200) 60 66 72 78 84 90 96 102 108 116
b2 (l>200) 73 79 85 91 97 103 109 115 121 129
x1 7.5 7.5 9.0 9 10 10 11 11 12.5 12.5
x2 3.8 3.8 4.5 4.5 5 5 5.5 5.5 6.3 6.3

Dimensions in mm - source DIN 938

Publication date 02- 1995 Supersedes DIN 938: 12 - 1972
d thread size M 3 M 4 M 5 M 6 M 7 M 8 M8X1 M 10 M10X1.25 M 12 M12X1.5 M 14 M14X1.5 M 16 M16X1.5 M 18 M18X1.5 M 20 M20X1.5 M 22 M22X1.5
b1 3 4 5 6 7 8 10 12 14 16 18 20 22
b2 (l<=125) 12 14 16 18 20 22 26 30 34 38 42 46 50
b2 (l>125<=200)  18 20 22 24 26 28 32 36 40 44 48 52 56
b2 (l>200)  - - - - - - 45 49 53 57 61 65 69
x1 1.25 1.75 2 2.5 2.5 3.2 3.8 4.3 5.0 5.0 6.3 6.3 6.3
x2 0.7 0.9 1 1.25 1.25 1.6 1.9 2.2 2.5 2.5 3.2 3.2 3.2
d thread size M 24 M24X2 M 27 M27X2 M 30 M30X2 M 33 M33X2 M 36 M36X3 M 39 M39X43 M 42 M42X3 M 45 M45X3 M 48 M48X3 M 52 M52X3
b1 24 25 30 32 35 38 42 45 48 52
b2 (l<=125) 54 60 66 72 78 84 90 96 102 110
b2 (l>125<=200) 60 66 72 78 84 90 96 102 108 116
b2 (l>200) 73 79 85 91 97 103 109 115 121 129
x1 7.5 7.5 9.0 9 10 10 11 11 12.5 12.5
x2 3.8 3.8 4.5 4.5 5 5 5.5 5.5 6.3 6.3

DIN 938 -Approximate weigth, in kg x1000 pcs, (ρ=7,85 kg/dm3) - commercial items

Publication date 02-1995

d thread size M3
M4
M5
M6
M7 M8
M10
M12 M14 M16 M18 M20 M22 M24
nominal length l                            
18 0.981                          
20 1.09 1.95                        
22 1.2  2.15  3.47                      
25 1.37  2.44  3.93  5.68                    
28 1.53  2.74  4.39  6.35  8.99                  
30 1.64  2.94  4.7  6.79  9.59  12.5                
35    3.43  5.47  7.9  11.1  14.8 23.2              
40    3.93  6.24  9.01  12.6  16.4  26.3 38.8            
45      7.01  10.1  14.1  18.4  29.4  43.2 60          
50      7.78  11.2  15.6  20.4  32.4  47.7  66  89.6        
55        12.3  17.1  22.4  35.5  52.1  72.1  97.5  123      
60        13.4  18.7  24.3  38.6  56.6  78.1  105  133 170    
65          20.2  26.3  41.7  61  84.2  113  143  182  226  
70          21.7  28.3  44.8  65.4  90.2  121  153  195  241 287
75            30.3  47.9  69.9  96.3  129  163  207  256  305
80            32.2  50.9  74.3  102  137  173  219  71  323
85              54  78.8  108  145  183  232  286  340
90              57.1  83.2  114  153  193  244  301  358
95              60.2  87.6  120  161  203  256  316  376
100              63.3  92.1  126  169  213  269  330  394
110                101  139  184  233  293  360  429
120                110  151  200  253  318  390  465
130                  163  216  273  342  420  500
140                  175  232  293  367  450  536
150                    247  313  392  480  571
160                    263  333  417  509  607
170                      353  441  539  642
180                      373  466  569  678
190                        491  599  713
200                        515  629  749
d thread size M27 M30 M33 M36 M39 M42 M45 M48 M52
nominal length l                  
75 392                
80  414                
85  437 553              
90  459  580 718            
95  482  608  752            
100  504  636  785  942          
110  549  691  852  1022  1228        
120  594  747  919  1102  1322 1550 1822    
130  639  802  986  1182  1416  1659  1947 2216  
140  684  858  1054  1262  1509  1767  2072  2358 2837
150  729  913  1121  1342  1603  1876  2197  2500  3004
160  774  969  1188  1421  1697  1985  2321  2642  3170
170  819  1024  1255  1501  1791  2094  2446  2784  3337
180  864  1080  1322  1581  1884  2202  2571  2926  3504
190  909  1135  1389  1661  1978  2311  2696  3068  3671
200  953  1191  1456  1741  2072  2420  2821  3210  3873
220  1043  1302  1591  1901  2259  2637  3071  3494  4171
240  1133  1413  1725  2061  2447  2855  3320  3779  4504
260  1223  1524  1859  2220  2635  3072  3570  4063  4838
280  1313  1635  1994  2380  282  3290  3820  4347  5171
300    1746  2128  2540  3010  3507  4069  4631  5504
320      2262  2700  3197  3725  4319  4915  5838
340      2396  2860  3385  3942  4569  5199  6171
360        3019  3572  4160  4819  5483  6505
380          3760  4377  5068  5767  6838
400          3947  4595  5318  6051  7172

 

Standard NF E25-135

Studs - Metal end ≈ 1d, 1.25 d, 1.5 d, 2d

This standard has been drafted in a way to highlight the studs with an installation length of 1.5 d, the most commonly used. However, it was useful to also provide in this standard studs with implantation lengths of 1 d, 1.25 d and 2 d which correspond to more specific needs.

Dimensions in mm - source NF E25-135

Publication date 12-1986
d thread size M 5 M 6 M 8 M 10 M 12 M 14 M 16 M 18 M 20 M 22 M 24
P Pitch 0.8 1 1.25 1.5 1.75 2 2 2.5 2.5 2.5 3
b (l <=125) 16 18 22 26 30 34 38 42 46 50 54
(l >125) - - - - - 40 44 48 52 56 60
b1 Nominal size (b1=1d) 5 6 8 10 12 14 16 18 20 22 24
b1 Nominal size (b1=1.25d) 6.25 7.5 10 12.5 15 17.5 20 22.5 25 27.5 30
b1 Nominal size (b1=1.5d) 7.5 9 12 15 18 21 24 27 30 33 36
b1 Nominal size (b1=2d) 10 12 16 20 24 28 32 36 40 44 48

ds max

5 6 8 10 12 14 16 18 20 22 24
ds min Type A 4.82 5.82 7.78 9.78 11.73 13.73 15.73 17.63 19.67 21.67 23.67
Type B - - - - - - 15.57 17.57 19.48 21.48 23.48
a max 2 2.5 3.2 3.8 4.3 5.0 5.0 6.3 6.3 6.3

7.5

Full list of Suppliers of Studs, with engagement length ≈1d

Italy

Manufacturer and distributor of Studs, hexagon head screws, socket cap screws, washers and eye bolts

China

Manufacturer of threaded rods, studs

France

IBF

Manufacturer of threaded rods, anchor rods, tie bars and studs

Italy

Manufacturer of studs and stud bolts

Germany

Manufacturer of standard and special fasteners

Italy

Distribution and production of standard and special fasteners.

Studs and bolts in steel 8.8-B7-L7-B8-Duplex-carbon steel.

Nuts and bolts from diameter 2 to 100. Wide product range on stock in steel, HDG, brass and stainless steel A2 and A4.

Italy

Founded in 1969, Buora D.P.U. is a distributor certified following ISO 9001.

The company offers the complete range of high strength fasteners, ready on stock, both coarse and fine pitches with metric and inch threads.

Distributor of prestigious brands such as UNBRAKO and NORD-LOCK, for Buora D.P.U. the service always comes first, therefore there is not minimum quantity required.

South Korea

World class manufacturer of bespoke hot forged/heat treated Industrial bolts & nuts and Marine engine components.

Italy

Supplier of nuts, bolts and special drawing parts, both forged and turned.

UNI EN ISO 9001:2015 certified company.

UK

Manufacturer of studs and allthreads,  sizes from 4mm up to 36mm (3/16' TO 1 ½') diameter and from 15MM up to 1 meter in length.

Italy

Manufacturer of studs, eyebolts and special products

Afghanistan

Manufacturer of threaded rods and stud bolts

Spain

Manufacturer specialized in special cold formed fasteners for the automotive sector

Threads up to M27 and length up to 180 mm.

Germany

TÜV-certified manufacturer in compliance with AD-Merkblatt WO/TRD100, DIN EN ISO 9002. Quality assurance Certificate following the norm 97/23/EG. We stand for highest quality, customer satisfaction and short-term delivery.  Stud screws (DIN 938, DIN 939, DIN 835, DIN 940), threaded elements, threaded bolts (DIN 976A und B), threaded pins (DIN 976-1), headless screws (DIN 551, DIN 553, DIN 427, DIN 417), tie bars, drop-in anchors, weld pins and butt welding ends, inches and fine pitch threads (UNC, Whitworth), special parts.

Italy

Manufacturer of double-end studs, turned special fasteners in stainless steel and exotic alloys.

Italy

Manufacturer of  hooks, eyebolts, U-bolts, studs, log bolts, foundation clamps, rods, pins, tie-rods,  threaded bars and special chamfered-end bars

Afghanistan

Manufacturer of wire, bent wire parts, threaded rods and studs

Afghanistan

Manufacturer of threaded rods, foundation bolts and studs

Germany

Scharwath Metallwaren is specialized in all kinds of fasteners in steel and stainless steel.

We are a manufacturer of U-bolts, foundation bolts, welding studs, double end studs, anchor screws, threaded parts, threaded rods, hose clamps, bent wire parts.

We manufacture according DIN norms and following customer-specific drawings. Small to large batch sizes, in all common grades and surfaces. Fast response times and delivery for the desired quality.

Germany

Manufacturer of hot forged fasteners, stud bolts with reduced shank DIN 2510, DIN 2509

Hungary

Distributor of plates, junctions, hook nails, wood fixings, studs and stud bolts

UK

Manufacturing of special fasteners and machined (inconel, monel, super duplex, hastelloy, titanium, nimonic, B16 and Durehete)  

Manufacturing, stocking and distributing petro-chemical grade studbolt assemblies and fasteners.

Germany

Manufacturer of Tools for tightening and loosening large bolts. The production range includes round nuts and stud bolts

UK

Manufacturer of screws, threaded studs and threaded rods in metric and inch sizes

India

Manufacturer of double ended studs, stud bolts and hexagon nuts. ASTM, DIN and ISO norms.

M8 – M100 (Metric)

5/16” – 4” (Inches)

Brazil

Producer of rivets, studs, bolts and special parts for automotive

Afghanistan

Manufacturer of threaded rods, foundation bolts, stud bolts and bent parts

Italy

Hot forging of fasteners, in special steels, mainly for “Oil & Gas” sector.

Our product range includes:

• hexagon head screws, socket cap screws and 12-point screws.

• hexagon nuts and 12-point nuts

• plugs

• special parts following customer requirement

Italy

Producers of studs, dowelscrews, u-bolts, tie rods turned and milled according to customers drawing.

Anchors for galleries forwork

Italy

Manufacturer specialized in hot forming and turned fasteners

Germany

Manufacturer of standard and special screws, hot forged, up to M64

Germany

Manufacturer and distributor of automatic lathe parts, bolts and accessories

Afghanistan

Manufacturer of hexagon bolts and screws (from M6 up to M42), hexagon nuts (from M6 up to M42), and solid rivets (Ø6 – Ø30). GOST Norms

 

Afghanistan

Manufacturer of threaded rods, stud bolts, U-bolts, bent parts, studs and foundation bolts

Germany

Manufacturer specialized in stud bolts as per DIN 938, 939, 940, 835 and as per drawing. From M5 to M36 with lenghts from 18mm to 800mm

India

Manufacturer of special screws and studs from M4 to M50 (4.6, 6.8, 8.8, 10.9, 12.9, B7, etc.)

Iran

Manufacturer of stud bolts and fasteners both standard and special. Oil&gas and railway sector

Germany

Manufacturer of double end stud, stud bolts, both metric and inch sizes

China

Manufacturer of high stength fasteners and fasteners for petrochemical sector (ASTM A193/A320/A325)

ASTM A193 Grade B7, B7M, B8 (304 SS), B8M (316 SS). B8T, B8MX, B8TX, B16 stud bolt. A320 L7, L7M, A453 660A, 660B, 660C, 660D, A325 & A490 steel structure bolt set and assembling A194 and A563 series heavy hex nut

Italy

Manufacturer of turned fasteners and parts, both standard and special

Germany

Manufacturer of stud bolts and threaded bars

Argentina

Manufacturer of double-end studs, wheel bolts, screws and nuts for automotive, agricultural, road-building machinery and industrial sectors.

Special pieces according to costumers requirements.

Qualities: 8.8, 10.9, 12.9, G5&G8. Pieces manufacture by cold forging, diameters from 5mm to 22mm (¼” to ?”).

Metallographic Laboratory in our facilities.

ISO 9001 Certificate.

Venezuela

Manufacturer of fasteners for the automotive and industrial sector

Czech Republic

Producer of threaded rods, trapezoidal rods, studs, timber connectors

Italy

Manufacturer of threaded rods with total and partial thread, stud bolts, U-bolts, bent parts, hooks, small metal parts


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