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This product is regulated by the following standards:

DIN 939 NF E25-135

Technical data

Standard DIN 939

This standard (DIN 939) specifies dimensions and technical delivery conditions for studs intended for use mainly in cast iron; with stud end ~ 1,5 d (lenght of engagement) product grade A with metric coarse thread from M4 to M52 and metric fine thread from M8x1 to M52x3.

Dimensions in mm - source DIN 939

Publication date 02-1995 - Supersedes DIN 939: 02-1972

d thread size

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 M 24 M24X2
b1 5 6.5 7.5 9 10 12 15 18 20 22 25 28 30
b2 (l<=125) 14 16 18 20 22 26 30 34 38 42 46 50 54
b2 (l>125<=200) 20 22 24 26 28 32 36 40 44 48 52 56 60
b2 (l>200) - - - - - 45 49 53 57 61 65 69 73
x1 1.75 2 2.5 2.5 3.2 3.8 4.3 5.0 5.0 6.3 6.3 6.3 7.5
x2 0.9 1 1.25 1.25 1.6 1.9 2.2 2.5 2.5 3.2 3.2 3.2 3.8

Dimensions in mm - source DIN 939

Publication date 02/1995

d thread size

M 27 M27X2 M 30 M30X2 M 33 M33X2 M 36 M36X3 M 39 M39X3 M 42 M42X3 M 45 M45X3 M 48 M48X3 M 52 M52X3
b1 35 38 42 45 50 52 58 60 65
b2 (l<=125) 60 66 72 78 84 90 96 102 110
b2 (l>125<=200) 66 72 78 84 90 96 102 108 116
b2 (l>200) 79 85 91 97 103 109 115 121 129
x1 7.5 9.0 9 10 10 11 11 12.5 12.5
x2 3.8 4.5 4.5 5 5 5.5 5.5 6.3 6.3

DIN 939 -Approximate mass, in kg x1000 pcs, (ρ=7,85 kg/dm3) - commercial items

Publication date 02-1995

d thread size
M4
M5
M6
M7 M8
M10
M12 M14 M16 M18 M20 M22 M24
nominal length l                          
12                          
14                          
16                          
18                          
20 2.03                        
22 2.23 3.65                      
25 2.52 4.11 5.85                    
28 2.82 4.57 6.52 9.49                  
30 3.02 4.88 6.96 10.1 13.1                
35 3.51 5.65 8.07 11.6 15.31 24.2              
40 4.01 6.42 9.18 13.1 17 27.2 41            
45   7.19 10.2 14.6 19 30.3 45.4 64          
50   7.96 11.4 16.1 21 33.3 49.9 70 94.9        
55     12.5 17.7 22.9 36.4 54.3 76.1 103 130      
60     13.6 19.2 24.9 39.5 58.8 82.1 111 140 180    
65       20.7 26.9 42.6 63.2 88.2 119 150 192 242  
70       22.2 28.9 45.7 67.6 94.2 126 160 205 257 305
75         30.8 48.8 72.1 100 134 170 217 272 323
80         32.8 51.8 76.5 106 142 180 229 287 341
85           54.9 81 112 150 190 241 302 358
90           58 85.4 119 158 199 254 317 376
95           61.1 89.8 124 166 210 266 332 394
100           64.2 94.3 130 174 220 279 346 412
110             103 143 190 240 303 376 447
120             112 155 205 260 328 406 483
130               167 221 280 353 436 518
140               179 237 300 377 466 554
150                 253 320 402 496 589
160                 269 340 427 525 625
170                   360 451 555 660
180                   380 476 585 696
190                     501 615 731
200                     525 645 767

DIN 939 -Approximate mass, in kg x1000 pcs, (ρ=7,85 kg/dm3) - commercial lengths

Publication date 02-1995

d thread size M27 M30 M33 M36 M39 M42 M45 M48 M52
nominal length l                  
50                  
55                  
60                  
65                  
70                  
75 430                
80 452                
85 475 591              
90 497 619 776            
95 520 646 810            
100 542 674 843 1011          
110 587 730 910 1091 1326        
120 632 785 977 1171 1420 1647 1693    
130 677 841 1045 1251 1514 1756 2088 2364  
140 722 896 1112 1331 1607 1865 2213 2506 3027
150 767 952 1179 1411 1701 1973 2338 2648 3194
160 812 1007 1246 1490 1795 2082 2462 2790 3360
170 857 1062 1313 1570 1889 2191 2587 2932 3527
180 902 1118 1380 1650 1982 2300 2712 3074 3694
190 947 1173 1447 1730 2076 2408 2837 3216 3861
200 992 1229 1515 1810 2170 2517 2962 3358 4027
220 1082 1340 1649 1970 2358 2735 3211 3642 4361
240 1172 1450 1784 2130 2545 2952 3461 3927 4694
260 1262 1562 1918 2289 2733 3170 3711 4211 5028
280 1352 1672 2052 2449 2920 3387 3961 4495 5361
300   1784 2186 2609 3108 3605 4210 4479 5694
320     2321 2769 3295 3822 4460 5063 6028
340     2455 2929 3483 4040 4710 5374 6361
360       3088 3670 4257 4959 5631 6695
380         3858 4475 5209 5915 7028
400         4045 4692 5459 6199 7362

 

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 ~1,25d

.
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.

France

Fixner is specialized in the export of a wide range of fasteners products, industrial supplies, and tools.

We offer a wide range of bespoke fasteners and screws and bolts according to DIN, ISO, EN, NF, ANSI, ASME and ASTM standards.

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

China

Manufacturer of threaded rods, metric and inch sizes

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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