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316 Stainless Steel Square U Bolts manufacturer in India

What is the Minimum Bend Radius of U Bolt?

The different steel U Bolts are used in different application perspectives. The different types help achieve different tasks. The U bolt is used in applications where the nuts are fastened on the same side of the surface but the bolt has to connect through different components. As a leading U Bolt manufacturer in India, Jignesh Steel manufactures the different types. The bending radius of the U bolt is considered critical. There are different types such as the square bend U bolt. The minimum bending radius is twice the diameter of the bent rod or bolt.

Why Stainless Steel U Bolt should be formed after the threads are rolled?

As one of the leading Stainless Steel U Bolt manufacturers we produce the bolts in different grades of the material. There are 304, 316 and other types of stainless steel materials used for the production. The 316 Stainless Steel Square U Bolts are formed after the threads are rolled on them. The thread rolling reshapes the bolt with threads. To make sure that the threads are in place and strengthened, the forming operation takes place after threading. If the 304 Stainless Steel U Bolts are formed before threading, the threads might crack while rolling.Also, the newly made threads would not be stronger as the deformed surface is not formed.

Why is chamfering done on U bolts?

The Square Bend SS U-Bolts and other types have to stay in place so that they are chamfered. The operation creates a furrow or bevel on the end of the bolts and keeps the bolt threads intact while allowing for the nuts to enter the threaded area. There are different types such as the Stainless Steel Round U Bolt which are the most commonly used. The square U bolts are less common but are used in specific application types. Please feel free to contact us for the different types such as the Stainless Steel V Bolts and their prices.

304 Stainless Steel V Bolts & 316 SS U Bolts supplier in Mumbai

Stainless Steel U Bolts
Stainless Steel U Bolts Price List India

Check Dimensions & price list of Stainless Steel Round U Bolt as per DIN EN ISO 4032

SPRING U-BOLT INR 145/Kg

Call us or send us an email to sales@jigneshsteel.com for more details.

Stainless Steel U Bolts Specifications

1.4401 / 1.4571 AISI 316 / 316 Ti Long U Bolt Clamp & Marine grade stainless steel u bolts available in metric size M6 M10 M12

ANSI - Stainless Steel U Bolts American Standard ANSI
DIN - Stainless Steel U Bolts German Standard DIN 3570
ISO Standard ASTM A193 Grade B7m U Bolts ISO 4014 / 4017
SAE Specification
  • U Bolts: SAE J429
  • Nut : SAE J995
316 Stainless Steel U Bolts Size Metric
  • Dia: M10 - M110
  • Length: 12 - 1200MM
Stainless Steel 304 U Bolts Size Inch
  • Dia: 1/2" - 4.0"
  • Length: 1/2" - 52"
Stainless Steel U Bolts International Specification IS, ANSI, ASTM, DIN, ISO, JIS, GB, ASME, BS, UNI, CSN, EU, IFI, PN,
U Bolts Standard
  • American ASME
  • Indian IS
  • International ISO
  • American SAE
  • German DIN
  • Spanish CSN
  • British BS
  • Italian UNI
  • Polish PN
  • European EU
A193 Grade B8 Class 2 U Bolts Standard Sizes M10, M4, M16, M36 M2.5, M6, M30, M12, M8, M14, M2, M3, M20, M24, M5 to M160
8.8 Grade U Bolts Threads Unified national coarse (UNC), Unified national fine (UNF), Unified national extra fine (UNEF), UNJC and UNJF threads, UNK threads, UNR threads, Constant-pitch threads
SS 316 A4-80 U Bolts Head Drive Phillips, Slotted, Phillips/Slot, Six-Lobe
MTC (Manufacturer Test Certificate) EN 10204 / 3.1
ASTM A193 Grade B8 U Bolts Production Process
  • M2-M24: Cold Forging, Hot forging
  • M24-M100, machining and CNC for Customized connecting element
SA 193 Gr B8m U Bolts Packing
  • Wooden Pallet, Canton, Carton / Small Box or as required
  • Carton size : 36* 24 *16 CM & 36 *24 *12 CM  or as required
  • Pallet size: Standard Euro Pallet 110* 80 *90 CM
Free Sample Yes if we have in stock
Payment Terms Paypal, Western Union, T/T (Telegraphic Transfer or Wire Transfer), L/C or Trade Assurance 30% deposit & balance before shipping
Preferred U Bolts Drawing Formats JPEG, PDF, CAD, STP, IGS
Manufacturing Process
  • Heading
  • Machining
  • Threading
  • Heat treatment
  • Plating
  • Baking
  • QA
  • Package
  • Shipping
Delivery Time 7-15 working days as usual, It will based on the detailed order quantity.
Port of Dispatch Mumbai or Kalamboli ports in Maharashtra state of India
U Bolts Plating Specifications
  • ASTM A153 Zinc coating (hot dip)
  • ASTM B695 zinc coating
  • ASTM F1941 Electrodeposited coatings (Zinc plating).
  • ASTM F2329 Zinc coating, hot dip
Types of U Bolts

Exporter & supplier of High Tensile Heavy Duty U Bolts in Grade 8 as per DIN 898/ 3570/ 3570 a, AMEC approved  U Bolt manufacturer in India

Stainless Steel U Bolts

Stainless Steel U Bolts

316 Stainless Steel Square U Bolts

316 Stainless Steel Square U Bolts

304 Stainless Steel Round U Bolts

304 Stainless Steel Round U Bolts

12.9 Grade High Tensile Long U Bolts

12.9 Grade High Tensile Long U Bolts

SA 193 Gr B7 Alloy Steel Flat U Bolts

SA 193 Gr B7 Alloy Steel Flat U Bolts

ASTM A320 L7 Heavy Duty U Bolts

ASTM A320 L7 Heavy Duty U Bolts

U Bolts Material and Grades
Carbon Steel U Bolts AISI 1018, AISI 1045, AISI 1117, AISI 12L14, AISI 1215, ASTM A36 U Bolts, ASTM A29, A108, A549, SAE J429, ASTM A307 Grade A/ B/ C
High Tensile U Bolts Grade 4.8, grade 8.8, grade 10.9, grade 12.9, grade 4.6, Grade 5.8, Grade 9.8 U Bolts
Stainless Steel U Bolts SS 201, SS 303, SS 304, SS 304L, SS 316, SS 316L, 316H, SS 317L, SS 321, SS 304H, SS 310, SS 410, 347, SS 420 U Bolts, 904L, 18-8 Stainless Steel, Black Stainless Steel, A2 -70, A2 -80, A4 -70, A4 -80 U Bolts, A193 B8C (347), A193 B8T (321), A193 B6 (410)
Martensitic Stainless Steel U Bolts 15-5 PH (UNS S15500), 17-4 PH (UNS S17400), 17-7 PH (UNS S17700)
ASTM A193 U Bolts ASTM A193 B6, B7, B7m, B8T, SA 193 B8, B8 Class 1/ Class 2, B8M Class 2, A193 B16, SA 193 Grade B6X U Bolts
ASTM A449 U Bolts ASTM A449 Type 1 (Plain carbon steel, alloy steel, carbon boron steel, alloy boron steel)
ASTM F593 U Bolts 303, 304, 304L, 305, 384, XM1, 18-9LW, 302HQ, 303Se, 316, 316L, 321, 347, 430, 430F, 410, 416, 416Se, 431, 630 (17-4) (Austenitic, Ferritic, Martensitic & Precipitation Hardening)
All ASTM Standard of U Bolts ASTM A320, A325, A36, A320 L7 U Bolts, L7m, A320 Grade B8, A320 B8m, A307, A540, A563, A354, A490, A593, F593C, F593D, F593G U Bolts
ASTM F3125 Heavy hex structural bolts This includes A325, A325M, A490, A490M, F1852, and F2280 heavy hex structural bolts, A325 Type 1, Type 2, Type 3
Alloy Steel U Bolts AISI 4140, AISI 4130, ASTM A193 B7/ B8 / B8M/ B8 Class 2/ B8M Class 2, ASTM A320 L7/ L43
Spring Steel U Bolts C55S, C60S, C67S, C75S, C100S, 51CrV4, 80CrV2 U Bolts
Brass U Bolts 3602 / 2604 / H59 / H62, C36000 , C37700 ( HPb59), C38500( HPb58), C27200(CuZn37), C28000 (CuZn40), Copper (99% Cu)
Free Cutting Steel U Bolt 1213, 12L14,1215
Aluminum U Bolt Al6061, Al6063, 5052 /6061/ 6063 / 2017 / 7075
Titanium U Bolt ASTM B348 / ASME SB348, Titanium Gr. 1, Titanium Gr. 2, Titanium Gr. 4, Titanium Gr. 5, Titanium Gr. 7 U Bolt
UNS  R50250/GR.1 | R50400/GR.2 | R50550/GR.3 | R50700/GR.4 | GR.6 |R52400/GR.7 | R53400/GR.12 | R56320/GR.9 |R56400/GR.5
Copper U Bolt T1, T2, C10100, C10200, C10300, C10400, C10500, C10700, C10800, C10910,C10920, TP1, TP2, C10930, C11000, C11300, C11400, C11500, C11600, C12000,C12200, C12300, TU1, TU2, C12500, C14200, C14420, C14500, C14510, C14520, C14530, C17200, C19200, C21000, C23000, C26000, C27000, C27400, C28000, C33000, C33200, C37000, C44300, C44400, C44500, C60800, C63020, C68700, C70400, C70600, C70620, C71000, C71500, C71520, C71640, etc
Copper Nickel U Bolt ASTM / ASME SB 151, Copper Nickel 90/10 (C70600 ), Cupro Nickel 70/30 (C71500), UNS C71640
Inconel U Bolt ASTM B166 / ASME SB 166, Inconel Alloy 600 (UNS No. N06600), 601, 625 (UNS No. N06625), 718, 783, 690, x750 U Bolt
Hastelloy U Bolt ASTM B564 / ASME SB564, Hastelloy C276 (UNS N10276), C22 (UNS N06022), C4, C2000, B2, B3, X U Bolt
Incoloy U Bolt ASTM B564 / ASME SB564, Incoloy 800, 800H, 800HT (UNS N08800), 825 (UNS N08825), 925 U Bolt, ASTM A453 Grade 660, ASTM A638 grade 660 Type 1, ASTM A286 Grade 660
Monel U Bolt ASTM B564 / ASME SB564, Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500)
Nickel U Bolt ASTM B564 / ASME SB564, Nickel 200, Nickel 201, Nickel 205, Nickel 205LC
Alloy 20 U Bolt ASTM B462 / ASME SB462, Carpenter® 20 Alloy, Alloy 20Cb-3
Duplex Steel U Bolt Duplex 2205, UNS S31803 / S32205 A479 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61 U Bolt
Super Duplex U Bolt Super Duplex 2507, UNS S32750 / S32760 A479 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61 U Bolt
254 Smo U Bolt ASTM A479 / ASME SA479, SMO 254/6Mo, UNS S31254, DIN 1.4547
Nimonic U Bolt Nimonic 75, Nimonic 80A, Nimonic 90
Phosphor bronze U Bolts PB102 (CW451K / C51000), PB104 (CW453K / C52400), PB1 (CC481K / C91700), LG1 (CC490K / C84400), LG2 (CC491K / C83600), LB4 (CC494K / C93500), SAE 660 (CC497K / C93200)
Alumunum bronze U Bolts CA104 (CW307G / BSB23 / DTD197A), DEF STAN 02-833 (NES 833  / DGS 1043), DEF STAN 02-834 (NES 834 / DGS 1044/ CW301G), C63000 (AMS4640 / CW307G), C63200 (ASTM B150), AB2 (CC333G)
Other U Bolts material Tin bronze, Lead bronze, Stellite, Molybdenum, Tantalum, Zirconium, Austenitic Steel, Chromium Vanadium Steel, Super Austenitic Steel, Weathering Steel U Bolts
316 Stainless Steel U Bolts Coating and Surface Treatment
  • Xylon Coated U Bolts
  • Phosphate Coated U Bolts
  • Hot Dipped Galvanized U Bolts
  • Teflon Coated U Bolts
  • Zinc Coated U Bolts
  • Cadmium Coated U Bolts
  • Ptfe Coated (Teflon) U Bolts
  • Black Oxide
  • Polish
  • Anodizing
  • Passivation
  • Hot-dip galvanizing
  • Rust preventive oil
  • Sand blasting
  • Black oxide coating
  • Heat-disposing
  • Zinc white, (yellow, black, blue), black oxide,
  • Dacroment, Geometry, plated zinc-nickel, anodizing, nickel plated,
  • Stainless steel U Bolts: Passivated Self-Colour, Bright Zinc Plated (BZP),
  • Hot Dip Galvanised (HDG), Sherardized, DACROMET and Mechanically Applied coating
  • Electroplating (color, blue, white, black zinc, Ni, Cr, tin, copper, silver)
Stainless Steel 304 U Bolts Dimensions

DIN 3570

U Bolts Dimensions

dimensions in mm

Size 23 30 38 46 52
D1 20 - 21 25 - 26,9 30 - 33,7 38 - 42,4 44,5 - 48,3
B1 30 40 40 50 50
D2 10 10 10 10 10
D3 M10 M10 M10 M10 M10
E 33 40 48 56 62
H1 60 70 76 86 92
Size 64 82 94 120 148
D1 57 - 60,3 76,1 88,9 108 - 114,3 133 - 139,7
B1 50 50 50 60 60
D2 12 12 12 16 16
D3 M12 M12 M12 M16 M16
E 76 94 106 136 164
H1 109 125 138 171 191
Size 176 228 282 332
D1 159 - 168,3 216 - 219,1 267 - 273 318 - 323,9
B1 60 70 70 70
D2 16 20 20 20
D3 M16 M20 M20 M20
E 192 248 302 352
H1 217 283 334 385
AISI 410 Stainless Steel U Bolts Sizes

Automotive Galvanized Square U bolt sizes

Specification Cover weight Thread length Thick thread Inner width Total height Center distance
6*20*50 0.034 30 6 20 50 26
6*25*35 0.029 20 6 25 35 31
6*25*50 0.034 30 6 25 50 31
6*30*80 0.05 50 6 30 80 36
6*35*60 0.042 40 6 35 60 41
6*30*55 0.039 30 6 30 55 36
6*30*110 0.058 70 6 30 110 36
6*42*70 0.057 40 6 42 70 48
6*42*80 0.0558 40 6 42 80 48
6*50*80 0.054 50 6 50 80 56
6*50*150 0.078 70 6 50 150 56
6*52*45 0.07 20 6 52 45 58
6*60*65 0.078 35 6 60 65 66
8*25*70 0.089 40 8 25 70 33
8*25*90 0.105 50 8 25 90 33
8*35*80 0.088 40 8 35 80 43
8*35*100 0.1084 60 8 35 100 43
8*40*80 0.084 40 8 40 80 48
8*40*100 0.097 60 8 40 100 48
8*40*120 0.108 60 8 40 120 48
8*50*80 0.113 40 8 50 80 58
8*50*100
0.13 50 8 50 100 58
8*50*130 0.152 70 8 50 130 58
8*50*150 0.158 70 8 50 150 58
8*60*100 0.131 50 8 60 100 68
8*60*120 0.146 60 8 60 120 68
8*60*150 0.161 80 8 60 150 68
8*70*120 0.155 70 8 70 120 78
8*70*160 0.177 70 8 70 160 78
8*80*130 0.168 60 8 80 130 88
8*82*75 0.135 40 8 82 75 90
8*92*80 0.152 50 8 92 80 100
8*90*130 0.19 70 8 90 130 98
8*90*180 0.212 80 8 90 180 98
8*100*150 0.2 70 8 100 150 108
8*42*140 0.1256 50 8 42 140 50
8*45*100 0.096 35 8 45 100 53
8*45*150 0.128 60 8 45 150 53
8*50*60 0.1032 30 8 50 60 58
8*55*100 0.1285 50 8 55 100 63
8*80*100 0.146 50 8 80 100 88
8*100*100 0.166 60 8 100 100 108
8*120*160 0.309 70 8 120 160 120
Uses and application of 12.9 Grade U Bolt
  • Oil & Gas Industries
  • Petroleum Industries
  • Nuclear Energy Sector
  • Chemical Industry
  • Aerospace Industry
  • Defence Industry
SA 193 Gr B7 U Bolt Weight Chart

Carbon & Stainless Steel

Pipe Size U-Bolt Clamp Description Thread Size Centres (N) (M) Thread Length (K) S (MAX) Max. Load up to 3400C Item Weight
Nominal Size Outside Diameter (A)
NB mm mm mm mm mm kN kg
15 21.3 15NB M8 30 50 25 7 0.68 0.07
20 26.7 20NB M8 35 60 25 10 0.54 0.08
25 33.4 25NB M8 45 65 25 10 0.43 0.08
32 42.2 32NB M8 55 75 25 10 0.34 0.09
40 48.3 40NB M10 60 90 35 16 0.60 0.18
50 60.3 50NB M10 75 100 35 16 0.48 0.20
65 76.1 65NB M12 90 130 45 19 0.70 0.34
80 88.9 80NB M16 105 150 50 19 1.50 0.70
100 114.3 100NB M16 135 175 50 19 1.17 0.81
125 141.3 125NB M16 160 200 50 19 0.94 0.91
150 168.3 150NB M20 190 235 55 19 1.52 1.69
175 193.7 175NB M20 215 270 55 19 1.32 1.85
200 219.1 200NB M20 245 295 55 19 1.17 2.07
225 244.5 225NB M20 266 315 60 19 1.05 2.18
250 273.0 250NB M20 300 350 60 22 0.94 2.43
300 323.9 300NB M20 350 400 60 22 0.79 2.75
350 355.6 350NB M24 385 440 65 22 1.25 4.38
400 406.4 400NB M24 435 500 65 22 1.09 4.92
450 457.2 450NB M24 485 540 70 22 0.97 5.32
500 508.0 500NB M24 540 600 70 22 0.87 5.87
550 559.0 550NB M24 584 650 70 22 0.73 6.34
600 609.6 600NB M24 640 700 70 22 0.67 6.81
650 660.4 650NB M24 690 740 70 24 0.62 7.20
700 711.2 700NB M30 750 810 80 24 1.18 12.49
750 762 750NB M30 800 860 80 24 1.10 13.22
800 812.8 800NB M30 850 910 80 24 1.04 13.95
850 863.6 850NB M30 900 960 80 24 0.98 14.68
900 914.4 900NB M30 950 1010 80 24 0.93 15.41
1000 1016.0 1000NB M30 1050 1060 80 24 1.56 24.94
How ASTM A320 L7 U Bolt is measured?

How ASTM A320 L7 U Bolt is measured?

Stainless Steel A2-70 G304 U Bolt Testing Equipment

U Bolt Measuring Instruments and Equipment

  • Micrometer
  • Thread gauge
  • Smooth plug gauge
  • Roughness tester
  • Image measuring instrument
  • Coordinate Measuring Machine
  • Routine inspection of calipers