
ASTM A193 Bolts Overview
| Grade | ASTM A193 Bolts |
|---|---|
| Manufacturing Standard | ASME B18.2.1, ASME B18.6.3, ANSI B1.1, GB5783, IS:1364, BS 3692, UNI 5737 |
| ISO Standard | ISO 4017, ISO 4033, ISO 4032, ISO 4014, ISO 7380 |
| DIN Standard | DIN 931, DIN 934, DIN 933, DIN 603, DIN 912, DIN 970, DIN 6923, DIN 7982, DIN916, DIN 7981, DIN 7985, DIN 913 |
| Threads Specification | UNF-3B, UNC, UNF, 8UN, UNJF-3A, UNS, NPT, NPTF, BSF, BSW, UNEF, Metric Fine, Metric Course |
| Standard Sizes in mm | M4, M5, M6, M8, M10, M12, M14, M16, M20, M24, M27, M30, M36 |
ASTM A193 Material suppliers in UAE
ASTM A193 Bolts Specifications
Metric Sizes : M2 – M56, 3/2″ – 2″
Heads : Square, Round, Hex flange, Hex Head, Triangular, Flat, T-head
ASTM A193 Fasteners Type : Hex Bolts, Nuts, Washers, Screws
Make : Sundaram, TVS, UNBRAKO, LPS, BOLTMASTER, PFL, Fischer, DFL, VIF, BOSSARD
Buy Directly from ASTM A193 Bolts suppliers in UAE
100% Tested ASTM A193 Bolts with MTC EN 10204/3.1
Does the length of an ASTM A193M Heavy Hex Bolt include the head ?
- No, the length of an ASTM A193M Heavy Hex Bolt doesn’t include the head
Buy ASTM A193 Fasteners and SA193 Hex Bolt in 1/4 to 7 inches at lowest price in Dubai
A193M Hex Head Bolt Size Chart
| Thread Sizes (D1) | S | E | K |
|---|---|---|---|
| M30 | 46 | 50.85 | 18.7 |
| M27 | 41 | 45.2 | 17.0 |
| M24 | 36 | 39.98 | 15.0 |
| M22 | 32 | 35.72 | 14.0 |
| M20 | 30 | 33.53 | 12.5 |
| M18 | 27 | 30.14 | 11.5 |
| M16 | 24 | 26.75 | 10.0 |
| M14 | 22 | 24.49 | 8.8 |
| M12 | 19 | 21.1 | 7.5 |
| M10 | 17 | 18.9 | 6.4 |
| M8 | 13 | 14.38 | 5.3 |
| M6 | 10 | 11.05 | 4.0 |
| M5 | 8 | 8.79 | 3.5 |
| M4 | 7 | 7.66 | 2.8 |
| M3 | 5.5 | 6.01 | 2.0 |
Why Is Selecting the Right Grade Important ?
- Ensure structure the integrity of project
- Can withstand working pressure condition
- Match’s the operating temperature requirement
- Improve service life & durable
- Prevents material failure & premature wear
- Enhances safety & reliability
- Resists corrosion environment
Compatibility Chart for ASTM A193 Fasteners
| Grades | A194 Heavy Hex Nut Grade |
|---|---|
| Gr B6 | 6 |
| Gr B5 | 3 |
| Gr B16 | 4 / 7 / 16 |
| Gr B7M | 2HM |
| Gr B8M (Class 1 & 2) | 8M |
| Gr B8 (Class 1 & 2) | 8 |
| Gr B7 | 2H / 4 / 7 |
Different Material of ASTM A193 Bolts
Check ASTM A193M Heavy Hex Bolt and ASME SA193 U-bolts dimensions, specifications, grades and torque chart
ASME SA193 U-bolts Dimensions Chart

| Bolt Diameter | Nominal Sizes | Hook (C) | Length (L) | Thread Length (T) |
|---|---|---|---|---|
| 1 | 36 | 36 1/8 | 39 11/16 | 4 3/4 |
| 1 | 30 | 30 1/8 | 33 11/16 | 4 3/4 |
| 1 | 24 | 24 1/8 | 27 11/16 | 4 3/4 |
| 1 | 20 | 20 1/8 | 23 11/16 | 4 3/4 |
| 1 | 18 | 18 1/8 | 21 11/16 | 4 3/4 |
| 7/8 | 16 | 16 1/8 | 19 5/16 | 4 1/4 |
| 7/8 | 14 | 14 1/8 | 17 5/16 | 4 1/4 |
| 7/8 | 12 | 12 7/8 | 16 1/16 | 4 1/4 |
| 3/4 | 10 | 10 7/8 | 13 13/16 | 4 |
| 5/8 | 8 | 8 3/4 | 11 1/2 | 3 3/4 |
| 5/8 | 6 | 6 3/4 | 9 1/2 | 3 3/4 |
| 1/2 | 5 | 5 5/8 | 7 13/16 | 3 |
| 1/2 | 4 | 4 9/16 | 6 13/16 | 3 |
| 1/2 | 3 1/2 | 4 1/16 | 6 5/16 | 3 |
| 1/2 | 3 | 3 9/16 | 5 13/16 | 3 |
| 1/2 | 2- 1/2 | 2 15/16 | 5 1/4 | 3 |
| 3/8 | 2 | 2 7/16 | 4 1/2 | 2- 1/2 |
| 3/8 | 1- 1/2 | 2 | 4 | 2- 1/2 |
| 3/8 | 1- 1/4 | 1- 11/16 | 3- 3/4 | 2 3/8 |
| 1/4 | 1 | 1 3/8 | 3 7/16 | 2 3/8 |
| 1/4 | 3/4 | 1 1/8 | 3 5/16 | 2 3/8 |
| 1/4 | 1/2 | 15/16 | 3 1/4 | 2 3/8 |
Advantages of USing ASTM A193 Material
- Excellence Mechanical Property
- Widely Use In Variou Industrial Equipment
- Structural Connection
- Withstand Higher Temperature & Pressure
| Bolt Dia | Nut Size | Moly Lube | Nickel Lube | Copper Lube | Machine Oil | Dry |
|---|---|---|---|---|---|---|
| u=0.085 | u=0.100 | u=0.160 | u=0.400 | |||
| 2-1/8″ | N/A | 4790 | 7618 | 11150 | 28816 | |
| 1-7/8″ | 2-15/16″ | 3292 | 8324 | 5204 | 7596 | 19550 |
| 1-5/8″ | 2-9/16″ | 2142 | 5682 | 3364 | 4890 | 12520 |
| 1-3/4″ | 2-3/4″ | 2676 | 3668 | 4218 | 6144 | 15776 |
| 1-1/2″ | 2-3/8″ | 1674 | 4602 | 2614 | 3792 | 9274 |
| 1-1/4″ | 2″ | 966 | 2850 | 1492 | 2150 | 5440 |
| 2″ | 3-1/8″ | 3994 | 1622 | 6334 | 9260 | 23884 |
| 1-3/8″ | 2-3/16″ | 1288 | 6920 | 2000 | 2894 | 7356 |
| 1-1/8″ | 1-13/16″ | 702 | 2180 | 1076 | 1544 | 3888 |
| 7/8″ | 1-7/16″ | 330 | 1170 | 500 | 716 | 1786 |
| 1″ | 1-5/8″ | 490 | 544 | 746 | 1066 | 2664 |
| 3/4″ | 1-1/4″ | 208 | 810 | 314 | 448 | 1118 |
SA193M Carriage Bolt, A193 Eye Bolts and Machine Bolts available in 1/2 inch to 52 inch length
ASTM A193M Heavy Hex Bolt Dimension Chart

| Nominal Diameter (D) | Across the Corners © | Across the Flats (F) | Body Diameter (D) | Thread Lengths (T) | Head Height (H) | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| min. | max. | min. | max. | min. | max. | > 6” | < 6” | min. | max. | |
| 3 | 5.102 | 5.34 | 4.475 | 4.625 | 2.961 | 3.081 | 6. | 6.25 | 1.815 | 2.06 |
| 2 3/4 | 4.688 | 4.907 | 4.112 | 4.25 | 2.711 | 2.827 | 6 | 5.75 | 1.632 | 1.869 |
| 2 1/2 | 4.275 | 4.474 | 3.75 | 3.875 | 2.461 | 2.559 | 5.5 | 5.25 | 1.479 | 1.708 |
| 2 1/4 | 3.862 | 4.041 | 3.388 | 3.5 | 2.214 | 2.305 | 5 | 4.75 | 1.327 | 1.548 |
| 1 3/4 | 3.035 | 3.175 | 2.662 | 2.75 | 1.716 | 1.785 | 4 | 3.75 | 1.054 | 1.196 |
| 1 1/2 | 2.622 | 2.742 | 2.3 | 2.375 | 1.47 | 1.531 | 3.5 | 3.25 | 0.902 | 1.036 |
| 1 3/8 | 2.416 | 2.526 | 2.119 | 2.188 | 1.345 | 1.404 | 3.25 | 3 | 0.81 | 0.94 |
| 1 1/8 | 2.002 | 2.093 | 1.756 | 1.812 | 1.098 | 1.149 | 2.75 | 2.5 | 0.658 | 0.78 |
| 1 | 1.796 | 1.876 | 1.575 | 1.625 | 0.976 | 1.022 | 2.5 | 2.25 | 0.591 | 0.7 |
| 1/2 | 0.969 | 1.01 | 0.85 | 0.875 | 0.482 | 0.515 | 1.5 | 1.25 | 0.302 | 0.364 |
| 7/8 | 1.589 | 1.66 | 1.394 | 1.438 | 0.852 | 0.895 | 2.25 | 2 | 0.531 | 0.604 |
| 3/4 | 1.383 | 1.443 | 1.212 | 1.25 | 0.729 | 0.768 | 2 | 1.75 | 0.455 | 0.524 |
| 5/8 | 1.175 | 1.227 | 1.031 | 1.062 | 0.605 | 0.642 | 1.75 | 1.5 | 0.378 | 0.444 |
| 1 1/4 | 2.209 | 2.309 | 1.938 | 2 | 1.223 | 1.277 | 3 | 2.75 | 0.749 | 0.876 |
| 2 | 3.449 | 3.608 | 3.025 | 3.125 | 1.964 | 2.039 | 4.5 | 4.25 | 1.175 | 1.388 |
Thread Forms of ASTM A193 Bolt
- UNC
- UNR
- UN8
- UNF
- BSF
ASME SA193M Lag Bolts Tensile Strength
| Grade | Tensile Strength (MPa) |
|---|---|
| ASME SA193M | 860 |
Most Common Types of ASTM A193 Bolts

ASTM A193 Bolts

ASTM A193M Threaded Rod

SA193M Screws

A193M Heavy Hex Bolt

ASME SA193 Nuts

A193 Stud Bolts

ASME SA193M Hex Bolt

ASTM A193 Carriage Bolt
A193M hex head bolt for high-pressure service applications in Middle East countries
Top 10 applications of SA193M Carriage Bolt
- Pipe Flange Assemblies
- Heat Exchangers
- Boilers
- Pressure Vessels
- Chemical Processing Plants
- Valves & Control System
- Oil & Gas
- Petrochemical Refinery
- Power Generation Facility
- Heavier Industry Structure
What is the difference between SA193 and A193 Fasteners ?
Chemical Composition of ASTM A193 Machine Bolts
Our inventory includes an extensive selection of ASTM A193 Bolts from well-known manufacturers that are Supplied from Umm Al Quwains and Sharjah.
| Elements | 316 (B8M) | 4140 (B7) | 304 (B8) |
|---|---|---|---|
| Carbon | 0.08% max | 0.37% – 0.49% | 0.08% max |
| Manganese | 2% max | 0.65% – 1.10% | 2% max |
| Chromium | 16% – 18% | 0.75 – 1.20% | 18% – 20% |
| Silicon | 1% max | 0.15% – 0.35% | 1% max |
| Sulfur, max | 0.03% | 0.04% | 0.03% |
| Phosphorus, max | 0.05% | 0.04% | 0.05% |
| Nickel | 10% – 14% | 8% – 11% | |
| Molybdenum | 2% – 3% | 0.15% – 0.25% | – |
ASME SA193M Lag Bolts Mechanical Properties
| Grade | Marking | Description | Diameter | Tensile Strength, min. | Yield Strength, min. | Hardness, max. |
|---|---|---|---|---|---|---|
| B7M | B7M | Chromium-Molybdenum | 4” and under | 100 | 80 | 235 HB or 99 HRB |
| over 4” to 7” | 100 | 75 | 235 HB or 99 HRB | |||
| B6 | B6 | S41000 (410) | Up to 4” | 110 | 85 | |
| B8R | B8R | S20910 | all | 100 | 55 | 271 HB or 28 HRC |
| B8 class 1 | B8 | S30400 (304) | all | 75 | 30 | 223 HB or 96 HRB |
| B8C class 1 | B8C | S34700 (347) | all | 75 | 30 | 223 HB or 96 HRB |
| B8M class 1 | B8M | S31600 (316) | all | 75 | 30 | 223 HB or 96 HRB |
| B8T class 1 | B8T | S32100 (321) | all | 75 | 30 | 223 HB or 96 HRB |
| B7 | B7 | Chromium-Molybdenum | 2 1/2” and under | 125 | 105 | 321 HB or 35 HRC |
| over 4” to 7” | 100 | 75 | 321 HB or 35 HRC | |||
| over 2 1/2” to 4” | 115 | 95 | 321 HB or 35 HRC | |||
| B16 | B16 | Chromium-Molybdenum- Vanadium | 2 1/2” and under | 125 | 105 | 321 HB or 35 HRC |
| over 4” to 8” | 100 | 85 | 321 HB or 35 HRC | |||
| over 2 1/2” to 4” | 110 | 95 | 321 HB or 35 HRC | |||
| B8 class 2 | B8SH | S30400 (304) | 3/4” and under | 125 | 100 | 321 HB or 35 HRC |
| over 3/4” to 1” | 115 | 80 | 321 HB or 35 HRC | |||
| over 1 1/4” to 1 1/2” | 100 | 50 | 321 HB or 35 HRC | |||
| over 1” to 1 1/4” | 105 | 65 | 321 HB or 35 HRC | |||
| B8C class 2 | B8CSH | S34700 (347) | 3/4” and under | 125 | 100 | 321 HB or 35 HRC |
| over 3/4” to 1” | 115 | 80 | 321 HB or 35 HRC | |||
| over 1 1/4” to 1 1/2” | 100 | 50 | 321 HB or 35 HRC | |||
| over 1” to 1 1/4” | 105 | 65 | 321 HB or 35 HRC | |||
| B8M class 2 | B8MSH | S31600 (316) | 3/4” and under | 110 | 95 | 321 HB or 35 HRC |
| over 3/4” to 1” | 100 | 80 | 321 HB or 35 HRC | |||
| over 1 1/4” to 1 1/2” | 90 | 50 | 321 HB or 35 HRC | |||
| over 1” to 1 1/4” | 95 | 65 | 321 HB or 35 HRC | |||
| B8T class 2 | B8TSH | S32100 (321) | 3/4” and under | 125 | 100 | 321 HB or 35 HRC |
| over 3/4” to 1” | 115 | 80 | 321 HB or 35 HRC | |||
| over 1 1/4” to 1 1/2” | 100 | 50 | 321 HB or 35 HRC | |||
| over 1” to 1 1/4” | 105 | 65 | 321 HB or 35 HRC | |||
| B8S | B8S | S21800 | all | 95 | 50 | 271 HB or 28 HRC |
Storage Sites of Partner Suppliers
| City | Region | Country |
|---|---|---|
| Dubai | Middle East | United Arab Emirates |
| Abu Dhabi | Middle East | United Arab Emirates |
| Dammam | Middle East | Saudi Arabia |
| Riyadh | Middle East | Saudi Arabia |
| Doha | Middle East | Qatar |
| Abuja | Africa | Nigeria |
| Kuwait City | Middle East | Kuwait |
| Jeddah | Middle East | Saudi Arabia |
| Cairo | MENA | Egypt |
| Casablanca | MENA | Morocco |
| Johannesburg | Africa | South Africa |
| Cape Town | Africa | South Africa |
| Lagos | Africa | Nigeria |
How to choose the Correct SA193 Hex Bolt ?
- Selecting the Correct Grade
- Determination the Size of Thread & Bolt
- Checking the Required Mechanical Strength
- Evaluates Operating Temperature
- Considering Corrosive
- Matches the Compatible Washer & Nut
- Verification of Marking, Standard & Certification
- Confirming Industrial Compliance
SA193M Carriage Bolt Recommended Hardware
| Grades | Washer | Nut |
|---|---|---|
| B16 | F436 | A194 Gr 7 |
| B8M Class 2 | 316 Stainless | A194 Gr 8M |
| B8M Class 1 | 316 Stainless | A194 Gr 8M |
| B8 Class 2 | 304 Stainless | A194 Gr 8 |
| B8 Class 1 | 304 Stainless | A194 Gr 8 |
| B7 | F436 | A194 Gr 2H |
Sales Agents in Following Locations
| Muscat | Riyadh | Dubai | Ras Al Khaimah |
|---|---|---|---|
| Sharjah | Fujairah | Umm Al Quwain | Doha |
| Saudi Arabia | Al Jubail | Abu Dhabi | Ajman |
Length Tolerances for A193M Bolts
Preferred ASTM A193 Bolts Supplier in UAE for industries that requiries resilience, strength & precision.
| Nominal Length | Nominal Sizes | |||||
|---|---|---|---|---|---|---|
| Over 1 1/2 | 1 1/8 – 11/2 | 7/8 – 1 | 9/16 – 3/4 | 7/16 and 1/2 | 1/4 – 3/8 | |
| Up – 1 in,incl. | – | – | – | +0.02 | +0.02 | +0.02 |
| – | – | – | -0.03 | -0.03 | -0.03 | |
| Over 2 1/2 into 4 in,incl | +0.20 | +0.16 | +0.10 | +0.08 | +0.06 | +0.04 |
| -0.20 | -0.16 | -0.14 | -0.10 | -0.08 | -0.06 | |
| Over 1 into 2 1/2 in,incl | +0.18 | +0.12 | +0.08 | +0.06 | +0.04 | +0.02 |
| -0.18 | -0.12 | -0.10 | -0.08 | -0.06 | -0.04 | |
| Longer than 6 in. | +0.24 | +0.22 | +0.16 | +0.14 | +0.12 | +0.10 |
| -0.24 | -0.22 | -0.20 | -0.18 | -0.18 | -0.18 | |
| Over 4 into 6 in,incl | +0.22 | +0.18 | +0.12 | +0.10 | +0.08 | +0.06 |
| -0.22 | -0.18 | -0.16 | -0.10 | -0.10 | -0.10 | |
How to Identify ASTM A193 B16 & B7 Fasteners in the Field ?
- Markings on head of bolts are quickest way for distinguish between B16 & B7 fasteners
Warehouse Locations of Partner Suppliers
| Middle East countries | Qatar, Lebanon, Bahrain, Saudi, Kuwait, UAE, Jordan, Iraq, Syria, Iran, Yemen |
|---|---|
| Africa | Nigeria, South Africa, Kenya, Morocco, Egypt, Tunisia, Algeria |
| MENA | Morocco, Libya, Algeria, Tunisia, Egypt, Israel, Palestine |
Coating Surface on A193 Eye Bolts
A193M Heavy Hex Bolt Temperature Range
| Grade | Temperature Range |
|---|---|
| A193M | Upto 480°C |
Warehouse Locations of Partner Suppliers
| Umm Al Quwain | Sharjah |
| Fujairah | Abu Dhabi |
| Dubai | Ajman |
Check Out Your Nearby Locations For Fastest Deliveries
| Country | Cities |
|---|---|
| Netherlands | The Hague |
| Belgium | Meeuwen-Gruitrode |
| Netherlands | Amsterdam |
| Belgium | Antwerp |
| Netherlands | Haarlem |
| Belgium | Brussels |
| Belgium | Seraing |
| Belgium | Ghent |
| Belgium | Leuven |
| Netherlands | Eindhoven |
| Belgium | Westerlo |
| Netherlands | Rotterdam |


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