ASTM A193 grade B7M bolts
If you are sourcing ASTM A193 Grade B7M bolts for a project involving flanges, valves, or pressure vessels, you are likely looking for a grade that won't let you down under demanding conditions. Grade B7M is essentially a controlled hardness version of the popular B7 grade, it is specifically used in environments where hydrogen embrittlement or stress corrosion is a real risk, such as in oil refineries and water treatment plants.
As a trusted manufacturer of A193 B7M fasteners in India, we produce hex bolts, heavy hex bolts, stud bolts, and threaded rods in this grade with full material traceability and test certificates included as standard. We also serve buyers who need smaller quantities quickly, which is why maintaining a ready stock has always been a priority for us. Whether you are a contractor, an EPC firm, or a plant maintenance team, our role as a dependable stockist means your procurement timelines stay on track.
The grade is available in sizes from M2 to M100, across thread forms like UNC, UNF, and Metric, and with surface treatment options like PTFE coating and phosphating on request. As an established supplier of SA193 gr B7M heavy hex bolts based in Mumbai, we work with clients across India as well as internationally, and as an active exporter, we regularly ship to the UAE, Saudi Arabia, Malaysia, and other parts of the Middle East and Southeast Asia. Get in touch with us today to receive a quote, material test certificate samples, or our current price list. we typically respond within 24 hours.
Table of Content
ASTM A193 grade B7M bolts Specification
A193 grade B7M Bolt Sizes
M2 to M24
SA193 B7M fasteners Length
3 mm to 200 mm
A193 gr B7M material Heat Treatment
≥ 1150°F
SA193 gr B7M Structural bolts Standards
DIN 934, 931, 933, 7991, 976, 125 / ASME B18.2.1, B18.3
ASTM A193 grade B7M Heavy hex bolt Threads
BSW / BSF / UNF / METRIC / UNC
Custom Sizes
We are Manufacturer of ASTM A193 grade B7M bolts in custom sizes
Origin
Korean / Russian / Indian / European
A193 Gr B7M Studs Type
Tap-End / Fully or Fine threaded / Double-End
ASTM A193 grade B7M bolts Condition
Threading / Cold Drawn
ASME SA193 B7M Bolts Thread Pitch
Coarse Threads / Fine Threads
Manufacturing Technique
CNC Machined / Hot forging / Cold forging
SA193 Gr B7M Stud bolt Finish
Phosphating / Passivation / HDG
ASME SA193 B7M Bolt Drive Style
- Torx
- Round
- Pan
- Cross
- Hex
- Oval
- Truss
A193 B7M hex head bolts Head Types
- Slotted hex washer
- Button head
- Slotted Drive
- Phillips Drive
- Flat
- Hex washer head
- Socket cap head
A193 gr B7M Bolts Thread Class
- Class 1A (Loose fit)
- 5 ONF
- Class 3A (Tight fit)
- Class 2A (Medium fit)
- 4G
- 3G
- 2G
Packaging
- Wooden Cases
- Wooden Pallet
- Carton Box
- Blister Packs
Certificate
- UT and PMI Test
- EN 10204/3.1B
- Raw Materials Certificate
- 100% Radiography Test
Value Added Services
- Head Shank Drilling
- Laser Etching
- Color Coding
- Head Painting
ASTM A193 grade B7M Heavy hex bolt
ASME SA193 Gr B7M Stud bolt
ASTM A193 gr B7M Structural bolts
A193 B7M Hex bolts
SA 193 Grade B7M Threaded rod
A193 gr B7M Studs
ASTM A193 Gr B7M Hex Bolts Price list
| Product | Price in USD (Pcs) |
Price in Dirham (Pcs) |
Price in Euro (Pcs) |
|---|---|---|---|
| M18 X 125MM STUD BOLT, ASTM A193 B7M, PTFE COATED | US $3.35 | 12.3 AED | € 2.85 |
| M33 X 170MM ASTM A193 B7M Hex Bolts, UNF Thread | US $9.73 | 35.71 AED | € 8.28 |
ASTM A193 grade B7M chemical composition
Carbon
0.37 - 0.49 (Max.)
Manganese
0.65 - 1.10
Phosphorus
0.035 max
Sulfur
0.040 max
Silicon
0.15 - 0.35
Chromium
0.75 - 1.20
Molybdenum
0.15 - 0.25
ASTM A193 grade B7M equivalent
| UNS | Grade |
|---|---|
| G41400 | 4140 steel |
Mechanical properties of SA 193 gr B7M material
Tensile Strength
100 ksi
Yield Strength
80 ksi
Reduction of Area
50 %
Elongation
18 % Min
| Hardness | 235 HBW |
|---|
Recommended Nuts & Washers for A193 B7M Bolts
| Nut Specification | Washer Specification |
|---|---|
| ASTM A194 Grade 2HM | ASTM F436 |
ASTM A193 grade B7M torque chart
| Bolt Diameter | Nut Size | Dry | Machine Oil | Nickel Lube | Moly Lube | Copper Lube |
|---|---|---|---|---|---|---|
| u=0.400 | u=0.160 | u=0.110 | u=0.085 | u=0.100 | ||
| 3/4" | 1-1/4" | 1118 | 448 | 342 | 208 | 314 |
| 7/8" | 1-7/16" | 1786 | 716 | 544 | 330 | 500 |
| 1" | 1-5/8" | 2664 | 1066 | 810 | 490 | 746 |
| 1-1/8" | 1-13/16" | 3888 | 1544 | 1170 | 702 | 1076 |
| 1-1/4" | 2" | 5440 | 2150 | 1622 | 966 | 1492 |
| 1-3/8" | 2-3/16" | 7356 | 2894 | 2180 | 1288 | 2000 |
| 1-1/2" | 2-3/8" | 9274 | 3792 | 2850 | 1674 | 2614 |
| 1-5/8" | 2-9/16" | 12520 | 4890 | 3668 | 2142 | 3364 |
| 1-3/4" | 2-3/4" | 15776 | 6144 | 4602 | 2676 | 4218 |
| 1-7/8" | 2-15/16" | 19550 | 7596 | 5682 | 3292 | 5204 |
| 2" | 3-1/8" | 23884 | 9260 | 6920 | 3994 | 6334 |
| 2-1/8" | N/A | 28816 | 11150 | 8324 | 4790 | 7618 |
| 2-1/4" | 3-1/2" | 34382 | 13282 | 9906 | 5686 | 9068 |
| 2-3/8" | N/A | 40620 | 15668 | 11676 | 6686 | 10678 |
| 2-1/2" | 3-7/8" | 47536 | 18324 | 13646 | 7796 | 12476 |
| 2-3/4" | 4-1/4" | 57692 | 22170 | 16488 | 9382 | 15066 |
| 3" | 4-5/8" | 75340 | 28894 | 21464 | 13974 | 19606 |
| 3-1/4" | 5" | 96258 | 36856 | 27352 | 15470 | 24976 |
| 3-1/2" | 5-3/8" | 120730 | 46158 | 34226 | 19312 | 31244 |
| 3-3/4" | 5-3/4" | 149032 | 56906 | 42168 | 23742 | 38482 |
| 4" | 6-1/8" | 172292 | 65652 | 48590 | 27262 | 44324 |
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