THREADED BAR / ROD
ASME SA 193 Grade B7, Grade B7M, Grade B16
ASTM A 193 Grade B7, Grade B7M, Grade B16
ASME SA 320 Grade L7, Grade L7M, Grade L43
ASTM A 320 Grade L7, Grade L7M, Grade L43
ASME SA 194 Grade 2H, Grade 2HM, Grade 3, Grade 4, Grade 7, Grade 7M, Grade 16
ASTM A 194 Grade 2H, 2HM, 3, 4, 7, 7M, 16
ASME SA 193 Grade B8, Grade B8M, Grade B8 Class 2, Grade B8M Class 2
ASTM A 193 Grade B8, B6M, B8 Class 2, B8M Class 2
ASME SA 320 Grade B8, Grade B8M, Grade B8 Class 2, Grade B8M Class 2
ASTM A 320 Grade B8, B8M, B8 Class 2, B8M Class 2
ASME SA 307 Grade A, B, C Carbon Steel Bolt and Stud 60000 PSI Tensile Strength
ASTM A 307 Grade A, B, C Carbon Steel Bolt and Stud 60,000 PSI Tensile Strength
ASME SA 194 Grade 8, Grade 8M, Grade 8F, Grade 8A, Grade 8C, Grade 6, Grade 310
ASTM A 194 Grade 8, 8M, 8F, 8A, 8C, 6, 310
Stainless Steel Carbide Solution Treated & Strain Hardened Threaded Bar, Rod, Stud
Roll Threaded Bars, Roll Threaded Rods, Roll Threaded Studs
B-8 Class-1 Stainless Steel AISI 304 / 304L Carbide Solution Treated
B-8 Class-2 Stainless Steel AISI 304 / 304L Carbide Solution Treated, Strain Hardened
B-8M Class-1 Stainless Steel AISI 316 / 316L Carbide Solution Treated
B-8M Class-2 Stainless Steel AISI 316 / 316L Carbide Solution Treated, Strain Hardened
B-8C Stainless Steel AISI 347 / 347H Carbide Solution Treated, Strain Hardened
B-8T Stainless Steel AISI 321 / 321H Carbide Solution Treated, Strain Hardened
B-8P Stainless Steel AISI 305 Carbide Solution Treated, Strain Hardened
Threaded Rod / Threaded Bar DIN 975, Stud Bolt DIN 976
Hexagon Bolt DIN 601, DIN 931, DIN 933, Hexagon Nut DIN 555, DIN 934
Plain Washer DIN 125, Stud Metal End DIN 938, DIN 939, DIN 940
Property Class : 4.8, 5.6, 5.8, 8.8, 10.9, 12.9
Coating : Bright Zinc Plated, Hot Dip Galvanised, Phosphatided, Nickel Plated
Material : 22CrMo4, 24CrMo4, 25CrMo4, 26CrMo4, 34CrMo4, 42CrMo4, 34CrNiMo6, 41CrNiMo6
Material : AISI 4130, SAE 4130, AISI 4140, SAE 4140, AISI 4145, SAE 4145, AISI 4340, SAE 4340
Material : EN 8, EN 9, EN 19, EN 24 Condition : Normalised, Tempered, Quenched & Tempered
HEAT-TREATED ALLOY STUDS, BOLTS THREADED BARS & RODS
Chemical Composition
| Elements | A354 Grades BC, BD | A193 Grade B7 | ||
| **See Note Below | Chromium-Molybdenum | |||
| Range percent | Check variation over percent |
Range percent | Check variation over or under percent |
|
| Carbon… | — | — | *0.38-0.48 | 0.02 |
| Manganese… | — | — | 0.750-1.00 | 0.04 |
| Phosphorus, max… | 0.04 | 0.005 | 0.04 | 0.005 over |
| Sulphur, max… | 0.04 | 0.005 | 0.04 | 0.005 over |
| Silicon… | — | — | 0.20-0.35 | 0.02 |
| Chromium… | — | — | 0.80-1.10 | 0.05 |
| Molybdenum… | — | — | 0.15-0.25 | 0.02 |
| Elements | A193 Grade B16 Chromium-Molybdenum-Vanadium |
|||
| Range percent | Check variation over or under percent |
|||
| Carbon… | 0.36-0.44 | 0.02 | ||
| Manganese… | 0.45-0.70 | 0.03 | ||
| Phosphorus, max… | 0.04 | 0.005 over | ||
| Sulphur, max… | 0.04 | 0.005 over | ||
| Silicon… | 0.20-0.35 | 0.02 | ||
| Chromium… | 0.80-1.15 | 0.05 | ||
| Molybdenum… | 0.50-0.65 | 0.03 | ||
| Vanadium… | 0.25-0.35 | 0.03 | ||
| Elements | A320 Grade L7 | A320 Grade L43 | ||
| Chromium-Molybdenum (AISI 4140, 4142, 4145) |
Nickel-Chromium-Molybdenum (AISI 4340) |
|||
| Range percent | Check variation over percent |
Range percent | Check variation over or under percent |
|
| Carbon… | *0.38-0.48 | 0.02 | 0.38-0.148 | 0.02 |
| Manganese… | 0.75-1.00 | 0.04 | 0.60-0.85 | 0.03 |
| Phosphorus, max… | 0.04 | 0.005 over | 0.04 | 0.005 over |
| Sulphur, max… | 0.04 | 0.005 over | 0.04 | 0.005 over |
| Silicon… | 0.20-0.35 | 0.02 | 0.20-0.35 | 0.02 |
| Nickel… | — | — | 1.65-2.00 | 0.05 |
| Chromium… | 0.80-1.10 | 0.05 | 0.70-1.90 | 0.03 |
| Molybdenum… | 0.15-0.25 | 0.02 | 0.20-0.30 | 0.02 |
*For bar sizes over 3-1/2 in. to 4 in., inclusive, the carbon content may be 0.50 pct. max.
** Any alloy steel capable of meeting the tensile requirements of Specification A354 may be used.
Tensile Requirements
| Grade | Diameter, in. | Min tempering temp F |
Tensile strength min psi |
Yield point min psi |
Elongation in 2 in. min pct |
Reduction of area min pct |
| A354 Grade BC | {2-1/2 and under {Over 2-1/2 to 4 incl. |
850 | 125,000 | 109,000 | 16 | 50 |
| A354 Grade BD | 1-1/2 and under | 850 | 115,000 | 99,000 | 16 | 45 |
| A193 Grade B7 Chromium- Molybdenum |
{2-1/2 and under {Over 2-1/2 to 4 incl. {Over 4 to 7 incl. |
850 | 150,000 | 125,000 | 14 | 35 |
| A193 Grade B16 Chromium- Molybdenum- Vanadium |
{2-1/2 and under {Over 2-1/2 to 4 incl. {Over 4 to 7 incl. |
1100 1100 1100 |
125,000 115,000 100,000 |
105,000 95,000 75,000 |
16 16 18 |
50 50 50 |
| A320 Grade L7 Chromium- Molybdenum |
2-1/2 and under | — | 125,000 | 105,000 | 16 | 50 |
| A320 Grade L43 Nickel-Chromium- Molybdenum |
4 and under | — | 125,000 | 105,000 | 16 | 50 |
Commonly used are the following grades of heat-treated alloy steel for high-pressure or extreme temperature service in diameters of 1/2 in. to 2 in., inclusive. Other grades and other diameters are available on special order.
ASTM A354, Grades BC and BD – heat-treated alloy steels for applications at normal atmospheric temperatures where high strength is required.
ASTM A193, Grade B7 – a heat-treated chromium-molybdenum steel widely used for medium high-temperature service.
ASTM A193, Grade B16 – a heat-treated chromium-molybdenum-vanadium steel for high-pressure, high-temperature service.
ASTM A320, Grade L7 – This grade is intended for low-temperature service down to minus 150ºF and has a minimum Charpy impact value of 15 ft-lb at this temperature. Sizes 2-1/2 in. and under.
ASTM A320, Grade L43 – The same properties offered by Grade L7 in sizes up to 2-1/2 are obtainable up to 4 in. in Grade L43
NOTES:
- In addition to the indicated grade marking, all grades, except A563 grades O, A and B, must be marked for manufacturer identification.
- The markings shown for all grades of A194 nuts are for cold formed and hot forged nuts. When nuts are machined from bar stock the nut must be additionally marked with the letter ‘B’.
- Nuts are not required to be marked unless specified by the purchaser. When marked, the identification marking shall be the grade letter O, A or B.
- Properties shown are those of nonplated or noncoated coarse thread hex nuts.
- Properties shown are those of coarse thread heavy hex nuts.
- Properties shown are those of coarse thread heavy hex nuts.
- Properties shown are those of coarse 8-pitch thread heavy hex nuts.
- Hardnesses are Brinell Hardness Numbers.
- The nut manufacturer, at his option, may add other markings to indicate the use of atmospheric corrosion resistant steel.
- Specifications —
ASTM A563 — Carbon and Alloy Steel Nuts.
ASTM A194/A194M — Carbon and Alloy Steel Nuts for Bolts for High Pressure and High Temperature Service
| Grade(1) | General Descpription of Material |
Bolts, Screws and Studs | Nuts | ||||||
| Full Size Bolts, Screws, Studs |
Machine Test Sprecimens of Bolts, Screws, Studs |
Hardness Rockwell |
Proof Load Stress |
Hardness Rockwell |
|||||
| Yield (2) Strength |
Tensile Strength |
Yield (2) Strength |
Tensile Strength |
Elong- ation(3) |
|||||
| Min psi | Min psi | Min psi | Min psi | % Min. | Min | psi | Min | ||
| 303A | Austenitic Stainless Steel- Sol. Annealed |
30,000 | 75,000 | 30,000 | 75,000 | 20 | B75 | 75,000 | B75 |
| 304-A | Austenitic Stainless Steel- Sol. Annealed |
30,000 | 75,000 | 30,000 | 75,000 | 20 | B75 | 75,000 | B75 |
| 304 | Austenitic Stainless Steel- Cold Worked |
50,000 | 90,000 | 45,000 | 85,000 | 20 | B85 | 90,000 | B85 |
| 304-SH | Austenitic Stainless Steel- Strain Hardened |
See Note 6 |
See Note 6 |
See Note 6 |
See Note 6 |
15 | C25 | See Note 6 |
C20 |
| 305-A | Austenitic Stainless Steel- Sol. Annealed |
30,000 | 75,000 | 30,000 | 75,000 | 20 | B70 | 75,000 | B70 |
| 305 | Austenitic Stainless Steel- Cold Worked |
50,000 | 90,000 | 45,000 | 85,000 | 20 | B85 | 90,000 | B85 |
| 305-SH | Austenitic Stainless Steel- Strain Hardened |
See Note 6 |
See Note 6 |
See Note 6 |
See Note 6 |
15 | C25 | See Note 6 |
C20 |
| 316-A | Austenitic Stainless Steel- Sol. Annealed |
30,000 | 75,000 | 30,000 | 75,000 | 20 | B70 | 75,000 | B70 |
| 316 | Austenitic Stainless Steel- Cold Worked |
50,000 | 90,000 | 45,000 | 85,000 | 20 | B85 | 90,000 | B85 |
| 316-SH | Austenitic Stainless Steel- Strain Hardened |
See Note 6 |
See Note 6 |
See Note 6 |
See Note 6 |
15 | C25 | See Note 6 |
C20 |
| XM7-A | Austenitic Stainless Steel- Sol. Annealed |
30,000 | 75,000 | 30,000 | 75,000 | 20 | B70 | 75,000 | B70 |
| XM7 | Austenitic Stainless Steel- Cold Worked |
50,000 | 90,000 | 45,000 | 85,000 | 20 | B85 | 90,000 | B85 |
| 384-A | Austenitic Stainless Steel- Sol. Annealed |
30,000 | 75,000 | 30,000 | 75,000 | 20 | B70 | 75,000 | B70 |
| 384 | Austenitic Stainless Steel- Cold Worked |
50,000 | 90,000 | 45,000 | 85,000 | 20 | B85 | 90,000 | B85 |
| 410-H | Martensitic Stainless Steel- Hardened and Tempered |
95,000 | 125,000 | 95,000 | 125,000 | 20 | C22 | 125,000 | C22 |
| 410-HT | Martensitic Stainless Steel- Hardened and Tempered |
135,000 | 180,000 | 135,000 | 180,000 | 12 | C36 | 180,000 | C36 |
| 416-H | Martensitic Stainless Steel- Hardened and Tempered |
95,000 | 125,000 | 95,000 | 125,000 | 20 | C22 | 125,000 | C22 |
| 416-HT | Martensitic Stainless Steel- Hardened and Tempered |
135,000 | 180,000 | 135,000 | 180,000 | 12 | C36 | 180,000 | C36 |
| 430 | Ferritic Stainless Steel |
40,000 | 70,000 | 40,000 | 70,000 | 20 | B75 | 70,000 | B75 |
Note 6. Austenitic stainless steel, strain hardened bolts, screws, studs, and nuts shall have the following strength per properties.
| Product Size |
Bolts, Screws, Studs | Nuts | |||
| Tested Full Size | Machine Test Specimens, | Proof Load Stress |
|||
| Yield Strength |
Tensile Strength |
Yield Strength |
Tensile Strength |
||
| in. | min psi | min psi | min psi | min psi | psi |
| to 5/8 in. | 100,000 | 125,000 | 90,000 | 115,000 | 125,000 |
| over 5/8 to 1 in. | 70,000 | 105,000 | 65,000 | 100,000 | 105,000 |
| over 1 to 1-1/2 in. | 50,000 | 90,000 | 45,000 | 85,000 | 90,000 |
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Stainless Steel Rods[/vc_column_text][/vc_column][vc_column width=”1/6″][vc_column_text]
Rods/Bars/Wires[/vc_column_text][/vc_column][vc_column width=”1/6″][vc_column_text]
Bars For Oil & Gas[/vc_column_text][/vc_column][vc_column width=”1/6″][vc_column_text]
Forged Round Bars[/vc_column_text][/vc_column][vc_column width=”1/6″][vc_column_text]
Cold Drawn Bars[/vc_column_text][/vc_column][vc_column width=”1/6″][vc_column_text]
Threaded Bars/Rods[/vc_column_text][/vc_column][/vc_row][vc_row][vc_column width=”1/6″][vc_column_text]
Hexagon Bars[/vc_column_text][/vc_column][vc_column width=”1/6″][vc_column_text]
Square Bars[/vc_column_text][/vc_column][vc_column width=”1/6″][vc_column_text]
Spring Steel Bars
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Hollow bar[/vc_column_text][/vc_column][vc_column width=”1/6″][/vc_column][vc_column width=”1/6″][/vc_column][/vc_row]
