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Threaded Bars/Rods :

Threaded Bars/Rods Exporter

Contact Us For High Quality Threaded Bars/Rods

At JB Steel we pride ourselves on always putting the customer first. We help make stainless solutions simple for you by ensuring satisfaction through high delivery performance, flexibility and extensive service.

We are pleased to introduce ourselves as one of the leading Importers, Exporters, Suppliers & Stockists of Threaded Bars/Rods.

We would appreciate to get your esteemed enquires and look forward to the pleasure receiving your valuable response.

Studs/Bolts/Nuts
THREADED ROD / STUD / BOLT / NUT / WASHER
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

ASTM, SAE AND ISO GRADE MARKINGS AND MECHANICAL PROPERTIES FOR STEEL FASTENERS

Identification
Grade Mark
Specification
Fastener
Description
Material
Nominal Size
Range (in.)
Mechanical Properties
Proof Load
(psi)
Yield Strength
Min (psi)
Tensile Strength
Min (psi)

No
Grade
Mark
SAE J429
Grade 1
Bolts, 
Screws, 
Studs
Low or Medium Carbon Steel
1/4 thru 1-1/2
33,000
36,000
60,000
ASTM A307
Grades A&B
Low Carbon Steel
1/4 thru 4
--
--
SAE J429
Grade 2
Low or Medium Carbon Steel
1/4 thru 3/4 Over 3/4 to 1-1/2
55,000
33,000
57,000
36,000
74,000
60,000

No
Grade
Mark
SAE J429
Grade 4
Studs
Medium Carbon Cold Drawn Steel
1/4 thru 1-1/2
--
100,000
115,000

B5
ASTM A193
Grade B5
AISI 501
1/4 Thru 4
--
80,000
100,000

B6
ASTM A193
Grade B6
AISI 410
85,000
110,000

B7
ASTM A193
Grade B7
AISI 4140, 4142, OR 4105
1/4 thru 2-1/2
Over 2-1/2 thru 4
Over 4 thru 7
--
--
--
105,000
95,000
75,000
125,000
115,000
100,000

B16
ASTM A193
Grade B16
CrMoVa Alloy Steel
105,000
95,000
85,000
125,000
115,000
100,000

B8
ASTM A193
Grade B8
AISI 304
1/4 and larger
--
30,000
75,000

B8C
ASTM A193
Grade B8C
AISI 347

B8M
ASTM A193
Grade B8M
AISI 316

B8T
ASTM A193
Grade B8T
Bolts,
Screws,
Studs for High-Temperature Service
AISI 321
1/4 and larger
--
30,000
75,000

B8
ASTM A193
Grade B8
AISI 304
Strain Hardened
1/4 thr 3/4
Over 3/4 thru 1
Over 1 thru 1-1/4
Over 1-1/4 thru 1-1/2
--
--
--
--
100,000
80,000
65,000
50,000
125,000
115,000
105,000
100,000

B8C
ASTM A193
Grade B8C
AISI 347
Strain Hardened

B8M
ASTM A193
Grade B8M
AISI 316
Strain Hardened
95,000
80,000
65,000
50,000
110,000
100,000
95,000
90,000

B8T
ASTM A193
Grade B8T
AISI 321
Strain Hardened
100,000
80,000
65,000
50,000
125,000
115,000
105,000
100,000

L7
ASTM A320
Grade L7
Bolts,
Screws,
Studs for Low-Temperature Service
AISI 4140,
4142 or 4145
1/4 thru 2-1/2
--
105,000
125,000

L7A
ASTM A320
Grade L7A
AISI 4037

L7B
ASTM A320
Grade L7B
AISI 4137

L7C
ASTM A320
Grade LC7
AISI 8740

L43
ASTM A320
Grade L43
AISI 4340
1/4 thru 4
--
105,000
125,000

B8
ASTM A320
Grade B8
Bolts,
Screws,
Studs for Low-Temperature Service
AISI 304
1/4 and larger
--
30,000
75,000

B8C
ASTM A320
Grade B8C
AISI 347

B8T
ASTM A320
Grade B8T
AISI 321

B8F
ASTM A320
Grade B8F
AISI 303
or 303Se

B8M
ASTM A320
Grade B8M
AISI 316

B8
ASTM A320
Grade B8
AISI 304
1/4 thru 3/4
Over 3/4 thru 1
Over 1 thru 1-1/4
Over 1-1/4 thru 1-1/2
--
--
--
--
100,000
80,000
65,00
50,00
100,000
80,000
65,00
50,00

B8C
ASTM A320
Grade B8C
AISI 347

B8F
ASTM A320
Grade B8F
AISI 303
or 303Se

B8M
ASTM A320
Grade B8M
AISI 316

B8T
ASTM A320
Grade B8T
AISI 321
SAE J429
Grade 5
Bolts,
Screws,
Studs
Medium Carbon Steel, Quenched and Tempered
1/4 thru 1
Over 1 to 1-1/2
85,000
74,000
92,000
81,000
120,000
105,000
ASTM A449
1/4 thru 1
Over 1 to 1-1/2
Over 1-1/2 thru 3
85,000
74,000
55,000
92,000
81,000
58,000
120,000
105,000
90,000
SAE J429
Grade 5.1
Sems
Low or Medium Carbon Steel, Quenched and Tempered
No. 6
thru 3/8
85,000
--
120,000
SAE J429
Grade 5.2
Bolts,
Screws,
Studs
Low Carbon Martensitic Steel, Quenched and Tempered
1/4 thru 1
85,000
92,000
120,000

A325
ASTM A325
Type 1
High Strength
Structural Bolts
Medium Carbon Steel, Quenched and Tempered
1/2 thru 1
1-1/8 thru 1-1/2
85,000
74,000
92,000
81,000
120,000
105,000

A325
ASTM A325
Type 2
Low Carbon Martensitic Steel, Quenched and Tempered
1/2 thru 1
85,000
92,000
120,000

A325
ASTM A325
Type 3
Atmospheric Corrosion Resisting Steel, Quenched and Tempered
1/2 thru 1
1-1/8 thru 1-1/2
85,000
74,000
92,000
81,000
120,000
105,000

BB
ASTM A354
Grade BB
Bolts,
Studs
Alloy Steel, Quenched and Tempered
1/4 thru 2-1/2
2-3/4 thru 4
80,000
75,000
83,000
78,000
105,000
100,000

BC
ASTM A354
Grade BC
105,000
95,000
109,000
99,000
125,000
115,000
SAE J429
Grade 7
Bolts,
Screws,
Medium Carbon Alloy Steel, Quenched and Tempered 4
1/4 thru 1-1/2
105,000
115,000
133,000
SAE J429
Grade 8
Bolts,
Screws,
Studs
Medium Carbon Alloy Steel, Quenched and Tempered
1/4 thru 1-1/2
120,000
130,000
150,000
ASTM A354
Grade BD
Alloy Steel, Quenched and Tempered 4

No Grade
Mark
SAE J429
Grade 8.1
Studs
Medium Carbon Alloy or SAE 1041 Modified Elevated Temperature Drawn Steel
1/4 thru 1-1/2
120,000
130,000
150,000

A490
ASTM A490
High Strength Structural Bolts
Alloy Steel, Quenched and Tempered
1/2 thru 1-1/2
120,000
130,000
150,000 min
170,000 max

No Grade
Mark
ISO R898
Class 4.6
Bolts,
Screws,
Studs
Medium Carbon Steel, Quenched and Tempered
All Sizes
thru 1-1/2
33,000
36,000
60,000

No Grade
Mark
ISO R898
Class 5.8
55,000
57,000
74,000
8.8

or

88
ISO R898
Class 8.8
Alloy Steel, Quenched and Tempered
85,000
92,000
120,000
10.9

or

109
ISO R898
Class 10.9
120,000
130,000
150,000

FASTENER IDENTIFICATION MARKING

Grade
Identification
Marking
Specification Material Nominal Size
In.
Proof
Load
Stress
ksi
Hardness
Rockwell
See
Note
Min Max

No Mark
ASTM A563 - Grade 0 Carbon Steel 1/4 thru 1-1/2 69 B55 C32 3,4
ASTM A563 - Grade A Carbon Steel 1/4 thru 1-1/2 90 B68 C32 3,4
ASTM A563 - Grade B Carbon Steel 1/4 thru 1 120 B69 C32 3,4
over 1 thru 1-1/2 105
ASTM A563 - Grade C Carbon Steel
May be Quenched
and Tampered
1/4 thru 4 144 B78 C38 5
ASTM A563 - Grade C3 Atmospheric
Corrosion
Resistant Steel
May be Quenched
and Tampered
1/4 thru 4 144 B78 C38 5,9
ASTM A563 - Grade D Carbon Steel
May be Quenched
and Tampered
1/4 thru 4 150 B84 C38 6
ASTM A563 - Grade DH Carbon Steel
Quenched
and Tampered
1/4 thru 4 175 C24 C38 6
ASTM A563 - Grade DH3 Atmospheric
Corrosion
Resistant Steel,
Quenched
and Tampered
1/4 thru 4 175 C24 C38 5,9
ASTM A194 - Grade 1 Carbon Steel 1/4 thru 4 130 B70 -- 7
ASTM A194 - Grade 2 Medium Carbon
Steel
1/4 thru 4 150 159 352 7,8
ASTM A194 - Grade 2H Medium Carbon
Steel, Quenched
and Tempered
1/4 thru 4 175 C24 C38 7
ASTM A194 - Grade 2HM Medium Carbon
Steel, Quenched
and Tempered
1/4 thru 4 150 159 237 7,8
ASTM A194 - Grade 4 Medium Carbon
Alloy Steel,
Quenched
and Tempered
1/4 thru 4 175 C24 C38 7
ASTM A194 - Grade 7 Medium Carbon
Alloy Steel,
Quenched
and Tempered
1/4 thru 4 175 C24 C38 7
ASTM A194 - Grade 7M Medium Carbon
Alloy Steel,
Quenched
and Tempered
1/4 thru 4 150 159 237 7
See Note 1,2 10            

NOTES:

  1. In addition to the indicated grade marking, all grades, except A563 grades O, A and B, must be marked for manufacturer identification.
  2. 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'.
  3. 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.
  4. Properties shown are those of nonplated or noncoated coarse thread hex nuts.
  5. Properties shown are those of coarse thread heavy hex nuts.
  6. Properties shown are those of coarse thread heavy hex nuts.
  7. Properties shown are those of coarse 8-pitch thread heavy hex nuts.
  8. Hardnesses are Brinell Hardness Numbers.
  9. The nut manufacturer, at his option, may add other markings to indicate the use of atmospheric corrosion resistant steel.
  10. 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


MECHANICAL REQUIREMENTS FOR STAINLESS STEEL FASTENERS

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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