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Alloy Steel Fasteners

Check Grade B7 Bolt Properties, ASTM A193 Grade B7 Nuts Supplier in India

Alloy Steel Fasteners are made in different alloy types. They have different composition with chromium, vanadium, tungsten and molybdenum inclusive. The addition of these elements in the composition gives the alloys the strength and corrosion resistance. Navstar Steel is one of the leading Alloy Steel Fasteners manufacturers In India and a leading supplier.

We Have Huge Selection Of ASTM A194 Alloy Steel Screws, Check Grade B6 Threaded Rod Dimension

The alloy steel fasteners come in different dimensions, grades and types. There are fasteners ranging from 3mm to 200mm in length and the types differ such as studs, bolts, nuts washers and so on. The Grade B7 Alloy Steel Bolts are manufactured in a chromium molybdenum alloy and are heat treated by quenched and tempered methods. This production method improves the strength of the ASTM A193 Grade B7 Nuts.


The applications of these fasteners include power plants, petrochemical industries, oil drilling applications, oil and gas pipe lines and many others. The ASTM Ba94 Alloy Steel Screws are used to fit components together with just screws without the need for nuts or welding procedures. The high heat applications such as exhaust components, heat exchangers and condensers also used these fasteners. The studs or Grade B6 Threaded Rod types are also used to combine two components together by having threads at both ends of the rods. Please contact us for more information and pricing of the products such as the ASTM A194 Grade B7 Nut Bolt and others of your choice.

Composition Standard of Grade B7 Bolt

Element B7 (AISI 4140) Fasteners B8 (AISI 304) Fasteners B8M (AISI 316)
Carbon 0.37 - 0.49% 0.08% max 0.08% max
Manganese 0.65 - 1.10% 2.00% max 2.00% max
Phosphorus, max 0.035% 0.045% 0.045%
Sulfur, max 0.040% 0.030% 0.030%
Silicon 0.15 - 0.35% 1.00% max 1.00% max
Chromium 0.75 - 1.20% 18.0 - 20.0% 16.0 - 18.0%
Nickel 8.0 - 11.0% 10.0 - 14.0%
Molybdenum 0.15 - 0.25% 2.00 - 3.00%

ASTM A193 Grade B7 Nuts Mechanical Properties Chart

Grade Size Tensile ksi, min Yield, ksi, min Elong, %, min RA % min
Alloy Steel B7 Fasteners Up to 2-1/2 125 105 16 50
2-5/8 - 4 115 95 16 50
4-1/8 - 7 100 75 18 50
B8 Class 1 All 75 30 30 50
B8M Class 1 All 75 30 30 50
Alloy Steel B8 Class 2 Fasteners Up to 3/4 125 100 12 35
7/8 - 1 115 80 15 35
1-1/8 - 1-1/4 105 65 20 35
1-3/8 - 1-1/2 100 50 28 45
Alloy Steel B8M Class 2 Fasteners Up to 3/4 110 95 15 45
7/8 - 1 100 80 20 45
1-1/8 - 1-1/4 95 65 25 45
1-3/8 - 1-1/2 90 50 30 45

PED approved ASTM A194 Grade B7 Nut Bolt, Alloy Steel Socket Nut, ASME SA 193 Alloy Steel Bolts Specifications

ASTM A194 Alloy Steel Screws Specification Format

Specifications ASTM A 193 ASME SA 193
Standard DIN, ASTM, BS and all International Standards
Length 3 mm to 200 mm
Size M3 – M56 | 3/6″ to 2″ | Custom Sizes
Type Hex Head Bolts, Square Bolts, U bolts, Eye bolts, T bolt, Hex Bolt, Lag Bolts, Counter sunk Bolts, Hex Head nuts, Square nuts, Lock nuts, Eye nuts, wing nuts, T nuts, Panel Nuts, Coupling Nuts, Dome nuts, Acorn Nuts.
Screw Type Alloy Threaded Screw, Hex Head Screw, Socket Head Screw, Socket Set Screw, Blind Rivet, Concrete Screw, Shoulder Screw, Anchor Screw, Panel Screw, Machine Screw etc.
Bolts Types Alloy Hex Head Bolt, Hex Bolt, Square Bolt, Eye Bolt, T Bolt, U Bolt, Lag Bolt, Counter sunk Bolt etc.
Washer Types Alloy Lock Washer, Machine Washers, Star Washers, Sealing Washer, Split Washer etc.
Studs Types Alloy Double Ended Studs, Threaded Tod, Tie Bars, Tie Rodsetc.
Nut Types Alloy Coupling Nut, Hex Head Nut, Wing Nut, Square Nut, Panel Nut, T Nut, Acorn Nuts, Dome Nut, Eye Nut, Lock Nut etc.

Most Common Types Of ASTM A194 Grade B7 Nut Bolt

m12 m15 alloy steel l7 threaded rod astm a193 b7 b16

m12 m15 alloy steel l7 threaded rod astm a193 b7 b16 fasteners

din975 High quality M8 660 alloy steel bolt

din975 High quality M8 660 alloy steel bolt fasteners

Screw fastener DIN912 socket head cap screws alloy steel

Screw fasteners DIN912 socket head cap screws AS fasteners

Alloy Steel Double End Stud Bolt/ Threaded Rods

Alloy Steel Double End Stud Bolt/ Threaded Rods/ fasteners

alloy steel t head bolt

Alloy Steel t head bolt

1 Mm To 6 Mm Alloy Steel Fastener

1 Mm To 6 Mm Alloy Steel Fasteners

ASTM A320 L7, A194/7 Alloy Steel Fastener, Size: 40 and 80S

ASTM A320 L7, A194/7 Alloy Steel Fasteners, Size: 40 and 80S

round head square nech carriage bolt steel carriage bolt m8 x 35 mm

round head square nech carriage bolt carriage bolt m8 x 35 mm

alloy steel flat head carriage bolt 1.5

Alloy Steel flat head carriage bolt 1.5 Fasteners

You can mail for Alloy Steel Nuts, Alloy Stainless Steel Fasteners, Low Alloy Steel Fasteners to induce live quotes now. Looking to buy Alloy Steel B6 Fasteners, Grade 12.9 Alloy Steel Fasteners at the best cost in India.

Alloy Steel Socket Nut Grade

  • B6 Fasteners
  • B7 Bolt/Nut
  • B7M Fasteners
  • B16 Bolt/Nut
  • 2 Fasteners
  • 2HM Bolt/Nut
  • 2H Bolt/Nut
  • GR 6 Fasteners
  • GR 7 Bolt/Nut
  • GR 7M Fasteners
Recommended Grade of Nuts,Bolts & Washer
Bolt Grade Nuts Washers
B7 A194 Grade 2H F436
B8 Class 1 A194 Grade 8 SS304
B8M Class 1 A194 Grade 8M SS316
B8 Class 2 A194 Grade 8 SS304
B8M Class 2 A194 Grade 8M SS316

We have our Manufacturing Unit and distributors of Alloy Steel Socket Nuts, ASME SA 193 Alloy Steel Fasteners Suppliers In India

Weight of ASTM A193 Grade B7 Nuts

Size Finished Hex Heavy Hex Finished Jam Heavy Hex Jam Square Heavy Square
1/2" 3.75 6.54 2.62 4.00 5.78 7.87
5/8" 7.33 11.9 4.93 6.96 10.8 14.3
3/4" 11.9 19.3 7.70 11.0 15.4 23.5
7/8" 19.0 29.7 12.0 16.7 24.5 36.2
1? 28.3 42.5 17.6 23.5 36.3 51.5
11/8" 40.3 59.2 24.7 32.4 52.5 72.4
11/4" 54.3 78.6 36.1 45.8 70.6 95.5
13/8" 73.0 102 47.9 59.3 94.5 125.0
11/2" 94.3 131 60.9 74.8 122 161
15/8" 162 91.6
13/4" 151 204 100 114
17/8" 241 134
2? 224 299 140 165
21/4" 419 227
21/2" 564 332
23/4" 738 429
3? 950 545
31/4" 1194 651
31/2" 1526 851
33/4" 1812 1005
4? 2180 1200
Grade 12.9 Alloy Steel Fasteners Manufacturers In India, Alloy Steel Washer, Check ASME SA 194 Alloy Steel Bolts And Nuts at best prices

ASME SA 193 Alloy Steel Bolts price List in india

Alloy Steel Stud Bolts Price List Grade B7 Nut Per Unit (INR)
Alloy Steel Double End Stud Bolt $0.08-$0.15/ Piece
Alloy Conveyor Belt Fasteners $0.57-$0.63/ Piece
half thread double ends bolts astm a193 price list $0.50/ Set
astm a193 b7 12 point flange bolt $0.06-$0.08/ Piece
We have huge inventory of B7 Alloy Steel Threaded Rod, Alloy Steel Grade B7 Hex Nut Dimension, ASTM A194 Grade 7 Nuts in India

ASME SA 193 Alloy Steel Heavy Hex Nut Dimensions Schedule

Nominal Size or Basic Major Thread Diameter F G H
Width Across Flats Width Across Corners Thickness
Basic Max Min Max Min Basic Max Min
1/4 .2500 1/2 .500 .488 .577 .556 15/64 .250 .218
5/16 .3125 9/16 .562 .546 .650 .622 19/64 .314 .280
3/8 .3750 11/16 .688 .669 .794 .763 23/64 .377 .341
7/16 .4375 3/4 .750 .728 .866 .830 27/64 .441 .403
1/2 .5000 7/8 .875 .850 1.010 .969 31/64 .504 .464
9/16 .5625 15/16 .938 .909 1.083 1.037 35/64 .568 .526
5/8 .6250 1-1/16 1.062 1.031 1.227 1.175 39/64 .631 .587
3/4 .7500 1-1/4 1.250 1.212 1.443 1.382 47/64 .758 .710
7/8 .8750 1-7/16 1.438 1.394 1.660 1.589 55/64 .885 .833
1 1.0000 1-5/8 1.325 1.575 1.876 1.796 63/64 1.012 .956
1-1/8 1.1250 1-13/16 1.812 1.756 2.093 2.002 1-7/64 1.139 1.079
1-1/4 1.2500 2 2.000 1.938 2.309 2.209 1-7/32 1.251 1.187
1-3/8 1.3750 2-3/16 2.188 2.119 2.526 2.416 1-11/32 1.378 1.310
1-1/2 1.5000 2-3/8 2.375 2.300 2.742 2.622 1-15/32 1.505 1.433
1-5/8 1.6250 2-9/16 2.562 2.481 2.959 2.828 1-19/32 1.632 1.556
1-3/4 1.7500 2-3/4 2.750 2.662 3.175 3.035 1-23/32 1.759 1.679
2 2.0000 3-1/8 3.125 3.025 3.608 3.449 1-31/32 2.013 1.925
2-1/4 2.2500 3-1/2 3.500 3.388 4.041 3.862 2-13/64 2.251 2.155
2-1/2 2.5000 3-7/8 3.875 3.750 4.474 4.275 2-29/64 2.505 2.401
2-3/4 2.7500 4-1/4 4.250 4.112 4.907 4.688 2-45/64 2.759 2.647
3 3.0000 4-5/8 4.625 4.475 5.340 5.102 2-61/64 3.013 2.893
3-1/4 3.2500 5 5.000 4.838 5.774 5.515 3-3/16 3.252 3.124
3-1/2 3.5000 5-3/8 5.375 5.200 6.207 5.928 3-7/16 3.506 3.370
3-3/4 3.7500 5-3/4 5.750 5.562 6.640 6.341 3-11/16 3.670 3.616
4 4.0000 6-1/8 6.125 5.925 7.073 6.755 3-15/16 4.014 3.862