ASME SA325 Type 1 Heavy Hex Structural Bolts manufacturer In India, View Specifications, Dimensions



ASTM A325 Bolts


What are ASTM A325 bolts?

ASTM A325 Hex Bolts fasteners used in a variety of industrial applications. The fasteners' finishes vary, and ASME SA325 Type 1 Heavy Hex Structural Bolts can be galvanised as one finish. Galvanising adds a corrosion layer protection to hex bolts. ASTM A325 Type 3 Stud Bolts are part of a standard for high tensile strength hex bolts.


Difference between ASTM A325 Type 1, Type 2, and Type 3

They can be treated by heat and available in various styles, including ASTM A325 flanged bolts and others. The diameter of these bolts varies from 0.5 inches to 1.5 inches. The material is quite strong. ASTM A325 Bolts Type 1 have a minimum tensile strength of 830MPa and a yield strength of 660MPa. These levels are nearly three times higher than conventional steel grades.

For type 1 bolts, A325 Hot Dip Galvanised Threaded Rod can be constructed of carbon alloy steel. Type 2 bolts are produced from low carbon steel. A325 fully threaded bolts and nuts are also available in weathering steel. When damaged, type 3 self-heals to generate a layer of oxide that prevents oxidation. The A325 bolts help to keep the application's surface smooth.


ASTM A325 structural bolts vs high tensile bolts

When it comes to mechanical bolting projects, strength is everything. There are many more similarities than differences between ASTM A325 Fastener and ASTM A325 Washer.

The two designations' overall features and physical and chemical strengths are almost identical. The distinctions may be noted in their categories and the sorts of jobs indicated for each bolt.

ASME SA325 High Strength Bolts for structural steel connections in big building projects. SAE grade 5 bolts, on the other hand, are commonly used in OEM-type applications.


ASTM A325 Bolts Specifications

Specification ASTM A325 Bolts
KM Steel Online Provide Options?: Yes
Free Samples: Yes
Drawing Formats: STP, IGS, JPEG, PDF, CAD
manufacturer of Below Threads: BSW, BSF, METRIC, UNC, UNF or as required
Test Certificate: EN 10204 / 3.1
Making Process: Surface Plating
Heat Treatment
Insert tapping
Cold Heading
manufacturer Size M02 to M152.4
Surface Coating Of Nuts: Phosphate Coating
Cadmium Coating
Teflon Coating
Xylon Coating
Delivery time: Regular export schedule is about 5-12 days
Head drive: Phillips/ Slot, Phillips, Six-Lobe, Slotted, etc
Head drive: Phillips/ Slot, Phillips, Six-Lobe, Slotted, etc
manufacturer Length 3 mm to 6"(inch)
Port of Dispatch: Mumbai ports in Maharashtra state of India
Certifications: PED 97/23/EC Certified
Available Surface Finish: Zinc Plated and Hot Dip Galvanised

ASME SA325 High Strength Bolts Price List In India

Fasteners Types Size In MM Types Of Grade Price Per Kg In (INR) India
Connection Bolts 350MM X 125MM ASTM A325 Type 1 258.00
-s 120MM X 120MM - 275.00
-s 350MM X 125MM 244.00
-s 460MM X 125MM - 258.00
Connection Bolts 350MM X 125MM ASTM A325 Type 1 286.00

Types Of ASTM A325 Hot Dip Galvanized Fasteners

ASTM A325 Hot Dip Galvanized Hex Bolt

ASTM A325 Hot Dip Galvanized Hex Bolt

SA325 Type 2 Carriage Bolt

SA325 Type 2 Carriage Bolt

ASTM A325 U Bolt

ASTM A325 U Bolt

A325 Steel Socket Head Cap Screw

A325 Steel Socket Head Cap Screw

 SA325 Type 3 Machine Screw

SA325 Type 3 Machine Screw

ASTM A325 Type 1 Self Tapping Screw

ASTM A325 Type 1 Self Tapping Screw

ASME A325 Stud Bolts

ASME A325 Stud Bolts

A325 Type 1 Square Head T Bolt

A325 Type 1 Square Head T Bolt

F325 Grade Flange Bolt

F325 Grade Flange Bolt

A325 Type 3 Hot Dip Galvanized Threaded Rod

A325 Type 3 Hot Dip Galvanized Threaded Rod

   A325 M16 Studs

A325 M16 Studs

 A325 Type 1 M8 Double End Studs

A325 Type 1 M8 Double End Studs

ASME SA325 Flat Washer

ASME SA325 Flat Washer

 Grade A325 Types C Fender Washer

Grade A325 Types C Fender Washer

ASME A325 Type 3 Split Lock Washer

ASME A325 Type 3 Split Lock Washer

 A325 Heavy Hex Nut

A325 Heavy Hex Nut

 Grade A325 Type 1 Locking Nuts

Grade A325 Type 1 Locking Nuts

SA325 Eye Nuts

SA325 Eye Nuts



ASTM A325 Bolts Dimensions

ASTM A325 Bolts Dimensions

Nominal Size In Inch Body Diameter (Maximum-Minimum) Of (E) Width Across Flats Of (F) Width Across Corners (G) Height Of Head (H) Fillet Radius (R) Length Of Thread (L/T) Length Of Transition Thread, (Y) Max Total Runout of Bearing Surface, FIM
Nominal Maximum-Minimum Nominal Maximum-Minimum
1/2 (0.500) 0.515-0.482 7/8 0.875-0.850 1.010-0.969 5/16 0.323-0.302 0.031-0.009 1.00 0.19 0.016
5/8 (0.625) 0.642-0.605 1 1/16 1.062-1.031 1.227-1.175 25/64 0.403-0.378 0.062-0.021 1.25 0.22 0.019
3/4 (0.750) 0.768-0.729 1 1/4 1.250-1.212 1.443-1.383 15/32 0.483-0.455 0.062-0.021 1.38 0.25 0.022
7/8 (0.875) 0.895-0.852 1 7/16 1.438-1.394 1.660-1.589 35/64 0.563-0.531 0.062-0.031 1.50 0.28 0.025
1 (1.000) 1.022-0.976 1 5/8 1.625-1.575 1.876-1.796 39/64 0.627-0.591 0.093-0.062 1.75 0.31 0.028
1 1/8 (1.125) 1.149-1.098 1 13/16 1.812-1.756 2.093-2.002 11/16 0.718-0.658 0.093-0.062 2.00 0.34 0.032
1 1/4 (1.250) 1.277-1.223 2 2.000-1.938 2.309-2.209 25/32 0.813-0.749 0.093-0.062 2.00 0.38 0.035
1 3/8 (1.375) 1.404-1.345 2 3/16 2.188-2.119 2.526-2.416 27/32 0.878-0.810 0.093-0.062 2.25 0.44 0.038
1 1/2 (1.500) 1.531-1.470 2 3/8 2.375-2.300 2.742-2.622 15/16 0.974-0.902 0.093-0.062 2.25 0.44 0.041

Call For Small Piece Of A325 Hot Dip Galvanized Threaded Rod To Test Before Buying, Check Weight, Chemical Composition


Types Of ASTM A325 Galvanized Bolts

Types Of ASTM A325 Galvanized Bolts


Connection Types Of SA325 Stainless Steel Bolts

SCconnection of Slip critical

NBearing type connection with threads

XBearing-type connection with threads excluded



ASTM A325 Bolts Weight

Size & Length of Bolt Diameter Of A325 Bolt
1⁄2" 5⁄8" 3⁄4" 7⁄8" 1" 11⁄8" 11⁄4" 13⁄8 11⁄2
1 16.5 29.4 47.0 - - - - - -
11⁄4 17.8 31.3 49.6 74.4 104 - - - -
11⁄2 19.2 33.1 52.2 78 109 148 197 - -
13⁄4 20.5 35.3 55.3 81.9 114 154 205 261 333
2 21.9 37.4 58.4 86.1 119 160 212 270 344
21⁄4 23.3 39.8 61.6 90.3 124 167 220 279 355
21⁄2 24.7 41.7 64.7 94.6 130 174 229 290 366
23⁄4 26.1 43.9 67.8 98.8 135 181 237 300 379
3 27.4 46.1 70.9 103 141 188 246 310 391
31⁄4 28.8 48.2 74 107 146 195 255 321 403
31⁄2 30.2 50.4 77.1 111 151 202 263 332 416
33⁄4 31.6 52.5 80.2 116 157 209 272 342 428
4 33 54.7 83.3 120 162 216 280 353 441
41⁄4 34.3 56.9 86.4 124 168 223 289 363 453
41⁄2 35.7 59 89.5 128 173 230 298 374 465
43⁄4 37.1 61.2 92.7 133 179 237 306 384 478
5 38.5 63.3 95.8 137 184 244 315 395 490
51⁄4 39.9 65.5 98.9 141 190 251 324 405 503
51⁄2 41.2 67.7 102 146 196 258 332 416 515
53⁄4 42.6 69.8 105 150 201 265 341 426 527
6 44 71.9 108 154 207 272 349 437 540
61⁄4 - 74.1 111 158 212 279 358 447 552
61⁄2 - 76.3 114 163 218 286 367 458 565
63⁄4 - 78.5 118 167 223 293 375 468 577
7 - 80.6 121 171 229 300 384 479 589
71⁄4 - 82.8 124 175 234 307 392 489 602
71⁄2 - 84.9 127 179 240 314 401 500 614
73⁄4 - 87.1 130 183 246 321 410 510 626
8 - 89.2 133 187 251 328 418 521 639
81⁄4 - - - 192 257 335 427 531 651
81⁄2 - - - 196 262 342 435 542 664
83⁄4 - - - - - - 444 552 676
9 - - - - - - 453 563 689


ASTM A325 Type 3 Stud Bolts, Anchor Bolts, Countersunk Bolts, Fully Threaded Bolts, U Bolts supplier In India, Refer ASTM A325 Washer Dimensions And Sizes Available in stock


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A325 Chemical Composition

SA325 Type 1

Heat Analysis 120ksi, % 150ksi, %
Boron 0.003 maximum 0.003 maximum
Copper - -
Manganese (Mg) 0.60 minimum 0.60 minimum
Phosphorus 0.035 maximum 0.035 maximum
Sulfur 0.040 maximum 0.040 maximum
Nickel (Ni) - -
Chromium - -
Molybdenum - -
Carbon (C) 0.30 - 0.52 0.30 - 0.48*
Silicon 0.15 - 0.30 -

SA325 Type 3

Heat Analysis 120ksi, % Comp A 120ksi, % Comp B 120ksi, % Index 150ksi, % Index
Nickel (Ni) 0.25 - 0.45 0.50 - 0.80 0.20 minimum 0.20 minimum
Chromium 0.45 - 0.65 0.50 - 0.80 0.20 minimum 0.20 minimum
Molybdenum 0.06 maximum 0.10 minimum 0.10 minimum
Carbon (C) 0.33 - 0.40 0.38 - 0.48 0.30 - 0.52 0.30 - 0.53
Sulfur 0.040 maximum 0.040 maximum 0.040 maximum 0.040 maximum
Silicon 0.15 - 0.30 0.30 - 0.50
Copper 0.25 - 0.45 0.20 - 0.40 0.20 - 0.60 0.20 - 0.60
Manganese (Mg) 0.90 - 1.20 0.70 - 0.90 0.60 minimum 0.60 minimum
Phosphorus 0.035 maximum 0.035 maximum 0.035 maximum 0.035 maximum


Buy ASTM A325 Fasteners And Hex Nuts In Both Metric And Imperial (BSW, BSF, BA, UNC & UNF) Thread Forms, ASME SA325 High Strength Bolts, Lock Washer, Flat Washer exporter & manufacturer In India

ASTM A325 Mechanical Properties

Grade Tensile, ksi Yield, ksi minimum Elongation, % minimum RA, % minimum
(ASME SA490/ F2280) 150 ksi 150-173 130 14 40
(ASME SA325/ F1852) 120 ksi 120 minimum 92 14 35


ASTM A325 Washer Dimensions

ASTM A325 Washer Dimensions

Size Of Nominal Washer In Inch Inner Diameter Outer Diameter Wall Thickness, (T) Minimum Edge Distance, E
Nominal Maximum-Minimum Nominal Maximum-Minimum Maximum-Minimum
1/2 (0.500) 0.531 0.531-0.563 1.063 1.031-1.095 0.097-0.177 0.438
5/8 (0.625) 0.688 0.688-0.720 1.313 1.281-1.345 0.122-0.177 0.547
3/4 (0.750) 0.813 0.813-0.845 1.469 1.437-1.501 0.122-0.177 0.656
7/8 (0.875) 0.938 0.938-0.970 1.750 1.718-1.782 0.136-0.177 0.766
1 (1.000) 1.063 1.063-1.085 2.000 1.937-2.063 0.136-0.177 0.875
1 1/8 (1.125) 1.188 1.188-1.251 2.250 2.187-2.313 0.136-0.177 0.984
1 1/4 (1.250) 1.375 1.375-1.438 2.500 2.437-2.563 0.136-0.177 1.094
1 3/8 (1.375) 1.500 1.500-1.563 2.750 2.687-2.813 0.136-0.177 1.203
1 1/2 (1.500) 1.625 1.625-1.688 3.000 2.937-3.063 0.136-0.177 1.313


Custom Sizes ASTM A325 Galvanized Bolts Can Be Produced As Per Client Drawing, manufacturer of A325 Bolts & Nuts In India

ASTM A325 Threaded Rod Dimensions

ASTM A325 Threaded Rod Dimensions


ASTM A325 Nut Dimensions

ASTM A325 Nut Dimensions

Nominal Size Diameter of Thread In Inch Width Across Flats, (F) Width Across Corners, (G) Wall Thickness, (H) Fillet Radius, (R) Total Runout of Bearing Face FIM, Heavy Hex Nuts, Specified Proof Load
Nominal, inch Maximum-Minimum, inch Nominal, inch Maximum-Minimum <150 ksi ≥150 ksi
1/2 (0.500) 7/8 0.875-0.850 1.010-0.969 31/64 0.504-0.464 0.031-0.009 0.023 0.016
5/8 (0.625) 1 1/16 1.062-1.031 1.227-1.175 39/64 0.631-0.587 0.062-0.021 0.025 0.018
3/4 (0.750) 1 1/4 1.250-1.212 1.443-1.383 47/64 0.758-0.710 0.062-0.021 0.027 0.020
7/8 (0.875) 1 7/16 1.438-1.394 1.660-1.589 55/64 0.885-0.833 0.062-0.031 0.029 0.022
1 (1.000) 1 5/8 1.625-1.575 1.876-1.796 39/64 1.012-0.956- 0.093-0.062 0.031 0.024
1 1/8 (1.125) 1 13/16 1.812-1.756 2.093-2.002 1 7/64 1.139-1.079 0.093-0.062 0.033 0.027
1 1/4 (1.250) 2 2.000-1.938 2.309-2.209 1 7/32 1.251-1.187 0.093-0.062 0.035 0.030
1 3/8 (1.375) 2 3/16 2.188-2.119 2.526-2.416 1 11/32 1.378-1.310 0.093-0.062 0.038 0.033
1 1/2 (1.500) 2 3/8 2.375-2.300 2.742-2.622 1 15/32 1.505-1.433 0.093-0.062 0.041 0.036


Tolerances Of A325 Type 1 Heavy Hex Bolt

Diameter Of A325 Type 1 Heavy Bolt Lengths Of Bolt, Thru 6" Lengths Of Bolt, Over 6"
1/2" -0.12 -0.19
3/4" -0.19 -0.25
7/8" -0.19 -0.25
5/8" -0.12 -0.25
1-3/8" -0.25 -0.25
1-1/2" -0.25 -0.25
1" -0.19 -0.25
1-1/8" -0.25 -0.25
1-1/4" -0.25 -0.25


ASTM A325 Bolts Torque

Size Of Bolt TPI Tension Tightening Torque Range (ft lbs) (Minimum - Maximum)
Minimum Maximum Galvanized + Waxed Plain
12 13 12,000 14,000 50 - 58 100 - 117
58 11 19,000 23,000 99 - 120 198 - 240
34 10 28,000 34,000 175 - 213 350 - 425
78 9 39,000 47,000 284 - 343 569 - 685
1 8 51,000 61,000 425 - 508 850 - 1,017
118 7 64,000 77,000 600 - 722 1,200 - 1,444
114 7 81,000 98,000 844 - 1,021 1,687 - 2,042
138 6 97,000 117,000 1,111 - 1,341 2,223 - 2,681
112 6 118,000 143,000 1,475 - 1,788 2,950 - 3,575


ASTM A325 U Bolt Dimensions

ASTM A325 U Bolt Dimensions


A325 Structural Bolt Dimensions

A325 Structural Bolt Dimensions

Diameter Of Bolts (D) (F) (C) (H) T
Diameter Of Body Width Across Flats Width Across Corners Height Of Head Length Of Thread
Maximum Basic Maximum Minimum Maximum Minimum Basic Maximum Minimum Basic
12 0.515 78 0.875 0.850 1.010 0.969 516 0.323 0.302 1.00
58 0.642 1116 1.062 1.031 1.227 1.175 2564 0.403 0.378 1.25
34 0.768 114 1.250 1.212 1.443 1.383 1532 0.483 0.455 1.38
78 0.895 1716 1.438 1.394 1.660 1.589 3564 0.563 0.531 1.50
1 1.022 158 1.625 1.575 1.876 1.796 3964 0.627 0.591 1.75
118 1.149 11316 1.812 1.756 2.093 2.002 1116 0.718 0.658 2.00
114 1.277 2 2.00 1.938 2.309 2.209 2532 0.813 0.749 2.00
138 1.404 2316 2.188 2.119 2.526 2.416 2732 0.878 0.810 2.25
112 1.531 238 2.375 2.300 2.742 2.622 1516 0.974 0.902 2.25


ASTM A325 Bolt Strength

The stress area is calculated as follows:

As = 0.7854 [D-(0.9743/n)]

  • As = stress area, in2,
  • D = nominal bolt size
  • n = threads per inches


ASME SA325 Galvanized Fasteners Hardness Requirements

Size Of Bolt In Inch Nominal Length In Inch Hardness
Hardness In Brinell, HB Hardness In Rockwell B
1/2 – 1 < 2D 253-319 25-34
2D, ≥ ≤319 ≤34
1 1 /8 – 1 1 /2 < 3D 223-286 19-30
3D, ≥ ≤286 ≤30