fbpx

©

2009-2020 projectmaterialblog.com

Steel Nuts for Stud Bolts (ASTM A194)

Hexagonal steel nuts for stud bolts charts: dimensions (nuts width and thickness), weight (in kilograms and pounds), material specifications ASTM A194 and metric grades.

STEEL NUTS SIZES

Nuts width and thickness

 

Heavy Hex Nuts Dimensions ASME B18.2.2
Heavy Hex Nuts Dimensions ASME B18.2.2
HEAVY HEX NUTS DIAMETER (inches)Width
Across Flats
Width
Across Corners
FC
BasicMaxMinMaxMin
1/27/80.8750.8501.0100.969
5/81.1/161.0621.0311.2271.175
3/41.1/41.2501.2121.4431.382
7/81.7/161.4381.3941.6601.589
11.5/81.6251.5751.8761.796
1⅛1.13/161.8121.7562.0932.002
22.0001.9382.3092.209
1⅜2.3/162.1882.1192.5262.416
2.3/82.3752.3002.7422.622
1⅝2.9/162.5622.4812.9592.828
2.3/42.7502.6623.1753.035
1⅞2.15/162.9382.8443.3923.242
23.1/83.1253.0253.6083.449
3.1/23.5003.3884.0413.862
3.7/83.8753.7504.4744.275
4.1/44.2504.1124.9074.688
34.5/84.6254.4755.3405.102
55.0004.8385.7745.515
5.3/85.3755.2006.2075.928
5.3/45.7505.5626.6406.341
46.1/86.1255.9257.0736.755

 

Heavy Hex Nuts Dimensions ASME B18.2.2
Heavy Hex Nuts Dimensions ASME B18.2.2
HEAVY HEX NUT DIAMETER (inches)Hex Heavy Nut Thickness
BasicMaxMin
1/231/640.5040.464
5/839/640.6310.587
3/447/640.7580.710
7/855/640.8850.833
163/641.0120.956
1⅛1.7/641.1391.079
1.7/321.2511.187
1⅜1.11/321.3781.310
1.15/321.5051.433
1⅝1.19/321.6321.556
1.23/321.7591.679
1⅞1.27/321.8861.802
21.31/322.0131.925
2.13/642.2512.155
2.29/642.5052.401
2.45/642.7592.647
32.61/643.0132.893
3.3/163.2523.124
3.7/163.5063.370
3.11/163.7603.616
43.15/164.0143.862

STEEL NUTS WEIGHT

Steel Nuts Weight in Pounds

Heavy Hex Nuts DiameterFinished HexHeavy HexFinished JamHeavy Hex JamSquareHeavy Square
1/2″3.756.542.6245.787.87
5/8″7.3311.94.936.9610.814.3
3/4″11.919.37.71115.423.5
7/8″1929.71216.724.536.2
1″28.342.517.623.536.351.5
1-1/8″40.359.224.732.452.572.4
1-1/4″54.378.636.145.870.695.5
1-3/8″7310247.959.394.5125
1-1/2″94.313160.974.8122161
1-5/8″16291.6
1-3/4″151204100114
1-7/8″241134
2″224299140165
2-1/4″419227
2-1/2″564332
2-3/4″738429
3″950545
3-1/4″1194651
3-1/2″1526851
3-3/4″18121005
4″21801200

The weight of heavy hexagonal steel nuts for stud bolts in lbs / 100 units – ASME B18.2.2

Steel Nuts Weight in Kilograms

Heavy Hex Nuts DiameterFinished HexHeavy HexFinished JamHeavy Hex JamSquareHeavy Square
1/2″1.702.971.191.812.623.57
5/8″3.325.402.243.164.906.49
3/4″5.408.753.494.996.9810.66
7/8″8.6213.475.447.5711.1116.42
1″12.8319.277.9810.6616.4623.36
1-1/8″18.2826.8511.2014.6923.8132.83
1-1/4″24.6335.6516.3720.7732.0243.31
1-3/8″33.1146.2621.7226.8942.8656.69
1-1/2″42.7759.4127.6233.9255.3373.01
1-5/8″0.0073.470.0041.54
1-3/4″68.4892.5145.3551.70
1-7/8″0.00109.290.0060.770.00
2″101.58135.6063.4974.830.00
2-1/4″190.020.00102.940.00
2-1/2″255.770.00150.560.00
2-3/4″334.680.00194.550.00
3″430.830.00247.160.00
3-1/4″541.480.00295.230.00
3-1/2″692.040.00385.930.00
3-3/4″821.740.00455.770.00
4″988.630.00544.20
The weight of heavy hexagonal steel nuts for stud bolts in kilograms / 100 units – ASME B18.2.2

Bolts and Nuts Weight in Kilograms

Heavy Hex Nuts Diameter (Metric)Bolt Weight (kg)Nut Weight (kg)Total Weight (kg)
M12 x 350.0490.0130.062
M12 x 400.0530.0130.066
M12 x 450.0580.0130.071
M12 x 500.0620.0130.075
M12 x 550.0670.0130.080
M12 x 600.0710.0130.084
M12 x 650.0720.0130.085
M12 x 700.0800.0130.093
M12 x 750.0850.0130.098
M12 x 800.0890.0130.102
M12 x 850.0940.0130.107
M12 x 900.0980.0130.111
M12 x 950.1030.0130.116
M12 x 1000.1070.0130.120
M12 x 1050.1110.0130.124
M12 x 1100.1160.0130.129
M 16X350.0870.0320.119
M 16X400.0940.0320.126
M 16X450.1020.0320.134
M 16X500.1100.0320.142
M 16X550.1180.0320.150
M 16X600.1260.0320.158
M 16X650.1320.0320.164
M 16X700.1410.0320.173
M 16X750.1480.0320.180
M 16X800.1530.0320.185
M 16X850.1610.0320.193
M 16X900.1670.0320.199
M 16X950.1770.0320.209
M 16X1000.1860.0320.218
M 16X1050.1950.0320.227
M 16X1100.2030.0320.235
M 16X1150.2110.0320.243
M 16X1200.2200.0320.252
M 16X1250.2280.0320.260
M 16X1300.2350.0320.267
M 16X1350.2430.0320.275
M 16X1400.2510.0320.283
M 16X1450.2590.0320.291
M 16X1500.2670.0320.299
M 16X1550.2700.0320.302
M 16X1600.2780.0320.310
M 16X1650.2860.0320.318
M 16X1700.2940.0320.326
M 16X1750.3020.0320.334
M 16X1800.3100.0320.342
M 16X1850.3180.0320.350
M 16X1900.3260.0320.358
M 16X1950.3340.0320.366
M 16X2000.3420.0320.374
M 20X450.1730.0610.234
M 20X500.1860.0610.247
M 20X550.1980.0610.259
M 20X600.2110.0610.272
M 20X650.2230.0610.284
M 20X700.2350.0610.296
M 20X750.2480.0610.309
M 20X800.2600.0610.321
M 20X850.2730.0610.334
M 20X900.2850.0610.346
M 20X950.2970.0610.358
M 20X1000.3100.0610.371
M 20X1050.3220.0610.383
M 20X1100.3340.0610.395
M 20X1150.3460.0610.407
M 20X1200.3590.0610.420
M 20X1250.3710.0610.432
M 20X1300.3840.0610.445
M 20X1350.3960.0610.457
M 20X1400.4080.0610.469
M 20X1450.4210.0610.482
M 20X1500.4330.0610.494
M 20X1550.4450.0610.506
M 20X1600.4580.0610.519
M 20X1650.4700.0610.531
M 20X1700.4820.0610.543
M 20X1750.4950.0610.556
M 20X1800.5060.0610.445
M 20X1850.5180.0610.457
M 20X1900.5300.0610.469
M 20X1950.5420.0610.481
M 20X2000.5540.0610.493
M 24X450.2580.1040.362
M 24X500.2760.1040.380
M 24X550.2940.1040.398
M 24X600.3120.1040.416
M 24X650.3300.1040.434
M 24X700.3480.1040.452
M 24X750.3660.1040.470
M 24X800.3840.1040.488
M 24X850.4020.1040.506
M 24X900.4200.1040.524
M 24X950.4370.1040.541
M 24X1000.4560.1040.560
M 24X1050.4710.1040.575
M 24X1100.4920.1040.596
M 24X1150.5100.1040.614
M 24X1200.5280.1040.632
M 24X1250.5460.1040.650
M 24X1300.5590.1040.663
M 24X1350.5820.1040.686
M 24X1400.5980.1040.702
M 24X1450.6180.1040.722
M 24X1500.6380.1040.742
M 24X1550.6560.1040.760
M 24X1600.6740.1040.778
M 24X1650.6880.1040.792
M 24X1700.7090.1040.813
M 24X1750.7270.1040.831
M 24X1800.7450.1040.849
M 24X1850.7620.1040.866
M 24X1900.780.1040.884
M 24X1950.7980.1040.902
M 24X2000.8160.1040.920

STEEL NUTS MATERIALS

ASTM A194

The ASTM A194 specification covers a variety of carbon, alloy, and martensitic and austenitic stainless steel nuts. Hex heavy nuts are components of boltings sets for flanges.

These nuts are intended for high-pressure or high-temperature service or both. Bars from which the nuts are made shall be hot-wrought.

According to the ASTM A194 norm, the material may be further processed by centerless grinding or by cold drawing.

Austenitic stainless steel may be solution annealed or annealed and strain-hardened. Each alloy shall conform to the chemical composition requirements prescribed.

Hardness tests, proof of load tests, and cone proof load tests shall be made to all nuts to meet the requirements specified.

ASTM A194 stated in either inch-pound units or SI units are to be regarded separately as standard.
The values stated in each system are not exact equivalents; therefore, each system must be used independently by the other. Combining values from the two systems may result in a non-conformity with the specification of the ASTM A194 norm.
Within the text, the SI units are shown in brackets. ASTM A194  covers the size from 1/4 inch. through 4 inches. and the metric sizes between M6 and M100 nominal diameter. It also covers austenitic stainless steel nuts in the size range 1/4 inch. and M6 nominal and upper.
Unless otherwise specified, the American National Standard Heavy Hex Series (ANSI B 18.2.2) shall be used for the threading of the nuts. Heavy hex nuts > =  1 inch. nominal size shall be UNC Series Class 2B fit.
Nuts over 1 inch. nominal size shall be either UNC Series Class 2B fit or 8 UN Series Class 2B fit. High strength ASTM A194 grade 2H nuts are the most common type of steel nuts used in combination with A193 B7 stud bolts.
The most common grades of ASTM A194 heavy hex steel nuts are:
  • ASTM A194 2H: Quenched & tempered carbon steel heavy hex nuts
  • ASTM A194 2HM: Quenched & tempered carbon steel heavy hex nuts
  • ASTM A194 4: Quenched & tempered carbon-molybdenum heavy hex nuts
  • ASTM A194 3
  • ASTM A194 6
  • ASTM A194 7: Quenched & tempered alloy steel heavy hex nuts
  • ASTM A194 7M: Quenched & tempered alloy steel heavy hex nuts
  • ASTM A194 8: Stainless AISI 304 heavy hex nuts
  • ASTM A194 8A
  • ASTM A194 8M: Stainless AISI 316 heavy hex nuts
  • ASTM A194 8MA
  • ASTM A194 8C
  • ASTM A194 8T

ASTM A194 Chemical Composition

ASTM A194 NUTSCarbonManganesePhosphorous, maxSulfur, maxSiliconChromiumNickelMolybdenumOther Elements
ASTM A194 grade 2, 2H and 2 HM0.40% min.1.00% max.0.04%0.05%0.40% max
ASTM A194 grade 30.10% min.1.00% max.0.04%0.03%1.00%4.0-6.0%0.20-0.30%
ASTM A194 grade 40.40 -0.50%0.70-0.90%0.035%0.04%0.15-0.35%0.20-0.30%
ASTM A194 grade 60.15%1.00%0.04%0.03%1.00%11.5-13.5%
ASTM A194 grade 6F0.15%1.25%0.06%0.06%1.00%12.0-14.0%Selenium-0.15% min
ASTM A194 grade 7 and 7M (AISI 4140)0.37-0.49%0.65-1.10%0.04%0.04%0.15-0.035%0.75-1.20%0.15-0.25%
ASTM A194 grade 8 (AISI 304)0.08%2.00% max0.05%0.03%1.00% max18.0-20.0%8.0-11.0%
ASTM A194 grade 8M (AISI 316)0.08%2.00% max0.05%0.30%1.00% max16.0-18.0%10.0-14.0%2.00-3.00%
ASTM A194 grade 8C0.08%2.00%0.045%0.03%1.00%17.0-19.0%9.0-12.0%Columbium and Tantalum – 10x carbon content, min
ASTM A194 grade 8T0.80%2.00%0.045%0.30%1.00%17.0-19.0%9.0-12.0%Titanium-0.70%max, Nitrogen-0.10%
ASTM A194 grade 8F0.15%2.00%0.20%0.15%min1.00%17.0-19.0%8.0-10.0%
ASTM A194 grade 8R0.06%4.0-6.0%0.045%0.03%1.00%20.5-23.5%11.5-13.5%1.50-3.00%Columbium and Tantalum-0.10-0.30%, Nirogen-0.20-0.40%, Vanadium-0.10-0.30%
ASTM A194 grade 8S0.10%7.0-9.0%0.060%0.03%3.5-4.5%16.0-18.0%8.0-9.0%Nitrogen-0.08-0.18%
ASTM A194 grade 160.36-0.47%0.45-0.70%0.035%0.40%0.15-0.35%0.80-1.15%0.50-0.65%

ASTM A194 Mechanical Properties

Grade Identification Marking5SpecificationMaterialNominal Size, In.Tempering Temp. °FProof Load Stress, ksiHardness RockwellSee Note
MinMax
ASTM A194 Gr 2ASTM A194 Grade 2Medium Carbon Steel1/4 – 401501593521,2,3
ASTM A194 Gr 2HASTM A194 Grade 2HMedium Carbon Steel, Quenched and Tempered1/4 – 4850175C24C381,2
ASTM A194 Gr 2HMASTM A194 Grade 2HMMedium Carbon Steel, Quenched and Tempered1/4 – 411501501592371,2,3
ASTM A194 Gr 4ASTM A194 Grade 4Medium Carbon Alloy Steel, Quenched and Tempered1/4 – 41100175C24C381,2
ASTM A194 Gr 7ASTM A194 Grade 7Medium Carbon Alloy Steel, Quenched and Tempered1/4 – 41100175C24C381,2
ASTM A194 Gr 7MASTM A194 Grade 7MMedium Carbon Alloy Steel, Quenched and Tempered1/4 – 411501501592371,2,3
ASTM A194 Gr 8ASTM A194 Grade 8Stainless AISI 3041/4 – 4801263004
ASTM A194 Gr 8MASTM A194 Grade 8MStainless AISI 3161/4 – 4801263004

Metric Steel Nuts Materials

  • Stainless steel 18-8 (A-2)Also known as A-2 stainless, 18-8 is the most common grade of stainless steel for general use.
  • Stainless steel 316 (A-4)Also known as A-4 stainless, 316 is a highly corrosion resistant grade of stainless steel. Ideal for saltwater and chlorine environments. More expensive than 18-8.
  • Zinc-plated steelA low carbon steel for general use. Zinc plated for moderate corrosion resistance.
  • Zinc plated class 8.8 steelA tempered medium carbon steel. Class 8.8 is hardened, but it is not as strong as class 10.9. It is commonly found in automotive applications. Class 8.8 is similar to grade 5. Zinc plated for moderate corrosion resistance.
  • Zinc plated class 10.9 steel: A tempered medium carbon steel. Class 10.9 is stronger than class 8.8 and is commonly found in high strength automotive applications. Class 10.9 is similar to grade 8. Zinc plated for moderate corrosion resistance.
  • Chrome-plated steelA low carbon steel for general use. Chrome-plated and polished for a mirror-like finish.

Comments

This post currently has 2 responses

Leave a Reply

Your email address will not be published. Required fields are marked *

Sidebar