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ASTM A194 Grade 7 Hex Nuts

Metric M6 through M100 ASME SA 194 Gr.7 Heavy Hex Nuts manufacturer in India

ASTM A194 Grade 7 Hex Nuts

PED approved manufacturer & supplier of ASTM A194 Gr 7 Reversible Locknuts, Lock Nuts, Flange Nut, Weld Nuts in India, Check dimensions, sizes, and latest price list ex Mumbai

ASTM A194 Grade 7 means Quenched & tempered Alloy steel heavy hex nut.

Origin Made in India
Dimensions ASME B18.2.1, ASME B18.3
Origin of material South America/ Japan / Korea / East Europe
Threads Configuration ASME B1.1 2A/3A Inch Unified Threads and B1.13M 6h Metric Coarse Threads
Sizes
  • Metric: M6 - M110
  • Inch: 1/4" - 4.5"

Types

  • SA 194 Grade 7 Hex Nuts
  • ASTM A194 Grade 7 Heavy Hex Nuts
  • SA 194 7 Castle Nuts
  • AISI 4140 A194 7 Sleeve Nuts
  • ASTM A194 Gr 7 Hex Jam Nuts
  • SA 194 Gr 7 Heavy Jam Nuts
  • ASME SA194 Grade 7 Hex Coupling Nuts
  • A194 7 Tee Nut
  • ASME SA194 Gr 7 Lock Nuts
  • ASTM A194 7 Rivet Nuts
  • Alloy Steel ASTM A194 gr 7 Lug Nuts
  • ASTM A194 Grade 7 Alloy Steel Nylon Insert Hex Lock Nuts

ASTM A194 Grade 7 Hex Nuts Chemical composition comparison

Material Grade Carbon (C) Manganese (Mn) Phosphorous, maximum Sulfur, maximum Silicon Chromium Nickel Molybdenum Other Elements
2, 2H and 2 HM 0.40% min. 1.00% max. 0.04% 0.05% 0.40% max
3 0.10% min. 1.00% max. 0.04% 0.03% 1.00% 4.0-6.0% 0.20-0.30%
4 0.40 -0.50% 0.70-0.90% 0.035% 0.04% 0.15-0.35% 0.20-0.30%
6 0.15% 1.00% 0.04% 0.03% 1.00% 11.5-13.5%
6F 0.15% 1.25% 0.06% 0.06% 1.00% 12.0-14.0% Selenium-0.15% min
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%
8 (AISI 304) 0.08% 2.00% max 0.05% 0.03% 1.00% max 18.0-20.0% 8.0-11.0%
8M (AISI 316) 0.08% 2.00% max 0.05% 0.30% 1.00% max 16.0-18.0% 10.0-14.0% 2.00-3.00%
8C 0.08% 2.00% 0.045% 0.03% 1.00% 17.0-19.0% 9.0-12.0% Columbium and Tantalum – 10x carbon content, min
8T 0.80% 2.00% 0.045% 0.30% 1.00% 17.0-19.0% 9.0-12.0% Titanium-0.70%max, Nitrogen-0.10%
8F 0.15% 2.00% 0.20% 0.15%min 1.00% 17.0-19.0% 8.0-10.0%
8R 0.06% 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%
8S 0.10% 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%
16 0.36-0.47% 0.45-0.70% 0.035% 0.40% 0.15-0.35% 0.80-1.15% 0.50-0.65% Vanadium-0.25-0.35%, Aluminum-0.015%

ASME SA 194 Grade 7 Hex Nuts sizes and dimensions

Nut Size Range
(mm)
Diameter*
(mm)
Nut Height
(mm)
Hex Nuts Jam Nuts Nylock Nuts
2 4 1.6 1.2 -
2.5 5 2 1.6 -
3 5.5 2.4 1.8 4
4 7 3.2 2.2 5
5 8 4 2.7 5
6 10 5 3.2 6
7 11 5.5 3.5 -
8 13 6.5 4 8
10 17 8 5 10
12 19 10 6 12
14 22 11 7 14
16 24 13 8 16
18 27 15 9 18.5
20 30 16 10 20

Please note: *
 This is the diameter across the flats. It is also the size of wrench to use.

Mechanical Properties of A194 Grade 7 Hex Nuts

Nominal Size, In. Temperature °F Proof Load Stress, ksi Hardness Rockwell Material
1/4 - 4 1100 80 C38 Medium Carbon Alloy Steel, Quenched and Tempered