Alloy Steel GR 7 Fasteners


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The raw material offers increased strength and hardenability to finished product. Also, it provides corrosion resistance and the ability to work in extreme temperature ranges. Such properties, Arrow Piping Solutions., is usually suitable to use in various industrial applications. The company has earned popularity for offering the Alloy Steel GR 7 Fasteners, due to increased hardness, durability and chemical resistance.


Arrow Piping Solutions. carries a wide range of Alloy Steel GR 7 fasteners in a variety of size, dimensions standards and tolerance to meet your project's needs—including fasteners in dimension as per ASME B1.1, ASME B18.2.1, ASME B18.2.2, ASME B18.2.8, ASME B18.6.3, ASME B18.21.1, ASME B1.13M Fasteners / DIN , ANSI, JIS, ASTM standards specifications / weight chart & thickness of Alloy Steel Grade 7 fasteners.


Arrow Piping Solutions. has gained years of industry experience and knowledge to produce a quality product. Precisely designed and manufactured products have broad industrial applications in some industries like chemicals, fats, fertilizers. Besides this, our product is suitable to use in the construction industry, medical pharmaceutical, etc. Alloy Steel GR 7 Fasteners are available in varied shapes and sizes.


Arrow Piping Solutions. offers the entire range of products only after end to end testing. Alloy Steel GR 7 Fasteners is product tested and confirmed for quality and usability purposes in our laboratory. Besides our expert conduct a set of tests under the guidance of our quality experts. Our group of production experts checks the Alloy Steel GR 7 Fasteners for various parameters and deliver a flawless and exclusive range to the clients. We have created collaboration with partners from different industrial areas.

Alloy Steel GR 7 Fasteners Specifications

Specification ASTM A194 / ASME SA194
Dimension DIN, ISO, ASTM, JIS, BS, GB, IS and all International Standards
Size Range M3 - M56 | 3/6" to 2" | Custom Sizes
Length 3 mm to 200 mm

Alloy Steel ASTM A194 GR 7 Grades

Grade Raw Material Description
GR 7 Alloy Steel Quenched & Tempered

Alloy Steel GR 7 Fasteners Dimensions

Full Range of Alloy Steel GR 7 Fastener Products both Imperial & Metric. Dimensions range from M3 to M72

Product Type Standards
Hexagon Bolts / Set Screws DIN 931, DIN 933, BS 1768, UNI 5739, ISO 4014, ISO 4017, ANSI B18.2.1
Stud Bolts BS4882, DIN 976, BS 1769, BS 1083, BS 3692
Hexagon Nuts DIN 934, BS 1768, ISO 4032, ISO 4033, ANSI B18.2.2
Socket Capscrews DIN 912, DIN 6912, DIN 7984, ANSI B18.3, ISO 4762, UNI 5931
Socket & Slotted Set Screws DIN 913, DIN 914, DIN 915, DIN 916, DIN 551, DIN 553, DIN 438
Socket & Slotted Countersunk Screws DIN 963, DIN 7991, BS 4168, BS 1981, BS 2470
Studs DIN 938, DIN 939, DIN 2510, BS 4439, BS 2693
Washers DIN 125, DIN 9021, BS 4320, BS 3410
Spring Washers DIN 127, BS 4464, BS 1802

ASTM A194 GR 7 Fasteners Chemical Composition

C Mn P S Si Mo Cr
Alloy Steel GR 7 0.37-0.49% 0.65-1.10% 0.04% 0.04% 0.15-0.035% 0.15-0.25% 0.75-1.20%

Alloy Steel ASTM A194 GR 7 Fasteners Mechanical Properties

Specification Marking Nom. Size, In. Tempering Temp. °F Proof Load Stress, ksi Hardness Min Hardness Max
A194 Gd 7 7 1/4 - 4 1100 175 C24 C38

ASTM A194 GR 7 Hardness Requirement

Grade & Type Brinell Hardness Rockwell Hardness C Scale Rockwell Hardness B Scale
GR 7 248-327 24 - 35 -

ASTM A194 GR 7 Proof Load (Inch Series)

Nominal Size, inch Threads per inch Stress Area inch Proof Load, lbf Grade 2H, 4, 7, 16 Heavy Hex Proof Load, lbf Grade 2H, 4, 7, 16 Hex
1/4" 20 0.0316 4770 4300
5/16" 18 0.0524 7860 7070
3/8" 16 0.0774 11620 10460
7/16" 14 0.1063 15940 14350
1/2" 13 0.1419 21280 19160
9/16" 12 0.1820 27300 24570
5/8" 11 0.2260 33900 30510
3/4" 10 0.3340 50100 45090
7/8" 9 0.4620 69300 62370
1" 8 0.606 90900 81810
1 1/8" 8 0.7900 118500 106700
1 1/4" 8 1.0000 150000 135000
1 3/8" 8 1.2330 185000 166500
1 1/2" 8 1.492 223800 201400

ASTM A194 GR 7 Marking

Grade Type Hot Forged or Cold Punched Nuts Nuts Machined from Bar Stock
GR 7 7 7B

Alloy Steel GR 7 Fasteners Application Industries

  • Textile machinery
  • Oil and gas industry
  • Pulp and paper industry
  • Power plants
  • Energy industries
  • Furniture
  • Pharmaceutical processing industry
  • Modern architecture
  • Home appliances
  • Water waste projects
  • Synthetic fiber
  • Heat exchanger
  • Fluid piping
  • Dairy and food processing