What are the 4 things to consider before purchasing an ASTM F593 bolt ?

This specification encompasses bolts, hex cap screws, and studs produced from stainless steel in the diametrical range of 1/4 to 1-1/2 inches. We recommend the below considerations before purchasing an ASTM F593 bolt:

  • The application needs: It is a standard choice for general purposes demanding strength and corrosion resistance.
  • Alloy group: These products are available in seven groups, with the choice depending on the manufacturer or your specification. Alloy groups 1 and 2, covering grades like 304, 316, and their low-carbon versions, are the most common.
  • Trusted manufacturers procure premium, high-quality raw materials and use contemporary production techniques.
  • Heat treatment: An F593 threaded rod greater than 0.75” can undergo hot working or solution annealing, based on client needs.

ISO certified F593C stainless steel hex bolts manufacturer in India

ASTM F593 bolt manufacturer in India

Why can Hilton steel offer the lowest price for F593C stainless hex bolts?

Hilton Steel has a vast portfolio of F593C stainless hex bolts across different alloy groups, including austenitic, martensitic,and ferritic grades. The company designs and delivers these bolts per customer drawings. It focuses on quality compliance and uses advanced engineering for faster, more efficient production.

It helps Hilton Steel offer competitive prices to its client base.The company also takes pride in strict compliance with ASME standards and dimensional accuracy. It has developed a favorable reputation in the global market.

ASTM F593C bolt and ASTM F593 stainless steel bolts in various sizes ranging from ¼” to 1-½” in diameter

ASTM F593 bolt

ASTM F593 bolt

F593C stainless hex bolts

F593C stainless hex bolts

ASTM F593C bolt

ASTM F593C bolt

What are the 5 advantages of using an ASTM F593C bolt ?

These bolts are applicable in many applications, including outdoor and marine environments. An ASTM F593C boltoften uses austenitic stainless steel of Grade 304 and shows standout advantages:

  • Decent corrosion resistance
  • Low heat conductivity
  • High strength
  • Suitable for high temperatures
  • Good tensile strength (65 to 150 ksi)

Find the cheapest ASTM F593 fasteners suppliers in Mumbai and view F593G heavy hex bolt specifications

Table of Content

ASTM F593 specifications

ASTM F593 specifications

Grades Size Length Specifications
ASTM F593C/ F593D/ F593G/ F593H 1/4″ to 1-1/2″/ M1.6 – M48 3mm – 200mm ASTM F593  / ASME SF593
International Standard Diameter Thread Application
BS, UNI, ANSI, ISO, IS, JIS, GB, ASME, ASTM DIN 3/8″ to 1″ BSW, METRIC, UNF, UNC, BSF, custom
  • Petrochemical
  • Oil and Gas
  • Power Generation
Head Drive Temperature range Standard Coating
Phillips/Slot, Phillips, Slotted, Six-Lobe 2100 °F – 2300 °F (1149 °C – 1260 °C) ASME B18.3, B18.2.1 PTFE, zinc plated, black phosphate, hot dip galvanized
ASTM F593 screw, ASME SF593 shoulder bolts and F593 c washer with PMI, NDT & Shear Testing

ASTM F593 fasteners types

ASTM F593 stainless steel bolts

ASTM F593 stainless steel bolts

  • Coatings: Black Oxide, Cadmium, Galvanized, Teflon, Xylan, Zinc coatings

ASTM F593 fasteners

ASTM F593 fasteners

  • Temperature range: 2100 °F – 2300 °F (1149 °C – 1260 °C)
  • Tensile strength: 65ksi to 150 ksi

F593G heavy hex bolt

F593G heavy hex bolt

  • Yield strength: 20ksi to 65ksi
  • Sizes: 1/4″ to 1-1/2″
  • Metric sizes: M1.6 – M48

ASTM F593 screw

ASTM F593 screw

  • ASME standards: ASME B18.3, B18.2.1

ASME SF593 shoulder bolts

ASME SF593 shoulder bolts

  • Threads : UN/UNF, BSPP, NPT/NPTF, BSPT

F593 C washer

F593 C washer

  • Head styles : Hex, Square, Round, Pan, Flat, Button Head

ASTM F593 threaded rod

ASTM F593 threaded rod

  • Manufacturing methods: Cold forming, Hot Forging, Wire Forming

ASTM F593G socket head cap screw

ASTM F593G socket head cap screw

  • Grades: ASTM F593C/ F593D/ F593G/ F593H

ASTM F593 stud bolts

ASTM F593 stud bolts

  • Condition : AF, AH, CW, H, HT, SH
Check ASTM F593 threaded rod and ASTM F593G socket head cap screw available in zinc plating and hot-dip galvanizing coating as per ASME B18.3, B18.2.1

Marking on ASTM F593 bolt

f593A bolt

  • Diameter Range : 1/4 to 1-1/2
  • Tensile, ksi : 65 to 85
  • Yield, ksi min : 20
  • Rockwell Hardness : B85 max

f593b bolt

  • 1/4 to 1-1/2
  • 75 to 100 ksi
  • 30 ksi
  • B65 to 95 HRA

f593C bolt

  • 1/4 to 5/8
  • 100 to 150 ksi
  • 65 ksi
  • B95 to C32 HRA

 

f593D bolt

  • Diameter Range : 3/4 to 1-1/2
  • Tensile, ksi : 85 to 140
  • Yield, ksi min : 45
  • Rockwell Hardness : B80 to C32

F593E bolt

  • 1/4 to 1-1/2
  • 65 to 85 ksi
  • 20 ksi
  • B85 max

F593F bolt

  • 1/4 to 1-1/2
  • 75 to 100 ksi
  • 30 ksi
  • B65 to 95 HRA

 

F593G bolt

  • Diameter Range : 1/4 to 5/8
  • Tensile, ksi : 100 to 150
  • Yield, ksi min : 65
  • Rockwell Hardness : B95 to C32

F593H bolt

  • 3/4 to 1-1/2
  • 85 to 140 ksi
  • 45 ksi
  • B80 to C32 HRA

Seven alloy groups of F593 hex bolt

Group AlloyA ConditionB
1 304, 305, 384, 304L, 18-9LW, 302HQD (CW) Cold WorkedC
2 316, 316L (CW) Cold WorkedC
3 321, 347 (CW) Cold WorkedC
4 430E (CW) Cold WorkedC
5 410F (H) Hardened and tempered
6 431 (H) Hardened and tempered
7 630 (AH) Age Hardened

ASTM F593C bolt mechanical properties

Stainless Steel Alloys ConditionB Alloy Mechanical Property Marking Nominimumal Diameter, inch Full Size Tests Machined Specimen Tests
Tensile Strength, ksiC Yield Strength, ksiDC Rockwell Hardness Tensile Strength, ksiC Yield Strength, ksiDC Elongation in 4D, %
Austenitic Alloys
1 (303, 304, 304L, 305, 384, XM1, 18-9LW, 302HQ, 303Se) AF F593A 1/4 to 1-1/2, incl. 65 – 85 20 B85 maximum 60 20 40
1 (303, 304, 304L, 305, 384, XM1, 18-9LW, 302HQ, 303Se) A F593B 1/4 to 1-1/2, incl. 75 – 100 30 B65 to 95 70 30 30
1 (303, 304, 304L, 305, 384, XM1, 18-9LW, 302HQ, 303Se) CW1 F593C 1/4 to 5/8, incl. 100 – 150 65 B95 to C322 95 60 20
1 (303, 304, 304L, 305, 384, XM1, 18-9LW, 302HQ, 303Se) CW1 F593C 1/4 to 5/8, incl. 100 – 150 65 B95 to C322 95 60 20
1 (303, 304, 304L, 305, 384, XM1, 18-9LW, 302HQ, 303Se) CW2 F593D 3/4 to 1-1/2, incl. 85 – 140 45 B80 to C32 80 40 25
1 (303, 304, 304L, 305, 384, XM1, 18-9LW, 302HQ, 303Se) SH1 F593A 1/4 to 5/8, incl. 120 – 160 95 C24 to C36 115 90 12
1 (303, 304, 304L, 305, 384, XM1, 18-9LW, 302HQ, 303Se) SH2 F593B 3/4 to 1, incl. 110 – 150 75 C20 to C32 105 70 15
1 (303, 304, 304L, 305, 384, XM1, 18-9LW, 302HQ, 303Se) SH3 F593C 1-1/8 to 1-1/4, incl. 100 – 140 60 B95 to C30 95 55 20
1 (303, 304, 304L, 305, 384, XM1, 18-9LW, 302HQ, 303Se) SH4 F593D 1-3/8 to 1-1/2, incl. 95 – 130 45 B90 to C28 90 40 28
2 (316, 316L) AF F593E 1/4 to 1-1/2″, incl. 65 – 85 20 B85 maximum 60 20 40
2 (316, 316L) A F593F 1/4 to 1-1/2″, incl. 75 – 100 30 B65 to 95 70 30 30
2 (316, 316L) CW1 F593G 1/4 to 5/8, incl. 100 – 150 65 B95 to C322 95 60 20
2 (316, 316L) CW2 F593H 3/4 to 1-1/2, incl. 85 – 140 45 B80 to C32 80 40 25
2 (316, 316L) SH1 F593E 1/4 to 5/8, incl. 120 – 160 95 C24 to C36 115 90 12
2 (316, 316L) SH2 F593F 3/4 to 1, incl. 110 – 150 75 C20 to C32 105 70 15
2 (316, 316L) SH3 F593G 1-1/8 to 1-1/4, incl. 100 – 140 60 B95 to C30 95 55 20
2 (316, 316L) SH4 F593H 1-3/8 to 1-1/2, incl. 95 – 130 45 B90 to C28 90 40 28
3 (321, 347) AF F593J 1/4 to 1-1/2, incl. 65 – 85 20 B85 maximum 60 20 40
3 (321, 347) A F593K 1/4 to 1-1/2, incl. 75 – 100 30 B65 to 95 70 30 30
3 (321, 347) CW1 F593L 1/4 to 5/8, incl. 100 – 150 65 B95 to C322 95 60 20
3 (321, 347) CW2 F593M 3/4 to 1-1/2, incl. 85 – 140 45 B80 to C32 80 40 25
3 (321, 347) SH1 F593J 1/4 to 5/8, incl. 120 – 160 95 C24 to C36 115 90 12
3 (321, 347) SH2 F593K 3/4 to 1, incl. 110 – 150 75 C20 to C32 105 70 15
3 (321, 347) SH3 F593L 1-1/8 to 1-1/4, incl. 100 – 140 60 B95 to C30 95 55 20
3 (321, 347) SH4 F593M 1-3/8 to 1-1/2, incl. 95 – 130 45 B90 to C28 90 40 28
Ferritic Alloys
4 (430, 430F) AF F593X 1/4 to 1-1/2, incl. 55 – 75 30 B85 maximum 50 25 —
4 (430, 430F) A F593N 1/4 to 1-1/2, incl. 55 – 75 30 B85 maximum 50 25 —
4 (430, 430F) CW1 F593V 1/4 to 5/8, incl. 60 – 105 40 B75 to 98 55 35 —
4 (430, 430F) CW2 F593W 3/4 to 1-1/2, incl. 55 – 100 30 B65 to 95 50 25 —
Martensitic Alloys
5 (410, 416, 416Se) H F593P 1/4 to 1-1/2, incl. 110 – 140 90 C20 to 30 110 90 18
5 (410, 416, 416Se) H F593P 1/4 to 1-1/2, incl. 110 – 140 90 C20 to 30 110 90 18
5 (410, 416, 416Se) HT F593R 1/4 to 1-1/2, incl. 160 – 190 120 C34 to 45 160 120 12
6 (431) H F593S 1/4 to 1-1/2, incl. 125 – 150 100 C25 to 32 125 100 15
6 (431) HT F593T 1/4 to 1-1/2, incl. 180 – 220 140 C40 to 48 180 140 10
Precipitation Hardening Alloy
7 (630) AH F593U 1/4 to 1-1/2, incl. 135 – 170 105 C28 to 38 135 105 16

ASTM F593 screw chemical composition

Element, maximum except as shown Alloy Group 2, Type 316 Alloy Group 1, Type 304
Carbon 0.08% 0.08%
Phosphorus 0.045% 0.045%
Manganese 2.00% 2.00%
Sulfur 0.030% 0.030%
Chromium 16.0 to 18.0% 18.0 to 20.0%
Nickel 10.0 to 14.0% 8.0 to 10.5%
Silicon 1.00% 1.00%
Copper 1.00%
Molybdenum 2.00 to 3.00%

ASTM F593 stainless steel bolts grades

ASTM F593 type 316

ASTM F593 type 316

ASTM F593 type 304

ASTM F593 type 304

F593G heavy hex bolt grade equivalents

Alloy Group Alloy Type Alloy Designation
1 Austenitic 303, 304, 304L, 305, 384, XM1, 18-9LW, 302HQ, 303Se
2 Austenitic 316, 316L
3 Austenitic 321, 347
4 Ferritic 430, 430F
5 Martensitic 410, 416, 416Se
6 Martensitic 431
7 Precipitation Hardening 630 (17-4)

F593C stainless hex bolt dimensions

F593C stainless hex bolt dimensions

NOminimumAL SIZE (D) BODY DIAMETER ACROSS THE FLATS HEAD THICKNESS ACROSS CORNERS
D (maximum) D (minimum) F (maximum) F (minimum) H (maximum) H (minimum) C (maximum) C (minimum)
m10 10.00 9.78 17.00 15.73 6.63 6.17 18.48 17.77
m12 12.00 11.73 19.00 17.73 7.76 4.24 20.78 20.03
m14 14.00 13.73 22.00 20.67 9.09 8.51 24.25 23.35
m16 16.00 15.73 24.00 23.67 10.32 9.68 27.71 26.75
m20 20.00 19.67 30.00 29.16 12.88 12.12 34.64 32.95
m24 24.00 23.67 36.00 35.00 15.44 14.56 41.57 39.55
m30 30.00 29.67 46.00 45.00 19.48 17.92 53.12 50.85
m36 36.00 35.61 55.00 53.80 23.38 21.63 63.51 60.79
m42 42.00 41.38 65.00 62.90 26.97 25.03 75.06 71.71
m48 48.00 47.38 75.00 72.60 31.07 28.93 86.60 82.76
m56 56.00 55.26 85.00 82.20 36.2 33.80 98.15 93.71
m64 64.00 63.26 95.00 91.80 41.32 38.68 109.70 104.65
m72 72.00 71.26 105.00 101.40 46.45 43.55 121.24 115.60
m80 80.00 79.26 115.00 111.00 51.58 48.42 132.72 126.54
m90 90.00 89.13 130.00 125.50 57.74 54.26 150.11 143.07
m100 90.00 99.13 145.00 140.00 63.9 60.10 167.43 159.60

ASME SF593 shoulder bolts torque values

Diameter Torque Feet/Lbs
30% 70% 100%
9/16 23 53 75
1 107 249 356
1/2 16 36 52
5/8 31 73 104
7/8 71 166 237
3/4 55 129 184
1.1/4 179 417 596
1.1/8 127 297 424
1.3/8 186 435 622
1.9/16 168 392 560
1.1/2 246 574 821
1.5/8 191 445 636
1.7/8 298 696 994
1.3/4 240 561 801
2 366 853 1219
3 1289 3008 4297
2.1/2 733 1709 2442
2.1/4 529 1234 1762
2.3/4 986 2300 3285

F593 C washer mechanical test requirement

Item Nominimumal Length Tensile Load, lbf Full-Size Tests Machined Specimen Tests
Diameters3/4in. and Less Diameters Over3/4in. Wedge Tensile Strength Axial Tensile Strength Yield Strength Rockwell Hardness Tensile Strength Yield Strength Elongation
Square and hexbolts and hexcap screws less than 21/4D less than 3D all Option A B B Option C B B B
21/4Dand longer 3Dand longer 120000 maximum mandatory B mandatory B B B B
over 120000 Option A B Option A B Option B Option B Option B
Studs and otherbolts less than 21/4D less than 3D all B Option A B Option C B B B
21/4Dand longer 3D and longer 120000 maximum B mandatory mandatory B B B B
over 120000 B Option A Option A B Option B Option B Option B
SpecialsC all all all B B B mandatory B B B

F593 threaded rod tensile stress areas

Nominimumal Size, inch. Coarse Threads – UNC Fine Threads – UNF Thread Series – 8UN
Threads / inch Stress AreaA, in2 Threads / inch Stress AreaA, in2 Threads / inch Stress AreaA, in2
1/4 20 0.0318 28 0.0364 — —
5/16 18 0.0524 24 0.0580 — —
3/18 16 0.0775 24 0.0878 — —
7/16 14 0.1063 20 0.1187
1/2 13 0.1419 20 0.1599
9/16 12 0.1820 18 0.2030
5/8 11 0.2260 18 0.2560
3/4 10 0.3340 16 0.3730
7/8 9 0.4620 14 0.5090
1 8 0.6060 12 0.6630
1 1/8 7 0.7630 12 0.8560 8 0.790
1 1/4 7 0.9690 12 1.0730 8 1.000
1 3/8 6 1.1550 12 1.3150 8 1.233
1 1/2 6 1.4050 12 1.5810 8 1.492

ASTM F593 stud bolts recommended hardware

Nuts Washers
F594 SS304 or SS316

What precautions should be taken when installing ASTM F593 stainless steel bolts ?

Sourcing high-quality F593 stainless steel bolts andinstalling them without error is imperative for durable performance.Before installation, consider cleaning the surface and applying a protective coating. The technician should also wear gloves to avoid injury.

Using a moderate speed is essential to prevent heat build-up and thread damage. Lubrication is effective at preventing galling in an F593 C washer.

Is there corrosion resistance in ASTM F593 fasteners?

Manufacturers can deliver F593 fasteners with excellent corrosion resistance by picking the appropriate alloy group. For instance, 304, the most popular grade, and 304L, its lower carbon version, display good corrosion resistance. Grades 316 and 316L include molybdenum for improved endurance against chlorides, sulfides, and salt water.

ASME SF593 shoulder bolts produced from Grades 309 and 321 also deliver good resistance to corrosion due to the higher chromium and nickel content and the addition of titanium, respectively. The latter can also resist intergranular corrosion caused by carbide precipitation.

Is it expensive to buy a F593G heavy hex bolt? and why?

These bolts can be expensive as they use Grade 316 stainless steel for enhanced corrosion resistance and adaptability to high temperatures. An F593G heavy hex bolt also needs additional testing for intergranular corrosion. It increases the lead time and costs involved in the production.

Which 6 testing reports you must ask from ASTM F593 bolts manufacturers?

The mechanical test requirements for an F593G socket head cap screware in points 1-5 below. Manufacturers share the report under 6 to certify the quality and performance of the product for the specific application.

  • Tensile strength testing (wedge and axial)
  • Yield strength and elongation assessment
  • Hardness tests for an ASTM F593 screw
  • Intergranular corrosion testing
  • Inspection certificate (EN 10204, type 3.1)

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