• +(91) 022-6659 5844
  • sales@jigneshsteel.com

SA 453 Gr 660 Hex Bolt & ASTM A453 Stud Bolt manufacturer in India

Known to be as a precipitation hardening stainless steel, this alloy is an austenitic grade that maybe sometimes characterised as a nickel alloy. This is because of the ASTM A453 Grade 660 Bolts have a comparatively higher content of nickel in its alloy for any stainless steel. The ASTM A453 Grade 660 Class A Socket Head Cap Screws are extensively used as fastening for applications involving elevated temperature. Which is why many manufacturers recommend using grade ASTM A453 660 Larger size Bolts/ Nuts/ Washers for applications where the operating temperatures could rise up to 700°C.

Along with meeting the chemical requirements of the specification, the A453 660B Heavy Hex Bolts material is to be subjected to different tests. For instance, common tests include a tension test, stress-rupture test, as well as hardness tests. Moreover, the Alloy A286 Grade 660 Threaded Rod needs to conform to certain requirements like the yield and tensile strength. In addition to the aforementioned requirements, the UNS S66286 A453 Gr 660 Nuts must conform to the reduction of area, elongation, Brinell hardness, and Rockwell hardness. Each class under the ASTM A453 Stud Bolt specification are required to meet the hardening requirement and solution treatment requirements.

ASTM A453 Grade 660 Fasteners

ASTM A453 Grade 660 Fasteners

ASTM A453 Grade 660 Bolts

ASTM A453 Grade 660 Bolts

ASTM A453 GRADE 660A Threaded Rod and Studs

ASTM A453 GRADE 660A Threaded Rod and Studs

Incoloy Alloy A286 Hex Bolt

Incoloy Alloy A286 Hex Bolt

ASTM A453 GRADE 660B Stud Bolt

ASTM A453 GRADE 660B Stud Bolt

A286 UNS S66286 Nuts

A286 UNS S66286 Nuts

UNS S66286 A453 Gr 660 Nuts and A453 660B Heavy Hex Bolts material exporter and supplier in Mumbai

ASTM A453 Grade 660 Bolts
ASTM A453 Grade 660 Bolts Price List India

Check latest price list of Alloy A286 Grade 660 Threaded Rod and ASTM A453 660 Larger size Bolts/ Nuts/ Washers ex Mumbai with EN 10204 Type 3.1 MTC

Material Price in India
ASTM A 453/ A453M Grade 660 Nuts INR 9,650/kg
SA 453 Gr 660 Studs with 2 Nuts, CL A, UNC, Size: 1-1/4 X 9 INR 10,440/kg
A453 Gr 660A Heavy Hex Nuts, Size : 7/8-9 INR 1,828/kg

Call us or send us an email to sales@jigneshsteel.com for more price ex Mumbai.

A286 UNS S66286 Bolts Marking
Grade Class A Class B Class C Class D
Grade 660 JS 660A JS 660B JS 660C JS 660D NR
ASTM A453 Grade 660 Fasteners Specifications


Other Trade Name: GRADE 660, ASTM A286, UNS S66286, A453 (VO1.01), ASTM A638 (VO1.03), Incoloy A286, Alloy A286, NAS 660, ATI A286

ASTM Specification A453 / A638 / A891
ASME / ASTM Grades
  • ASME SA 453/ ASTM A453 GRADE 660A
  • ASME SA 453/ ASTM A453 GRADE 660B
  • ASME SA 453/ ASTM A453 GRADE 660C
  • ASME SA 453/ ASTM A453 GRADE 660D
  • ASME SA 286/ ASTM A286 GRADE 660A
  • ASME SA 286/ ASTM A286 GRADE 660B
  • ASME SA 286/ ASTM A286 GRADE 660C
  • ASME SA 286/ ASTM A286 GRADE 660D
  • ASME SA 638/ ASTM A638 TYPE1
  • ASME SA 638/ ASTM A638 TYPE2
  • ASME SA 891/ ASTM A891 TYPE1
  • ASME SA 891/ ASTM A891 TYPE2
AMS 5726, 5731, 5732, 5734, 5735, 5736, 5737, 5853, 5895, 5525, 5858
ASTM A453 Grade 660 Bolts Class A/ B/ C/ D
SA 453 Gr 660 Hex Bolts Size Metric
  • Dia: M10 - M110
  • Length: 12 - 1200MM
ASTM A453 GRADE 660A Hex Bolts Size Inch
  • Dia: 1/2" - 4.0"
  • Length: 1/2" - 52"
Incoloy Alloy A286 Eye Bolts Metric Size
  • Dia: M10 - M48
ASTM A453 GRADE 660B Stud Bolt Metric Size
  • Dia: M10 - M110
  • Length: 12 mm - 6000 mm
A286 UNS S66286 Stud Bolt Inch
  • Dia: 1/2" - 4.1/2"
  • Length: 1/2" - 236"
ASTM A638 grade 660 Type 1 Hex Nut (DIA)
  • Metric: M6 - M110
  • Inch: 1/4" - 4.5"
A453 Gr 660 Plain Washer (DIA)
  • Metric: M6 - M110
  • Inch: 1/2" - 4.1/2"
ASTM A453 Grade 660 Bolts International Standard IS, ANSI, ASTM DIN, ISO, JIS, GB, ASME, BS, UNI
ASTM A638 Gr 660 Type 2 Bolts Standard Sizes M10, M4, M16, M36 M2.5, M6, M30, M12, M8, M14, M2, M3, M20, M24, M5 to M160
Grade 660 Fasteners Threads BSF, UNF METRIC, UNC, UNEF, BSW or as required
ASME/ ANSI - American Standard ASTM A453 Grade 660 Bolts
  • ANSI B 28.2.4 1M
  • ANSI B 18.2.4 2M
  • ASME B18.5
  • ASME B18.2.2
DIN German Standard ASTM A453 Grade 660 Bolts DIN 933, DIN 931, DIN 970, DIN 934
ISO Standard ASTM A891 TYPE 2 Bolts ISO 4033, : ISO 4032, JIS standards
A453 660B Bolts / Screws Head Drive Phillips, Slotted, Phillips/Slot, Six-Lobe
MTC (Manufacturer Test Certificate) EN 10204 / 3.1
ASTM A453 Grade 660 Class A Nut Bolt Finishing 
  • Zinc white, (yellow, black, blue), black oxide,
  • Dacroment, Geometry, plated zinc-nickel, anodizing, nickel plated,
  • Stainless steel: Passivated Self-Colour, Bright Zinc Plated (BZP),
  • Hot Dip Galvanised (HDG), Sherardized, DACROMET and Mechanically Applied coating
A453 Gr 660 Stainless Steel Fasteners Production Process
  • M2-M24: Cold Forging, hot forging
  • M24-M100, machining and CNC for Customized connecting element
Export Market
  • Dubai, UAE
  • Sheffield, England
  • Malaysia
  • Houston, Texas
  • Singapore
  • Edmonton, Canada
  • and others
ASTM A453 Grade 660 Bolts Coating
  • Xylon Coated Fasteners
  • Phosphate Coated Fasteners
  • Hot Dipped Galvanizing Coated Fasteners
  • Teflon Coated Fasteners
  • Zinc Coated Fasteners
  • Cadmium Coated Fasteners
  • Ptfe Coated (Teflon) Fasteners
ASTM A286 Grade 660 Fasteners Packing Wooden Pallet, Canton, Carton / Small Box or as required
Other requirements NACE MR-0175 ,
Cameron MS-003030
314 Elliott Turbine MS 618
Fairchild MS 301
Weatherford WS-881
Application Gas Turbine, Jet Engine, Oil & Gas Industry
Types of SA 453 Gr 660 Bolts

Wide range of ASTM A453 Grade 660 Class A Socket Head Cap Screws & ASTM A453 Gr 660 Bolts in India

ASTM A453 Grade 660 Flange Bolts

ASTM A453 Grade 660 Flange Bolts

SA 453 Gr 660 Heavy Hex Bolts

SA 453 Gr 660 Heavy Hex Bolts

ASTM A453 GRADE 660A Hex Bolts

ASTM A453 GRADE 660A Hex Bolts

Incoloy Alloy A286 Square Bolts

Incoloy Alloy A286 Square Bolts

ASTM A453 GRADE 660B U Bolts

ASTM A453 GRADE 660B U Bolts

A286 UNS S66286 Eye Bolts

A286 UNS S66286 Eye Bolts

ASTM A453 Grade 660 Lag Bolts

ASTM A453 Grade 660 Lag Bolts

SA 453 Gr 660 Anchor Bolts

SA 453 Gr 660 Anchor Bolts

ASTM A453 GRADE 660A Hex Head Bolts

ASTM A453 GRADE 660A Hex Head Bolts

Incoloy Alloy A286 Carriage Bolts

Incoloy Alloy A286 Carriage Bolts

ASTM A453 GRADE 660B Allen Cap Bolt

ASTM A453 GRADE 660B Allen Cap Bolt

A286 UNS S66286 Countersunk Bolts

A286 UNS S66286 Countersunk Bolts

ASTM A453 GRADE 660A Nuts Types
ASTM A453 Grade 660 Eye Nuts

ASTM A453 Grade 660 Eye Nuts

SA 453 Gr 660 Heavy Hex Nuts

SA 453 Gr 660 Heavy Hex Nuts

ASTM A453 GRADE 660A Hex Nuts

ASTM A453 GRADE 660A Hex Nuts

Incoloy Alloy A286 Jam Nuts

Incoloy Alloy A286 Jam Nuts

ASTM A453 GRADE 660B Lock Nuts

ASTM A453 GRADE 660B Lock Nuts

A286 UNS S66286 Panel Nuts

A286 UNS S66286 Panel Nuts

ASTM A638 grade 660 Type 1 Square Nuts

ASTM A638 grade 660 Type 1 Square Nuts

A453 Gr 660 T-Nuts For Wood

A453 Gr 660 T-Nuts For Wood

ASTM A638 Gr 660 Type 2 Wheel Nuts and Caps

ASTM A638 Gr 660 Type 2 Wheel Nuts and Caps

Grade 660 Wing Nuts

Grade 660 Wing Nuts

ASTM A891 TYPE 2 Cage Nuts and Spring Nuts

ASTM A891 TYPE 2 Cage Nuts and Spring Nuts

A453 660B Self Locking Nuts

A453 660B Self Locking Nuts

Incoloy Alloy A286 Screws Types
ASTM A453 Grade 660 Class A Tek Screws

ASTM A453 Grade 660 Class A Tek Screws

A453 Gr 660 Stainless Steel Deck Screws

A453 Gr 660 Stainless Steel Deck Screws

ASTM A286 Grade 660 Concrete Screws

ASTM A286 Grade 660 Concrete Screws

ASTM A453 Socket Head Cap Screw

ASTM A453 Socket Head Cap Screw

ASTM A453 Grade 660 Eye Screw

ASTM A453 Grade 660 Eye Screw

SA 453 Gr 660 Thumb Screw

SA 453 Gr 660 Thumb Screw

ASTM A453 GRADE 660A Wood Screw

ASTM A453 GRADE 660A Wood Screw

Incoloy Alloy A286 Coach Screw

Incoloy Alloy A286 Coach Screw

ASTM A453 GRADE 660B Hex Head Lag Screw

ASTM A453 GRADE 660B Hex Head Lag Screw

A286 UNS S66286 12-Point Flange Head Cap Screws

A286 UNS S66286 12-Point Flange Head Cap Screws

ASTM A638 grade 660 Type 1 Wing Screw

ASTM A638 grade 660 Type 1 Wing Screw

A453 Gr 660 Captive Panel Screws

A453 Gr 660 Captive Panel Screws

ASTM A638 Gr 660 Type 2 Hex Cap Screw

ASTM A638 Gr 660 Type 2 Hex Cap Screw

Grade 660 Allen Cap Screw

Grade 660 Allen Cap Screw

ASTM A891 TYPE 2 Grub Screw

ASTM A891 TYPE 2 Grub Screw

A453 660B Fully Threaded Screw

A453 660B Fully Threaded Screw

ASTM A453 Grade 660 Class A Torx Screw

ASTM A453 Grade 660 Class A Torx Screw

A453 Gr 660 Stainless Steel Pan Head Screw

A453 Gr 660 Stainless Steel Pan Head Screw

ASTM A286 Grade 660 Truss Head Screw

ASTM A286 Grade 660 Truss Head Screw

ASTM A453 Flat Head Screw

ASTM A453 Flat Head Screw

Types of ASTM A453 GRADE 660B Threaded Rod and Studs

Looking to buy A453 660 Bolts and Nuts at factory price? Buy direct from the manufacturer of ASTM A453 Gr 660 Stainless Steel Class A/B/C/D Nut Bolt Fasteners in India

ASTM A453 Grade 660 Stud Bolts

ASTM A453 Grade 660 Stud Bolts

SA 453 Gr 660 Double Ended Studs

SA 453 Gr 660 Double Ended Studs

ASTM A453 GRADE 660A Tie Rod

ASTM A453 GRADE 660A Tie Rod

Incoloy Alloy A286 Fully Threaded Studs

Incoloy Alloy A286 Fully Threaded Studs

ASTM A453 GRADE 660B Threaded Rod

ASTM A453 GRADE 660B Threaded Rod

A286 UNS S66286 Unc Stud Bolt

A286 UNS S66286 Unc Stud Bolt

Different types of A286 UNS S66286 Washers
ASTM A453 Grade 660 Cup Washer

ASTM A453 Grade 660 Cup Washer

SA 453 Gr 660 Square Washer

SA 453 Gr 660 Square Washer

ASTM A453 GRADE 660A Lock Washer

ASTM A453 GRADE 660A Lock Washer

Incoloy Alloy A286 Countersunk Washer

Incoloy Alloy A286 Countersunk Washer

ASTM A453 GRADE 660B Belleville Washer

ASTM A453 GRADE 660B Belleville Washer

A286 UNS S66286 Shim Washer

A286 UNS S66286 Shim Washer

ASTM A638 grade 660 Type 1 Square Plate Washer

ASTM A638 grade 660 Type 1 Square Plate Washer

A453 Gr 660 Square Washer

A453 Gr 660 Square Washer

ASTM A638 Gr 660 Type 2 Penny Washer

ASTM A638 Gr 660 Type 2 Penny Washer

Grade 660 Machine Washers

Grade 660 Machine Washers

Polished ASTM A891 TYPE 2 Washer

Polished ASTM A891 TYPE 2 Washer

A453 660B Ring Washers

A453 660B Ring Washers

ASTM A638 grade 660 Type 1 Hex Bolt Dimensions Metric
ASTM A638 grade 660 Type 1 Hex Bolt Dimensions Metric

Hexagon Head Bolt BSF BS1083

d e s max s min k max k min f Max f Min g Max g Min
1/4" 0.5100 0.4450 0.4380 0.1760 0.1660 0.2500 0.2470 0.4280 0.4180
5/16" 0.6100 0.5250 0.5180 0.2180 0.2080 0.3130 0.3090 0.5080 0.4980
3/8" 0.6900 0.6000 0.5920 0.2600 0.2500 0.3750 0.3720 0.5820 0.5720
7/16" 0.8200 0.7100 0.7020 0.3020 0.2920 0.4380 0.4340 0.6900 0.6800
1/2" 0.9500 0.8200 0.8120 0.3430 0.3330 0.5000 0.4960 0.8000 0.7900
9/16" 1.0600 0.9200 0.9120 0.3750 0.3650 0.5630 0.5590 0.9000 0.8900
5/8" 1.1700 1.0100 1.0000 0.4170 0.4070 0.6250 0.6190 0.9850 0.9750
3/4" 1.3900 1.2000 1.1900 0.5000 0.4800 0.7500 0.7440 1.1750 1.1650
7/8" 1.5000 1.3000 1.2880 0.5830 0.5630 0.8750 0.8670 1.2730 1.2630
1" 1.7100 1.4800 1.4680 0.6660 0.6360 1.0000 0.9920 1.4530 1.4330
1.1/8" 1.9300 1.6700 1.6400 0.7500 0.7100 1.1250 1.1170 1.6200 1.6100
1.1/4" 2.1500 1.8600 1.8150 0.8300 0.7900 1.2500 1.2420 1.7950 1.7850
1.3/8" 2.3700 2.0500 2.0050 0.9200 0.8800 1.3750 1.3650 1.9850 1.9750
1.1/2" 2.5600 2.2200 2.1750 1.0000 0.9600 1.5000 1.4900 2.1550 2.1450
1.3/4" 2.9800 2.5800 2.5200 1.1700 1.1100 1.7500 1.7400 2.4950 2.4850
2" 3.1900 2.7600 2.7000 1.3300 1.2700 2.0000 1.9900 2.6750 2.6650
A453 Gr 660 Stud Bolt Metric Dimensions
A453 Gr 660 Stud Bolt Metric Dimensions

Stud Metal End =1.1/2 D 4H Metric Coarse BS 4439

d b c l<125 c l<125<200 c l 200>
M3 5.0000 12.0000 18.0000  
M4 6.0000 14.0000 20.0000  
M5 8.0000 16.0000 22.0000  
M6 9.0000 18.0000 24.0000 37.0000
M7 11.0000 20.0000 26.0000 39.0000
M8 12.0000 22.0000 28.0000 41.0000
M10 15.0000 26.0000 32.0000 45.0000
M12 18.0000 30.0000 36.0000 49.0000
M14 21.0000 34.0000 40.0000 53.0000
M16 24.0000 38.0000 44.0000 57.0000
M18 27.0000 42.0000 48.0000 61.0000
M20 30.0000 46.0000 52.0000 65.0000
M22 33.0000 50.0000 56.0000 69.0000
M24 36.0000 54.0000 60.0000 73.0000
M27 41.0000 60.0000 66.0000 79.0000
M30 45.0000 66.0000 72.0000 85.0000
M33 50.0000 72.0000 78.0000 91.0000
M36 54.0000 78.0000 84.0000 97.0000
ASTM A638 Gr 660 Type 2 Hex Nut Dimensions Metric

ASTM A638 Gr 660 Type 2 Hex Nut Dimensions Metric

Hexagon Heavy Nut UNC B18.2.2

D D s s max s min e max e min m m max m min
1/4" 0.2500 1/2" 0.5000 0.4880 0.5770 0.5560 15/64" 0.2500 0.2180
5/16" 0.3125 9/16" 0.5620 0.5460 0.6500 0.6220 19/64" 0.3140 0.2800
3/8" 0.3750 11/16" 0.6880 0.6690 0.7940 0.7630 23/64" 0.3770 0.3410
7/16" 0.4375 3/4" 0.7500 0.7280 0.8660 0.8300 27/64" 0.4410 0.4030
1/2" 0.5000 7/8" 0.8750 0.8500 1.0100 0.9690 31/64" 0.5040 0.4640
9/16" 0.5625 15/16" 0.9380 0.9090 1.0830 1.0370 35/64" 0.5680 0.5260
5/8" 0.6250 1.1/16" 1.0620 1.0310 1.2270 1.1750 39/64" 0.6310 0.5870
3/4" 0.7500 1.1/4" 1.2500 1.2120 1.4430 1.3820 47/64" 0.7580 0.7100
7/8" 0.8750 1.7/16" 1.4380 1.3940 1.6600 1.5890 55/64" 0.8850 0.8330
1" 1.0000 1.5/8" 1.6250 1.5750 1.8760 1.7960 63/64" 1.0120 0.9560
1.1/8" 1.1250 1.13/16" 1.8120 1.7560 2.0930 2.0020 1.7/64" 1.1390 1.0790
1.1/4" 1.2500 2" 2.0000 1.9380 2.3090 2.2090 1.7/32" 1.2510 1.1870
1.3/8" 1.3750 2.3/16" 2.1880 2.1190 2.5260 2.4160 1.11/32" 1.3780 1.3100
1.1/2" 1.5000 2.3/8" 2.3750 2.3000 2.7420 2.6220 1.15/32" 1.5050 1.4330
1.5/8" 1.6250 2.9/16" 2.5620 2.4810 2.9590 2.8280 1.19/32" 1.6320 1.5560
1.3/4" 1.7500 2.3/4" 2.7500 2.6620 3.1750 3.0350 1.23/32" 1.7590 1.6790
1.7/8" 1.8750 2.15/16" 2.9380 2.8440 3.3920 3.2420 1.27/32" 1.8860 1.8020
2" 2.0000 3.1/8" 3.1250 3.0250 3.6080 3.4490 1.31/32" 2.0130 1.9250
2.1/4" 2.2500 3.1/2" 3.5000 3.3880 4.0410 3.8620 2.13/64" 2.2510 2.1550
2.1/2" 2.5000 3.7/8" 3.8750 3.7500 4.4740 4.2750 2.29/64" 2.5050 2.4010
2.3/4" 2.7500 4.1/4" 4.2500 4.1120 4.9070 4.6880 2.45/64" 2.7590 2.6470
3" 3.0000 4.5/8" 4.6250 4.4750 5.3400 5.1020 2.61/64" 3.0130 2.8930
3.1/4" 3.2500 5" 5.0000 4.8380 5.7740 5.5150 3.3/16" 3.2520 3.1240
3.1/5" 3.5000 5.3/8" 5.3750 5.2000 6.2070 5.9280 3.7/16" 3.5060 3.3700
3.3/4" 3.7500 5.3/4" 5.7500 5.5620 6.6400 6.3410 3.11/16" 3.7600 3.6160
4" 4.0000 6.1/8" 6.1250 5.9250 7.0730 6.7550 3.15/16" 4.0140 3.8620
Grade 660 Washer Dimensions

Grade 660 Washer Dimensions

Flat Washer Metric DIN 125A  125

D d1 d2 h
M1 1.1000 3.0000 0.3000
M1.2 1.3000 3.5000 0.3000
M1.4 1.5000 4.0000 0.3000
M1.6 1.7000 4.0000 0.3000
M1.7 1.8000 4.5000 0.3000
M2 2.2000 5.0000 0.3000
M2.3 2.5000 6.0000 0.5000
M2.5 2.7000 6.0000 0.5000
M2.6 2.8000 7.0000 0.5000
M3 3.2000 7.0000 0.5000
M3.5 3.7000 8.0000 0.5000
M4 4.3000 9.0000 0.8000
M5 5.3000 10.0000 1.0000
M6 6.4000 12.0000 1.6000
M7 7.4000 14.0000 1.6000
M8 8.4000 16.0000 1.6000
M10 10.5000 20.0000 2.0000
M12 13.0000 24.0000 2.5000
M14 15.0000 28.0000 2.5000
M16 17.0000 30.0000 3.0000
M18 19.0000 34.0000 3.0000
M20 21.0000 37.0000 3.0000
M22 23.0000 39.0000 3.0000
M24 25.0000 44.0000 4.0000
M27 28.0000 50.0000 4.0000
M30 31.0000 56.0000 4.0000
M33 34.0000 60.0000 5.0000
M36 37.0000 6.0000 5.0000
M39 40.0000 72.0000 6.0000
M42 43.0000 78.0000 7.0000
M45 46.0000 85.0000 7.0000
M48 50.0000 92.0000 8.0000
M52 54.0000 98.0000 8.0000
M55 57.0000 105.0000 9.0000
M56 58.0000 105.0000 9.0000
M58 60.0000 110.0000 9.0000
M60 62.0000 110.0000 9.0000
M64 66.0000 115.0000 9.0000
M68 70.0000 120.0000 10.0000
M72 74.0000 125.0000 10.0000
M76 78.0000 135.0000 10.0000
M80 82.0000 140.0000 12.0000
M85 87.0000 145.0000 12.0000
M90 93.0000 160.0000 12.0000
M95 98.0000 165.0000 12.0000
M100 104.0000 175.0000 14.0000
M105 109.0000 180.0000 14.0000
M110 114.0000 185.0000 14.0000
M115 119.0000 200.0000 14.0000
M120 124.0000 210.0000 16.0000
M125 129.0000 220.0000 16.0000
M130 134.0000 230.0000 16.0000
M135 139.0000 230.0000 16.0000
M140 144.0000 240.0000 18.0000
M145 149.0000 250.0000 18.0000
M150 155.0000 250.0000 18.0000
M160 165.0000 250.0000 18.0000
ASTM A891 TYPE 2 Fasteners Chemical Composition
ELEMENT Grade 660 Grade 651 Grade 662 Grade 665 Grade 668
% % % % %
Carbon 0.08 max 0.28-0.35 0.08 max 0.08 max 0.08 max
Manganese 2.00 max 0.75-1.5 0.40-1.00 1.25-2.00 2.00 max
Phosphorus, max 0.040 max 0.040 max 0.040 max 0.040 max 0.040 max
Chromium 13.5-16.0 18.0-21.0 12.0-15.0 12.0-15.0 13.5-16.0
Molybdenum 1.00-1.50 1.00-1.75 2.0-3.50 1.25-2.25 1.50 max
Tungsten 1.00-1.75
Sulfur, max 0.030 max 0.030 max 0.030 max 0.030 max 0.030 max
Silicon 1.00 max 0.30-0.80 0.40-1.00 0.1-0.80 1.00 max
Nickel 24.0-27.0 8.0-11.0 24.0-28.0 24.0-28.0 17.5-21.5
Titanium 1.9-2.35 0.1-0.35 1.80-2.10 2.70-3.30 2.20-2.80
Columbium * 0.25-0.6
Aluminum 0.35 max 0.35 max 0.25 max 0.50 max
Vanadium 0.10-0.50 0.50 max
Boron 0.001-0.010 0.001-0.010 0.01-0.07 0.001-0.010
Copper 0.50 max 0.50 max 0.25 max
A453 660B Bolts Mechanical Properties
Grade Class Tensile Stress, min Yield Strength, min Elongation %
ksi Mpa ksi Mpa
660 A, B, and C 130 895 85 585 15
D 130 895 105 725 15
651 A 100 690 70 A 485 18
60B 415
B 95 655 60A 415 18
50B 345
662 A 130 895 85 585 15
B 125 860 80 550 15
665 A 170 1170 120 830 12
B 155 1070 120 830 12
668 A and B 130 895 85 585 15
ASTM A453 Grade 660 Class A Nut Bolt Equivalent Grade
Grade UNS BS Wr No. En Name DIN EN JIS AMS ASTM other names Additional Requirements
660 S 66286 HR 51
HR 650
1.4944
1.4980
X6NiCrTiMoV26-15  10269 / 2399 SUS 660 5726 ASTM A453 GRADE 660A Incoloy A286 NACE MR-0175

Werkstoff Numbers
  • EN 1.4944
  • EN 1.4943
  • EN 1.4980
European Name
  • X5NiCrTi26-15
  • X4NiCrTi25-15
  • X6NiCrTiMoVB25-15-2
ASTM
  • ASTM A891 (Type 1, 2)
  • ASTM A638 (Grade 660 Type 1, 2)
  • ASTM A453 (Grade 660 Class A, B, C, D)
ASME
  • ASME SA 891 (Type 1, 2)
  • ASME SA 638 (Grade 660 Type 1, 2)
  • ASME SA 453 (Grade 660 Class A, B, C, D)
GE
  • GE B50T1181C
  • GE B50T12A&C
  • GE B50T81A&C
  • GE C50TF78
  • GE C50TF27
  • GE C50TF20
AMS
  • A286 AMS 5726
  • A286 AMS 5731
  • A286 AMS 5732
  • A286 AMS 5734
  • A286 AMS 5735
  • A286 AMS 5736
  • A286 AMS 5737
  • A286 AMS 5853
  • A286 AMS 5895
Other Compliance
  • UNS S66286
  • SAE J467-A286
  • EN 2399
  • PWA-LCS
  • GE-S400/1000
  • RR SABRe Edition 2
  • DFARS Compliant
  • SPS M-118
  • Fairchild MS 301
  • 314 Elliott Turbine MS 618 Weatherford WS-881
  • Cameron MS-003030
A453 Gr 660 Stainless Steel Bolts Melting Range
  • 2500 - 2600 °F
  • 1371 - 1427 °C

Stree Rupture

Bolts Grade Class Property Test Temperature Stress, Min Time to Rupture Elongation
Deg F [ Deg C ] Ksi Mpa Min, h* Min %
660 A, B & C 1200 [650] 56 385 100 5
651 A & B 1200 [650] 40 275 100 5
662 A & B 1200 [650] 55 380 100 5
665 A 1200 [650] 75 515 100 3
B 1200 [650] 70 485 100 5

Heat Treatment

Grade Class Property Solutiona Treatment Hardening Treatment
Gr. 660 A 1650 +/- 25 °F [900 +/-14 °C], hold 2 h, min and liquid quench 1325 +/- 25 °F [720 +/- 14 °C] 16h, air cool
B 1800 +/- 25 °F [980 +/-14 °C], hold 1 h, min and liquid quench 1325 +/- 25 °F [720 +/- 14 °C] 16h, air cool
C 1800 +/- 25 °F [980 +/-14 °C], hold 1 h, min and oil quench 1425 +/- 25 °F [775 +/- 14 °C] hold 16h, air cool followed by 1200 +/- 25 °F [650 +/- 14 °C], hold 16h, air cool
D 1650 +/- 25 °F [900 +/-14 °C], hold 2 h, min and liquid quench OR 1325 +/- 25 °F [720 +/- 14 °C] hold 16h, air cool followed by 1200 +/- 25 °F [650 +/- 14 °C], hold 16h, air cool 
if neccessary to achieve properties, second age : 1200 +/- 25 °F [650 +/- 14 °C] hold 16h, air cool
  1800 +/- 25 °F [980 +/-14 °C], hold 1 h, min and liquid quench