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ASTM A453 Grade 660 Bolts

SA 453 Gr660 Hex Bolt and Threaded Rod manufacturer in Mumbai, India

The ASTM A453 Grade 660 is a specification for high temperature service bolts and nuts. Great Steel & Metals is a manufacturer and supplier of high temperature service bolts and nuts. TheASTM A453 Grade 660 Stud Bolts come in four different classes. There are class A, B, C and D of these products, each corresponding to different application requirements.


ASTM A453 Grade 660 Bolts

ASTM A453 Grade 660 Bolts

SA 453 Gr660 Hex Bolt

SA 453 Gr660 Hex Bolt

ASTM A453 Grade 660 Nuts

ASTM A453 Grade 660 Nuts


Check updated price list of Grade 660 Threaded Rod and ASTM A453 660 Bolts/ Nuts/ Screw ex Mumbai with Material Test Certificate

All the ASTM A453 Grade 660 Nuts are solid solution treated and could be hardened. These are used in high temperature applications such as boilers, heat exchangers and in engine parts. We produce ASTM A453 Gr 660 Bolts in different shapes, sizes and lengths for use in different applications. Our ASME SA 453 Grade 660 Hex Bolt is used in stronger and heavier applications. The material is closer to austenitic steel types in comparison to the expansion coefficient. The classes are differentiated by the temperatures at which they are solid solution annealed and at which temperatures they could be hardened. The ASTM A453 Grade 660 Class A Washer is solid solution annealed at 900 degrees Celsius and is hardened at 720 degrees Celsius. The other classes are treated at different temperatures. Class B and C are solution treated at 980 degrees Celsius. Classes A, B and D are hardened at 720 degrees where Class C is hardened at 775 degrees Celsius. Our ASME Sa 453 Grade 660 Studs are of high quality and pass all the necessary tests. Please contact us for further information and price list before placing an order.

Table of contents

Stud Bolt A453 Gr 660 Specifications

UNS S66286 A453 Gr 660 Nuts and ASME SA 453 660B Heavy Hex Bolts material exporter and supplier in Mumbai, View ASTM A453 GRADE 660 Stud Bolt Size Chart

ASTM A453 Grade 660 Fasteners Material Specification ASTM A453 Grade 660 Nuts, UNS S66286 Bolts
A453 Gr 660 Fasteners / Bolts Standard DIN, UNI, ISO, JIS, GB, IS, BS, ASME, ANSI, ASTM and all International Standards
A453 660 Fasteners/ Bolts Size M2, M2.5, M3, M4, M5, M6, M8, M10, M12, M14, M16, M20, M24, M30, M36 to M160
Length of A453 Gr 660 Bolts 3 mm to 200 mm
ASTM A453 Grade 660b Bolts, Studs Threads: METRIC, BSW, BSF, UNC, UNF or as required
A453 Gr 660 Nut Standard: ANSI – American National Standards Institute

  • ANSI B 18.2.4 2M
  • ANSI B 28.2.4 1M
  • ASTM A453 Grade 660 Stud Bolt length are defined in ASME B16.5 standard
  • A453 Gr 660 Hex nuts are defined in ASME B18.2.2
  • ASME B18.5

DIN: 931, 933, 934, 970

UTS – Unified Thread Standard : UNC, UNF, UNEF, UNS, NPT, NPTF

ISO – International Organization for Standardization : ISO 4032, ISO 4033, JIS standards
Source of raw materials to manufacture A453 Gr 660 Class A/B/C/D Stud Bolts Tata Steel, JSPL, RINL, Usha Martin, Dhamm Steel, Mukund Steel etc.
SCOPE
  • Manufacturer of Hot Forged A453 Gr 660 Cl D Stud Bolt, Nut / Bolt; up to M36 / 1-1/2” Dia, up to 1100mm lg
  • Manufacturer of CNC Machined ASTM A453 Grade 660 Bolts, Nut / Bolt; up to M100 / 4” Dia, up to 1500mm lg
ASTM A453 Grade 660 Fastener In Form of: Hex, Square, Round, Threading as per Gauge Etc.
Head drive: Phillips, Slotted, Phillips/Slot, Six-Lobe, etc
ASTM A453 Grade 660 Hex Bolt Thread Metric Coarse
A453 Gr 660 bolting Test Certificate: Manufacturer Test Certificate as per EN 10204 / 3.1
ASTM A453 Grade 660 Bolts finishing: Zinc (yellow, white, blue, black), black oxide,
Geometry, Dacroment, anodizing, nickel plated, plated zinc-nickel, Stainless steel: Passivated
Self-Colour, Hot Dip Galvanised (HDG), Bright Zinc Plated (BZP), Sherardized, Mechanically Applied coating and some special one like DACROMET
Production process M2-M24: Cold Froging, hot forging M24-M100, machining and CNC for Customized connecting element
ASTM A453 Gr 660 Stainless Steel bolting materials Surface Coating:
  • Teflon Coated ASTM A453 Grade 660 Bolts
  • Phosphate Coated ASTM A453 Grade 660 Fasteners
  • Zinc Coated A453 Gr 660 Fasteners
  • Ptfe Coated A453 660 Fasteners
  • Xylon Coated ASME SA 453 Gr 660 Fasteners
  • Cadmium Coated ASTM A453 Grade 660b Fasteners
  • Hot Dipped Galvanizing Coated A453 Grade 660 Class C Fasteners

Manufacturer of all surface finishes in ASTM A453 Gr 660 Stainless Steel Bolt including Zinc, Galvanised, Sherardized, Electroless Nickel, Dacromet, Geomet & PTFE.
A453 Gr 660 Cl D Bolts types ASTM A453 Grade 660 Hex Bolts, Flange Bolts, Hex Head Bolts, Lag Bolts, Square Bolts, Eye Bolts, U Bolts, T Bolts, Counter sunk Bolts etc.
ASTM A453 Gr. 660 Nut types ASTM A453 Grade 660 Hex Head Nut, Eye Nut, Dome Nut, Wing Nut, T Nut, Panel Nut, Lock Nut, Coupling Nut, Square Nut, Acorn Nut etc.
ASTM A453 Grade 660 Screws types ASTM A453 Grade 660 Hex Head Cap Screws, Socket Set Screws, Anchor Screws, Blind Rivet, Socket Head Screws, Concrete Screws, Shoulder Screws, Panel Screws, Threaded Screws, Machine Screws etc.
A453 Gr 660 Washer types ASTM A453 Grade 660 Machine Washers, Flat Washer, Star Washers, Sealing Washer, Lock Washer, Split Washer in India
A286 Gr 660 Fasteners Packing: IN BULK: canton, pallet, Small Boxs / carton / pallet, or customer request
Ready stock available metric ASTM A453 Grade 660 Bolts
  • ASTM A453 Grade 660 Bolts M16 x 65mm DIN933
  • A453 Gr 660 Bolts M16 x 45mm DIN933
  • A453 660 Hex Nut M16
  • ASME SA 453 Gr 660 Washer M16
  • ASTM A453 Grade 660b Bolts M16 X 60mm
  • A453 Grade 660 Class C Bolts M16 X 55mm
  • ASTM A453 Gr 660 Stainless Steel Bolts M16 X 35mm
  • A453 Gr 660 Cl D Bolts M12 X 90mm
  • ASTM A453 Gr. 660 Bolts M12 X 70mm
  • A453 Gr. 660 A Bolts M20 x 70mm
  • ASTM A453 Gr 660 Cl.A Bolts M20 x 75mm

Different A453 660 Nut Types

A453 Gr 660 Bolts and Set Screws

ASTM A453 Grade 660 Hex Bolts

ASTM A453 Grade 660 Hex Bolts

A453 Gr 660 Hex Set Screws

A453 Gr 660 Hex Set Screws

A453 660 Carriage Bolts

A453 660 Carriage Bolts

ASME SA 453 Gr 660 Roofing Bolts

ASME SA 453 Gr 660 Roofing Bolts

A453 660 Socket Head Screws

A453 Gr 660 Socket Head Cap Screws

A453 Gr 660 Socket Head Cap Screws

ASTM A453 Grade 660 Low Head Socket Head Cap Screws

ASTM A453 Grade 660 Low Head Socket Head Cap Screws

A453 660 Button Head Sockets

A453 660 Button Head Sockets

ASME SA 453 Gr 660 Countersunk Sockets

ASME SA 453 Gr 660 Countersunk Sockets

ASTM A453 Grade 660b Socket Set Screws

ASTM A453 Grade 660b Socket Set Screws

A453 Grade 660 Class C Socket Shoulder Screws

A453 Grade 660 Class C Socket Shoulder Screws

ASTM A453 Gr 660 Stainless Steel Metric Socket Head Cap Screws

ASTM A453 Gr 660 Stainless Steel Metric Socket Head Cap Screws

A453 Gr 660 Cl D UNC Socket Head Cap Screws

A453 Gr 660 Cl D UNC Socket Head Cap Screws

ASME SA 453 Gr 660 Nuts

ASTM A453 Grade 660 T Nuts

ASTM A453 Grade 660 T Nuts

A453 Gr 660 Wing Nuts

A453 Gr 660 Wing Nuts

A453 660 Lock Nuts

A453 660 Lock Nuts

ASME SA 453 Gr 660 Dome Nuts (Acorn)

ASME SA 453 Gr 660 Dome Nuts (Acorn)

ASTM A453 Grade 660b Hex Nuts

ASTM A453 Grade 660b Hex Nuts

A453 Grade 660 Class C Lug Nuts

A453 Grade 660 Class C Lug Nuts

ASTM A453 Gr 660 Stainless Steel Square Nuts

ASTM A453 Gr 660 Stainless Steel Square Nuts

A453 Gr 660 Cl D Flange Nuts

A453 Gr 660 Cl D Flange Nuts

ASTM A453 Grade 660b Washers

ASME SA 453 Gr 660 Flat Washers

ASME SA 453 Gr 660 Flat Washers

ASTM A453 Grade 660 Penny Washers

ASTM A453 Grade 660 Penny Washers

A453 Gr 660 Spring Washers

A453 Gr 660 Spring Washers

A453 Grade 660 Class C Toothed/ Serrated Lock Washers

A453 Grade 660 Class C Toothed/ Serrated Lock Washers

A453 Grade 660 Class C Threaded Rod

ASTM A453 Grade 660b Metric Threaded Rod

ASTM A453 Grade 660b Metric Threaded Rod

A453 Gr 660 Cl D UNC Threaded Rod

A453 Gr 660 Cl D UNC Threaded Rod

A453 Gr 660 UNF Threaded Rod

A453 Gr 660 UNF Threaded Rod

ASTM A453 Grade 660 BSW / BSF Threaded Rod

ASTM A453 Grade 660 BSW / BSF Threaded Rod

ASTM A453 Gr 660 Stainless Steel Machine Screws

ASTM A453 Grade 660 Pan Head Pozi

ASTM A453 Grade 660 Pan Head Pozi

A453 Grade 660 Class C Pan Head Phillips

A453 Grade 660 Class C Pan Head Phillips

ASTM A453 Gr. 660 Pan Head Slotted

ASTM A453 Gr. 660 Pan Head Slotted

A453 Gr. 660 A Pan Head Torx

A453 Gr. 660 A Pan Head Torx

A453 Gr 660 Cl D Self Tapping Screws

A453 Grade 660 Class C Pan Head Pozi Self Tapping Screws

A453 Grade 660 Class C Pan Head Pozi Self Tapping Screws

ASTM A453 Grade 660 Pan Head Slot Self Tapping Screws

ASTM A453 Grade 660 Pan Head Slot Self Tapping Screws

A453 Gr 660 Countersunk Head Pozi Self Tapping Screws

A453 Gr 660 Countersunk Head Pozi Self Tapping Screws

ASME SA 453 Gr 660 Countersunk Head Slotted Self Tapping Screws

ASME SA 453 Gr 660 Countersunk Head Slotted Self Tapping Screws

ASTM A453 Gr. 660 Self Drilling Screws

ASTM A453 Grade 660 Z Purlin

ASTM A453 Grade 660 Z Purlin

ASME SA 453 Gr 660 Stitcher

ASME SA 453 Gr 660 Stitcher

A453 Gr 660 Hot Rolled Rail

A453 Gr 660 Hot Rolled Rail

A453 660 Timber Fixing

A453 660 Timber Fixing

A453 Gr. 660 A Coach Screws, Hex Head

ASTM A453 Grade 660 Coach Screw

ASTM A453 Grade 660 Coach Screw

ASME SA 453 Gr 660 Hex Head Coach Screw

ASME SA 453 Gr 660 Hex Head Coach Screw

A453 Gr 660 DIN 571 Coach Screw

A453 Gr 660 DIN 571 Coach Screw

ASTM A453 Grade 660b M10 Coach Screw

ASTM A453 Grade 660b M10 Coach Screw

ASTM A453 Gr 660 Cl.A Security Fasteners

A453 Gr 660 2-Hole

A453 Gr 660 2-Hole

ASTM A453 Grade 660 6-Lobe Pin

ASTM A453 Grade 660 6-Lobe Pin

A453 660 Barrel Nut

A453 660 Barrel Nut

ASTM A453 Grade 660b Self Drilling Screw

ASTM A453 Grade 660b Self Drilling Screw

ASTM A453-660 Petrochemical Studding & Nuts

ASTM A453 Grade 660 Studs

ASTM A453 Grade 660 Studs

A453 Gr 660 Imperial Studs

A453 Gr 660 Imperial Studs

A453 660 Metric Studs

A453 660 Metric Studs

ASME SA 453 Gr 660 Heavy Hex Nuts

ASME SA 453 Gr 660 Heavy Hex Nuts

A286 Gr 660 U Bolts

ASTM A453 Grade 660 U Bolt c/w 2 Nuts

ASTM A453 Grade 660 U Bolt c/w 2 Nuts

Long Leg A453 660 U Bolt c/w 4 Nuts

Long Leg A453 660 U Bolt c/w 4 Nuts

ASME SA 453 Gr 660 U Bolt with Plate

ASME SA 453 Gr 660 U Bolt with Plate

Clamping U A453 Gr 660 Bolts

Clamping U A453 Gr 660 Bolts

ASTM A453/A453m Grade 660 (A286) Anchor Bolt

ASTM A453 Grade 660 Wedge Anchor Bolts

ASTM A453 Grade 660 Wedge Anchor Bolts

A453 Gr 660 Expansion Anchor Bolt

A453 Gr 660 Expansion Anchor Bolt

A453 660 Sleeve Anchor Bolt

A453 660 Sleeve Anchor Bolt

ASME SA 453 Gr 660 Concrete Anchor Bolt

ASME SA 453 Gr 660 Concrete Anchor Bolt

A453 Grade 660 Rivets

ASTM A453 Grade 660 POP Rivets (Open End)

ASTM A453 Grade 660 POP Rivets (Open End)

A453 Gr 660 Closed End POP Rivets (Sealed)

A453 Gr 660 Closed End POP Rivets (Sealed)

A453 660 Large Flange POP Rivets

A453 660 Large Flange POP Rivets

ASME SA 453 Gr 660 Countersunk POP Rivets

ASME SA 453 Gr 660 Countersunk POP Rivets

A453 Gr 660 Inserts

ASTM A453 Grade 660 Unthreaded Rod

ASTM A453 Grade 660 Unthreaded Rod

A453 660 E-Z Lok Threaded Inserts

A453 660 E-Z Lok Threaded Inserts

ASME SA 453 Gr 660 Dowel Pins

ASME SA 453 Gr 660 Dowel Pins


ASTM A453 Grade 660 Hex Bolt Dimension

Looking to buy ASME SA453 660 Stainless Steel Bolts and Nuts at factory price? Buy direct from the manufacturer of A453 Gr 660 Class A/B/C/D Fasteners in India
ASTM A453 Grade 660 Hex Bolt Dimension

NOMINAL SIZE (D)
BODY DIAMETER
HEAD THICKNEASTM A193
ACROASTM A193 THE FLATS
ACROASTM A193 CORNERS
D (MAX)
D (MIN)
H (MAX)
H (MIN)
F (MAX)
F (MIN)
C (MAX)
C (MIN)
m10
10.00
9.78
6.63
6.17
17.00
15.73
18.48
17.77
m12
12.00
11.73
7.76
4.24
19.00
17.73
20.78
20.03
m14
14.00
13.73
9.09
8.51
22.00
20.67
24.25
23.35
m16
16.00
15.73
10.32
9.68
24.00
23.67
27.71
26.75
m20
20.00
19.67
12.88
12.12
30.00
29.16
34.64
32.95
m24
24.00
23.67
15.44
14.56
36.00
35.00
41.57
39.55
m30
30.00
29.67
19.48
17.92
46.00
45.00
53.12
50.85
m36
36.00
35.61
23.38
21.63
55.00
53.80
63.51
60.79
m42
42.00
41.38
26.97
25.03
65.00
62.90
75.06
71.71
m48
48.00
47.38
31.07
28.93
75.00
72.60
86.60
82.76
m56
56.00
55.26
36.2
33.80
85.00
82.20
98.15
93.71
m64
64.00
63.26
41.32
38.68
95.00
91.80
109.70
104.65
m72
72.00
71.26
46.45
43.55
105.00
101.40
121.24
115.60
m80
80.00
79.26
51.58
48.42
115.00
111.00
132.72
126.54
m90
90.00
89.13
57.74
54.26
130.00
125.50
150.11
143.07
m100
90.00
99.13
63.9
60.10
145.00

A453 Gr 660 Heavy Hex Bolt Dimension

A453 Gr 660 Heavy Hex Bolt Dimension
Diameter (D)
Body Diameter (D)
Across the Flats (F)
Across the Corners ©
Head Height (H)
Thread Lengths (T)
MAX
MIN
MAX
MIN
MAX
MIN
MAX
MIN
< 6”
> 6”
1/2
0.515
0.482
0.875
0.85
1.01
0.969
0.364
0.302
1.25
1.5
5/8
0.642
0.605
1.062
1.031
1.227
1.175
0.444
0.378
1.5
1.75
3/4
0.768
0.729
1.25
1.212
1.443
1.383
0.524
0.455
1.75
2
7/8
0.895
0.852
1.438
1.394
1.66
1.589
0.604
0.531
2
2.25
1
1.022
0.976
1.625
1.575
1.876
1.796
0.7
0.591
2.25
2.5
1 1/8
1.149
1.098
1.812
1.756
2.093
2.002
0.78
0.658
2.5
2.75
1 1/4
1.277
1.223
2
1.938
2.309
2.209
0.876
0.749
2.75
3
1 3/8
1.404
1.345
2.188
2.119
2.526
2.416
0.94
0.81
3
3.25
1 1/2
1.531
1.47
2.375
2.3
2.742
2.622
1.036
0.902
3.25
3.5
1 3/4
1.785
1.716
2.75
2.662
3.175
3.035
1.196
1.054
3.75
4
2
2.039
1.964
3.125
3.025
3.608
3.449
1.388
1.175
4.25
4.5
2 1/4
2.305
2.214
3.5
3.388
4.041
3.862
1.548
1.327
4.75
5
2 1/2
2.559
2.461
3.875
3.75
4.474
4.275
1.708
1.479
5.25
5.5
2 3/4
2.827
2.711
4.25
4.112
4.907
4.688
1.869
1.632
5.75
6
3
3.081
2.961
4.625
4.475
5.34
5.102
2.06
1.815
6.25
6.5

Size Table of A453 Screw

ASTM A453 Grade 660 Screws Types SIZE GRADE ASME ISO ASTM
A453 Gr 660 Socket Head Cap Screws M1.6 to M64 12.9 B18.3.1 M 4762 A574M
ASTM A453 Grade 660b Countersunk Socket Head Screws M3 to M20 012.9 B18.3.5M 10642 F835M
A453 Grade 660 Class C Button Head Socket Screws M3 to M12 012.9 B18.3.4M 7380 F835M
ASTM A453 Gr 660 Stainless Steel Flange Button Head Socket Screws M3 to M10 012.9 F835M
ASTM A453 Gr. 660 Knurled Point Socket Set Screws M3 to M20 45H B18.3.6M 4029 F912M
A453 Gr. 660 A Flat Point Socket Set Screws M6 to M12 45H B18.3.6M 4026 F912M
A453 660 Socket Low Head Cap Screws M4 to M20 10.9
ASME SA 453 Gr 660 Socket Head Shoulder Screws M6 to M24 012.9 B18.3.3M
A453 Gr 660 Cl D Dog Point Socket Set Screws M3 to M20 45H B18.3.6M 4028 F912M
ASTM A453 Gr 660 Cl.A Cone Point Socket Set Screws M3 to M12 45H B18.3.6M 4027 F912M
ASTM A453-660 Plain Point Socket Set Screws M3 to M20 45H B18.3.6M 4029 F912M
A286 Gr 660 Taper Pressure Plug M8 to M22 –

ASTM A453 Grade 660 Nuts Type SIZE PROPERTY CLASS STANDARD
ASME SA 453 Gr 660 Nylock Nut M6 to M20 (Gr.8)
M10 to M24 (Gr.10)		 8 & 10 DIN 985
ASTM A453 Grade 660b Hex Weld Nut M6 to M12 8 DIN 929
A453 Gr 660 Hex Nut M6 to M42 10 ISO 4032
A453 660 Nylock Nut M6 to M20 (Gr.8)
M10 to M24 (Gr.10)		 8 & `10 DIN 982

ASTM A453 Grade 660 Washers Type SIZE (in mm) HARDNESS STANDARD
ASTM A453 Grade 660b Hardened Washer 12 to 56 Rockwell 26 to 45 (HDG)
Rockwell 38 to 45 (Coated)		 ASTM F436M
Square Section A453 Gr 660 Spring Washer 3 to 39 HV (430 to 530) DIN 7980
Flat Section A453 660 Spring Washer 3 to 39 HV (430 to 530) DIN 127 B
ASME SA 453 Gr 660 Hardened Washer 12 to 30 HV (300 to 370) IS 2016

ASTM A453-660 Bolt Type SIZE PROPERTY CLASS TENSILE STRENGTH STANDARD
ASTM A453 Grade 660 Hex Head Bolt / Screws M4 to M80 10.9 1040N / mm2 min ISO 4017 (Full Thread)
ISO 4014 (Half Thread)

Below table compares various A453 660 Fasteners metric sizes to the closest inch equivalent

Metric ASTM A453 Grade 660 Bolts Closest Inch
M1.4-0.3 Bolts 0-80 (L)
M2-0.4 Bolts 1-64 (S)
M2.5-0.45 Bolts 3-56 (L)
M3-0.5 Bolts 4-48 (S)
M3.5-0.6 Bolts 6-40 (Same)
M4-0.7 Bolts 8-36 (L)
M5-0.8 Bolts 10-32 (S)
M6-1.0 Bolts 1/4-28 (L)
M7-1.0 Bolts 1/4-28 (S)
M8-1.25 Bolts 5/16-18 (S)
M10-1.5 Bolts 3/8-16 (S)
M12-1.75 Bolts 1/2-13 (L)
M14-2.0 Bolts 9/16-12 (L)
M16-2.0 Bolts 5/8-11 (S)
M18-2.5 Bolts 3/4-10 (L)
M20-2.5 Bolts 3/4-10 (S)
M22-2.5 Bolts 7/8-9 (L)
M24-3.0 Bolts 1-8 (L)
M30-3.5 Bolts 1 1/8-7 (S)
M36-4.0 Bolts 1 3/8-6 (S)

*L = Larger
*S=Smaller


ASTM A453 Grade 660 Bolts Properties

Wide range of ASTM A453 Grade 660 Class A Socket Head Cap Screws & ASME SA453 Gr 660 Bolts in India, Buy UNS S66286 Threaded Rod at best price ex Mumbai
Grade
Class
Tensile Strength
Yield Strength

Elongation

in 4D, min, %

Reduction

of Area, min, %

Brinell

Hardness

Number

Approximate

Rockwell

Hardness, B & C
Ksi
Mpa
Ksi
Mpa
min
max
Grade 660
A, B and C
130
895
85
585
15
18
248-341
24 HRC
37 HRC
Grade 660
D
130
895
105
725
15
18
248-341
24 HRC
35 HRC

Heat Treatment of A453 Gr 660 Bolts

Grade Class Solutiona Treatment Hardening Treatment
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

Stree Rupture Requirements of ASME SA 453 Gr 660 Hex Bolt

Grade Class 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

ASTM A453 Grade 660 Class A/B/C/D Marking Requirements

Grade
Class A
Class B
Class C
Class D
Grade 660
BPF 660A
BPF 660B
BPF 660C
BPF 660D NR

Torque of A453 Gr 660 Bolts

View ASTM A453 Grade 660 Bolt & Screw Torque which is calculated from a yield strength of 70ksi

A453 Gr 660 Bolts Nominal Diameter (in) Threads (in) Torque ft-lb (Dry) Torque ft-lb (Lubricated)
1/4″ 20 6.5 4.8
28 7.4 5.5
5/16″ 18 13.2 10.0
24 14.7 11.0
3/8″ 16 23.5 17.7
24 26.6 19.9
7/16″ 16 37.6 28.2
24 42.0 31.5
1/2″ 13 57.4 43.0
20 64.7 48.5
9/16″ 12 82.7 62.1
18 92.3 69.2
5/8″ 11 114.2 85.7
18 129.3 97.0
3/4″ 10 203 152
16 226 170
7/8″ 9 326 245
14 361 270
1″ 8 490 368
14 549 412
1-1/4″ 7 853 639
12 944 708
1-1/2″ 6 1484 639
12 1669 1252

Check below ASTM A453 Grade 660 Bolt & Screw Torque which is calculated from a yield strength of 80ksi

A453 Gr 660 Bolts Nominal Diameter (in) Threads (in) Torque ft-lb (Dry) Torque ft-lb (Lubricated)
1/4″ 20 7.4 5.5
28 8.4 6.3
5/16″ 18 15.1 11.4
24 16.8 12.6
3/8″ 16 26.9 20.2
24 30.4 22.8
7/16″ 14 43.0 32.3
20 48.0 36.0
1/2″ 13 65.6 49.1
20 73.9 55.4
9/16″ 12 94.5 71.0
18 105.5 79.1
5/8″ 11 130.5 97.9
18 147.8 110.9
3/4″ 10 232 174
16 258 194
7/8″ 9 373 280
14 412 309
1″ 8 560 420
14 628 471
1-1/4″ 7 975 730
12 1079 809
1-1/2″ 6 1696 1271
12 1908 1430

DIN Specification of ASTM A453 Grade 660b Fasteners

ASTM A453 Grade 660 Bolts DIN No. Description
84 Slotted Cheese Head Machine Screws
85 Slotted Pan Head Machine Screws
94 Cotter Pin
125A Flat Washer (without Chamfer)
125B Flat Washer (with Chamfer)
127B Split Lock Washer
137B Spring Wave Washer
315 Wing Nut
439B Machine Screws Hex Nut, Finished Hex Jam Nut
911 Long Arm Hex Key
912 Hex Socket Head Cap Screws
916 Hex Socket Set Screws
931 Hex Head Cap Screws Partially Threaded
933 Hex Head Cap Screws Fully Threaded
934 Finished Hex Nut
939 Double End Stud
960 Hex Head Cap Screws Partially Threaded
961 Hex Head Cap Screws Fully Threaded
963 Slotted Flat Head Machine Screws
964 Slotted Oval Head Machine Screws
965 Phillips Flat Head Machine Screws
966 Phillips Oval Head Machine Screws
975 Threaded Rod
980V Hex Steel Prevailing Torque Lock Nut
985 Hex Nylon Insert Lock Nut
6334 Rod Coupling Nut
6797A External Tooth Lock Washer
6797J Internal Tooth Lock Washer
6912 Hex Low Socket Head Cap Screws
6921 Hex Flange Head Screws
6923 Hex Flange Nut
ISO 7379 Hex Socket Head Shoulder Screws
ISO 7380 Hex Button Socket Head Cap Screws
7985 Phillips Pan Head Machine Screws
7991 Hex Flat Socket Head Cap Screws

ANSI / ASME Standards for ASTM A453 Grade 660 Bolts (inch series)

B18.1.1 Small Solid Rivets B18.8.1 Clevis Pins and Cotter Pins
B18.1.2 Large Rivets B18.8.2 Taper Pins, Dowel Pins, Straight Pins, Grooved Pins and Spring Pins
B18.2.1 Square and Hex Bolts and Screws B18.9 Plow Bolts
B18.2.2 Square and Hex Nuts B18.10 Track Bolts and Nuts
B18.2.6 Fasteners for use in Structural Applications B18.11 Miniature Screws
B18.3 Socket Cap, Shoulder and Set Screws B18.13 Screws and Washer Assemblies (Sems)
B18.5 Round Head Bolts B18.15 Forged Eyebolts
B18.6.2 Slotted Head Cap Screws, Square Head Set Screws, and Slotted Headless Set Screws B18.17 Wing Nuts, Thumb Screws and Wing Screws
B18.6.3 Machine Screws and Machine Screws Nuts B18.21.1 Lock Washers
B18.6.4 Thread Forming and Thread Cutting Tapping Screws and Metallic Drive Screws B18.22.1 Plain Washers
B18.7 General Purpose Semi- Tubular Rivets, Full Tubular Rivets, Split Rivets and Rivet Caps B18.23.1 Beveled Washers

ASTM A453 Grade 660 Stud Bolts Chemical Properties

Element
Grade 660
Carbon
0.08 max
Manganese
2.00 max
Phosphorus, max
0.040 max
Sulfur, max
0.030 max
Silicon
1.00 max
Nickel
24.0-27.0
Chromium
13.5-16.0
Molybdenum
1.00-1.50
Tungsten
…
Titanium
1.9-2.35
Columbium *
…
Aluminum
0.35 max
Vanadium
0.10-0.50
Boron
0.001-0.010
Copper
–

ASTM A453 Grade 660 Nuts Equivalent Properties

AISI
UNS
BS
Wr No.
En Name
DIN EN
JIS
AMS
ASTM
other names
Additional Requirements
660
S66286
HR 51
1.4944
X6NiCrTiMoV26-15
10269
SUS 660
5726
ASTM A453 GRADE 660A
incoloy a286
NACE MR-0175