ASTM A193 Grade B8 Bolts

PED Approved manufacturer and supplier of SA 193 B8 Class 1 Stud Bolts and B8 Hex Bolt in India, View Temperature Range

 

ASTM A193 Grade B8 Bolts
ASTM A193 Grade B8 Bolts
A193 B8 Studs
A193 B8 Studs
ASTM A193 Gr B8 Hex Bolt
ASTM A193 Gr B8 Hex Bolt

 

Not finding the specific size of SA 193 Gr B8 Studs? Manufacturer and exporter of ASTM A193 B8 Threaded Rod material in metric sizes

ASTM A193 bolts are intended for high temperature and high pressure applications made from type 304 stainless steel. ASTM A193 B8 Bolts are extremely versatile and they are used all over the globe, as is similarly the case with A193 B8 Studs. Plus, their welding characteristics are exceptional. These types of bolts can be deep drawn and there is no need for any intermediate annealing. ASTM A193 B8  are used in a large number of atmospheric environs and various kinds of media, although at around 60 ºC it is subject to stress corrosion cracking and in warm chloride environs, it is subject to crevice corrosion and pitting.

ASTM A193 B8 Material is accepted as resistant to water that is of the potable kind, at temperatures that are ambient, for around 200 mg/L chlorides, reducing for around 150 mg/L at 60 ºC. ASTM A193 B8 Bolts have a structure that is austenitic and because of this, they display superb toughness, even right down at temperatures that are cryogenic.

ASTM A193 Gr B8 Bolts display excellent resistance to oxidation at a temperature up to 870 ºC. ASTM A320 Bolts or ASTM A193 Grade B8 Bolts are resistant to carbide precipitation. By using thermal treatment, it is not possible to harden these grades.  In the annealed state, all these types of stainless steel A193 B8 fasteners are austenitic and non-magnetic. So as to give these A193 B8 fasteners a better tensile strength, they are cold worked (normally drawing).

ASTM A320 bolts are for cold temperature applications made from type 304 stainless steel. ASTM A193/A193M-11 specifies the mechanical properties of bolts, screws and nuts made of austenitic (amongst others) stainless steels for high temperature or high pressure service and other special purpose applications. In ASTM A193/A193M-11, austenitic steels are divided into 6 classes (1, 1A, 1B and 2, 2B and 2C) and 27 grades (B8, B8A, BBC, BBCA, B8M, B8MA, B8M2, B8M3, BBP, B8PA, B8N, B8NA, B8MN, B8MNA, B8MNLCuN, B8MLCuNA, B8T, B8TA, B8R, B8RA, B8S, B8SA, B8LN, B8LBNA, B8MLN, and B8LNA).

 

ASTM A193 Grade B8 Bolts Specification Chart

Standard DIN, UNI, ISO, JIS, GB, IS, BS, ASME, ANSI, ASTM and all International Standards
Size M2, M2.5, M3, M4, M5, M6, M8, M10, M12, M14, M16, M20, M24, M30, M36 to M160
Length 3 mm to 200 mm
Studs Threads: METRIC, BSW, BSF, UNC, UNF or as required
Standard:

ANSI - American National Standards Institute

  • ANSI B 18.2.4 2M
  • ANSI B 28.2.4 1M
  • Length are defined in ASME B16.5 standard
  • 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

Bolts In Form of:

Hex, Square, Round, Threading as per Gauge Etc.

Head drive: Phillips, Slotted, Phillips/Slot, Six-Lobe, etc
Thread Metric Coarse
Test Certificate: Manufacturer Test Certificate as per EN 10204 / 3.1
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
Bolts types Hex Bolts, Flange Bolts, Hex Head Bolts, Lag Bolts, Square Bolts, Eye Bolts, U Bolts, T Bolts, Counter sunk Bolts etc.
Nut types Hex Head Nut, Eye Nut, Dome Nut, Wing Nut, T Nut, Panel Nut, Lock Nut, Coupling Nut, Square Nut, Acorn Nut etc.
Screws types 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.
Washers Types Machine Washers, Flat Washer, Star Washers, Sealing Washer, Lock Washer, Split Washer
Packing: IN BULK: canton, pallet, Small Boxs / carton / pallet, or customer request

 

A193 B8 Studs Price Per Kg

ASTM A193 Grade B8M Socket Head Cap Screw $5.59–$258.50
ASTM A193 Grade B8M Plow Bolt, Plain, 5/8-11×2, Gr 5, PK25 $30.65 / pkg. of 25
ASTM A193 Grade B8M Structural Bolt, 1/2-13×1 1/2L, PKG25 $13.21 / pkg. of 25

 

Check size chart with price list of B8 Screws manufactured as required with short lead times., check torque

 

Are you searching any of the below grades from the following countries?

Thailand, France, Europe, Qatar 1-1/8" 2" 1" 7/8" with ASTM A193 B8 Stud Bolt
Belgium, Indonesia, Philippines, Dammam -KSA M30 M36 M38 astm a193 grade b8 bolts
Malaysia, Germany, Thailand, Czechia Grade 10.9 Galvanized M19 m24 a193 b8 stud bolt and nut
Brazil, Saudi Arabia (KSA), Kuwait, South Africa ASTM A193 B8m Class2 Fully Threaded Rod 1/4'' to 4''
Finland, USA, Bangladesh, Malaysia ASTM A193 B8 Hex Bolts 1/4 7/16
Nigeria, Australia, UK, Philippines Full Thread Rod A193 B8 Stud Bolts
Singapore, South Africa, Bahrain ASTM A193 B8 Threaded Rods
Singapore, Italy, Iran, Chile ASTM A193 B8 M3-M120 DIN975 Stud Bolts
UAE, Malaysia, Hong Kong, Oman ASTM A193 Grade B8 Full Thread Stud Bolts And Nuts For Pipe Flange
Dubai, Malaysia, Russia, Netherlands Studs ASME B18.2.1 SA-193 Gr. B8 Class 2 Stud Bolt
Malaysia, Turkey, Norway, United Arab Emirates (UAE) 1-3/8 Stainless Steel 316L ASTM A193 B8 B8m Stud Bolt
UK, Spain, Mexico, Egypt DIN912 ASTM A193 B8 Allen Cap Head or Hex Socket Head Bolt
Ellington -United States, Canada, Poland, UK ASTM A193 Grade B8 Class 2 Threaded Rod Stainless Stud Bolts
UAE, Europe, Malaysia, United Kingdom -UK Grade 4.8 8.8 SS 304 ASTM A193 B8 Threaded Rod
Malaysia, Japan, Romania, Europe 5/8 3/8 1/2 ASTM A193 Gr B8m B8t B8c Bolt
Singapore, Malaysia, Canada, Philippines A193 B8 Class 1 Stud Bolt
Philippines, Taiwan, Los Alamos -Mexico, Malaysia ASTM A193 Grade B8 Black Oxide Heavy Hex Bolts
China, Colombia, Malaysia, Sweden A193 B8 Hex Bolt & Nut with Washer

 

Chemical Equation of ASTM A193 Gr B8 Bolts

Grade   C Mn P S Si Cr Ni
B8 Min - - - - - - -
Max 0.08 2.0 0.045 0.03 1.0 20.0 11.0
304 Min - - - - - 18.0 8.0
Max 0.08 2.0 0.045 0.03 0.75 20.0 10.5
304L Min - - - - - 18.0 8.0
Max 0.03 2.0 0.045 0.03 0.75 20.0 12.0
304H Min 0.04 - - - - 18.0 8.0
Max 0.10 2.0 0.045 0.03 0.75 20.0 10.5

Mechanical Strength of ASME SA193 Grade B8 Bolts

Grade Size, Dia (") Size, Dia (mm) Tensile Strength (MPa) min Yield Strength, 0.2% Proof, (MPa) min Elong, (% in 4D min) Red of Area (% min) Hardness (HRC max)
B8 CL2 <= 3/4 <=19.05 860 690 12 35 35
B8 CL2 > 3/4 <=1 >19.05 <=25.4 795 550 15 35 35
B8 CL2 > 1 <= 1.1/4 >25.4 <= 31.75 725 450 20 35 35
B8 CL2 > 1.1/4 <= 1./12 >31.75 <=38.1 690 345 28 45 35
B8 CL2B > 1.1/2 <=2 >38.1 <=50.8 655 515 25 40 35
B8 CL2B >2 <=2.1/2 >50.8 <=63.5 620 450 30 40 35
B8 CL2 B >2.1/2 <= 3 >63.5 <=76.2 550 380 30 40 35
304 515 205 40 55 15
304L 485 170 40 55 15
304H 515 205 40 55 15

 

We Keep Bulk Stock of A193 B8 Heavy Hex Bolts at our stockyard, contact us for Free Sample & stock list

 

SA193 B8 Bolts Physical Properties

Grade Density, (kg/m³) Elastic Modulus (GPa) Mean Co-eff of Thermal Expansion (μm/m/°C), Thermal Conductivity (W/m.K), Specific Heat, 0-100 °C (J/kg.K) Elec Resistivity (nΩ.m)
0-100 °C 0-315 °C 0-538 °C
At 100 °C At 500 °C
304/L/H 8000 193
17.2 17.8 18.4
16.2 21.5
500 720

Dimensions Of ASTM A193 Grade B8 Bolt

Hex Bolt Dimension

NOMINAL SIZE (D)
BODY DIAMETER
HEAD THICKNESS
ACROSS THE FLATS
ACROSS BOLTS 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
140.00
167.43
159.60

Dimensions of A193 B8 Heavy Hex Bolts

Heavy Hex Bolts Dimensions

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.

 

Custom sizes A193 B8MLCuN Stainless Steel Bolts can be produced as per client drawing, see tensile strength

 

Size Chart of ASME SA193 B8 Bolts

NOM., DIA. PITCH, mm DIAMETER, mm DIAMETER, inch NUT, Size
M10 1.5 10 0.3937 17
M12 1.75 12 0.4724 19
M14 2 14 0.5512 22
M16 2 16 0.6299 24
M18 2.5 18 0.7087 27
M20 2.5 20 0.7874 30
M22 2.5 22 0.8661 32
M24 3 24 0.9449 36
M27 3 27 1.063 41
M30 3.5 30 1.1811 46
M33 3.5 33 1.2992 50
M36 4 36 1.4173 55
M39 4 39 1.5354 60
M42 4.5 42 1.6535 65
M45 4.5 45 1.7717 70
M48 5 48 1.8898 75
M52 5 52 2.0472 80
M56 5.5 56 2.2047 85
M60 5.5 60 2.3622 90
M64 6 64 2.5197 95
M68 6 68 2.6772 100
M72 6 72 2.8346 105
M76 6 76 2.9921 110
M80 6 80 3.1496 115
M85 6 85 3.3464 120
M90 6 90 3.5433 130
M100 6 100 3.937 145
M110 6 110 4.3307 155
M125 6 125 4.9212 180
M140 6 140 5.5118 200
M160 6 160 6.2992 230

ASTM A193 B8 Bolts Torque Chart

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

 

ASME SA193 B8 Socket Head Cap Screw Dimension Schedule

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
1 1/4 1.277 1.223 2 1.938 2.309 2.209 0.876 0.749 2.75 3
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
5/8 0.642 0.605 1.062 1.031 1.227 1.175 0.444 0.378 1.5 1.75
1 1/8 1.149 1.098 1.812 1.756 2.093 2.002 0.78 0.658 2.5 2.75
1 1/2 1.531 1.47 2.375 2.3 2.742 2.622 1.036 0.902 3.25 3.5
1 3/8 1.404 1.345 2.188 2.119 2.526 2.416 0.94 0.81 3 3.25
2 2.039 1.964 3.125 3.025 3.608 3.449 1.388 1.175 4.25 4.5
1 3/4 1.785 1.716 2.75 2.662 3.175 3.035 1.196 1.054 3.75 4
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
3 3.081 2.961 4.625 4.475 5.34 5.102 2.06 1.815 6.25 6.5
2 3/4

 

Comparasion of Metric Sizes To The Closest Inch Equivalent

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

 

Size Table of ASTM A193 Gr B8 Threaded Rod

ASTM A193 Grade b8 Stainless Steel Screws Types SIZE GRADE ASME ISO ASTM
ASTM A193 b8 Knurled Point Socket Set Screws M3 to M20 45H B18.3.6M 4029 F912M
ASTM A193 b8 Stainless Steel Socket Low Head Cap Screws M4 to M20 10.9
ASTM A193 Gr b8 Socket Head Shoulder Screws M6 to M24 012.9 B18.3.3M
Stainless Steel Grade b8 Countersunk Socket Head Screws M3 to M20 012.9 B18.3.5M 10642 F835M
ASTM A193 Grade b8 Button Head Socket Screws M3 to M12 012.9 B18.3.4M 7380 F835M
ASTM A193 Grade b8 Socket Head Cap Screws M1.6 to M64 12.9 B18.3.1 M 4762 A574M
Steel ASTM A193 Grade b8 Flange Button Head Socket Screws M3 to M10 012.9 F835M
Steel ASTM A193 Grade b8 Dog Point Socket Set Screws M3 to M20 45H B18.3.6M 4028 F912M
Steel b8 Grade Flat Point Socket Set Screws M6 to M12 45H B18.3.6M 4026 F912M
ASME Sa 193 b8 Cone Point Socket Set Screws M3 to M12 45H B18.3.6M 4027 F912M
Grade b8 Plain Point Socket Set Screws M3 to M20 45H B18.3.6M 4029 F912M
ASME Sa193 Grade b8 Taper Pressure Plug M8 to M22

 

ASTM A193 B8 Material for sale

ASTM A193 Grade B8 Bolts ASTM A193 B8 Hex Bolt
ASTM A193 B8 Class 2 Bolts ASTM A193 Gr B8 Bolt
ASTM A193 B8 Bolt Hex Bolt A193 B8
ASTM A193 B8 Socket Head Cap Screw ASTM A193 B8 Washer
ASTM A193 B8 Class 2 ASTM A193 B8 Class 1
ASTM A193 B8 Cl2 ASTM A193 B8 Cl1
ASTM A193 B8 Class 2 Bolts ASTM A193 Grade B8 Class 2 Bolts
ASTM A193 And ASTM A320 Grade B8 Cl2 Stud Bolts ASTM A193 B8 304
A320 B8 Bolts A320 B8 Class 2 Bolts
A320 Gr B8 Class 2 ASTM A320 B8 Cl2
A320 B8 Class 2 Bolts ASTM A320 Gr.B8 Cl.2
ASTM A193 Gr B8 Bolts ASTM A193 B8 Studs
ASTM A193 B8 Bolts ASTM A193 B8
ASTM A193 B8 Class 2 ASTM A193 B8 Material

 

ASME SA193 Grade B8 Bolts Classes

Grade Size Tensile ksi, min Yield, ksi, min Elong, %, min RA % min HBW HRC
B8 Class 1 bolts All 75 30 30 50 223 max 96 max
B8 Class 2 bolts Up to 3/4 125 100 12 35 321 max 35 max
7/8 - 1 115 80 15 35
1-1/8 - 1-1/4 105 65 20 35
1-3/8 - 1-1/2 100 50 28 45

 

ASME SA193 Grade B8 Stud Bolts Dimensions Metric

d b c l<125 c l<125<200 c l 200>
M4 8.0000 14.0000 20.0000  
M5 10.0000 16.0000 22.0000  
M6 12.0000 18.0000 24.0000  
M7 14.0000 20.0000 26.0000  
M8 16.0000 22.0000 28.0000  
M10 20.0000 26.0000 32.0000 45.0000
M12 24.0000 30.0000 36.0000 49.0000
M14 28.0000 34.0000 40.0000 53.0000
M16 32.0000 38.0000 44.0000 57.0000
M18 36.0000 42.0000 48.0000 61.0000
M20 40.0000 46.0000 52.0000 65.0000
M22 44.0000 50.0000 56.0000 69.0000
M24 48.0000 54.0000 60.0000 73.0000

 

Raw Material of Sa 193 Gr B8 Bolts

Grade Tensile Class Raw Material Description
B8 bolts Class 1 AISI 304 Stainless Steel, Carbide Solution Treated
B8 bolts Class 2 AISI 304 Stainless Steel, Carbide Solution Treated and Strain Hardened

 

Dimensions Table of A198 Gr. B8 Hex Nut

d e s max s min m max m min
1/4" 0.5100 0.4450 0.4380 0.2000 0.1900
5/16" 0.6100 0.5250 0.5180 0.2500 0.2400
3/8" 0.6900 0.6000 0.5920 0.3120 0.3020
7/16" 0.8200 0.7100 0.7020 0.3750 0.3650
1/2" 0.9500 0.8200 0.8120 0.4370 0.4270
9/16" 1.0600 0.9200 0.9120 0.5000 0.4900
5/8" 1.1700 1.0100 1.0000 0.5620 0.5520
3/4" 1.3900 1.2000 1.1900 0.6870 0.6770
7/8" 1.5000 1.3000 1.2880 0.7500 0.7400
1" 1.7100 1.4800 1.4680 0.8750 0.8650
1.1/8" 1.9300 1.6700 1.6400 1.0000 0.9900
1.1/4" 2.1500 1.8600 1.8150 1.1250 1.1050
1.3/8" 2.3700 2.0500 2.0050 1.2500 1.2300
1.1/2" 2.5600 2.2200 2.1750 1.3750 1.3550
1.3/4" 2.9800 2.5800 2.5200 1.6250 1.6050
2" 3.1900 2.7600 2.7000 1.7500 1.7300

 

Marking of B8 Bolts

Class Manufacturer's Mark Grade Symbol
Class 1 BPF B8
Class 1D BPF B94
Class 2 BPF B8SH
Class 2B BPF B9

 

Heat Treatment of SA193 B8 Threaded Rod

Class bolts Heat Treatment Procedure
Class 1 bolts Carbide Solution Treatment
Class 2 bolts Carbide Solution Treatment & Strain Hardened
Class 2B bolts Carbide Solution Treatment & Strain Hardened

 

A198 Gr. B8 Socket Head Cap Screws Manufacturing Standards

ASTM A194/A194M Specification for Carbon and Alloy Steel Nuts for Bolts for high pressure or high temperature service, or both.
ASTM A320/A320M Specification for alloy-steel and stainless steel bolting for low temperature service.
ASTM A962/A962M Specification for Common Requirements for Boltsing Intended for Use at Any Temperature from Cryogenic to the Creep Range.
ASME B18.2.1 Square and Hex Bolts and Screws.
ASME B18.2.3.3M Metric Heavy Hex Screws
ASME B18.3 Hexagon Socket and Spline Socket Screws
ASME B18.3.1M Metric Socket Head Cap Screws
ASTM E709 Guide of Magnetic Particle Testing.
ASTM E112 Test Methods for Determining Average Grain Size.
ASTM E18 Test Methods for Rockwell Hardness of Metallic Materials.