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ASTM A194/A194M Nuts Specification

Carbon Steel,Alloy Steel & Stainless Steel Nuts for High Temperature or High Pressure Service Applications

Related Specifications of ASTM A194/A194M Bolting

A193 A320 A563M F2437

ASTM A194/A194M Chemical Requirements

Grade Description
and
UNS Designation		 C Mn P SE Si Cr Ni Mo Ti CbH N Cu Se V Al
ASTM A194/A194M Grade 1 C 0.15 min 1.00 0.040 0.050 0.40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ASTM A194/A194M Grade 2, 2HM, and 2H C 0.40 min 1.00 0.040 0.050 0.40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ASTM A194/A194M Grade 3 (501) S50100 0.10 min 1.00 0.040 0.030 1.00 4.0-6.0 . . . 0.40-0.65 . . . . . . . . . . . . . . . . . . . . .
ASTM A194/A194M Grade 6 (410) S41000 0.08-0.15 1.00 0.040 0.030 1.00 11.5-13.5 . . . . . . . . . . . . . . . . . . . . . . . . . . .
ASTM A194/A194M Grade 6F (416) S41600 0.15 1.25 0.060 0.15 min 1.00 12.0-14.0 . . . . . . . . . . . . . . . . . . . . . . . . . . .
ASTM A194/A194M Grade 6F (416Se) S41623 0.15 1.25 0.060 0.060 1.00 12.0-14.0 . . . . . . . . . . . . . . . . . . 0.15 min . . . . . .
ASTM A194/A194M Grade 7G, 7MG Cr - MoG 0.38-0.48 0.75-1.0 0.035 0.04 0.15-0.35 0.80-1.10 . . . 0.15-0.25 . . . . . . . . . . . . . . . . . . . . .
ASTM A194/A194M Grade 43 Ni-Cr-Mo 0.38–0.43 0.60–0.85 0.035 0.04 0.15–0.35 0.70–0.90 1.65–2.0 0.20–0.30 . . . . . . . . . . . . . . . . . . . . .
ASTM A194/A194M Grade 8, 8A (304) S30400 0.08 2.00 0.045 0.030 1.00 18.0-20.0 8.0-11.0 . . . . . . . . . . . . . . . . . . . . . . . .
ASTM A194/A194M Grade 8C, 8CA (347) S34700 0.08 2.00 0.045 0.030 1.00 17.0-19.0 9.0-12.0 . . . . . . 10 x C content, min 1.10 . . . . . . . . . . . . . . .
ASTM A194/A194M Grade 8CLN, 8CLNA (347LN) S34751 0.005- 0.020 2.00 0.045 0.030 1.00 17.0-19.0 9.0-13.0 . . . . . . 0.20-0.50, 15 x C content, min 0.06-0.10 . . . . . . . . . . . .
ASTM A194/A194M Grade 8CLNCuB, 8CLNCuBA S34752J 0.005-0.020 2.00 0.035 0.010 0.60 17.0-19.0 10.0-13.0 0.20-1.20 . . . 0.20-0.50, 15 x C content, min 0.06-0.12 2.50-3.50 . . . . . . . . .
ASTM A194/A194M Grade 8M, 8MA (316) S31600 0.08 2.00 0.045 0.030 1.00 16.0-18.0 10.0-14.0 2.00-3.00 . . . . . . . . . . . . . . . . . . . . .
ASTM A194/A194M Grade 8T, 8TA (321) S32100 0.08 2.00 0.045 0.030 1.00 17.0-19.0 9.0-12.0 . . . 5 x (C+N) min - 0.70 max . . . 0.10 . . . . . . . . . . . .
ASTM A194/A194M Grade 8F, 8FA (303) S30300 0.15 2.00 0.20 0.15 min 1.00 17.0-19.0 8.0-10.0 . . . . . . . . . . . . . . . . . . . . . . . .
ASTM A194/A194M Grade 8F, 8FA (303Se) S30323 0.15 2.00 0.20 0.06 1.00 17.0-19.0 8.0-10.0 . . . . . . . . . . . . . . . 0.15 min . . . . . .
ASTM A194/A194M Grade 8P, 8PA (305) S30500 0.12 2.00 0.045 0.030 1.00 17.0-19.0 11.0-13.0 . . . . . . . . . . . . . . . . . . . . . . . .
ASTM A194/A194M Grade 8N, 8NA (304N) S30451 0.08 2.00 0.045 0.030 1.00 18.0-20.0 8.0-11.0 . . . . . . . . . 0.10-0.16 . . . . . . . . . . . .
ASTM A194/A194M Grade 8LN, 8LNA (304LN) S30453 0.030 2.00 0.045 0.030 1.00 18.0-20.0 8.0-11.0 . . . . . . . . . 0.10-0.16 . . . . . . . . . . . .
ASTM A194/A194M Grade 8MN, 8MNA (316N) S31651 0.08 2.00 0.045 0.030 1.00 16.0-18.0 10.0-13.0 2.00-3.00 . . . . . . 0.10-0.16 . . . . . . . . . . . .
ASTM A194/A194M 8MLN, 8MLNA (316LN) S31653 0.030 2.00 0.045 0.030 1.00 16.0-18.0 10.0-13.0 2.00-3.00 . . . . . . 0.10-0.16 . . . . . . . . . . . .
ASTM A194/A194M Grade 8R, 8RAF (XM19) S20910 0.06 4.0-6.0 0.045 0.030 1.00 20.5-23.5 11.5-13.5 1.50-3.00 . . . 0.10-0.30 0.20-0.40 . . . . . . 0.10-0.30 . . .
ASTM A194/A194M Grade 8S, 8SA (Nitronic 60) S21800 0.10 7.0-9.0 0.060 0.030 3.5-4.5 16.0-18.0 8.0-9.0 . . . . . . . . . 0.08-0.18 . . . . . . . . . . . .
ASTM A194/A194M Grade 8MLCuN, 8MLCuNA (254) S31254 0.020 1.00 0.030 0.010 0.80 19.5-20.5 17.5-18.5 6.0-6.5 . . . . . . 0.18-0.22 0.50-1.00 . . . . . . . . .
ASTM A194/A194M Grade B8ML4CuN (317) S31730 0.030 2.00 0.040 0.010 1.00 17.0-19.0 15.0-16.5 3.0-4.0 . . . . . . 0.045 4.0-5.0 . . . . . . . . .
ASTM A194/A194M Grade 9C, 9CA (AL-6XN) N08367 0.030 2.00 0.040 0.030 1.00 20.0-22.0 23.5- 25.5 6.0-7.0 . . . . . . 0.18-0.25 0.75 . . . . . . . . .
ASTM A194/A194M Grade 16 Cr Mo V 0.36-0.47 0.45-0.70 0.035 0.040 0.15-0.35 0.80-1.15 . . . 0.50-0.65 . . . . . . . . . . . . . . . 0.25-0.35 0.15B
  • (A) The intentional addition of Bi, Se, Te, and Pb is not permitted except for Grades 6F, 8F, and 8FA, in which Se is specified and required.
  • (B) Total aluminum, soluble and insoluble.
  • (C) Maximum, unless minimum or range is indicated.
  • (D) Where ellipses (…) appear in this table there is no requirement and the element need not be determined or reported.
  • (E) Because of the degree to which sulfur segregates, product analysis for sulfur over 0.060 % max is not technologically appropriate.
  • (F) As described in Specification A276/A276M.
  • (G) Typical steel compositions used for this grade include 4140, 4142, 4145, 4140H, 4142H, and 4145H.
  • (H) Niobium (Nb) and Columbium (Cb) are alternate names for element 41 in the Periodic Table of the Elements.
  • (I) Product Analysis-Individual determinations sometimes vary from the specified limits as shown in the tables. The several determinations of any individual element in a heat may not vary both above and below the specified range. Product variation limits are over for maximums, over or under for ranges, and under for minimums, unless otherwise indicated.

ASTM A194/A194M Mechanical Requirements

ASTM A194/A194M Hardness RequirementsA

Grade and Type Completed Nuts Sample Nut after Treatment
Brinell Hardness Rockwell Hardness Brinell Hardness, min Rockwell Hardness B Scale, min
C Scale B Scale
ASTM A194/A194M Grade 1 121 min ... 70 min 121 70
ASTM A194/A194M Grade 2 159 to 352 ... 84 min 159 84
ASTM A194/A194M Grade 2H to 11/2 in. or M36, incl 248 to 327 24 to 35 ... 179 89
ASTM A194/A194M Grade 2H over 11/2 in. or M36 212 to 327 35 max 95 min 147 79
ASTM A194/A194M Grade 2HM and 7M 159 to 235 ... 84 to 99 159 84
ASTM A194/A194M Grade 3, 7, 16 and 43 248 to 327 24 to 35 ... 201 94
ASTM A194/A194M Grade 6 and 6F 228 to 271 20 to 28 ... ... ...
ASTM A194/A194M Grade 8, 8C, 8CLN, 8CLNCuB, 8M, 8T, 8F, 8P, 8N, 8MN, 8LN, 8MLN, 8MLCuN, 8ML4CuN, and 9C 126 to 300 32 max 60 min ... ...
ASTM A194/A194M Grade 8A, 8CA, 8CLNA, 8CLNCuBA, 8MA, 8TA, 8FA, 8PA, 8NA, 8MNA, 8LNA, 8MLNA, 8MLCuNA, 8ML4CuNA,  and 9CA 126 to 192 ... 60 to 90 ... ...
ASTM A194/A194M Grade 8R, 8RA, 8S, and 8SA 183 to 271 25 max 88 min ... ...
  • (A) Where ellipses (…) appear in this table there is no requirement.

ASTM A194/A194M Proof Load Using Threaded Mandrel (Inch Series)

Nominal Size, in. Threads per Inch Stress Area in. 2 Proof Load, lbf A
Grade 1 Grades 2, 2HM, 6, 6F, 7M Grades 2H, 3, 7, 16, 43 All Types of Grade 8, Grades 9C and 9CA
Heavy HexB HexC Heavy HexD HexE Heavy HexF HexG Heavy HexH HexI
1/4 20 0.0316 4 130 3 820 4 770 4 300 5 570 4 770 2 540 2 380
5/16 18 0.0524 6 810 6 290 7 860 7 070 9 170 7 860 4 190 3 930
3/8 16 0.0774 10 080 9 300 11 620 10 460 13 560 11 620 6 200 5 810
7/16 14 0.1063 13 820 12 760 15 940 14 350 18 600 15 940 8 500 7 970
1/2 13 0.1419 18 450 17 030 21 280 19 160 24 830 21 280 11 350 10 640
9/16 12 0.182 23 660 21 840 27 300 24 570 31 850 27 300 14 560 13 650
5/8 11 0.226 29 380 27 120 33 900 30 510 39 550 33 900 18 080 16 950
3/4 10 0.334 43 420 40 080 50 100 45 090 58 450 50 100 26 720 25 050
7/8 9 0.462 60 060 55 440 69 300 62 370 80 850 69 300 36 960 34 650
1 8 0.606 78 780 72 720 90 900 81 810 106 000 90 900 48 480 45 450
11/8 8 0.790 102 700 94 800 118 500 106 700 138 200 118 500 63 200 59 250
11/4 8 1.000 130 000 120 000 150 000 135 000 175 000 150 000 80 000 75 000
13/8 8 1.233 160 200 148 000 185 000 166 500 215 800 185 000 98 640 92 450
11/2 8 1.492 194 000 170 040 223 800 201 400 261 100 223 800 119 360 111 900
  • (A) See limit for proof load test in 8.2.2.1. The proof load for jam nuts shall be 46 % of the tabulated load.
  • (B) Based on proof stress of 130 000 psi.
  • (C) Based on proof stress of 120 000 psi.
  • (D) Based on proof stress of 150 000 psi.
  • (E) Based on proof stress of 135 000 psi.
  • (F) Based on proof stress of 175 000 psi.
  • (G) Based on proof stress of 150 000 psi.
  • (H) Based on proof stress of 80 000 psi.
  • (I) Based on proof stress of 75 000 psi.

ASTM A194/A194M Proof Load Using Threaded Mandrel (Metric)

Nominal Size, mm Threads Pitch Stress Area mm 2 Proof Load, kNA
Grade 1 Grades 2, 2HM, 6, 6F, 7M Grades 2H, 3, 7, 16, 43 All Types of Grade 8, and Grades 9C and 9CA
Heavy HexB HexC Heavy HexD HexE Heavy HexF HexG Heavy HexH HexI
M6 1.0 20.1 18.0 16.6 20.8 18.7 29.2 20.8 11.1 10.4
M8 1.25 36.6 32.8 30.2 37.9 34.0 44.1 37.9 20.1 18.8
M10 1.50 58.0 51.9 47.9 60.0 53.9 69.9 60.0 31.9 29.9
M12 1.75 84.3 75.5 69.5 87.3 78.4 101.6 87.3 46.4 43.4
M14 2.0 115.0 102.9 94.9 119.0 107.0 138.6 119.0 63.3 59.2
M16 2.0 157.0 140.5 129.5 162.5 146.0 189.2 162.5 86.4 80.9
M20 2.5 245.0 219.3 202.1 253.6 227.8 295.2 253.6 134.8 126.2
M22 2.5 303.0 271.2 249.9 313.6 281.8 365.1 313.6 166.7 156.0
M24 3.0 353.0 315.9 291.2 365.4 328.3 425.4 365.4 194.2 181.8
M27 3.0 459.0 411.0 378.7 475.1 426.9 553.4 475.1 252.5 236.4
M30 3.5 561.0 502.1 462.8 580.6 521.7 676.0 580.6 308.6 288.9
M36 4.0 817.0 731.2 674.0 845.6 759.8 984.5 845.6 449.4 420.8
  • (A) See limit for proof load test in 8.2.2.1. The proof load for jam nuts shall be 46 % of the tabulated load.
  • (B) Based on proof stress of 895 MPa.
  • (C) Based on proof stress of 825 MPa.
  • (D) Based on proof stress of 1035 MPa.
  • (E) Based on proof stress of 930 MPa.
  • (F) Based on proof stress of 1205 MPa.
  • (G) Based on proof stress of 1035 MPa.
  • (H) Based on proof stress of 550 MPa.
  • (I) Based on proof stress of 515 MPa.
Grade Minimum Tempering Temperature, °F [°C]
ASTM A194/A194M Grade 2H 850 [455]
ASTM A194/A194M Grade 2HM 1150 [620]
ASTM A194/A194M Grade 3 1050 [565]
ASTM A194/A194M Grade 6 and 6F 1100 [595]
ASTM A194/A194M Grade 7 1100 [595]
ASTM A194/A194M Grade 7M 1150 [620]
ASTM A194/A194M Grade 43 1100 [595]
ASTM A194/A194M Grade 16 1200 [650]

ASTM A194/A194M Proof Load Testing of Strain Hardened Nuts Using Threaded Mandrel -(Inch)

Proof Load, kNA
NominalSize, mm ThreadPitch Stress Area,mm2 All Types of Grade 8(strain hardened) All Types of Grade 8(strain hardened)
Heavy HexC HexB
1/4 20 0.0316 3 950 3 480
5/16 18 0.0523 6 550 5 760
3/8 16 0.0774 9 675 8 510
7/16 14 0.1063 13 290 11 690
1/2 13 0.1419 17 740 15 610
9/16 12 0.182 22 750 20 020
5/8 11 0.226 28 250 24 860
3/4 10 0.334 41 750 36 740
7/8 9 0.462 53 130 46 200
1 8 0.606 69 690 60 600
11/8 8 0.790 82 950 75 050
11/4 8 1.000 105 000 95 000
13/8 8 1.233 123 300 110 970
11/2 8 1.492 149 200 134 280
  • (A) The proof load for jam nuts shall be 46 % of the tabulated value.
  • (B) Based on proof stress of 110 000 psi up to 3/4 in.; 100 000 psi 7/8 to 1 in.; 95 000 psi 11/8 to 11/4 in.; 90 000 psi 13/8 to 11/2 in.
  • (C) Based on proof stress of 125 000 psi up to 3/4 in.; 115 000 psi 7/8 to 1 in.; 105 000 psi 11/8 to 11/4 in.; 100 000 psi 13/8 to 11/2 in.

ASTM A194/A194M Proof Load Testing of Strain Hardened Nuts Using Threaded Mandrel (Metric)

Proof Load, kNA
Nominal Size, mm Thread Pitch Stress Area,mm2 All Types of Grade 8(strain hardened) All Types of Grade 8(strain hardened)
Heavy HexC HexB
M6 1.0 20.1 17.3 15.3
M8 1.25 36.6 31.3 27.8
M10 1.50 58.0 49.9 44.1
M12 1.75 84.3 72.5 64.1
M14 2.0 115.0 98.9 87.4
M16 2.0 157.0 135.0 119.3
M20 2.5 245.0 210.9 186.2
M22 2.5 303.0 240.9 209.0
M24 3.0 353.0 280.6 243.5
M27 3.0 459.0 332.7 300.6
M30 3.5 561.0 406.7 367.5
M36 4.0 817.0 563.7 506.5
  • (A) The proof load for jam nuts shall be 46 % of the tabulated value.
  • (B) Based on proof stress of 760 MPa up to M20 mm; 690 MPa M22 to M24 mm; 655 MPa M27 to M30; and 620 MPa for M36.
  • (C) Based on proof stress of 860 MPa up to M20 mm; 795 MPa M22 to M24 mm; 725 MPa M27 to M30 mm; and 690 MPa for M36.

ASTM A194/A194M Proof Load for Large Heavy Hex Nuts (InchA)

Nominal Size, in. Threads per in. Stress Area, in. 2 Proof Load, lbf B
Grade 1 Heavy Hex Grades 2, 2HM, 6, 6F, 7MHeavy Hex Grades 2H, 3, 7, 43, 16 Heavy Hex
15/8 8 1.78 231 400 267 000 311 500
13/4 8 2.08 270 400 312 000 364 000
17/8 8 2.41 313 300 361 500 421 800
2 8 2.77 360 100 415 500 484 800
21/4 8 3.56 462 800 534 000 623 000
21/2 8 4.44 577 200 666 000 777 000
23/4 8 5.43 705 900 814 500 950 250
  • (A) ASME B18.2.2 in the size range over 11/2 in. provides dimensions only for heavy hex nuts. Refer to 8.3.1.
  • (B) Proof loads for nuts of larger dimensions or other thread series may be calculated by multiplying the thread stress area times the proof stress in the notes to Table 3 or Table S1.1. The proof load for jam nuts shall be 46 % of the tabulated load.

ASTM A194/A194M Proof Load for Large Heavy Hex Nuts - (MetricA)

Nominal Size, mm Thread Pitch Stress Area, mm 2 Proof Load, kNB
Grade 1 Heavy Hex Grades 2, 2HM, 6, 6F, 7MHeavy Hex Grades 2H, 3, 7, 43, 16 Heavy Hex
M42 4.5 1120 1002.4 1159.2 1349.6
M48 5 1470 1315.7 1521.4 1771.4
M56 5.5 2030 1816.9 2101.0 2446.2
M64 6 2680 2398.6 2773.8 3229.4
M72 6 3460 3096.7 3581.1 4169.3
  • (A) ASME B 18.2.4.6M in the size range over M36 provides dimensions only for heavy hex nuts. Refer to 7.3.1.
  • (B) Proof loads for nuts of larger dimensions or other thread series may be calculated by multiplying the thread stress area times the proof stress in the notes to Table 4 or Table S1.2. The proof load for jam nuts shall be 46 % of the tabulated load.

ASTM A194/A194M Bolting Surface Treatment Specifications

A153/A153M Specification for Hot Dip Galvanising (Zinc Coating) on Iron and Steel Hardware
B633 Specification for Electrodeposited Coatings of Zinc on Iron and Steel
B695 Specification for Coatings of Zinc Mechanically Deposited on Iron and Steel
B696 Specification for Coatings of Cadmium Mechanically Deposited
B766 Specification for Electrodeposited Coatings of Cadmium
F1941/F1941M Specification for Electrodeposited Coatings on Mechanical Fasteners, Inch and Metric
F2329/F2329M Specification for Zinc Coating, Hot-Dip, Requirements for Application to Carbon and Alloy Steel Bolts, Screws, Washers, Nuts, and Special Threaded Fasteners

ASTM A194/A194M Bolting Components Marking

Product Shall be Marked with our manufacturing trade mark "TorqBolt" or "TB" along with the designated Grade.
Grade and manufacturer’s identification symbols shall be applied to one end of studs and to the heads of bolts and screws of all sizes. (If the available area is inadequate, the grade symbol may be marked on one end and the manufacturer’s identification symbol marked on the other end.) For bolts and screws smaller than 1⁄4 in. [6 mm] in diameter and studs smaller than 3⁄8 in. [10 mm] in diameter and for 1⁄4 in. [6 mm] in diameter studs requiring more than a total of three symbols, the marking shall be a matter of agreement between the purchaser and the manufacturer.

Grade and Type Nuts Hot Forged or Cold Punched Nuts Machined from Bar Stock Nuts Manufactured in Accordance
ASTM A194/A194M Grade 1 TB 1 TB 1B ...
ASTM A194/A194M Grade 2 TB 2 TB 2B ...
ASTM A194/A194M Grade 2HB TB 2H TB 2HB ...
ASTM A194/A194M Grade 2HMB ,C TB 2HM TB 2HMB ...
ASTM A194/A194M Grade 3 TB 3 TB 3B ...
ASTM A194/A194M Grade 6 TB 6 TB 6B ...
ASTM A194/A194M Grade 6F TB 6F TB 6FB ...
ASTM A194/A194M Grade 7 TB 7 TB 7B ...
ASTM A194/A194M Grade 7LD TB 7L TB 7BL ...
ASTM A194/A194M Grade 7MB ,C TB 7M TB 7MB ...
ASTM A194/A194M Grade 7MLB,D TB 7ML TB 7MLB ...
ASTM A194/A194M Grade 43 TB 43 TB 43B ...
ASTM A194/A194M Grade 43LD TB 43L TB 43LB ...
ASTM A194/A194M Grade 8 TB 8 TB 8B TB 8A
ASTM A194/A194M Grade 8C TB 8C TB 8CB TB 8CA
ASTM A194/A194M Grade 8CLNCuB TB 8CLNCuB TB 8CLNCuBB TB 8CLNCuBA
ASTM A194/A194M Grade 8CLN TB 8CLN TB 8CLNB TB 8CLNA
ASTM A194/A194M Grade 8M TB 8M TB 8MB TB 8MA
ASTM A194/A194M Grade 8T TB 8T TB 8TB TB 8TA
ASTM A194/A194M Grade 8F TB 8F TB 8FB TB 8FA
ASTM A194/A194M Grade 8P TB 8P TB 8PB TB 8PA
ASTM A194/A194M Grade 8N TB 8N TB 8NB TB 8NA
ASTM A194/A194M Grade 8MN TB 8MN TB 8MNB TB 8MNA
ASTM A194/A194M Grade 8R TB 8R TB 8RB TB 8RA
ASTM A194/A194M Grade 8S TB 8S TB 8SB TB 8SA
ASTM A194/A194M Grade 8LN TB 8LN TB 8LNB TB 8LNA
ASTM A194/A194M Grade 8MLN TB 8MLN TB 8MLNB TB 8MLNA
ASTM A194/A194M Grade 8MLCuN TB 8MLCuN TB 8MLCuNB TB 8MLCuNA
ASTM A194/A194M Grade 8ML4CuN TB 8ML4CuN TB 8ML4CuNB TB 8ML4CuNA
ASTM A194/A194M Grade 9C TB 9C TB 9CB TB 9CA
ASTM A194/A194M Grade 16 TB 16 TB 16B ...
  • (A) Where ellipses (…) appear in this table there is no requirement.
  • (B) The letters H and M indicate heat-treated nuts (see Section 6).
  • (C) An underline as a marking requirement for grades 2HM and 7M has been removed but is permitted.
  • (D) See Supplementary Requirement S3.

ASME Dimensional Standards

B18.2.2 Imperial Square, Hex, Heavy Hex, Lock, Heavy Hex Lock Nuts
B18.2.4.1M Metric Hex Nuts
B18.2.4.6M Metric Heavy Hex Nuts
ISO 4033 Hexagon High Nuts
ISO 4032 Hexagon Nuts
ISO 4035 Hexagon Lock Nuts

ASTM A194/A194M Bolting Certifications

  • EN 10204 3.1
  • EN 10204 3.2
  • PED 2014/68/EC
  • MERKBLATT AD 2000 W2/W7/W10
  • API 20 E BSL 1/ BSL 2
  • NACE MR 0175
  • NACE MR 0103

ASTM A194/A194M Testing Standards

E18 Test Methods for Rockwell Hardness of Metallic Materials
E21 Test Methods for Elevated Temperature Tension Tests of Metallic Materials
E709 Guide for Magnetic Particle Testing
A962/A962M Specification for Common Requirements for Bolting Intended for Use at Any Temperature from Cryogenic to the Creep Range
A788/A788M Specification for Steel Forgings, General Requirements

ASME Threading Specifications

ASME B1.1  Unified Inch Screw Threads (UN and UNR Thread Form)
ASME B1.3  Screw Thread Gaging System for Dimensional Acceptability - Inch Screw Threads (IN, UNR, and UNJ)
ASME B1.13M Metric Screw Threads - M Profile
ASME B1.21M Metric Screw Threads - MJ Profile
ASME B1.2 Gages & gauing for Unified Screw Threads(Imperial)

ASTM A194/A194M Supplementary Requirements

S1 TB Strain-Hardened Austenitic Steel Nuts
S2 Retests by Purchaser's Representative
S4 Low-Temperature Requirements for Grade 7 or Grade 7M Nuts
S5 Proof Load Tests of Large Nuts
S6 Control of Product by Heat Number
S7 Grain Size Requirements for Non H Grade Austenitic Steels Used Above 1000 °F
S8 Coating on Nuts
S9 Marking Coated Nuts
S10 Proof Load Testing
S2 100 % Hardness Testing of Grade 2HM and 7M