ASTM A194/A194M

ASTM A194/A194M Nuts Specification

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

Related Specifications

Chemical Composition

Grade	Description and UNS Designation	C	Mn	P	S^E	Si	Cr	Ni	Mo	Ti	Cb^H	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 7^G, 7M^G	Cr – Mo^G	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	S34752^J	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, 8RA^F	(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	0.15^B
(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.

Mechanical Requirements

Hardness Requirement
Proof Load (Inch)
Proof Load (Metric)

Grade and Type	Completed Nuts			Sample Nut after Treatment
	Brinell Hardness	Rockwell Hardness		Brinell Hardness, min	Rockwell Hardness B Scale, min
	Brinell Hardness	C Scale	B Scale	Brinell Hardness, min	Rockwell Hardness B Scale, min
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.

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 Hex^B	Hex^C	Heavy Hex^D	Hex^E	Heavy Hex^F	Hex^G	Heavy Hex^H	Hex^I
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.

Nominal Size, mm	Threads Pitch	Stress Area mm²	Proof Load, kN^A
			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 Hex^B	Hex^C	Heavy Hex^D	Hex^E	Heavy Hex^F	Hex^G	Heavy Hex^H	Hex^I
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]

Strain Hardened Nuts (Inch)
Strain Hardened Nuts (Metric)
Proof Load (Inch)
Proof Load (Metric)

Proof Load, kN^A
NominalSize, mm	ThreadPitch	Stress Area,mm²	All Types of Grade 8(strain hardened)	All Types of Grade 8(strain hardened)
NominalSize, mm	ThreadPitch	Stress Area,mm²	Heavy Hex^C	Hex^B
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.

Proof Load, kN^A
Nominal Size, mm	Thread Pitch	Stress Area,mm²	All Types of Grade 8(strain hardened)	All Types of Grade 8(strain hardened)
Nominal Size, mm	Thread Pitch	Stress Area,mm²	Heavy Hex^C	Hex^B
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.

Nominal Size, in.	Threads per in.	Stress Area, in.²	Proof Load, lbf ^B
Nominal Size, in.	Threads per in.	Stress Area, in.²	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.

Nominal Size, mm	Thread Pitch	Stress Area, mm²	Proof Load, kN^B
Nominal Size, mm	Thread Pitch	Stress Area, mm²	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.

Coating 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

Renowned Brands

Bolting Components Marking

Product Shall be Marked with our manufacturing trade mark Adfast Component LTD 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	1	1B	…
ASTM A194/A194M Grade 2	2	2B	…
ASTM A194/A194M Grade 2H^B	2H	2HB	…
ASTM A194/A194M Grade 2HM^B^,^C	2HM	2HMB	…
ASTM A194/A194M Grade 3	3	3B	…
ASTM A194/A194M Grade 6	6	6B	…
ASTM A194/A194M Grade 6F	6F	6FB	…
ASTM A194/A194M Grade 7	7	7B	…
ASTM A194/A194M Grade 7L^D	7L	7BL	…
ASTM A194/A194M Grade 7M^B^,^C	7M	7MB	…
ASTM A194/A194M Grade 7ML^B^,^D	7ML	7MLB	…
ASTM A194/A194M Grade 43	43	43B	…
ASTM A194/A194M Grade 43L^D	43L	43LB	…
ASTM A194/A194M Grade 8	8	8B	8A
ASTM A194/A194M Grade 8C	8C	8CB	8CA
ASTM A194/A194M Grade 8CLNCuB	8CLNCuB	8CLNCuBB	8CLNCuBA
ASTM A194/A194M Grade 8CLN	8CLN	8CLNB	8CLNA
ASTM A194/A194M Grade 8M	8M	8MB	8MA
ASTM A194/A194M Grade 8T	8T	8TB	8TA
ASTM A194/A194M Grade 8F	8F	8FB	8FA
ASTM A194/A194M Grade 8P	8P	8PB	8PA
ASTM A194/A194M Grade 8N	8N	8NB	8NA
ASTM A194/A194M Grade 8MN	8MN	8MNB	8MNA
ASTM A194/A194M Grade 8R	8R	8RB	8RA
ASTM A194/A194M Grade 8S	8S	8SB	8SA
ASTM A194/A194M Grade 8LN	8LN	8LNB	8LNA
ASTM A194/A194M Grade 8MLN	8MLN	8MLNB	8MLNA
ASTM A194/A194M Grade 8MLCuN	8MLCuN	8MLCuNB	8MLCuNA
ASTM A194/A194M Grade 8ML4CuN	8ML4CuN	8ML4CuNB	8ML4CuNA
ASTM A194/A194M Grade 9C	9C	9CB	9CA
ASTM A194/A194M Grade 16	16	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.

Dimensional Standards

ASME Bolt Dimensional Standards

B18.31.2 Imperial Continious Thread, Double End Reduced & Full Body Studs
B18.31.1M Metric Continious Thread, Double End Reduced & Full Body Studs
B16.5 Imperial Full Thread Stud Bolts
B16.5 Metric Full Thread Stud Bolts
B18.2.1 Imperial Square and Hex Bolts and Screws
B18.2.3.1M Metric Hex Cap Screws
B18.2.3.3M Metric Heavy Hex Screws
B18.2.3.5M Metric Hex Bolts
B18.3 Imperial Hexagon Socket and Spline Socket Screws
B18.3.1M Metric Socket Head Cap Screws
B18.6.7M Metric Machine ScrewsB18.31.3 Threaded Rods (Inch Series)

Certification

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 for Steel Forgings, General Requirements

Threading Specs

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

Product

Precision Components

Contract Manufacturing

Fastener

Resources

materials

Technical