ASTM A194 Grade 4 Nuts

K14510

ASTM A194 Grade 4 Nuts are manufactured from Aisi 4037 Alloy Steel in accordance with ASTM A194 specification. Torqbolt is a prominent A194 Gr.4 nut supplier in India.

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A194 Grade 4 Nuts

ASTM A194 Grade 4 Nuts Properties

ASTM A194 Grade 4 Nuts Chemical Requirements

Element	C	Mn	P	S	Si	Mo
Composition^A, %	0.40 - 0.50	0.70 - 0.90	0.035 max	0.040 max	0.15 - 0.35	0.20 - 0.30

ASTM A194 Grade 4 Nuts Mechanical Requirements

Hardness

Grade	Completed Nuts			Sample Nut After Heat Treatment
	Brinell Hardness, BHN	Rockwell Hardness		Brinell Hardness, BHN, min	Rockwell Hardness, HRB, min
	Brinell Hardness, BHN	HRC	HRB	Brinell Hardness, BHN, min	Rockwell Hardness, HRB, min
ASTM A194 Grade 4	248 - 327	24 - 35	...	201	94

Proof load

Nominal Size, Inch.	Threads Per Inch	Proof Load, lbf
Nominal Size, Inch.	Threads Per Inch	Heavy Hex^A	Hex^B
1/4	20	5 570	4 770
5/16	18	9 170	7 860
3/8	16	13 560	11 620
7/16	14	18 600	15 940
1/2	13	24 830	21 280
9/16	12	31 850	27 300
5/8	11	39 550	33 900
3/4	10	58 450	50 100
7/8	09	80 850	69 300
01	08	106 000	90 900
1-1/8	08	138 200	118 500
1-1/4	08	175 000	150 000
1-3/8	08	215 800	185 000
1-1/2	08	261 100	223 800

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