Specifications

Hex Head Flange Bolt
1.Hot foring,
2.Size: M16~M100
3.Finish:plain, black ,zinc plated, hot dip galva
4.Fast Delivery

Hex bolt,flange bolt,bolt standard also available in IFIC-28 and also available in stainless and brass.

DIN6921 Carbon Hex Flange Bolt:

1,Over 15years manufacturer and export experience;

2,Cooperate with first class big importers in America and Europeancountries;

3,Wide variety of materials to include: low carbon, high tensile andalloy;

4,Working process include: cold forged, hot forged, and machining, also CNCmachine, can do OEM order;

5, full sizes available to include metric, and imperial, extra long and extrashort sizes.

6, ISO management.

7, Also available in IFI C-28 and also available in stainless and brass.

Flange Bolt-Up - Bolting Torque Tables

The torque tables are built on specific assumptions regarding bolt and nut factor. Before using a given torque table, these assumptions should be verified to insure they are appropriate for the specific application.

Even if all assumptions are appropriate, results may vary depending on actual conditions. Many factors induce scatter in the results or increase the inherent variability in the bolting process. These include variations in the nut factor; bolt, flange and nut condition; equipment calibration and condition; perpendicularity of the bolt, nut and flange; etc.

The values in the tables are based on the equation:

S=	Fkd
	12

Where:
T = Torque value, (ft-lbs)
F = Bolt pre-load, (lbs)
k = Nut Factor based on lubricant used
d = Nominal bolt diameter, (in.)

The nut factor is not the coefficient of friction.
It is an experimentally derived constant that includes the impact of friction.

Bolt Dia	Torgue FT-LBS			Torque Nm
Bolt Dia	30% Initial Torgue	70% Torque	100% Final Torque	30% Initial Torgue	70% Torque	100% Final Torque
1/2	22	51	73	30	69	99
9/16	32	74	105	43	100	142
5/8	44	102	145	60	138	197
3/4	77	180	257	104	244	348
7/8	100	232	332	136	315	450
1	149	348	498	202	472	675
1-1/8	178	415	593	241	563	804
1-1/4	250	584	834	339	792	1131
1-3/8	261	609	870	354	826	1180
1-1/2	345	804	1149	468	1090	1558
1-9/16	235	549	784	319	744	1063
1-5/8	267	624	891	362	846	1208
1-3/4	336	785	1121	456	1064	1520
1-7/8	418	974	1392	567	1321	1887
2	512	1194	1706	694	1619	2313
2-1/4	740	1727	2467	1003	2341	3345
2-1/2	1026	2393	3419	1391	3244	4636
2-3/4	1380	3219	4599	1871	4364	6235
3	1805	4211	6015	2447	5709	8155
Bolting torque to develop 70% Bolt Yield Stress at Nut Factor, K=0.16

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