A193 B7 Stud Bolts and Nuts/A194 2h Heavy Hex Nuts

• Customization: Available
• After-sales Service: 1 Year
• Warranty: 1 Year, 1year
• Model NO.: A193 B7 Stud Bolt/A194 2H Heavy Hex Nuts
• Manufacturing Process: Forging
• Surface Treatment: Sand Blast
• Operation Pressure: Atmospheric Pressure, Atmospheric Pressure
• Material: Alloy, Cast Steel
• Certification: ISO 9001:2000
• Power Source: Pneumatic
• Applicable Medium: Crude Oil
• Structure: Vertical
• After-Sales Service: 1year
• Transport Package: Export Packing
• Trademark: Deenpu
• Origin: China
• HS Code: 84314310
• Production Capacity: 1000ton

Product Description

A193 B7 Stud Bolt is a bolt with threads on both ends that designed to be screwed into a fixed part at one end, and to receive a nut on the other end. In Petroleum or Chemical industry, they are prominently used for flange connection, so stud bolt used with two nuts on either side is the most common combination which replaces bolt and nut assembly.

As we know that Stud Bolts have many categories, the type for flange connection is called flange stud bolts, which has fully thread with chambered ends. The theoretical length is measured the thread. Continuous threaded stud bolt is very similar to it, except no chambered ends.

A105N Class 300 Flange is quite common used in industries, but this time we would like to show A193 B7 stud bolt dimensions for ASME B16.5 Class 300 Flanges.

NPS	Diameter   Bolts inch	Length   RF mm	Length   RTJ mm	No   of Bolts
1/2	1/2	65	75	4
3/4	5/8	75	90	4
1	5/8	75	90	4
1 1/4	5/8	85	95	4
1 1/2	3/4	90	100	4
2	5/8	90	100	8
2 1/2	3/4	100	115	8
3	3/4	110	120	8
3 1/2	3/4	110	125	8
4	3/4	115	125	8
5	3/4	120	135	8
6	3/4	120	140	12
8	7/8	140	150	12
10	1	160	170	16
12	1 1/3	170	185	16
14	1 1/3	180	190	20
18	1 1/4	195	210	24
20	1 1/4	205	220	24
24	1 1/2	230	255	24

A193 B7 Stud Bolt Mechanical Properties

Diameter	Tensile Strength	Yield Strength	Elongation	Reduction	Hardness
M64 or Below	860 Mpa	720 Mpa	16	50	321 HB
M64 to M100	795 Mpa	655 Mpa	16	50	321 HB
M100 to M180	690 Mpa	515 Mpa	18	50	321 HB

A194 Grade 2H Heavy Hex Nuts

Standard A194 covers a variety of carbon steel, alloy steel and stainless steel nuts. Nuts of this specification are used for high-pressure and high-temperature conditions. They are quenched and tempered carbon steel nut. Quenching and temper are common heat treatment process. Quenching enhance the hardness of Pipe Fittings. The main processes are heating, heat preservation and quick cooling. Cooling medium generally is brine or oil. High hardness and clear surface can be obtained with brine as the medium, but deform and crack prone to generate. Oil medium is only suitable for stable, Austenite carbon steel or Alloy Steel Fittings under A1 temperature. Temper helps reduce brittleness and internal stress of hex nut. It can adjust mechanical properties to suit different needs. Hex nuts has high hardness and brittleness after quenching, tempering can reduce hardness and increase toughness or plasticity.

Heavy Hex Nuts Dimension Chart

Basic	Width Across Flats	Width Across Corners	Thickness
Dia	Basic	Max	Min	Max	Min	Basic	Max	Min
1/4	1/2	0.5	0.488	0.577	0.556	15/64	0.25	0.218
5/16	9/16	0.562	0.546	0.65	0.622	16/64	0.314	0.28
3/8	11/16	0.688	0.669	0.794	0.763	23/64	0.377	0.341
7/16	3/4	0.75	0.728	0.866	0.83	27/64	0.441	0.403
1/2	7/8	0.875	0.85	1.01	0.969	31/64	0.504	0.464
9/16	15/16	0.938	0.909	1.083	1.037	35/64	0.568	0.526
5/8	1 1/16	1.063	1.031	1.227	1.175	39/64	0.631	0.587
3/4	1 1/4	1.25	1.212	1.443	1.382	47/64	0.758	0.71
7/8	1 7/16	1.438	1.394	1.66	1.589	55/64	0.885	0.833
1	1 5/8	1.625	1.575	1.876	1.796	63/64	1.012	0.956
1 1/8	1 13/16	1.812	1.756	2.093	2.002	1 7/64	1.139	1.079
1 1/4	2	2	1.938	2.309	2.209	1 7/32	1.251	1.187
1 1/2	2 3/8	2.375	2.3	2.742	2.622	1 15/32	1.505	1.433
1 3/4	2 3/4	2.75	2.662	3.175	3.035	1 23/32	1.378	1.31
2	3 1/8	3.125	3.025	3.608	3.449	1 31/32	2.013	1.925
2 1/4	3 1/2	3.5	3.388	4.041	3.862	2 13/64	2.251	2.155
2 3/4	4 1/4	4.25	4.112	4.907	4.688	2 45/64	2.759	2.647
3	4 5/8	4.625	4.475	5.34	5.102	2 61/64	3.013	2.893
3 1/4	5	5.375	5.2	6.207	5.928	3 7/16	3.506	3.37
3 1/2	5 3/8	5.375	5.2	6.207	5.928	3 7/16	3.506	3.37
3 3/4	5 3/4	5.75	5.562	6.64	6.341	3 1/16	3.76	3.616
4	6 1/8	6.125	5.925	7.073	6.755	3 5/16	4.014	3.862

A194 2H Hex Nut Mechanical Properties

Size	Tempering   Temp Fahrenheit	Proof Load   Stress, ksi	Hardness
1/4-1 1/2	850	175	248-327
1 1/2-4	850	175	212-327

Company introduction
Jiangsu Deenpu Petrochemical Machinery Co., Ltd is located in China Petroleum equipment manufacturing base in yancheng city private industrial park, Jiangsu. Major Products: Blowout preventer and accessories; Choke and kill manfold; Choke and Kill Hose; Control Panel; Wellhead & Christmas Tree; Valves; Test Pump; Bop Control Unit; Union/ Swivel Joint/ Fitting; Flange; Spool; Packing Elastomer.
 

 

FAQ
Q1: What's your business range?
A: We manufacture Bop, wellhed, valves ( gate valve, check valve, choke valve, plug valve ), flanges, swivel joint , pup joint and so on.
Q2: How about the quality of the managements?
A: We have a complete quality control system , all of our products will be fully pre-inspection by QC departments before shipping to you . We have the certification of ISO,API Certificate. 
Q3: Can you offer OEM or design services?
A: Yes, we have our own design department and production tools. We can make OEM products according to your requirements.
Q4: What are your terms of payment and delivery time?
A: We could accept T/T, Paypal, Western Union, Credit Assurance. Generally, we will arrange the shipment within 7 days after received payment.
Q5: How about warranty?
A: 12 months warranty.