ASTM A193 B7 Stud Bolt with Two ASTM A194 2h Nuts, Black, HDG, PTFE Coated Stud Bolts

• Material: Stainless Steel
• Grade: A
• Certification: ISO, CE
• Customized: Customized
• Steel Grade: 3.6\4.6\4.8\5.6\6.8\8.8\9.8\10.9\12.9
• Transport Package: Playwood Box, Wooden Case
• Model NO.: A193 B7/
• Trademark: C&N
• Origin: China
• Production Capacity: 100tons/Month

Product Description

We supply high quality of ESPARRAGOS STUD BOLT A193 Grade B7 w/2 NUTS A194 2H,A193 B7 Stud bolt and A194 2H nuts ASME B18.2.1, B18.2.3.6M and B18.2.3.7M dimension standards.

ASTM A193 B7 stud bolt with two ASTM A194 2H nuts HOT DIP GALVANIZED

ASTM A193 B7 stud bolts are manufactured from a chromium-molybdenum steel and are quenched and tempered (heat treated) to acheive the desired mechanical properties (strength).Alloy steel, AISI 4140/4142 quenched and tempered.

ASTM A193 B7 bolts are built to the requirements of numerous specifications and material design properties. To be more specific, ASTM A193 B7 alloy steel is a high temperature grade of A-193. B7 steel is also a chrome moly steel with a minimum tensile strength of 125ksi. Depending on your unique project requirement needs, grade B7 bolts can be used in numerous types of extreme conditions.ASTM A193 B7 stud bolts are ideal for industrial and structural bolting application with high-temperature or high-pressure service environment. A193 B7 stud bolts is  one of the most common materials for B16.5 flange bolting.

ASTM A193/A193M	Standard specification for alloy-steel and stainless steel bolting for high temperature or high pressure service and other special purpose applications.
ASME B16.5	Covers recommended stud bolt quantity, diameter, and length for use in flanged pipe fittings.
ASME B1.1 Class 2A	Specifies the thread form, series, class, allowance, tolerance, and desig nation for unified screw threads. UNC for 1″ diameter and smaller. UN8 (8 threads per inch) for 1-1/8″ diameter and larger.

FULLY THREADED STUD BOLT
TYPE OF THREAD:UNC, 8 TPI
TYPE, NUT:HEAVY HEXOGONAL 
DESIGN SPEC, NUT:ASME / ANSI B18.2.2 HEX NUTS
DESIGN SPEC, STUD BOLT: ASME / ANSI B18.2.1 STUD BOLT
DESIGN SPEC, THREAD: ANSI B1.1
THREAD CLASS SYMBOL, NUT:2B
THREAD CLASS SYMBOL, STUD BOLT:2A
Material:ASTM A193 Grade B7 stud bolt
 

ASTM A193 B7 Stud Bolt Chemical Composition %

C	Mn	Si	P	S	Cr	Mo
0.37-0.49	0.65-1.10	0.15-0.35	0.035	0.04	0.75-1.20	0.15-0.25

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 2H Hex Nut Chemical Components %

C	Mn	Ph	S	Si
0.40 min	1	0.04	0.05	0.4

A194 2H Hex Nut Mechanical Properties

Size	TemperingTempFahrenheit	Proof LoadStress, ksi	Hardness
1/4-1 1/2	850	175	248-327
1 1/2-4	850	175	212-327

 

. Strength Grades

DIN 931/933	Grade 4.6, 4.8, 5.6, 5.8, 8.8, 10.9, 12.9
DIN 931/933	SUS 304, 316
ASTM A307	Grade A & B
ASTM A320, A320M	Grade L7, L7M, B8, B8M
ASTM A325, A325M	Grade 8.8
ASTM A490, A490M	Grade 10.9
ASTM A193/A193M	Grade B7, B7M, B8, B8M, B16

ASTM A193 This specification covers alloy steel and stainless steel bolting material for pressure vessels, valves, flanges, and fittings for high temperature or high pressure service, or other special purpose applications

 

ASTM A193 B7	Alloy steel AISI 4140/4142 quenched and tempered

 

. Surface Treatments

We can provide the ASTM A193 B7 stud bolt with 2 ASTM A194 2H nuts,with following different surface treatments

1. Plating
   • Zinc (White / Yellow / Black)
   • Cadmium (White / Yellow / Black)
   • Zinc Nickel
   • ZINC PLATED/BICHROMATE TREATED

1. Galvanising
   • Hot-Dipped Galvanise
   • Mechanical Galvanise

1. Fluorocarbon Coating
   Xylan® / Dupont Coating Systems:
   • Xylar 2
   • Xylan 1070
   • Xylan 1424
2. Customised Coating Systems
   • Zinc + Fluorocarbon / PTFE coated stud bolt
   • Cadmium + Fluorocarbon /PTFE coated stud bolt
   • Zinc Nickel + Fluorocarbon /PTFE coated stud bolt
   • Zinc Plating + Xylan 1424 Blue PTFE coated stud bolt
   • Xylar 2 + Xylan 1070 coated stud bolt
   • stud bolt ZINC PLATED/BICHROMATE TREATED
   • Zinc Yellow Bichromated

Recommended Nuts,Bolts & Washer

Bolt Grade	Nuts	Washers
B7	A194 Grade 2H	F436
B8 Class 1	A194 Grade 8	SS304
B8M Class 1	A194 Grade 8M	SS316
B8 Class 2	A194 Grade 8	SS304
B8M Class 2	A194 Grade 8M	SS316

Heat Treatment; Minimum tempering temperature: 593 degs C.

Uses

A193 B7 stud Bolt and A194 2H nuts for pressure vessels, valves, flanges and fittings for high temperature or high pressure services, or other special purpose applications.

DESCRIPTION	MATERIAL	DIMENSION	RANGE
Inch	Metric
BOLT	STUD BOLT	A193,A320, A437,4449,4453,ISO 898-1	A193,A307,A540, A564	1/4″ ~ 6″	M6-M160
	HEX BOLT	A193,A320,A437,A449,4453,ISO 898-1	ASME B18.2.1 / ANSI B18.2.3.5M	1/4″ ~ 6″	M5-M160

COATING

DESCRIPTION	SPECIFICATION	MATERIAL
HOT-DIP GALVANIZED	ASTM 123, ASTM A153, ISO 10684,ASTM F2329	IRON AND STEEL PRODUCT IRON AND STEEL HARDWARE FASTENERS
ELECTRO-DEPSITER	ASTM B633 , ASTM B766 ISO 2081, ASTM B841	ZINK, CADMIUM , ZN+NI
NON-ELECTRONICALLY ZINK FLAKE	ISO 10683	ZINK
ZINK PHOSPHATE	ASTM F1137, ISO 11408	ZN / MN
PTFE (Poly Tetra Fluoro Ethyene)	XYLAN 1070, 1052, 1014, 1424 XYLAR 2, SERMAGARD 1105/1280	XYLAN

DUPLEX ALLOY

MATERIAL	MATERIAL	ASTM
ALLOY 2205 - DUPLEX 2205	S31803, S32205	A182, A76, A479
ALLOY 2507-25Cr	S32750, S32760	A182, A76, A479

TITAIUM

MATERIAL	UNS	ASTM
TITAIUM Gr. 2/5/7	R50400, R56400, R52400	B348, B265

6%-MOLY

MATERIAL	UNS	ASTM
ALLOY 2205 - DUPLEX 2205	N08925, N08926 , N08367	ASTM B649, A182, A276, A479, B688
ALLOY 2507-25Cr	S31254	A182, A276 , A479

NICKEL ALLOYS

MATERIAL	UNS	ASTM
ASTM A453 Gr 660 Class A/B/C/D	S66286	ASTM B649, A182, A276, A479, B688
HASTELLOY C276	N10276	B574 , B622
INCOLOY A286 / 800 / 800H / 825 / 925	S66286, No8800, N08810, N08825, NO9925	A453 , B407, B408, B564, B423, B425 , B805
MONEL 400 / 5500	N04400, N05500	B164 , B865
INCONEL 625/ 718/ 750	N006625, N07718, N07750	B446, B564 A1014 , B637

STUD BOLT, 2.1/2 IN DIA X 470MM LONG,
FULLY THREADED, C/W 2 HEAVY HEXAGON NUTS,
MATL STUDBOLTS ASTM A193 GRADE B7: NUTS ASTM A194 GRADE 2H,
BOTH ITEMS TO BE ZINC PLATED/BICHROMATE TREATED,
8UN THREADS TO ANSI B1.1 & TOLERANCES TO B1.1 CL 2A FOR STUDBOLTS & ANSI B18.2.2 CL 2B FOR NUTS.
ASTM F2329 Hot Dip Galvanized treatment is a very common requirement for A193 B7 Stud bolts and A194 2H hex nuts.
ASTM F2329 / F2329M - 15, Standard Specification for Zinc Coating, Hot-Dip, Requirements for Application to Carbon and Alloy Steel Bolts, Screws, Washers, Nuts, and Special Threaded Fasteners.

How to order our ASTM A193 B7 stud bolts?

Example#1,

Stud Bolt 1-1/4 Inch Dia X 290mm Lg ASTM A193 B7 with 3 pcs Hex Nuts ASTM A194 GR 2H Hot Dipped Galvanized as per ASTM F2329

Example#2,

A193 B7 STUD BOLT,  3/4 Inch, 90 mm Length,with 2 pcs Hex Nuts ASTM A194 GR 2H XYLAN 1070 BLUE COATED