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JF Engineering Products LLP

ASTM A193 B8 Bolts

ASTM A193 Gr.B8 Bolts, Grade ASTM A193 B8 Stud Bolts, Alloy ASTM A193 B8 Fasteners, ASTM A193 Gr. B8 Fasteners Manufacturer in India.

ASTM A 193 B8 bolts are commonly used for all types of applications. It has an amazing characteristic of holding on to the objects steadily. The grade is manufactured using high-quality raw material and ductile metals. These metals are made by using all the finest elements. 

The combination of ASTM A 193 B8 bolt is made from an excellent combination that includes elements like chromium, nickel, and silicon. The grade includes all these elements in moderate amounts (Chromium: 18 - 20%, Nickel: 8 - 10%, and silicon: 1%) The grade also includes other elements like manganese, carbon, iron, phosphorous, etc. All these elements are added to improvise the stability and strength of the grade. 

ASTM A193 B8 bolt is one of the most famous equipment. It is commonly used for industrial and commercial applications. This grade has high heat bearing and tolerating capacity. The grade ASTM A193 B8 bolts are weldable and they also support pitting. The grade itself is enriched with anti-corrosion properties. 

ASTM A193 B8 bolts include ferritic as well as austenitic microstructures. The grade is a mixture of these two microstructures, which provides excellent malleability and strength. These bolts are manufactured using 304 grade. 

JF Engineering is an astonishing manufacturer, supplier, and exporter of steel products. We manufacture all the products using high-quality raw material and high-end machinery. We provide this equipment in various sizes, shapes, and dimensions.

Technical Specification

Stainless Steel Fasteners Standard ASTM A193 Grade B8
Size M16 - M120
Length UPTO 1200MM
Threads: METRIC, BSW, BSF, UNC, UNF or as required

DIN: DIN 931, DIN 933, DIN 934, DIN 970

UTS – Unified Thread Standard : UNC, UNF, UNEF, UNS, NPT, NPTF

ISO – International Organization for Standardization : ISO 4032, ISO 4033, JIS standards

Packing: canton, pallet, Small Boxs / carton / pallet, or customer request
Chemical Composition
Element Austenitic Stainless Steel
AISI 304 / 304L
CompositionA, %
Carbon 0.08 max
Manganese 2.00
Phosphorus 0.045 max
Sulfur 0.030 max
Silicon 1.00 max
Chromium 18.00 - 20.00
Nickel 8.00 - 11.00
Mechanical Properties
Tensile Class Diameter, Inch Tensile Strength,
min, ksi
Yield Strength,
min, 0.2% offset,
in 4D,
min, %
of Area,
min, %
Class 1A All Sizes 75 30 30 50 223 HBW or 96 HRB

Class 2B,C
3/4 and under 125 100 12 35

321 HBW or 35 HRC
over 3/4 to 1 inclusive 115 80 15 35
over 1 to 1-1/4 inclusive 105 65 20 35
over 1-1/4 to 1-1/2 inclusive 100 50 28 50

Class 2BB
2 and under 95 75 25 40
over to 2-1/2 inclusive 90 65 30 40
over 2-1/2 to 3 inclusive 80 55 30 40

Marking and Packing

Products are packaged to ensure that there is no damage during transit. In case of exports, standard export packaging is done in wooden cases. All pipes are marked with Grade, Lot No, Size, Degree and our trade mark. On special requests we can also, make custom marking on our products.

Quality Assurance

At JF Engineering Products LLP, all fasteners are subject to strict inspection at each stage of the production process, from starting material purchasing to product dispatch. They are visually examined for conformity to ASTM, ASME, MSS, DIN, EN, and JIS codes and standards. Upon request, official certified Inspection Agencies can be called in to witness the material reports, dimensions and quality conformity of products.

Test Certificates

Manufacturer Test Certificate as per EN 10204 / 3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report

Shipping Policy

Delivery time and delivery dates are based on the "type and quantity" of steel ordered. Our sales team will provide a delivery schedule when quoting to you. On rare occasions the delivery schedule may change so please check with our sales department when placing any orders.

Orders will be sent out within 2-3 business days, and may take up to 5-10 business days in transit. If fastener is out of stock, orders may take up to 2-4 weeks to ship. JF Engineering Products LLP will notify buyer if this situation occurs..

Uses & Application

JF Engineering Products LLP take immensure pleasure in introducing itself as one of the leading Manufacturer & Exporter of high quality fasteners to meet the customer ultimate requirements in the fields of:

Chemical Oil Mills Petrochemical Mining Refineries Construction
Fertilizers Shipbuilding Power Plant Steel Plant Nuclear Power Offshore
Oil & Gas Defence Paper Ports Breweries Railway
Cement Engineering Co. Sugar & Government Org. etc.

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