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ASTM A 193 GR. B8 Studs And Bolts

Stainless Steel ASTM A193 Grade B8 (SS 304) Studs & Hex Bolts
1. Product Description (Pointwise)

ASTM A193 Grade B8 fasteners are manufactured from austenitic stainless steel SS 304, intended for high-temperature and high-pressure applications.

These fasteners offer excellent corrosion resistance, good mechanical strength, and reliable performance in moderately aggressive environments.

Supplied as stud bolts, hex bolts, threaded rods, commonly used with ASTM A194 Grade 8 nuts.

Suitable for applications requiring clean, rust-free, and durable bolting solutions.

2. Material Grade & Equivalents
ASTM A193 Grade B8 (SS 304)

AISI: 304

UNS: S30400

ASTM Fastener Standards:

ASTM A193 Grade B8 – Studs & Hex Bolts

ASTM A194 Grade 8 – Nuts

DIN / EN: DIN 1.4301 / EN 10088

ISO: ISO 3506 – A2

3. Product Range

Stud Bolts – Fully threaded

Hex Bolts – Full thread / Half thread

Studs with 2 Nuts & Washers

Cut-length studs as per flange standards

Custom sizes as per drawings, BOQ, or project requirement

4. Washer Dimension Standards
IS Standards

IS 2016 – Plain washers (normal & heavy series)

IS 6649 – Spring lock washers

DIN Standards

DIN 125 – Flat washers

DIN 9021 – Large OD / heavy washers

DIN 127 – Spring washers

ASME Standards

ASME B18.21.1 – Flat washers & helical spring lock washers

(Heavy OD washers are generally used for flange bolting applications.)

5. Applications

Oil & Gas Industry – Piping flanges, skids, refineries

Chemical & Process Plants – Heat exchangers, reactors

Power Plants – Boilers, auxiliary systems

Water Treatment Plants – Pumps, pipelines, equipment mounting

Food & Pharmaceutical Industry – Clean and corrosion-resistant assemblies

General Engineering & Infrastructure

6. Key Advantages of ASTM A193 Grade B8 (SS 304) Fasteners

Good corrosion resistance in industrial and atmospheric environments

Reliable mechanical performance at elevated temperatures

Long service life with low maintenance requirements

7. Why Choose Aanuraj Fasteners Pvt Ltd – 3 Important Advantages

ASTM Fastener Manufacturing Expertise
Specialized in ASTM A193 / A194 stainless steel fasteners for pressure and critical applications.

Strict Quality Control & Traceability
Heat number traceability, lot-wise inspection, dimensional and mechanical testing ensured.

Customization & Project Support
Studs and bolts manufactured as per IS, DIN, ASME, ISO standards or customer drawings with dependable delivery.
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