SS 321 Eye BoltASTM A193 · DIN 580 · Manufacturer, stockist & exporter, India
AISI 321 · UNS S32100
An SS 321 eye bolt is a bolt with a loop head for lifting or anchoring, made from SS 321 to ASTM A193 B8T. Eye bolts provide lifting points on equipment. Load ratings depend on angle of pull.
- ASTM A193
- DIN 580
- EN 10204 3.1 / 3.2
- Export packing
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
What is an SS 321 Eye Bolt?
- What it is
- A bolt with a loop head for lifting or anchoring
- Material
- ASTM A193 B8T
- Dimensions
- DIN 580 · ASME B18.15
- Grade
- SS 321 · UNS S32100
- Best at
- High-temperature service between 425 and 815 °C
SS 321 Eye Bolt Specification
| Product | SS 321 Eye Bolt |
|---|---|
| Material standard | ASTM A193 B8T |
| Dimensional standard | DIN 580 · ASME B18.15 |
| Sizes | M10 – M64 · ½" – 4" (others on request) |
| Threads | UNC · UN-8 · metric coarse |
| Testing | PMI · dimensional · NDT and IGC on request |
| Documents | EN 10204 3.1 · 3.2 with third-party inspection |
When to Choose an Eye Bolt
Eye bolts provide lifting points on equipment. Load ratings depend on angle of pull.
- Forged eye
- Load-rated
- Metric and inch
More on choosing: Eye bolt guide.
SS 321 Eye Bolt: Why 321 for eye bolts
Eye bolts provide lifting points on equipment. Load ratings depend on angle of pull. In SS 321, the choice usually comes down to the medium and temperature — the rows here are the points buyers check for this exact combination.
| Why this grade | Stainless fasteners resist atmospheric and process corrosion. SS 321 is picked for high-temperature service between 425 and 815 °C. |
|---|---|
| Typical service | Aircraft exhaust — Manifolds, bellows and exhaust systems. |
| Bolting | ASTM A193 B8T studs with A194 8T nuts |
SS 321 Eye Bolt Chemical Composition
| Element | Weight % |
|---|---|
| Chromium | 17.0 – 19.0 |
| Nickel | 9.0 – 12.0 |
| Titanium | 5 × (C + N) min, 0.70 max |
| Carbon | 0.08 max |
| Manganese | 2.00 max |
| Silicon | 0.75 max |
| Nitrogen | 0.10 max |
| Phosphorus | 0.045 max |
SS 321 Eye Bolt Mechanical Properties
| Annealed plate & sheet | Value |
|---|---|
| Tensile strength | 515 MPa · 75 ksi |
| Yield strength 0.2% | 205 MPa · 30 ksi |
| Elongation | 40% |
| Hardness | 217 HB max |
Full chemistry, properties and equivalents are on the SS 321 grade page.
Other SS 321 fasteners
SS 321 Eye Bolts for export
FOB / CIF · Nhava Sheva (JNPT), MumbaiSS 321 Eye Bolt — questions buyers ask
Can eye bolts be loaded at an angle?
Only shouldered eye bolts, and with a reduced rating; follow the load chart.
What nut is used with SS 321 eye bolts?
ASTM A194 8T heavy hex nuts.
Which standard covers SS 321 eye bolts?
The material is ASTM A193 B8T; dimensions follow DIN 580 · ASME B18.15. Always state both on your purchase order, with the edition if your project specifies one.
What decides the price of a SS 321 eye bolt?
The alloy price, the size and dimensions, quantity, and the testing and documents required. Send your list and we quote the same working day.
What documents do you supply?
EN 10204 3.1 mill certificates as standard, 3.2 with third-party inspection on request, plus dimensional and PMI reports.
Sources: the ASTM / ASME specifications named on this page and producer datasheets · Last updated October 2026