ASTM A194
Grade 8PA
Stainless Steel Nuts
Why 8PA Combines Both Benefits
Grade 8PA is the strain-hardened version of the same Grade 8P logic we cover elsewhere on our site — nitrogen alloying raises proof load through a mechanism entirely separate from cold working, so stacking the two gives a genuinely additive strength gain rather than a diminishing return. This is the identical combined-benefits pattern already established across our Grade 8A, 8MA, and 8NA pages, just applied to the Grade 8P base.
What carries over from our Grade 8P page is the same honest caveat — Grade 8P and 8PA are considerably less commonly specified than our core Grade 8/8M/8C family, and we haven’t verified the exact base alloy composition with full certainty from memory. The nitrogen-strengthening principle itself, and its compatibility with subsequent cold working, is solid, well-established metallurgy. It’s the specific composition figures that we’d rather confirm against your governing ASTM A194 standard than present as settled fact.
If your specification calls out Grade 8PA by name, we’re glad to manufacture to it — we simply ask that you share the governing document alongside your inquiry so we can confirm composition and mechanical property requirements accurately before quoting.
Akbar Fasteners Pvt. Ltd. exports to over 50 countries, and we’re glad to manufacture to this specification once the exact composition and property requirements are confirmed, verified under our ISO 9001:2015 quality system.
An Honest Note on This Specific Grade
Grade 8PA, like Grade 8P, is a considerably less commonly specified designation than our core Grade 8, 8M, and 8C family, and published, detailed reference material on its precise base alloy and proof-load requirements is genuinely more limited than for those widely used grades. We manufacture to this specification when a customer provides the exact composition and property requirements — either from the current ASTM A194 standard text or a project-specific data sheet — rather than relying on general description alone. If you’re specifying this grade, please share the governing document with your inquiry so we can confirm manufacturability accurately.
Where This Grade Genuinely Applies
Genuine Combined Strength
Nitrogen and cold working stack additively, giving the highest proof load in this specific grade line.
Correct Default Pairing With B8PA Studs
Matched material and mechanical properties for straightforward assembly compatibility.
Project-Specific Specification
Typically called out by name on a specific project drawing or governing specification.
Verified Against Your Governing Document
We manufacture to the composition and property requirements you provide, confirmed before production.
Choosing Between Related Nitrogen-Strengthened Grades
Grade 8P
Same nitrogen-alloyed base as this page, without the added strength from cold working.
View Grade 8P →Grade 8PA (This Page)
Grade 8P’s nitrogen alloying plus cold working’s strain hardening — both benefits genuinely combined.
You Are HereGrade 8NA
Our other nitrogen-strengthened, strain-hardened specialty grade — the precise distinction confirmed together.
View Grade 8NA →Grade 8PA Specification Approach
Shared Elements With Grade 8P
- Base Type Austenitic Stainless
- Nitrogen Deliberate Strengthening Addition
- Chromium/Nickel Per Governing Standard
- Composition Identical to Grade 8P
What Makes This Grade Different
- Condition Strain Hardened
- Proof Load Higher Than Grade 8P, Confirmed Per Order
- Matching Bolt ASTM A193 Grade B8PA
- Mechanical Properties Confirmed Per Order
Our Order Process for Grade 8PA
- Step 1 Confirm Governing Document
- Step 2 Verify Composition Limits
- Step 3 Manufacture & Test to Spec
- Step 4 Issue Full Documentation
Standard Export Documentation
Prepared as standard practice once composition and property requirements are confirmed for your order.
Mill Test Certificate (MTC)
Heat number, chemical composition, and mechanical property verification for every lot.
Mechanical Property Report
Confirms actual cold-worked strength meets the specified Grade 8PA proof load requirement.
Certificate of Conformance
Confirms the shipment matches the purchase order specification in full.
Certificate of Origin (COO)
Confirms India as country of manufacture for destination customs purposes.
NABL Accredited Test Reports
Independent mechanical and chemical testing available on request for critical applications.
Commercial Invoice & Packing List
Itemized value, Incoterm, and detailed carton/weight breakdown for customs clearance.
Internationally Recognised Standards Coverage
Related Fastener Grades & Materials
ASTM A194 Grade 8P
Our annealed baseline variant of this same nitrogen-alloyed base, without cold working.
View Grade 8P →ASTM A194 Grade 8NA
Our other nitrogen-strengthened, strain-hardened specialty grade, precise distinction confirmed together.
View Grade 8NA →ASTM A194 Grade 8A
Our strain-hardened alternative route to higher strength, via cold working instead of nitrogen alone.
View Grade 8A →Stainless Steel Fasteners Manufacturer India
Our broader stainless steel fastener manufacturing capability across all major grades.
View SS Manufacturer Guide →Have the Governing
Specification for This Grade?
Share your project standard or the ASTM A194 edition you’re working to, and we’ll confirm manufacturability, composition, and mechanical property alignment before quoting. Akbar Fasteners Pvt. Ltd. responds within 24 hours.
Sales: +91 724 0000 733 · Support: +91 800 9315 333 · sales@akbarfasteners.in