ASTM A194
Grade 8MNA
Stainless Steel Nuts
Understanding Grade 8MNA vs Grade 8MLNA
Grade 8MNA carries forward the exact same positioning question we raise on our Grade 8MN page — it reads as molybdenum for chloride resistance plus nitrogen for elevated proof load, now with cold working added, but without the “L” that would specifically signal the low-carbon weld-decay control present in our well-established Grade 8MLNA.
If that reading is accurate, Grade 8MNA would suit a buyer whose actual concern is chloride resistance and maximum available strength, but who isn’t dealing with a critical-weld sensitization risk — sparing the low-carbon control that Grade 8MLNA specifically adds for that purpose. Being direct: confirming the exact carbon content specified for 8MN and 8MNA under the current ASTM A194 standard is worth verifying against the governing text rather than assuming from the letter pattern alone, the same caution we apply to Grade 8MN.
The molybdenum, nitrogen, and cold-working mechanisms themselves are solid — each is a well-established, independently verifiable strengthening or corrosion-resistance mechanism covered confidently elsewhere on our site. It’s specifically the precise carbon-content distinction between the 8MN/8MNA and 8MLN/8MLNA families that we’d rather confirm than guess at.
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 8MNA, like Grade 8MN, is a less commonly specified designation than our core Grade 8M and 8MLN/8MLNA family, and published reference material precisely distinguishing its carbon content and base alloy from 8MLNA is genuinely limited. 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 the precise distinction from 8MLNA and manufacturability accurately.
Where This Grade Genuinely Applies
Genuine Chloride Resistance
Molybdenum content delivers real resistance to chloride-driven pitting and crevice corrosion.
Genuine Combined Strength
Nitrogen and cold working stack additively for the highest proof load in this grade line.
Correct Default Pairing With B8MNA Studs
Matched material and mechanical properties for straightforward assembly compatibility.
Verified Against Your Governing Document
We manufacture to the composition and property requirements you provide, confirmed before production.
Choosing Between Related Molybdenum-Bearing Nuts
Grade 8MN
Same molybdenum-plus-nitrogen combination as this page, without the added strength from cold working.
View Grade 8MN →Grade 8MNA (This Page)
Molybdenum, nitrogen, and cold working combined — exact carbon content confirmed per governing document.
You Are HereGrade 8MLNA
Our well-established combination adding low-carbon weld-decay resistance to this same molybdenum-nitrogen base.
View Grade 8MLNA →Grade 8MNA Specification Approach
Shared Elements With Grade 8MN
- Base Type Molybdenum-Bearing Austenitic
- Molybdenum ~2–3%, Genuine Chloride Resistance
- Nitrogen Deliberate Strengthening Addition
- Carbon Level Confirmed vs 8MLNA
What Makes This Grade Different
- Condition Strain Hardened
- Proof Load Highest in This Grade Line
- Matching Bolt ASTM A193 Grade B8MNA
- Mechanical Properties Confirmed Per Order
Our Order Process for Grade 8MNA
- 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 8MNA 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 8MN
Our annealed baseline variant of this same molybdenum-nitrogen combination, without cold working.
View Grade 8MN →ASTM A194 Grade 8MLNA
Our well-established combined low-carbon and nitrogen-strengthened family, based on 316LN.
View Grade 8MLNA →ASTM A194 Grade 8A
Our strain-hardened alternative route to higher strength, via cold working alone, without molybdenum.
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