Nickel Fasteners

Product Overview

Reviewed and maintained by the Engineering Team, Shaanxi Qianyi Tuoda Technology Co., Ltd.

Nickel Fasteners — 镍标准件 / 镍标准件

{nickel_fastener_galling} Nickel fasteners — bolts, studs, nuts and washers — hold a caustic or seawater joint together in the same grade as the flange, so the bolt never becomes the weak link that a stainless fastener would be in that service. We stock Ni200 / Ni201 and Monel 400 fasteners to ASTM F467 / F468 in Baoji, with full mill certificate, and we supply them as a set matched to the {nickel_flange_page} flange and {nickel_fitting_forming} fittings. This guide covers which grade, which standard, the galling reality, where fasteners fail, and how to write an RFQ that returns a usable quote.

The reason a product guide beats a catalogue is simple: the seven nickel families (tube, plate, bar, wire, fittings, flange, fasteners) are not independent. A caustic line is plate shells, tube bundles, bar-made flanges and B366 fittings from one grade system — specifying them consistently is what keeps a plant leak-free for decades. Below, this product gets its own section, then the shared failure map and one selection rule. For the other six families see our nickel products hub nickel products hub.

At a Glance: Nickel Fasteners

1. What 镍标准件 / 镍标准件 Actually Is (and Why Buyers Confuse It)

Nickel fasteners are bolts, studs, nuts and washers in commercially pure nickel (Ni200 / Ni201) or Monel 400, made to ASTM F468 (headed fasteners) and F467 (nuts and washers). They keep a corrosive joint in one grade end to end. As with every nickel form, the grade — not the word “nickel” — decides the service, and the fastener must match the {nickel_flange_page} flange and {nickel_tubes} tube it clamps.

2. Grade Quick-Reference — Ni200, Ni201, Monel 400

For the full nickel-family picture — Inconel, Hastelloy, Monel side by side — see our our nickel alloy guide. For the Ni200-vs-Ni201 caustic decision, see this comparison. If you also run titanium lines, our titanium titanium guide explains where each metal owns the service.

3. How to Read a Nickel Fasteners RFQ

A usable quote starts with a usable request. Put these on the enquiry so we return price and lead time instead of questions:

• Grade — Ni200, Ni201 or Monel 400 (K500 for strength).
• Spec — ASTM F468 (bolt/stud), F467 (nut/washer).
• Type — bolt, stud, nut, washer, screw.
• Size — thread, length, quantity.
• Finish — as-forged, machined, passivated.
• Certificate — EN 10204 3.1 MTC.
• Service — medium, temperature, tension.
• Packing — VCI, crate, port.

4. Nickel Fasteners Forms, Sizes & What to Specify

5. Standard & Certification You Receive

Each {nickel_fastener_galling} fastener ships with an EN 10204 3.1 mill test certificate, heat-number traceable to the melt, to ASTM F468 (bolts, studs, screws) or F467 (nuts, washers). Provide the mating thread and length so the set is correct on arrival; we supply nuts and washers of the same grade so you do not mix a Monel bolt with a steel nut — a classic galvanic mistake.

6. The “Nickel Is Just Expensive Steel” Myth

The trap is two-fold: treating nickel fasteners like steel, and ignoring galling. Nickel and Monel {nickel_fastener_galling} gall — threads can seize and the head can twist off on teardown without anti-seize, so a torque chart copied from a steel manual is dangerous. And as always the grade decides the medium: Ni200 in hot caustic embrittles, Monel is the wrong bolt for oxidising acid or mercury. Use the right grade and a proper torque, not steel values, and pair bolt, nut and washer from one grade.

7. Where Nickel Fasteners DOES Fail — Limitation & Failure Conditions

Fastener limits follow the alloy, not the thread. The same limitation table applies to every nickel product form — read it before you specify. Add one fastener-specific note: control galling with anti-seize and a nickel-specific torque chart.

Two joint-specific notes. Pick the gasket for the actual medium, and avoid coupling nickel directly to a much nobler metal (graphite, platinum, passive titanium in oxidising service) without isolation — nickel can become the anode. Where the service is oxidising or mixed acid, step to Hastelloy C-276 or titanium rather than pushing nickel past its limit.

8. Choose by Service, Not by Habit

Choose this if:

• Caustic / alkaline joints → Ni200 / Ni201 ({ni200_vs_ni201}).
• High-temperature caustic above ~315°C → Ni201.
• Cost-sensitive hardware → Ni200 / Ni201.

Choose that if:

• Seawater or HF joints → Monel 400 ({monel400_pump}).
• Brine, desalination fasteners → Monel 400.
• Need strength plus corrosion → Monel K500 ({monel_k500_vs_400}).
• Oxidising or mixed acid → step to Hastelloy C-276, not nickel.

9. Common Procurement Mistakes

• Using steel torque on nickel bolts — over-tension or galling.
• No anti-seize on Monel threads — seizing on teardown.
• Ni200 in hot caustic — graphite embrittlement; use Ni201.
• Monel bolts in oxidising acid or mercury — exclusion.
• Mismatched nut/bolt grade — galvanic or galling failure.

10. Lead Time, MOQ & Export Packing

{nickel_fastener_galling} Ni200 / Ni201 and Monel 400 fasteners are stocked in Baoji in common sizes, with non-standard and K500 in a few weeks. Small MOQ applies — a small box is a normal order, and we kit bolt, nut and washer as a set so the joint stays one grade.

11. Nickel vs the Alternatives — When NOT to Specify Nickel

12. Welding & Joining Note

Nickel and Monel weld readily by GTAW / GMAW / SMAW with the correct filler — ERNi-1 ERNi-1 for pure nickel, ENiCu-7 for Monel — but the stubborn NiO oxide must be cleaned first or fusion fails, and welding wire must be kept dry to avoid porosity. For tube and pipe we follow a qualified WPS WPS with argon back-purge; for bar and plate we supply the matching wire and forming notes so the weld stays in grade. Always confirm the filler matches the base grade on the RFQ.

13. Reading the Mill Test Certificate

Every lot ships with an EN 10204 3.1 EN 10204 3.1 MTC: grade and UNS, heat number, chemistry, tensile result, and the ASTM specification. Keep the heat number — it is your traceability link from the finished part back to the melt, and it is what lets an auditor confirm the grade years later. For project work ask for PMI or UT on the order so the certificate matches the actual piece.

14. Why a Baoji Titanium-Valley Stockist

We hold nickel and titanium together in Baoji Baoji, close to China’s Titanium Valley supply base, which means we can cut, forge and kit a mixed nickel line from one shipment instead of chasing several mills. That shortens lead time from mill-weeks to days and keeps one grade logic, one certificate pack, and one point of contact for your whole order. Our nickel buying buying guide explains the stock-holder model for overseas buyers.

15. A 5-Minute RFQ Template

Copy this into your enquiry and fill the blanks — it returns a quote, not a guessing game:

• Product: Nickel Fasteners, grade ___
• Spec: ___ (ASTM / ASME)
• Size: ___ ; quantity ___
• Condition / finish: ___
• Certificate: EN 10204 3.1, UT/PMT if needed
• Service: medium ___, concentration ___, temperature ___, pressure ___
• Destination & packing: port ___, VCI / crate

Email it to [email protected] — we confirm stock and pricing within 24 hours, and can kit the whole line from one Baoji shipment so grade and certificate stay consistent end to end.

16. FAQ — Nickel Fasteners

Ni200 or Ni201 fastener for hot caustic?

For caustic above about 315 degC use Ni201 to avoid graphite embrittlement of Ni200; Ni200 suits lower-temperature alkaline duty.

Do nickel bolts gall, and how do I stop it?

Yes. Without anti-seize the threads can seize and the head twist off on teardown. Use proper paste and a nickel-specific torque chart, not steel values.

Monel 400 or K500 fasteners for seawater?

Monel 400 for general seawater corrosion duty; Monel K500 where you also need high strength (shafts, high-pressure bolting). Both resist chloride cracking where stainless fails.

Why did my Monel bolt fail?

Usually oxidising acid, mercury contact, or galling from missing anti-seize / wrong torque. Review the limitation table before reordering.

What certificate comes with fasteners?

EN 10204 3.1 mill test certificate, heat-number traceable to the melt, to ASTM F468 / F467.

Do you export worldwide?

Yes. Baoji stock to global ports, VCI-packed, with full MTC and shipping documents.

Can fasteners be kitted with flange and fittings?

Yes. We kit a consistent line (Ni201 or Monel flange, B366 fittings, F467/F468 fasteners) from one shipment so grade and certificate match.

Summary: One Rule Beats a Catalogue

If you take one thing from this guide, take this: specify the grade for the fluid, not just the word “nickel,” and treat every joint as a system. Ni200 / Ni201 for caustic and reducing service (Ni201 above ~315°C), Monel 400 for seawater, brine and hydrofluoric acid — and never nickel in oxidising acid, mercury, or wet chlorine. Send the checklist above to [email protected] or use the inquiry form — we confirm stock and pricing within 24 hours, and can kit plate, tube, bar, wire, fittings, flange and fasteners for your whole line from one Baoji shipment.