Special alloy fasteners for Semiconductor Manufacturing Equipment.
Chemical-resistant bolts, vented screws and hot-zone fasteners for wet-process, vacuum and thermal equipment.
Which fasteners fit your semiconductor manufacturing equipment applications?
BYBOLT supplies Hastelloy C-22 hex bolts for oxidizing wet-process chemistry, Inconel 601 hex bolts for oxidation-resistant thermal fixtures and 316L socket head screws with drawing-specified venting for vacuum assemblies. Hastelloy C-276 stud bolts resist corrosion at wet-abatement covers. Include the equipment cleaning and packing specification with your drawing.
Fasteners for semiconductor process equipment.
Wet-process auxiliary covers & scrubbers
Small cover screws on wet-process and scrubber auxiliaries can collect condensate inside their drive recesses. C-276 provides a corrosion-resistant option for these compact fastening points. The socket head suits recessed cover mounts, while the assembly layout determines how readily retained liquid can drain or be cleaned away.
Hastelloy C-276 Socket Head Cap ScrewsRelated material guides
Connection requirements
- Tapped-hole size, thread form, and effective engagement depth
- Head diameter, head height, and counterbore clearance required
- Wet chloride exposure, shutdown chemistry, and heat-number certification
Chemical delivery systems (CDS) & VMBs
Hastelloy C-276 socket screws secure covers near chemical-delivery manifolds where process drips and washdown reach recessed fasteners. Corrosion resistance matters inside the drive pocket as well as along the loaded shank. Axial access lets a technician remove the cover between closely packed fittings without needing wrench clearance around each head.
Hastelloy C-276 Socket Head Cap ScrewsRelated material guides
Connection requirements
- Tapped-hole size, thread form, and effective engagement depth
- Head diameter, head height, and socket depth for drive engagement
- Acid and chloride exposure, and heat-number certification
Vacuum & etch chamber structural mounts
Hastelloy C-22 socket screws fasten external etch-system support brackets exposed to corrosive residues and cleaning liquids. They bring mixed-media corrosion resistance to recessed mounting points close to other hardware. These auxiliary mounts combine chemical exposure with restricted access, giving the alloy and head form distinct jobs in the same connection.
Hastelloy C-22 Socket Head Cap ScrewsRelated material guides
Connection requirements
- Tapped-hole size, thread form, and effective engagement depth
- Head diameter, head height, and socket depth for drive engagement
- Exposure chemistry, cycling duty, and heat-number certification
High-purity gas & precursor line flanges
Titanium Gr.2 flange bolts suit clean, dry high-purity gas service, whereas corrosive precursor duty calls for Hastelloy C-276 flange bolting instead. Both selections preserve line purity by resisting attack at exposed flange faces.
Titanium Gr.2 flange boltsConnection requirements
- Flange face finish and gasket seating surface
- Bolt circle alignment and thread engagement
- Clean assembly procedure and contamination control method
Wafer-handling robotics & cleanroom gantries
Titanium Grade 5 socket screws fasten wafer-handler arms and gripper brackets where low moving mass and close component spacing matter. Recessed heads fit the compact mechanism, with axial access around neighbouring parts. The mounting location determines the surface-cleaning and particle-control finish needed before assembly.
Titanium Grade 5 Socket Head Cap ScrewsRelated material guides
Connection requirements
- Cleaning and particle specification
- Axial tool access
- Bracket thread engagement
Sub-fab exhaust & abatement flanges
Abatement flanges can expose nuts to wet, chemically varied exhaust condensate. C-22 provides resistance to this mixed-media environment at the nut's bearing face and internal threads. Regular hex dimensions suit compact flange patterns around crowded sub-fab ductwork and auxiliary pipe connections.
Hastelloy C-22 Hex NutsRelated material guides
Connection requirements
- Mating stud diameter, thread form, and thread class
- Nut height, width across flats, and bearing-face condition required
- Exposure chemistry, cycling duty, and heat-number certification
Wet chemistry, vacuum, and cleanroom control.
C-22 and C-276 offer corrosion-resistant options for wet-process auxiliaries and abatement covers. Choose using the actual acid mixture, oxidizers and temperature; high-purity process contact also needs its own contamination limits, beyond corrosion resistance.
What to specify
- Allowable corrosion rate
- Maximum hydrofluoric-acid exposure level
- Oxidizing versus reducing sequence classification
Vented 316L screws release trapped gas from blind holes in vacuum assemblies. Titanium Grade 2 offers a low-magnetic-response option where needed, but outgassing depends on cleaning, surface condition and trapped volumes rather than alloy name alone.
What to specify
- Maximum allowable outgassing rate
- Magnetic permeability limit
- Particle cleanliness level
Silver-plated A-286 can reduce galling in compatible bake-out joints. Other coatings or dry films need their own temperature, vacuum and contamination acceptance; venting addresses trapped gas, not coating cleanliness.
What to specify
- Maximum bake-out temperature rating
- Galling resistance requirement
- Venting and trapped-gas release rate
Compare semiconductor-equipment fastener alloys.
| Material grade | Mechanical Duty / Focus | Environment | Relative cost | Popular fastener forms |
|---|---|---|---|---|
| Hastelloy C-22UNS N06022Oxidizing media |
| Oxidizing wet-process liquids and abatement condensates | $$$$ |  Hex bolts |
| Inconel 601UNS N06601Oxidation resistance |
| Oxidizing thermal-process zones and heated fixtures | $$$ |  Hex bolts |
| 316L stainless steelUNS S31603Low-carbon stainless |
| Clean vacuum hardware and equipment cooling auxiliaries | $ |  Socket screws |
| Hastelloy C-276UNS N10276Mixed-acid resistance |
| Mixed-acid liquids and wet-abatement condensates | $$$$ |  Stud bolts |
Budget guide: $ lower · $$ moderate · $$$ higher · $$$$ premium. Relative raw-material bands; dimensions, quantity, processing and inspection determine the finished-fastener quote.
Material & cost references
- Haynes International — Chemical processing alloys
- Special Metals — INCONEL alloy 601
- British Stainless Steel Association — Food-processing material selection
- Kurt J. Lesker — Vented vacuum hardware
- Nickel and specialty-alloy round-bar price comparison
- Stainless-steel supplier price ranges
- 800H round-bar supplier price range
- Alloy 20 round-bar supplier price range
Cost bands group overlapping published supplier ranges for initial budgeting; they are not live BYBOLT prices. Specify the exact UNS and final condition on the order.
Chemical-service studs & semiconductor equipment bolts.
Hastelloy C-22 hex bolts
Resist oxidizing chemical attack at wet-process auxiliary joints and equipment covers.
Inconel 601 hex bolts
Resist oxidation and scaling on hot process fixtures through repeated heating cycles.
316L socket head screws
Fit compact vacuum assemblies; drawing-specified vent paths let gas escape from blind threaded holes.
Hastelloy C-276 stud bolts
Resist mixed-acid condensate corrosion at wet-abatement covers that need maintenance access.
Process-equipment service kits.
Order the fasteners for each process module together, including vented geometries and the specified cleaning and packing scope.
Semiconductor-equipment fastener traceability & inspection.
EN 10204 3.1 MTC, heat traceability and mechanical test results with each shipment. Add the tests your equipment specification requires.
Material identity
Match the ordered grade and material heat to the certificate, part identification and packing list.
Final condition
Link the specified processing condition and mechanical results to the finished batch; keep separate heat-treatment batches identifiable.
Drawing dimensions
Part number, datums, thread and vent geometry.
Cleanliness & packaging
Specify particle or residue acceptance, the approved cleaning process and required handling and packing records.
Before you order semiconductor-equipment fasteners.
Send the drawing and the service details for your connection. We can quote the specified parts, finish and inspection package together.
Get a QuoteCan you manufacture vented screws?
Yes. Send the required vent geometry with the screw drawing, thread dimensions and mechanical requirements. Include cleaning, inspection and packaging specifications for the finished part.
How should cleanliness be specified?
Provide the equipment standard or measurable particle/residue limits, permitted cleaning process, handling requirements and packing method. These become part of the quotation and acceptance scope.
What should an abatement-equipment enquiry include?
Identify the gas, any condensate or scrubber liquid, temperatures and cleaning chemicals at the joint. Include the assembly drawing and required material condition.
Send your drawing
or parts list.
Upload the drawing or BOM with its revision. We quote the material, dimensions, quantities and inspection requirements for your equipment.
Equipment part/revision, wet chemistry or vacuum/thermal duty, venting, finish, cleaning/packing requirements and quantity…
