SS304/SS316 Stainless Steel Hex Bolt, Nut & Washer Sets
Youjia Metals supplies stainless steel fastening sets for overseas OEM and B2B procurement. This product is an SS304/SS316 stainless steel assembly, not a Grade 12.9 alloy steel bolt kit. Send the complete component specification so material, thread compatibility, and inspection requirements can be confirmed.
Product Components
The gallery shows stainless steel bolt, nut, and washer components from our catalog, not a fixed package quantity. Final component types and quantities are confirmed in the quotation.
Specify the hex bolt, matching nut, flat washer, and any required spring washer. Confirm the component quantity, thread diameter and pitch, bolt length, head dimensions, washer dimensions, nut style, and packaging before ordering. A kit name does not establish a universal component strength or load rating.
Material and Specification
| Material | SS304 / SS316 stainless steel, as confirmed for this product |
|---|---|
| Thread and Length | Specified from your drawing or inquiry; availability confirmed in quotation |
| Property Class | Specify the required stainless steel mechanical property class and supporting documents separately from material grade |
| Head / Component Geometry | Hex head bolt and matching nut / washer dimensions reviewed together |
| Standard | DIN 931 / DIN 933 or ISO 4014 / ISO 4017 reference requests reviewed against the exact bolt design; other component standards specified separately |
| Finish | Specify the required stainless steel finish; any treatment requires technical confirmation |
| Custom Services | Thread pitch, thread length, shank length, head dimensions, head marking, CAD drawing review, and OEM packaging |
Application and Assembly
Inquiries can be reviewed for industrial equipment, machinery, mounting assemblies, and other OEM projects. Structural, vehicle, solar, marine, or lifting applications require their own engineering review, installation requirements, and supporting documents.
Confirm mating threads, joint dimensions, required preload, tightening method, and any locking method. Stainless steel threads can gall; consider lubrication, mating materials, installation speed, and torque requirements. A flat or spring washer does not make a joint automatically vibration-proof.
SS304 and SS316 are not corrosion-proof. Select material and finish against exposure, temperature, load, and maintenance. Do not apply the former 12.9-grade tensile values, alloy steel hardness range, heat-treatment claims, or black oxide specification to this stainless steel kit.
Inspection, Documentation, and Supply
Specify dimensional checks, material identification, mechanical tests, finish checks, sampling, acceptance criteria, traceability, and Material Test Reports. Test scope and document availability are agreed before ordering. Sample schedule, production lead time, stock, shipment, and packaging are confirmed from the specification and quantity.
OEM and Custom Orders
Send your CAD drawing, component list, material, dimensions, thread, finish, quantity, inspection documents, packaging, and destination. Non-standard head dimensions, specialized thread pitches, and custom shank or thread lengths can be reviewed for quotation. Custom requests are not a claim that every combination is stocked.
Frequently Asked Questions
Is this a 12.9-grade alloy steel set?
No. This listing is for SS304/SS316 stainless steel sets. Material and mechanical property class must be confirmed separately.
Can all parts be supplied together?
Provide the bolt, nut, and washer specifications and quantities so the matching assembly can be reviewed.
How do I request a custom set?
Send the drawing, material, thread, component dimensions, finish, quantity, and inspection requirements.
Related Products and Quote
Browse the product catalog, request a quotation, or contact us on WhatsApp.
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