Hex bolts
Partially or fully threaded bolts for structural and general industrial assembly. Property class, thread pitch and length measurement must be specified.
Capability 03 路 Hardware
Industrial hardware and fasteners, specified beyond the part number.
Fasteners look simple until grade, thread, coating or length is wrong. A lower unit price can disappear quickly when a batch fails inspection or does not match the mating component. Our job is to make those variables explicit before quotes are compared.
Overview
The sourcing context.
We support standard and custom hardware requirements across construction, maintenance, OEM and industrial assembly, with documentation and inspection needs built into the sourcing brief.
This page is a capability guide, not a product listing. It explains the common product families, the information a supplier needs and the purchasing questions worth resolving before an order. Specifications vary by model and supplier; all technical data is subject to confirmation upon inquiry.
Product scope
8 families- Bolts
- Nuts
- Screws
- Washers
- Anchor bolts
- Stainless steel fasteners
- Industrial hardware
- Custom metal parts
Property class, thread standard, coating and dimensional standard are part of the product definition. A photo or sample alone may not capture the required performance.
Product families
Common types and what distinguishes them.
Nuts
Hex, nyloc, flange, serrated and heavy-hex nuts in matching grades. Nut grade and coating should be compatible with the bolt and the service environment.
Screws
Machine, self-tapping, self-drilling and socket-head screws. Head style, drive, thread type, point and material all affect fit and performance.
Washers
Flat, spring, serrated and structural washers. Dimensions, hardness and coating need to suit the bolt assembly and bearing surface.
Anchor bolts
Cast-in, wedge, sleeve and chemical anchors for structural and equipment fixing. Base material, load condition and approval requirements matter.
Stainless fasteners
A2-70, A4-80 and other stainless grades for corrosion-conscious environments. Stainless is not automatically suitable for every chloride or high-temperature application.
Custom metal parts
Special bolts, pins, brackets, stamped parts and small assemblies made to drawing. Tooling, tolerances, surface finish and inspection should be agreed up front.
Specifications vary by model and supplier; all technical data is subject to confirmation upon inquiry.
Materials & standards
The details that change the quote.
The ranges below are common industry references, not a statement of stock or supplier capability. The applicable grade, standard and test requirement must be confirmed for the specific inquiry.
- Carbon and alloy steel
- Property classes 4.8, 8.8, 10.9 and 12.9 are common for metric fasteners. ASTM A325, A490, A193 and A194 grades may apply to structural or high-temperature service.
- Stainless steels
- A2 (304 family) and A4 (316 family) are common. Grade, property class and coating or passivation requirements should be stated for the service environment.
- Thread standards
- Metric coarse and fine, UNC, UNF and BSP threads are not interchangeable. Thread standard, pitch, hand and tolerance class need to be confirmed.
- Coatings
- Zinc plating, hot-dip galvanizing, zinc-nickel, Dacromet, PTFE and other coatings. Coating thickness, friction coefficient and hydrogen-embrittlement controls may matter.
- Dimensional standards
- DIN, ISO, ANSI/ASME, JIS and customer-specific drawings can define dimensions differently. Length measurement conventions also vary by product type.
- Inspection and testing
- Dimensional inspection, hardness, tensile testing, coating thickness and salt-spray testing can be requested where specified. Availability depends on the supplier and order.
Applications
Where these products are typically used.
- 01Structural steel and construction
- 02Industrial equipment assembly
- 03Plant maintenance and shutdowns
- 04Automotive and transport equipment
- 05Renewable energy and electrical infrastructure
- 06General OEM and fabrication
Application examples are illustrative. Suitability depends on the complete system design, operating conditions and applicable standards.
Before you buy
Purchasing considerations.
Specify the full grade
“High-strength bolt” is not a specification. State property class, material, thread, coating and the standard or drawing that defines the part.
Check the mating assembly
Bolt, nut and washer grades should be compatible. A 10.9 bolt paired with an unsuitable nut may not deliver the expected joint performance.
Treat coatings as engineering choices
Corrosion protection, friction and hydrogen embrittlement risk vary by coating. For high-strength fasteners, the process controls matter as much as the coating name.
Confirm how length is measured
Length conventions differ between bolt types and standards. A drawing or clear reference avoids a shipment that is dimensionally correct but functionally wrong.
Plan inspection for critical lots
Sampling plans, test reports and traceability should be agreed before production. For safety-critical or structural use, the buyer's engineer should define the acceptance requirements.
How we help
Supplier discovery and quotation coordination.
- 01
Requirement review
Clarify the specification, quantity, destination and documentation needs.
- 02
Supplier shortlist
Identify relevant suppliers and confirm basic fit before requesting offers.
- 03
Comparable quotations
Collect offers on a consistent basis and surface technical or commercial gaps.
- 04
Decision support
Give you a structured view so your team can approve the next step.
FAQs
Common questions about hardware & fasteners.
Can you source fasteners to a drawing?
Yes, for suitable custom parts. We need a dimensioned drawing, material, surface finish, quantity and any inspection requirements. We will confirm feasibility and tooling implications with the supplier.
Do you supply structural bolting?
We can coordinate sourcing of structural bolts and nuts where the standard, grade, coating and certification requirements are clearly defined. The final suitability for the structure remains the buyer's engineering responsibility.
What is the difference between A2 and A4 stainless?
A2 is generally in the 304 stainless family and A4 in the 316 family. A4 offers better resistance in many chloride-bearing environments, but suitability still depends on the specific conditions.
Can you arrange salt-spray or hardness testing?
Testing can be requested in the inquiry. We confirm whether the supplier can provide the test, the applicable method and the documentation before the order is placed.
Do you have a minimum order quantity?
MOQ depends on the item, supplier and production route. Standard fasteners may have lower minimums than custom parts; we will confirm before quoting.
Next step
Need to source hardware & fasteners from China?
Send the product type, specification and quantity. A short description is enough to start; a drawing or data sheet helps us ask better questions.