English 
Español 
عربى 
Better Fastener Industry Co., Ltd., one of China's Custom Other Bolts Manufacturers, produces Other Bolts for irregular, asymmetric and application-specific fastening points that standard bolt families cannot cover. Our specialty bolt range supports custom machinery, medical devices, aerospace structures and non-standard industrial assemblies, with production through cold forging, hot forging or machining.
As a China fastener manufacturer and supplier, we work from engineering drawings, samples or dimensional references, then confirm material, head form, shank geometry, thread configuration, surface treatment and inspection requirements before batch production. The range includes DIN 580:2024 eye screws and ASME/ANSI B18.15:1985 Type 1 eye screws, with further configurations built around the load path and installation conditions of each project.
Specialty Bolt Range and Application Fit
Our Other Bolts category covers fasteners that fall outside standard product families: specialty head forms, non-standard shank geometries, asymmetric bodies and thread configurations developed for a specific assembly. We produce these parts in carbon steel, stainless steel, low-alloy steel, titanium, Inconel and duplex stainless grades, depending on temperature, corrosion exposure and weight sensitivity.
Typical applications include precision optical instruments, high-temperature furnace equipment, aerospace structures, medical devices and custom engineering assemblies where the bolt follows a defined load path rather than a catalog envelope. Where a project needs a standard family instead, our Bolts range covers hexagon head, flange, carriage, countersunk, square head, T-head, U-bolt, foundation, wheel and stud configurations.
Product Range at a Glance
| Product type | Configuration focus | Typical fit |
|---|---|---|
| DIN 580:2024 eye screw | Forged eye, metric thread, lifting and anchoring duty | Lifting points, rigging, machinery handling |
| ASME/ANSI B18.15:1985 Type 1 eye screw | Inch-series eye bolt geometry, UNC/UNF thread | North American lifting and suspension assemblies |
| Asymmetric and irregular bolts | Non-standard head, offset shank, stepped diameter | Custom machinery, optical instruments, special fixtures |
| High-temperature and corrosion-resistant bolts | Titanium, Inconel, duplex stainless grades | Furnace equipment, aerospace, chemical exposure |
| Application-specific threaded parts | Thread form, pitch, length and tolerance to drawing | Medical devices, instrumentation, prototype builds |
Materials and Critical Specifications
Material selection drives strength, corrosion resistance, temperature capability and weight. We confirm the grade against the service environment before quoting, and we match thread tolerance, shank diameter and head geometry to the mating component rather than assuming a standard fit.
- Carbon and low-alloy steel: general structural duty, with property class and surface treatment matched to the application.
- Stainless steel: corrosion resistance for outdoor, marine and process environments.
- Titanium: weight-sensitive assemblies where strength-to-weight ratio matters.
- Inconel and duplex stainless: elevated temperature, aggressive corrosion or combined thermal and mechanical loading.
- Thread and geometry: metric or inch series, coarse or fine pitch, full or partial thread, and non-standard shank profiles to drawing.
Manufacturing Routes and Configuration Options
We select the production route according to geometry, material and quantity. Cold forging suits high-volume parts with consistent form; hot forging handles larger or more complex shapes; machining covers prototypes, low volumes and features that cannot be formed. This flexibility lets our factory produce a single prototype and then scale to batch production without changing the drawing intent.
Head and drive
Specialty head forms, recessed drives, flange or collar features and orientation marks to suit the assembly tool.
Shank and thread
Stepped, reduced or asymmetric shanks; metric or inch threads; coarse or fine pitch; thread length to drawing.
Finish
Plain, zinc plating, hot-dip galvanizing, blackening and other post-treatments selected for the service environment.
Quality Control and Acceptance
Our in-house laboratory uses a spectrometer, CMM, X-ray flaw detector and other testing equipment to monitor chemical composition, mechanical properties, non-destructive testing and geometric dimensions. Inspections are carried out after each process, and finished products undergo final inspection against customer requirements and international standards.
For Other Bolts, acceptance criteria are agreed before production: material certificate, dimensional report, thread gauge results, surface condition and, where required, mechanical or non-destructive testing. We can supply inspection documents with the shipment so the receiving team can verify the batch against the approved drawing.
Installation, Interfaces and Maintenance
Specialty bolts often interface with a machined seat, a threaded insert or a mating bracket, so the installation method is part of the design. We consider wrench access, engagement length, bearing surface and any preload requirement when reviewing the drawing. For eye screws and eye bolts, the load direction and the seating face of the eye are confirmed so the part is used within its intended orientation.
- Thread engagement and mating material are checked to avoid stripping or galling.
- Surface treatment is matched to the mating part to limit galvanic or wear issues.
- Replacement parts are produced to the same approved drawing for maintenance and spares.
- Packaging and labelling follow the agreed export carton or retail kit format.
Information We Use to Configure Your Solution
To prepare a workable proposal for Other Bolts, we need the drawing or sample plus the service conditions. The table below shows the inputs that most directly affect material, process, tooling and inspection.
| Input | Why we need it |
|---|---|
| Drawing, sample or dimensional reference | Defines head form, shank, thread and tolerances |
| Material or performance requirement | Sets grade, strength class and corrosion resistance |
| Service environment | Temperature, chemical exposure and load type |
| Quantity and batch pattern | Determines forging or machining route and tooling |
| Surface treatment and packing | Finish, protection and delivery format |
| Inspection and documentation | Acceptance criteria and certificates to issue |
Related Fastener Families
Where a project uses a mix of specialty and standard fasteners, we consolidate the supply. Matching nuts, such as Hexagon Nuts, are produced to the same thread specification, and other bolt families cover the remaining joints in the assembly.
- Eye Bolts for lifting and anchoring points.
- U-Bolts for pipe, tube and axle clamping.
- Double End Studs for flanged and tapped joints.
Frequently Asked Questions
Can you produce Other Bolts from a sample rather than a drawing?
Yes. We accept samples or dimensional references and reverse-engineer the key dimensions, then confirm the material and performance requirements with you before production. A drawing is preferred for critical tolerances, but a sample is a workable starting point.
Which materials are available for specialty bolts?
Beyond standard carbon and stainless steel, we work with low-alloy steel, titanium, Inconel and duplex stainless grades. The choice depends on temperature, corrosion exposure and weight limits, and we confirm the grade against the service environment.
Do you support both prototype and batch quantities?
We support prototype and batch production across a wide range of quantities. Machining is often used for prototypes and low volumes, while cold or hot forging is selected for larger batches once the design is fixed.
What inspection documents can be supplied with an order?
Depending on the agreed acceptance criteria, we can provide material certificates, dimensional reports, thread gauge results and mechanical or non-destructive test records. Inspection requirements are confirmed before production so the batch is tested to the correct standard.
How are Other Bolts packed for export?
We pack to the agreed format, from bulk export cartons to retail kits, blister packs and custom boxes. Labelling and carton marks follow your instructions so the goods can be received and stored without repacking.
Can you match a specialty bolt with the correct nut?
Yes. As one of the more experienced custom other bolts manufacturers in the region, we produce matching nuts to the same thread specification, including hexagon, flange, lock and slotted types, so the joint is supplied as a complete set rather than separate components.
