Other Screws Manufacturers

Better Fastener Industry Co., Ltd. is an Other Screws manufacturer working at the non-standard end of the threaded fastener family. Our specialty screw range covers miniature, high-temperature and fully non-standard configurations for aerospace, medical devices, intelligent systems and extreme-environment machinery, where catalogue products do not fit. Founded in 2001 as a washer factory and expanded in 2010 into a comprehensive fastener enterprise, we now produce washers, nuts, bolts and studs and specialty screws through integrated in-house facilities, with an annual output exceeding 20,000 tons.

What Our Other Screws Range Covers

Other Screws is our production category for threaded fasteners that sit outside the mainstream slotted, Phillips, hexagon socket, Torx, set, tapping, rolling, drilling and wood screw lines. Orders arrive as controlled drawings, physical samples or a standard reference plus agreed modifications, and we manufacture to the specified dimensions, material grade and surface finish.

Standard Profiles We Manufacture to Drawing

The reference list below covers specialty profiles we produce repeatedly. Each item is manufactured to the dimensional envelope of the named standard and can be modified in length, point, drive or material where the joint calls for it.

Application Fit Across Our Production Programme

Specialty screws leave our works alongside hexagon head bolts, nuts and washers for rail transportation, automotive manufacturing, construction machinery, mining and agricultural equipment, shipbuilding, petrochemicals, building and furniture hardware, and power accessories. The specialty range carries the same documentation discipline as these volume lines.

• Instrumentation and optics: M0.5 and above, tight head concentricity, burr-free threads for clean-room assembly.
• Thermal and chemical plant: A4 stainless, Inconel and titanium grades for furnace doors, ducting and reactor access panels.
• Security and utility hardware: triangular, anti-tamper and permanent-installation heads for panels and metering enclosures.
• Mobile and off-highway equipment: application-specific points, shanks and coatings matched to vibration and wash-down exposure.

Materials, Finishes and Corrosion Control

We produce fasteners in carbon steel, stainless steel and low-alloy steel, and buy in the higher alloy grades required by specialty screw designs. Material selection is fixed against the service condition rather than the catalogue default.

• Carbon and low-alloy steel: property classes matched to the required tensile and torque values.
• Stainless steel: A2 and A4 families, with A4 selected for chloride-bearing or wet service.
• Nickel and titanium alloys: Inconel and titanium for high-temperature, oxidizing or weight-critical joints.
• Finishes: zinc plating including coloured zinc, hot-dip galvanizing and blackening, applied according to the corrosion class and the mating component.

Critical Specifications We Confirm Before Production

Non-standard screws fail on small details, so the specification review covers the full joint rather than the screw alone:

• Nominal diameter, pitch, thread tolerance class and thread length, including partially threaded and reduced shank versions.
• Length datum, point style and dog point or pilot dimensions.
• Head profile, across-flats or across-corners, head height, countersink angle and drive recess depth.
• Material grade, heat-treatment condition, hardness range and mechanical property requirements.
• Coating thickness, appearance class and any restriction on hydrogen embrittlement risk for high-strength parts.
• Feeding and assembly constraints, such as vibratory bowl orientation or automated driver engagement depth.

Quality Control and Acceptance

Production runs under total quality management with inspection after each process step, and every finished part passes a final inspection against customer requirements and the applicable international standard. Our in-house laboratory is equipped with a spectrometer, coordinate measuring machine and X-ray flaw detector, covering chemical composition, mechanical properties, non-destructive testing and geometric dimensions. Dimensional inspection records and compliance documentation are issued with specialty screw orders on request, and our quality system is certified to ISO 9001.

Customization and Engineering Support

Customized production is our core business. We develop and manufacture from the drawings or samples you provide, with more than ten engineers and over fifty technical professionals supporting tooling design, forming, thread rolling, heat treatment and secondary machining of non-standard heads. Our process base includes twelve energy-efficient production lines with one fully automatic shell moulding line and four heat-treatment lines, so we can hold both large-volume programmes and small and medium batch purchases.

Information We Use to Configure Your Solution

A specialty screw quotation is prepared from the working point, material and production target. Please include the following when sending an enquiry:

• A dimensioned drawing or a physical sample with the critical tolerances marked.
• Material grade, service temperature, atmosphere and any corrosive media the joint contacts.
• Drive, head and anti-tamper requirements, plus the assembly tool to be used.
• Surface finish or coating specification and the corrosion class expected.
• Quantity per unit, annual volume and whether the part is a new programme or a repeat order.
• Packaging format, labelling and the delivery point or Incoterm.

Packaging, Logistics and Delivery Scope

We supply retail kits, blister packs, custom boxes and export cartons for every sales channel, so specialty screws can ship in the same presentation as the rest of a project's fastener package. Our location is 35 km from Shanghai Port and Ningbo Port, with sea freight as the standard mode and air freight available for urgent deliveries. DDP delivery direct to your door is available, and regular orders are typically confirmed with a 30% deposit and the balance against the bill of lading copy, by T/T or negotiated L/C.

Frequently Asked Questions

How small can you manufacture in the Other Screws range?

Our specialty range starts at ultra-small metric screws from M0.5, produced for micro-assembly in medical instruments, optical systems and microelectronics. Below that range we review the drawing individually, because thread rolling and head forming limits depend on the shank length, head profile and material you specify.

Can you produce to our drawing instead of a DIN or ASME standard?

Yes. Customized production from drawings or samples is our core business, including non-standard head profiles, drive systems and shank geometries that no published standard covers. Send the controlled drawing or a sample and we confirm manufacturability, tooling and the inspection plan before quoting.

Which grades do you recommend for high-temperature or corrosive service?

Stainless A4, Inconel and titanium are the options we offer where elevated temperature, oxidizing atmospheres or corrosive media would degrade a standard grade. The final choice is fixed against the actual service temperature, atmosphere and mechanical load rather than by grade name alone.

What inspection documentation accompanies a specialty screw order?

Our in-house laboratory covers chemical composition by spectrometer, mechanical properties, non-destructive testing by X-ray flaw detector and geometric dimensions by CMM. Every finished part passes final inspection, and dimensional inspection records and compliance documentation are issued on request.

Can specialty screws be combined with bolts, nuts and washers on one order?

Yes. We consolidate screws, bolts, nuts, washers and other fasteners into a single shipment under one-stop product, packaging and logistics services, which reduces the number of incoming inspections and delivery points a project has to manage.