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Better Fastener Industry Co., Ltd. is a China-based fastener manufacturer producing Slotted Screws alongside bolts, nuts and washers. Our slotted range covers round, pan, countersunk, oval countersunk, fillister, socket cap and heavy hex head forms in carbon steel and stainless steel, built to DIN, ISO and ASME dimensional standards.
The range serves furniture and door hardware, decorative panel fixing, plumbing accessories, electrical enclosures, legacy equipment maintenance and general light-duty assembly, where a single straight slot and universal flat-blade access are the practical choice.
Our Slotted Screw Range
We produce slotted screws as a defined product family rather than a single stock item. Head geometry, drive slot width, thread form, point type and finish are selected against the joint design, the driving method and the corrosion exposure of the finished assembly.
| Head Form | Reference Standard | Typical Fit |
|---|---|---|
| Round head | ASME/ANSI B18.6.2 (T2):1998; ASME B18.6.3 (H7A):2024 | Proud head above the surface, light sheet and hardware fixing |
| Pan head | DIN 85:1988; ASME/ANSI B18.6.3:2010 | Wider bearing face, brackets, covers and panel hardware |
| Countersunk head | DIN 963:1990; ASME/ANSI B18.6.3:2010 | Flush seating in a matching countersink |
| Oval countersunk head | DIN 964:1990; ASME/ANSI B18.6.3:2010 | Decorative flush fixing with a slightly domed profile |
| Fillister / socket cap | ASME/ANSI B18.6.3 (T21):2010; DIN 84:1990 | Recessed or deep heads in confined counterbores |
| Heavy hex head | ASME B18.6.3 (H9A):2024 | Higher bearing load with slot or wrench drive |
| Slotted screw, general | DIN 427:1986 | General mechanical and maintenance fixing |
Where Slotted Drive Fits Best
The open slot lets a flat-blade driver disengage under overload, which limits damage to soft substrates and thin decorative panels. That behaviour suits low-torque joints, field service work and installations where a single tool must cover many fastener sizes.
- Wooden furniture, cabinet and door and window hardware
- Decorative panels, trim and visible fixing where a traditional head profile is required
- Plumbing accessories, sanitary fittings and enclosure covers
- Heritage and legacy equipment maintenance where original drive format must be matched
- Electrical and control boxes, signage and light bracketry
For high-torque structural joints, our Hexagon Head Bolts and Hexagon Flange Bolts provide the wrenching geometry and clamp load that a slotted head is not designed to carry.
Materials and Surface Finishes
We manufacture slotted screws in carbon steel and stainless steel, with low-alloy steel available where mechanical property requirements call for it. Material selection follows the corrosion class of the installation and the required tensile behaviour.
- Carbon steel — general assembly, plated for indoor and sheltered service
- Stainless steel — wet, humid and wash-down environments, visible fixings
- Zinc plating — standard corrosion protection for indoor hardware
- Nickel plating — decorative appearance with wear resistance on the head
- Blackening — dark finish for visible and legacy-matched fixings
- Hot-dip galvanizing — heavier coating for outdoor and industrial exposure
Critical Specifications We Confirm
Slot width and depth, head diameter and height, thread diameter and pitch, thread length and point form are the variables that decide whether a slotted screw seats correctly and drives without cam-out. We confirm each against the drawing or the referenced standard before production.
Dimensional control points
- Slot width and slot depth relative to head height
- Head diameter, head height and bearing face flatness
- Countersink angle for flush-seating head forms
- Thread diameter, pitch and gauge tolerance
- Thread length, shank length and point geometry
- Coating thickness and appearance after plating
Quality Control and Acceptance
Production runs under total quality management with inspection after each process stage, and finished goods are inspected against the customer's requirements and the referenced international standard. Our laboratory equipment includes a spectrometer, CMM, X-ray flaw detector and mechanical testing instruments, covering chemical composition, mechanical properties, non-destructive testing and geometric dimensions.
Inspection records, dimensional reports and material certificates are prepared to the agreed scope so incoming inspection at your plant can be planned against a known document set.
Customization and Related Fasteners
Custom development is our core business. We produce to drawings or samples, including non-standard head profiles, special slot widths, alternative thread lengths and specified finishes. Because we also manufacture the mating components, a slotted screw program can be consolidated with the rest of the bill of materials.
- Hexagon Nuts and lock nuts for the matching thread
- Washers, spring washers and sealing washers from our own production
- Bolts, studs and thread rods for the same assembly
Packing, Documentation and Delivery
Screws are supplied in bulk cartons, retail-ready kits, blister packs or custom boxes depending on the sales channel, with export cartons built for sea freight. Our location is within a short drive of Shanghai and Ningbo ports, and we arrange sea freight as standard with air freight for urgent requirements.
Shipment documentation, packing lists and inspection documents are issued with the order. Trade terms such as FOB and CIF are confirmed at quotation stage.
Information We Use to Configure Your Solution
A workable quotation for slotted screws depends on a small set of inputs. Providing these with your enquiry lets us confirm the standard, the tooling and the packing in one pass.
| Input | What It Determines |
|---|---|
| Head form and standard reference | Dimensional envelope, slot geometry, seating method |
| Diameter, pitch and length | Thread rolling tooling and blank size |
| Material and property class | Raw material grade and heat treatment route |
| Finish and corrosion exposure | Plating or blackening process and coating thickness |
| Annual volume and release schedule | Batch planning and delivery phasing |
| Packing format and labelling | Carton, kit or retail packaging configuration |
| Inspection and document scope | Test plan, reports and certificate set |
Frequently Asked Questions
Which standards do you produce slotted screws to?
Our slotted range covers DIN 84, DIN 85, DIN 427, DIN 963 and DIN 964, together with ASME/ANSI B18.6.2 (T2):1998 and ASME B18.6.3 head forms including T21, H7A and H9A. Where a drawing references an equivalent ISO specification, we produce to the drawing dimensions.
Can you supply slotted screws in stainless steel?
Yes. We manufacture in carbon steel and stainless steel, and select the grade according to the corrosion class of the application. Stainless is normally specified for humid, wash-down or visible fixing positions, while plated carbon steel covers sheltered indoor assembly.
Do you make non-standard head or slot dimensions?
Custom development is our core business. We produce from drawings or samples, including special head profiles, slot widths, thread lengths and finishes. Send the drawing or a physical sample and we will confirm the tooling and the production route.
What inspection documents come with a slotted screw order?
Finished products are inspected against customer requirements and the referenced standard, and we issue the inspection and material documentation agreed at order stage. Our laboratory covers chemical composition, mechanical properties, non-destructive testing and dimensional measurement.
How are slotted screws packed for export?
We supply bulk cartons, retail kits, blister packs and custom boxes, with export cartons suited to sea freight. Packing format and labelling are confirmed with the order so the goods arrive ready for your distribution channel.
Can slotted screws be consolidated with other fasteners in one shipment?
Yes. As a fastener manufacturer we produce bolts, nuts and washers in the same facilities, so slotted screws can be combined with mating nuts, washers and bolts in a single supply program and shipped together.
