Self Drilling Screw With Washer
Standard: JIS B 1124
Thread Type: Self-Tapping Screw Thread
Commodity: Self Drilling Screw With Washer
Also Named: Hex Washer Self Drilling Screw
Material: Carbon Steel
Property Class: 4.8-12.9
Diameter: ST2.9、ST3.5、ST4.2、ST4.8、ST5.5、ST6.3
Finish: Plain, Black, Zinc Plated, Hot Dipped Galvanized, Oxidation, Dacromet, Phosphating, Cadmium Electroplate, Nickel Plated
Head Type: Hex Washer Head
Drive Type: External Hex
Point Type: Self Drilling Point
Alternative Standard: ISO 15480、DIN 7504 (K)、JIS B 1124
MOQ: 1000kgs
Lead Time: 30 to 60 days
Product Introduction
AYA Fasteners (Hebei) Co., Ltd. is one of the most experienced manufacturers and suppliers of self drilling screw with washer in China. Please feel free to buy high quality self drilling screw with washer made in China here from our factory. For price consultation, contact us.
High‑Performance Self‑Drilling Screws for Metal‑to‑Metal Fastening
AYA self-drilling screws with washer are designed for fast, reliable metal‑to‑metal fastening without pre‑drilling. The integrated washer distributes load evenly, improves sealing performance, and reduces the risk of surface damage-ideal for structural steel, sheet metal, roofing, and HVAC applications.
Available in standard sizes with full customization options, including dimensions, materials, coatings, and packaging to meet project‑specific requirements.
Description of Self Drilling Screw With Washer
|
Product Name |
Self-Drilling Screw With Washer |
|
Also Named |
Also Named: Hex Washer Self-Drilling Screw |
|
Material |
Carbon Steel |
|
Standard |
JIS B 1124 |
|
Property Class |
4.8-12.9 |
|
Diameter |
ST2.9,ST3.5,ST4.2,ST4.8,ST5.5,ST6.3 |
|
Finish |
Plain, Black Oxide, Zinc Plated, Hot Dipped Galvanized, Oxidation, Dacromet, Phosphating, Cadmium Electroplate, Nickel Plated |
|
Head Type |
Hex Washer Head |
|
Drive Type |
External Hex |
|
Thread Type |
Self-Tapping Screw Thread |
| Point Type |
Self-Drilling Point |
| Alternative Standard | ISO 15480,DIN 7504 (K),JIS B 1124 |
dimensions table
| Nominal Diameter d |
ST2.9 | ST3.5 | ST4.2 | ST4.8 | ST5.5 | ST6.3 | |
| P | Pitch | 1.1 | 1.3 | 1.4 | 1.6 | 1.8 | 1.8 |
| a | max | 1.1 | 1.3 | 1.4 | 1.6 | 1.8 | 1.8 |
| dc | max | 6.3 | 8.3 | 8.8 | 10.5 | 11 | 13.5 |
| min | 5.8 | 7.6 | 8.1 | 9.8 | 10 | 12.2 | |
| c | min | 0.4 | 0.6 | 0.8 | 0.9 | 1 | 1 |
| s | max=nominal size | 4 | 5.5 | 7 | 8 | 8 | 10 |
| min | 3.82 | 5.32 | 6.78 | 7.78 | 7.78 | 9.78 | |
| e | min | 4.28 | 5.96 | 7.59 | 8.71 | 8.71 | 10.95 |
| k | max=nominal size | 2.8 | 3.4 | 4.1 | 4.3 | 5.4 | 5.9 |
| min | 2.5 | 3 | 3.6 | 3.8 | 4.8 | 5.3 | |
| kw | min | 1.3 | 1.5 | 1.8 | 2.2 | 2.7 | 3.1 |
| r | max | 0.4 | 0.5 | 0.6 | 0.7 | 0.8 | 0.9 |
| Drilling range(thickness) | ≥ | 0.7 | 0.7 | 1.75 | 1.75 | 1.75 | 2 |
| ≤ | 1.9 | 2.25 | 3 | 4.4 | 5.25 | 6 | |
Product details
Product advantage
- No Pilot Hole Required-Drill, tap, and fasten in one operation to save assembly time
- Integrated Washer Design-Improved load distribution and vibration resistance
- Strong Holding Power-Consistent clamp force for steel‑to‑steel applications
- Corrosion Protection Options – Suitable for indoor and outdoor environments
- Stable Quality for Mass Production – Engineered for consistent performance
Custom Self‑Drilling Screws With Washer
Standard screws don't always meet real‑world application demands. AYA provides custom self-drilling screw solutions based on:
- Special diameters or lengths
- Modified washer size or thickness
- Specific drilling capacity requirements
- Coating adapted to salt spray or outdoor exposure
- OEM branding & packaging
quality inspection
Packaging & Container Loading
Usage Scenarios
Discuss Your Application With Our Engineers
Why Choose Aya?
- In‑house engineering support for non‑standard designs
- Mature production lines for stable mass manufacturing
- Strict quality control from raw material to final inspection
- Experience serving automotive, construction, and industrial clients worldwide
- Flexible MOQ for custom projects
📈 From drawing review to stable supply, we support your project at every stage.
FAQs
Q: Can you manufacture non‑standard sizes?
A: Yes. We specialize in custom fasteners and can produce according to drawings or samples.
Q: What is your typical lead time?
A: Standard products ship quickly; custom orders depend on specifications and quantity.
Q: Do you provide technical support?
A: Yes. Our engineers assist with material selection, drilling capacity, and application matching.
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