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Product
Stainless Steel Torx Recessed Bugle Head Half Thread Self Tapping Screws
Material: Stainless steel 304
Finish: Plain
Standard: ISO14581
Certification: ISO9001
MOQ:1000PCS
Samples: Free
Place of Origin: Zhejiang China
Product Details
Product Description
Key Features
Specifications
Installation Tips
Bugle head self tapping screws
Description:
| Standard: |
ISO14581 |
| Size: | ST2.9-6.3 |
| Material: | Stainless steel |
| Grade: | A2-70 A4-80 |
| Thread: | Metric |
| Finish: | Plain,Nickel, Chrome |
| Packing: | Box+Cartons+wood Pallet or according to customer special demand |
| Application: | Structural Steel; Metal Buliding; Oil&Gas; Tower&Pole; Wind Energy; Mechanical Machine; Automobile: Home Decorating |
| Trade Term: | FOB/CIF/CFR/CNF/EXW/DDU/DDP |
| Payment | T/T, L/C |
| Market: | South&north Amrica/Europe/East&South east Asia/ Australia and ect. |
| Our advantage: | One-stop shopping; |
| High quality; | |
| Competitive price; | |
| Timely delivery; | |
| Technical support; | |
| Supply Material and Test Reports; |
| 304 Chemical Composition(%) | ||||||||
| Grade | C≤ | Mn≤ | Si≤ | S≤ | P≤ | Cr | Ni | N≤ |
| 0.08 | 2 | 0.75 | 0.03 | 0.045 | 18.0-20.0 | 8.0-10.5 | 0.1 | |
| 304 Mechanical property | |||
| σb≥ | σ0.2≥ | δ5 (%)≥ | Hardness(HB)(kgf/mm2)] |
| 520(Mpa) | 205(Mpa) | 40% | ≤187 HRB≤90 HV ≤200 |
Packaging & Shipping
Standard export packing or According to customer's requirement
Our Services
1.We,ll always be online whenever you look for us.
2..The customer is god, and we always focus on the customer's point of view
3.We produce your order strictly by your request. If the quality was not acceptable, we will refund to you.
FAQ
Q:What is your main products?
A:Fasteners, Bolt, nut, screws, washer, threaded rod, anchors, self tapping screws, self driling screws, stainless steel plate, etc.
Q: What is your delivery time?
A:It depends on if we have stock or not, if we have stock goods, we can delivery within 2 days after receive the payment. And normally our production is in 20-30 days for one container (20-26 ton) products.
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Material: Case-hardened carbon steel (CHQ 1022A) – core hardness 320-420 HV, surface 0.15 mm carburized for superior thread strength.
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Finish: Mirror nickel plating 8-12 µm; 48 h neutral salt-spray to white-rust, 96 h to red-rust (ASTM B117).
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Drive: Cylindrical hex socket (DIN 912/ISO 4762 style) – eliminates cam-out, accepts standard Allen keys or hex bits.
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Head: Cylindrical pan or countersunk options; head diameter 2×nominal thread for large bearing surface.
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Thread: Sharp Type-B (sheet-metal) or Type-C (plastic/wood) self-tapping flute; cuts its own mating thread in 0.8–3 mm substrates.
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Point: 45° cutting gimlet point for fast start, reduced splitting and low drive torque.
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Temperature Range: –40 °C to +120 °C; nickel layer remains bright up to 150 °C.
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Reusable: Threads stay intact after 15+ removal cycles in steel or aluminum.
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Diameter: ST2.9 (4#) – ST6.3 (14#) / M3 – M6
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Length: 6 mm – 80 mm (1/4" – 3-1/8")
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Head Styles: Pan head, CSK 90°, wafer head, hex flange (custom)
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Standard: DIN 7504 / ISO 1487 (self-tapping) + DIN 912 head geometry
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Drive Size: 1.5 mm – 5 mm hex (matching table on tech sheet)
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Certifications: RoHS, REACH, SGS salt-spray report provided.
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Use high-quality hex bit (HRC 58+) for longest life.
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Pilot hole: 0.8 × root diameter for metal; none needed for softwood.
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Drive at low-medium speed; nickel finish acts as micro-lubricant—no additional oil required.
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Avoid power-impact drivers on CSK heads to prevent plating flake.
