Black Self-Tapping Bolts for Steel & Structural Use | High Tensile

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Black Self-Tapping Bolts – Durable, Corrosion-Resistant, for Metal & Industrial Use​

Black Self-Tapping Bolts – Durable, Corrosion-Resistant, for Metal & Industrial Use​

Black self-tapping bolts for secure fastening in metal. Durable, corrosion-resistant, and ideal for industrial machinery & structural applications.​
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Advantages of Black Self-Tapping Bolts

Time-Saving Installation

Cuts directly into the material, eliminating the need for pre-drilling.

Full-Process Service Guarantee

Full-process service to ensure a pleasant cooperation experience.

Material Options

Stainless steel, brass, and zinc-plated alloy available for enhanced corrosion protection.

Customized Value-Added Services

Joint research and development to meet the needs of all stages.

​Self-Tapping Black Bolts – High Tensile Strength, for Steel & Structural Applications​

Manufacturers China Wholesale Iron Pan Head Wood Cross Self-tapping Full Thread Stainless Steel Self Tapping Screws for Metal VIEW DETAILS

Manufacturers China Wholesale Iron Pan Head Wood Cross Self-tapping Full Thread Stainless Steel Self Tapping Screws for Metal

Customized 6-48 Torx T6 T8 T10 Steel Black Oxide CNC Lathe Inserts M4 Alloy Replaces Carbide Countersunk Head Screw VIEW DETAILS

Customized 6-48 Torx T6 T8 T10 Steel Black Oxide CNC Lathe Inserts M4 Alloy Replaces Carbide Countersunk Head Screw

Nylon Patch Screw / Torx Nylon Patch Screw Loctite Quality Self Locking Blue Nylok Patch Screw VIEW DETAILS

Nylon Patch Screw / Torx Nylon Patch Screw Loctite Quality Self Locking Blue Nylok Patch Screw

Stainless Steel Zinc Painted BrassCountersunk Head Torx Self Tapping Screw VIEW DETAILS

Stainless Steel Zinc Painted BrassCountersunk Head Torx Self Tapping Screw

Quality inspection
#
Process Name
Checking Items
Detection frequency
Inspection Tools/Equipments
1
IQC
Check raw material: Dimension, Ingredient, RoHS
Caliper, Micrometer, XRF spectrometer
2


Heading
Outward appearance, Dimension
First parts inspection: 5pcs each time
Regular inspection: Dimension -- 10pcs/2hours; Outward appearance -- 100pcs/2hours
Caliper, Micrometer, Projector, Visual
3


Threading
Outward appearance, Dimension, Thread
First parts inspection: 5pcs each time
Regular inspection: Dimension -- 10pcs/2hours; Outward appearance -- 100pcs/2hours
Caliper, Micrometer, Projector, Visual, Ring gauge
4
Heat treatment
Hardness, Torque
10pcs each time
Hardness Tester
5
Plating
Outward appearance, Dimension, Function
MIL-STD-105E Normal and strict single sampling plan
Caliper, Micrometer, Projector, Ring gauge
6
Full Inspection
Outward appearance, Dimension, Function
Roller machine, CCD, Manual
7
Packing&Shipment
Packing, Labels, Quantity, Reports
MIL-STD-105E Normal and strict single sampling plan
Caliper, Micrometer, Projector, Visual, Ring gauge

FAQ

Are you a trading company or manufacturer?

We are factory. we have more than 20 years experience of fasteneral making in China.
For the first cooperation, we can do 20- 30% deposit in advance by T/T, Paypal,Western Union,Money gram and Check in cash, the balance paid against the copy of waybill or B/L.
We work with carbon steel, stainless steel, brass, and other special alloys.
Yes. Stock items are free (freight at buyer’s cost). Custom items may require tooling charges, with small samples shipped at our cost.

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What Our Clients Are Saying

​​Lisa K.
​​Lisa K.

These self-tapping screws saved my deck project. I didn't need to pre-drill a single pilot hole, which cut my work time in half.

Mark Rodriguez
Mark Rodriguez

Finally, screws that don't strip out in metal roofing! The sharp tip and clean threads grabbed hold and didn't let go, even in high winds.

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Why Choose Us

Why Choose Us

Dongguan Yuhuang Electronic Technology Co., Ltd. is mainly committed to the research and development and customization of non-standard hardware components, as well as the production of various precision fasteners such as GB, ANSI, DIN, JIS, ISO, etc. It is a large and medium-sized enterprise that integrates production, research and development, sales, and service. The company currently has over 100 employees, including 25 with more than 10 years of service experience, including senior engineers, core technical personnel, sales representatives, etc. The company has established a comprehensive ERP management system and has been awarded the title of "High tech Enterprise". It has passed ISO9001, ISO14001, and IATF16949 certifications, and all products comply with REACH and ROSH standards.

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