Standard & made-to-drawing parts
Checked before shipping
Air, sea & express delivery

Screws › Security & Tamper-Resistant Screws

Premium Rolled Thread Tamper-Proof Self-Tapping Screws for M8 Hex Head

Updated 2026-11-04 · Markdown version

Model no. Triangle Thread Screw

US$0.121,000–4,999 pieces

US$0.0965,000–9,999 pieces

US$0.07210,000–49,999 pieces

US$0.01250,000+ pieces

MOQ 1,000 pieces · Final price confirmed in your quote

Surface Finishing: Zinc Plated
Customized: Customized
Fastener Standard: ASTM, ANSI, AISI, DIN, ISO, Ifi, JIS
Fastener Material: Stainless Steel
Fastener Grade: B8/B8m
Fastener Finish: Plain
Size: M6-M12; 1/4"-3/4"
Length: 10mm - 300mm

Get a quote WhatsApp

Specifications are as listed for this product. Engineering Hardware & Fasteners confirms ratings, mating parts, compatibility, packing and lead time with you before you order.

Specifications

Model NO.	Triangle Thread Screw
Surface Finishing	Zinc Plated
Certification	ISO, GS, RoHS, CE
Customized	Customized
Product Name	Triangular Thread Screw
Keywords	Triangular Screw
Fastener Standard	ASTM, ANSI, AISI, DIN, ISO, Ifi, JIS
Fastener Material	Stainless Steel
Fastener Grade	B8/B8m
Fastener Finish	Plain
Size	M6-M12; 1/4"-3/4"
Length	10mm - 300mm
Material Range	Stainless Steel / Carbon Steel
Thread Size	M6/M6.3/M7/M8/M10/M12
Bolts Length	12/14/25/40/45/50/55 mm
Mark	According to Customer's Requirement
Surface Treatment	Black, Zinc, Plain, Zinc Plated, Blue Anodized
OEM & ODM Custom	Accept
Sample	Accept
Transport Package	Standard Packaging or Customized
Specification	Standard Specifications or Customized
Origin	Zhejiang, China
Production Capacity	5000000 Pieces/Year
Package Size	10.00cm * 10.00cm * 10.00cm
Package Gross Weight	2.000kg
Customization	Available
Material	Stainless Steel
Shape of Head	Round
Shipping Cost	Contact the supplier about freight and estimated delivery time.
SELF-TAPPING AND SELF-LOCKING	The unique triangular shape of the thread allows the screw to create its own thread in the mating material, eliminating the need for pre-tapping and reducing costs. This also creates a self-locking mechanism, enhancing the connection's resistance to loosening under vibration.
ENHANCED LOCKING PERFORMANCE	The design can improve locking performance, especially when resonance is produced, without the need for spring pads or other auxiliary locking devices. This leads to more reliable and cost-effective connections.
REDUCED FRICTION	The triangular shape reduces friction between the screw and the mating material, leading to smoother assembly and potentially lower drive torque requirements.
STRONGER CONNECTIONS	The deep thread engagement provided by the triangular profile results in a stronger connection with increased holding power.
COST-EFFECTIVE	By eliminating pre-tapping and reducing the need for additional locking components, triangular thread screws can be a cost-effective solution in various applications.
FAST AND RELIABLE DELIVERY	The product has a standard delivery time of 30-40 days, ensuring that customers receive their orders in a timely manner. This swift delivery is particularly beneficial for businesses with urgent needs or projects with tight deadlines.
COMPLIANCE WITH INTERNATIONAL STANDARDS	The product adheres to international standards, including DIN and IFI, guaranteeing quality and safety. This compliance is crucial for industries that require adherence to specific regulations and standards.
ISO 9001	2008
Standard parts	7-15 days. Non-standard parts: 15- 25 days.We will make the delivery as soon as possible with guaranteed quality.
Category	Security & Tamper-Resistant Screws

Technical parameters

OEM & ODM CUSTOM STANDARD AND NON-STANDARD FASTENER
Material	Carbon Steel, Brass, Stainless steel, Steel, Alloy Steel, Aluminum, titanium, and as per customer's request
Heat Treating & Surface Treatment	Tempering,Hardening,Spheroidizing,Stress Relieving.
Surface	Zinc Plated, Zinc Yellow, Geomet, JS 500, E-Coating, Hot Dipped Galvanized, Nickle, Brass, Dacromet, Black Oxide, Black Phosphate, and as per customer's request
Standard	ASTM, ANSI, AISI, DIN, ISO, IFI, JIS and Non-standard
Size	Customized
Certificate	ISO 9001:2008
Production Capacity:	300 Tons/month
Sample:	Avaliable

Description

Premium Rolled Thread Tamper-Proof Self-Tapping Screws for M8 Hex Head is part of our security & tamper-resistant screws range (Screws).

Key details

Material: Stainless Steel
Size: M6-M12; 1/4"-3/4"
Thread Size: M6/M6.3/M7/M8/M10/M12
Length: 10mm – 300mm
Surface Treatment: Black, Zinc, Plain, Zinc Plated, Blue Anodized
Certification: ISO, GS, RoHS, CE
Surface Finishing: Zinc Plated
Product Name: Triangular Thread Screw

Available configurations include surface finishing, customized, fastener standard, fastener material and fastener grade. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request.

Ordering through Engineering Hardware & Fasteners

Minimum order is 1,000 pieces at US$0.012 – 0.12 per piece. Send one inquiry with the part number, quantity and destination, and Engineering Hardware & Fasteners confirms size, thread, material, grade, finish, price, lead time and shipping, checks the goods before dispatch and ships them to you.

Frequently asked questions

What is the minimum order quantity (MOQ) for Premium Rolled Thread Tamper-Proof Self-Tapping Screws for M8 Hex Head?

The listed minimum order is 1,000 pieces, at US$0.012 – 0.12 per piece. Smaller trial quantities or samples can be requested in your inquiry; Engineering Hardware & Fasteners confirms what is possible for your size.

How does the price change with quantity?

Volume pricing: US$0.12 for 1,000–4,999 pieces; US$0.096 for 5,000–9,999 pieces; US$0.072 for 10,000–49,999 pieces; US$0.012 for 50,000+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote.

What are the main specifications of Premium Rolled Thread Tamper-Proof Self-Tapping Screws for M8 Hex Head?

Material: Stainless Steel; Size: M6-M12; 1/4"-3/4"; Thread Size: M6/M6.3/M7/M8/M10/M12; Length: 10mm - 300mm; Surface Treatment: Black, Zinc, Plain, Zinc Plated, Blue Anodized; Certification: ISO, GS, RoHS, CE. The full specification table and any technical parameter tables are listed on this page.

Can this product be customized (OEM)?

Listed configurations include surface finishing, customized, fastener standard, fastener material and fastener grade. Size, thread, length, material and grade, surface finish, head marking, packaging and labels can be quoted to your specification or drawing.

What is the lead time and how is it shipped?

Lead time depends on quantity and customization and is confirmed in your quote. Engineering Hardware & Fasteners checks the goods before dispatch and ships by express, air or sea; mixed orders can be consolidated in one shipment.

Which other security & tamper-resistant screws are available?

The Security & Tamper-Resistant Screws category lists 619 products in different sizes, materials and finishes: https://engineeringhardware.com/fastener-products/screws/security-tamper-resistant-screws/

How we work

Specified, checked and shipped by Engineering Hardware & Fasteners

Engineering Hardware & Fasteners supplies bolts, screws, nuts, washers, anchors, rivets and fastening hardware to equipment makers, contractors, distributors and maintenance teams. Orders go through one controlled process: size, thread, material, grade and finish confirmed, samples approved, dimensions, thread fit and plating checked before packing, then packed for export — standard or made to drawing.

DIN, ISO, ASTM, ANSI, JIS and GB standard parts
Non-standard parts made to your drawing
Dimensions, thread gauges and plating checked before packing
Export cartons and pallets, consolidated mixed orders
Samples available for approval before mass production

More about us → · Request a sample or custom quote →

Request a quote for this product

US$0.012 – 0.12MOQ 1,000 piecesGet a quote WA