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Screws › Countersunk & Flat-Head Machine Screws

K-Series Torx Flat Countersunk Stainless Steel Concrete Lock Screw

Updated 2026-11-04 · Markdown version

US$0.05285,000–9,999 pieces

US$0.039610,000–99,999 pieces

US$0.0264100,000+ pieces

MOQ 5,000 pieces · Final price confirmed in your quote

Material: Carbon Steel
Head Style: Round
Standard: DIN, GB, ANSI, JIS
Grade: 8.8
Customized: Yes
Screw Diameter: 8mm
Surface: Galvanized
Screw Length: 3mm-110mm Aviliable

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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

Customization	Available
Material	Carbon Steel
Type	Pan Head
Groove	Flower
Connection	Hinged Bolts
Head Style	Round
Standard	DIN, GB, ANSI, JIS
Grade	8.8
Customized	Yes
Screw Diameter	8mm
Surface	Galvanized
Screw Length	3mm-110mm Aviliable
Drive	Hand Twist
Transport Package	General Export Package/Require to Customer
Specification	M2-M16
Origin	China
HS Code	7318150000
Production Capacity	800 Tons/Month
Package Size	27.00cm * 20.00cm * 16.00cm
Package Gross Weight	15.000kg
Category	Countersunk & Flat-Head Machine Screws

Technical parameters

Specification	Value	Unit	Description
Standard	GB2672-2017, ISO 14585-2011	-	The standards that the hexalobular socket self-tapping screws comply with.
Material	Stainless steel, Steel	-	Materials that the screws are made of.
Surface	As-rolled, Electroplated	-	Surface treatment of the screws.
Performance Grade	A2-70, 4.8, 5.8	-	Tensile strength grades of the screws.
Features	Anti-slip, High torque	-	Key features of the screws, such as anti-slip and high torque capability.
Thread Size	M2 to M10	mm	Range of thread sizes available.
Pitch	0.4 to 1.5	mm	Thread pitch for different sizes.
Head Type	Pan head	-	Type of screw head.
Drive Type	Hexalobular	-	Type of drive system used for the screws.

Transportation Method	Destination Regions	Estimated Timeframe	Packaging Options
Via Ocean shipping	North America	About 40 working days	Boxes, cartons or plastic bags, or as per customer needs.
	South America	About 40 working days
	Eastern Europe	30-40 working days
	Southeast Asia	20-30 working days
	Africa	35-45 working days
	India, Pakistan	About 40 working days
	Korea, Japan	About 40 working days
Air transport	Other places	Around 1-3 business days	Boxes, cartons or plastic bags, or as per customer needs.

Description

K-Series Torx Flat Countersunk Stainless Steel Concrete Lock Screw is part of our countersunk & flat-head machine screws range (Screws).

Key details

Type: Pan Head
Standard: DIN, GB, ANSI, JIS
Material: Carbon Steel
Grade: 8.8
Head Style: Round
Groove: Flower
Drive: Hand Twist
Connection: Hinged Bolts

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

Ordering through Engineering Hardware & Fasteners

Minimum order is 5,000 pieces at US$0.0264 – 0.0528 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 K-Series Torx Flat Countersunk Stainless Steel Concrete Lock Screw?

The listed minimum order is 5,000 pieces, at US$0.0264 – 0.0528 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$0.0528 for 5,000–9,999 pieces; US$0.0396 for 10,000–99,999 pieces; US$0.0264 for 100,000+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote.

What are the main specifications of K-Series Torx Flat Countersunk Stainless Steel Concrete Lock Screw?

Type: Pan Head; Standard: DIN, GB, ANSI, JIS; Material: Carbon Steel; Grade: 8.8; Head Style: Round; Groove: Flower. The full specification table and any technical parameter tables are listed on this page.

Can this product be customized (OEM)?

Listed configurations include material, head style, standard, grade and customized. 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 countersunk & flat-head machine screws are available?

The Countersunk & Flat-Head Machine Screws category lists 2,424 products in different sizes, materials and finishes: https://engineeringhardware.com/fastener-products/screws/countersunk-flat-head-machine-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

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US$0.0264 – 0.0528MOQ 5,000 piecesGet a quote WA