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Screws › Countersunk & Flat-Head Machine Screws

Carbon Steel Black Oxide Flat Head Screw

Updated 2026-11-04 · Markdown version

Model no. M3 M14 M16 M18 M20 M22 M24 M27 M30 M33 M36 M39

US$0.601,000–9,999 pieces

US$0.4810,000–19,999 pieces

US$0.3620,000–24,999 pieces

US$0.2425,000–29,999 pieces

US$0.1230,000+ pieces

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

Material: Carbon Steel
Head Style: Round
Standard: DIN, ANSI, GB
Grade: 10.9
Finish: Color-Zinc Plated
Size: M1.6-M52
Head Type: Round
Package Size: 20.00cm * 20.00cm * 20.00cm

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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	Round Head
Model NO.	M3 M14 M16 M18 M20 M22 M24 M27 M30 M33 M36 M39
Connection	Common Bolt
Head Style	Round
Standard	DIN, ANSI, GB
Grade	10.9
Application	Machinery, Chemical Industry, Environmental, Building
Finish	Color-Zinc Plated
Size	M1.6-M52
Lenght	6mm-350mm
Delivery Time	7-30days
Certificate	ISO9001:2008
Package	Cartons +Pallet
Sampless	Free
MOQ	100PCS
Product Name	Socket Countersunk Head Screw
Service	OEM/ ODM
Industry	Fastener
Sample	Availible
Payment Term	Tt 30% Deposit
Supply Ability	1000 Tons Per Month
Head Type	Round
Place of Origin	Zhejiang, China
Transport Package	Cartons + Pallet
Specification	m6-m64
Origin	Zhejiang
Production Capacity	1000ton/Month
Package Size	20.00cm * 20.00cm * 20.00cm
Package Gross Weight	2.000kg
Professional Manufacturer	All of our Fastener are designed and manufactured according to buyers' specification and performance.
Quality is guaranteed	Durability testing and critical technical design to enhance fasteners lifetime.
Cost effective	Competitive prices with factory directly supply
to solve your problem	Wide range of parts selection.
Customized Ideal Fasteners	customized services according to the samples and drawings offered.
Category	Countersunk & Flat-Head Machine Screws

Description

Carbon Steel Black Oxide Flat Head Screw is part of our countersunk & flat-head machine screws range (Screws).

Key details

Type: Round Head
Standard: DIN, ANSI, GB
Material: Carbon Steel
Grade: 10.9
Size: M1.6-M52
Head Type: Round
Head Style: Round
Finish: Color-Zinc Plated

Available configurations include material, head style, standard, grade and finish. 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$0.12 – 0.60 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 Carbon Steel Black Oxide Flat Head Screw?

The listed minimum order is 1,000 pieces, at US$0.12 – 0.60 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$0.60 for 1,000–9,999 pieces; US$0.48 for 10,000–19,999 pieces; US$0.36 for 20,000–24,999 pieces; US$0.24 for 25,000–29,999 pieces; US$0.12 for 30,000+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote.

What are the main specifications of Carbon Steel Black Oxide Flat Head Screw?

Type: Round Head; Standard: DIN, ANSI, GB; Material: Carbon Steel; Grade: 10.9; Size: M1.6-M52; Head Type: Round. 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 finish. 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

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

Request a quote for this product

US$0.12 – 0.60MOQ 1,000 piecesGet a quote WA