---
title: "Grade12.9 Black Csk Flat Head Screw From China"
description: "Grade12.9 Black Csk Flat Head Screw From China — Countersunk & Flat-Head Machine Screws. MOQ 100,000 pieces, US$0.012 – 0.12."
url: https://engineeringhardware.com/product/grade12-9-black-csk-flat-head-screw-from-china/
source: Engineering Hardware & Fasteners
---

# Grade12.9 Black Csk Flat Head Screw From China

[![Grade12.9 Black Csk Flat Head Screw From China](https://img.engineeringhardware.com/Grade12-9-Black-Csk-Flat-Head-Screw-From-China.webp)](https://img.engineeringhardware.com/Grade12-9-Black-Csk-Flat-Head-Screw-From-China.webp)

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

[Screws › Countersunk & Flat-Head Machine Screws](https://engineeringhardware.com/fastener-products/screws/countersunk-flat-head-machine-screws/)

Updated 2026-11-04 · [Markdown version](https://engineeringhardware.com/product/grade12-9-black-csk-flat-head-screw-from-china.md)

Model no. **M6-20**

US$0.012 – 0.12 / piece

MOQ 100,000 pieces · Final price confirmed in your quote

- **Head Style:** Round
- **Standard:** DIN, GB
- **Grade:** 12.9
- **Thread:** Metric
- **Surface Treatment:** Black
- **Package Size:** 1100.00cm * 800.00cm * 500.00cm
- **Material:** Carbon Steel

Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Grade12.9%20Black%20Csk%20Flat%20Head%20Screw%20From%20China%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fgrade12-9-black-csk-flat-head-screw-from-china%2F)

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. | M6-20 |
| --- | --- |
| Groove | Hexagon |
| Connection | Common Bolt |
| Head Style | Round |
| Standard | DIN, GB |
| Grade | 12.9 |
| Thread | Metric |
| Surface Treatment | Black |
| Usage | Machinery |
| MOQ | 1ton |
| Transport Package | Carton+Wood Pallet |
| Specification | M6-M20 |
| Origin | Hebei, China |
| HS Code | 73182200 |
| Production Capacity | 250tons/Month |
| Package Size | 1100.00cm * 800.00cm * 500.00cm |
| Package Gross Weight | 25.000kg |
| Customization | Available |
| Material | Carbon Steel |
| Type | Round Head |
| Shipping Cost | Contact the supplier about freight and estimated delivery time. |
| Tips | seclect Nominal Length L and get |
| Category | [Countersunk & Flat-Head Machine Screws](https://engineeringhardware.com/fastener-products/screws/countersunk-flat-head-machine-screws/) |

## Technical parameters

| Nominal Length L - 5 6 8 10 12 16 20 25 30 35 40 45 50 55 60 65 70 80 90 100 Tips:seclect Nominal Length L and get Thread length. |
| --- |

| M2 | M2.5 | M3 | M4 | M5 | M6 | M8 | M10 | M12 | (M14) | M16 | M20 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |

| P | Pitch |  |
| --- | --- | --- |
| b | ref. |  |
| dk | Theoretical | max |
| Actual | max |  |
| min |  |  |
| ds | max |  |
| min |  |  |
| e | min |  |
| k | Ref. | max |
| min |  |  |
| s | Nominal Size |  |
| max |  |  |
| min |  |  |
| t | max |  |
| min |  |  |
| Minimum tensile load(N)-8.8 |  |  |
| Minimum tensile load(N)-10.9 |  |  |
| Minimum tensile load(N)-12.9 |  |  |
| Minimum tensile load(N)-50 |  |  |
| Minimum tensile load(N)-70 |  |  |
| Minimum tensile load(N)-80 |  |  |

| 0.4 | 0.45 | 0.5 | 0.7 | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 | 2.5 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| - | - | 18 | 20 | 22 | 24 | 28 | 32 | 36 | 42 | 48 | 60 |
| 4.7 | 5.88 | 6.72 | 8.96 | 11.2 | 13.44 | 17.92 | 22.4 | 26.88 | 30.8 | 33.6 | 40.32 |
| 4.09 | 5.08 | 5.81 | 7.96 | 10.07 | 12.16 | 16.43 | 20.69 | 24.81 | 28.31 | 30.61 | 36.75 |
| 3.7 | 4.8 | 5.54 | 7.53 | 9.43 | 11.34 | 15.24 | 19.22 | 23.12 | 26.52 | 29.01 | 35.4 |
| 2 | 2.5 | 3 | 4 | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 20 |
| 1.86 | 2.36 | 2.86 | 3.82 | 4.82 | 5.82 | 7.78 | 9.78 | 11.73 | 13.73 | 15.73 | 19.67 |
| 1.454 | 1.733 | 2.303 | 2.873 | 3.443 | 4.583 | 5.723 | 6.863 | 9.149 | 11.429 | 11.429 | 13.716 |
| 1.35 | 1.69 | 1.86 | 2.48 | 3.1 | 3.72 | 4.96 | 6.2 | 7.44 | 8.4 | 8.8 | 10.16 |
| 1.13 | 1.408 | 1.522 | 2.121 | 2.669 | 3.218 | 4.366 | 5.563 | 6.711 | 7.588 | 7.874 | 9.037 |
| 1.3 | 1.5 | 2 | 2.5 | 3 | 4 | 5 | 6 | 8 | 10 | 10 | 12 |
| 1.36 | 1.56 | 2.08 | 2.58 | 3.08 | 4.095 | 5.14 | 6.14 | 8.175 | 10.175 | 10.175 | 12.212 |
| 1.32 | 1.52 | 2.02 | 2.52 | 3.02 | 4.02 | 5.02 | 6.02 | 8.025 | 10.025 | 10.025 | 12.032 |
| 0.85 | 1.15 | 1.25 | 1.65 | 2 | 2.5 | 3.2 | 3.9 | 4.9 | 5.1 | 5.4 | 6.4 |
| 0.75 | 1 | 1.1 | 1.4 | 1.75 | 2.2 | 2.9 | 3.5 | 4.3 | 4.5 | 4.8 | 5.6 |
| 1330 | 2180 | 3220 | 5620 | 9080 | 12900 | 23400 | 37100 | 53900 | 73600 | 100000 | 162000 |
| 1730 | 2820 | 4180 | 7300 | 11800 | 16700 | 30500 | 48200 | 70200 | 96000 | 130000 | 204000 |
| 2020 | 3310 | 4910 | 8560 | 13800 | 19600 | 35700 | 56600 | 82400 | 112000 | 154000 | 239000 |
| 830 | 1360 | 2010 | 3510 | 5680 | 8060 | 14600 | 23200 | 33710 | 46180 | 62670 | 97920 |
| 1160 | 1900 | 2810 | 4910 | 7950 | 11270 | 20400 | 32400 | 47190 | 64650 | 87760 | 137120 |
| 1330 | 2180 | 3220 | 5620 | 9080 | 12880 | 23430 | 37120 | 53940 | 73890 | 100320 | 156720 |

| Length of Thread b |
| --- |

| - | - | - | - | - | - | - | - | - | - | - | - |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |

| ,e mim=1.14 S min ,80% of the values for Fm,min as specified in ISO 898-1. ,80% of the values for Fm,min as specified in ISO 3506-1. |
| --- |

| FAQ |
| --- |
| Threaded rod, Hex bolt, Hex Nut, Flat washer, Screws, Anchors, Blind rivet, etc |
| It depends on sizes, Usually 200 kgs to 1000 kgs. |
| From 7 days to 75 days, depends on your sizes and quantity. |
| T/T, LC, DP, etc. |
| Due to a lot of kinds of fasteners, we quote prices accoridng to sizes, quantity, packing only. |
| Sure, free sampls will be provided |

## Description

Grade12.9 Black Csk Flat Head Screw From China is part of our countersunk & flat-head machine screws range (Screws).

### Key details

- **Type:** Round Head
- **Standard:** DIN, GB
- **Material:** Carbon Steel
- **Grade:** 12.9
- **Thread:** Metric
- **Head Style:** Round
- **Groove:** Hexagon
- **Surface Treatment:** Black

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

### Ordering through Engineering Hardware & Fasteners

Minimum order is 100,000 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 Grade12.9 Black Csk Flat Head Screw From China?

The listed minimum order is 100,000 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.

### What are the main specifications of Grade12.9 Black Csk Flat Head Screw From China?

Type: Round Head; Standard: DIN, GB; Material: Carbon Steel; Grade: 12.9; Thread: Metric; Head Style: Round. The full specification table and any technical parameter tables are listed on this page.

### Can this product be customized (OEM)?

Listed configurations include head style, standard, grade, thread and surface treatment. 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/](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

[![Production floor](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-01-production-floor-1024x683.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-01-production-floor.webp)

Production floor

[![Inspection bench](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-02-inspection-bench-768x512.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-02-inspection-bench.webp)

Inspection bench

[![Sorting & packing](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-03-sorting-and-packing-768x512.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-03-sorting-and-packing.webp)

Sorting & packing

[![Parts warehouse](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-04-parts-warehouse-768x512.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-04-parts-warehouse.webp)

Parts warehouse

[![Sample review](https://engineeringhardware.com/wp-content/uploads/2026/11/office-02-office-sample-review-768x512.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/office-02-office-sample-review.webp)

Sample review

[![Sales office](https://engineeringhardware.com/wp-content/uploads/2026/11/office-01-daily-sales-office-768x512.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/office-01-daily-sales-office.webp)

Sales office

[More about us →](https://engineeringhardware.com/about/) · [Request a sample or custom quote →](https://engineeringhardware.com/contact/)

## Request a quote for this product

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