--- title: "High-Strength Slotted Countersunk Head OEM Custom Machine Screws for Electrical Installation" description: "High-Strength Slotted Countersunk Head OEM Custom Machine Screws for Electrical Installa… — Countersunk & Flat-Head Machine Screws." url: https://engineeringhardware.com/product/high-strength-slotted-countersunk-head-oem-custom-machine-screws-for-electrical/ source: Engineering Hardware & Fasteners --- # High-Strength Slotted Countersunk Head OEM Custom Machine Screws for Electrical Installation [![High-Strength Slotted Countersunk Head OEM Custom Machine Screws for Electrical Installation](https://img.engineeringhardware.com/High-Strength-Slotted-Countersunk-Head-OEM-Custom-Machine-Screws-for-Electrical-Installation.webp)](https://img.engineeringhardware.com/High-Strength-Slotted-Countersunk-Head-OEM-Custom-Machine-Screws-for-Electrical-Installation.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/high-strength-slotted-countersunk-head-oem-custom-machine-screws-for-electrical.md) Model no. **M1-M20** US$0.012 – 0.06 / piece MOQ 1,000 pieces · Final price confirmed in your quote - **Material:** Carbon Steel, Stainless Steel - **Head Style:** Round - **Standard:** GB / DIN / ISO - **Grade:** A2/A4 - **Size:** Customizable - **OEM Custom:** Yes - **ODM Custom:** Yes - **Package Size:** 36.00cm * 26.00cm * 16.00cm Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20High-Strength%20Slotted%20Countersunk%20Head%20OEM%20Custom%20Machine%20Screws%20for%20Electrical%20Installation%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fhigh-strength-slotted-countersunk-head-oem-custom-machine-screws-for-electrical%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 | Customization | Available | | --- | --- | | Material | Carbon Steel, Stainless Steel | | Type | Countersunk Head | | Model NO. | M1-M20 | | Groove | Cross / Torx / Square / Slotted | | Connection | Common Bolt | | Head Style | Round | | Standard | GB / DIN / ISO | | Grade | A2/A4 | | Product Name | Stainless Steel/Carbon Steel Countersun Head Screw | | Keywords | Countersunk Head | | Size | Customizable | | Delivery Time | 7-15 Working Days | | Certificate | ISO9001 / ISO14001 / ISO45001 / IATF16949 | | Feature | Durable, High Hardness, Environmental | | Application | Decoration, Industry, Equipment | | MOQ | 1000PCS | | OEM Custom | Yes | | ODM Custom | Yes | | Sample | Yes | | Transport Package | Carton+Pallet | | Specification | M1-M20 | | Origin | Jiangsu, China | | Production Capacity | 400tons/Month | | Package Size | 36.00cm * 26.00cm * 16.00cm | | Package Gross Weight | 1.000kg | | Category | [Countersunk & Flat-Head Machine Screws](https://engineeringhardware.com/fastener-products/screws/countersunk-flat-head-machine-screws/) | ## Technical parameters | Thread Specification | M1.6 | M2 | M2.5 | M3 | (M3.5) | M4 | M5 | M6 | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | P | Thread Pitch | 0.35 | 0.4 | 0.45 | 0.5 | 0.6 | 0.7 | 0.8 | 1 | | a | Max | 0.7 | 0.8 | 0.9 | 1 | 1.2 | 1.4 | 1.6 | 2 | | dk | Max=Nominal | 3 | 3.8 | 4.7 | 5.6 | 6.5 | 7.5 | 9.2 | 11 | | Min | 2.75 | 3.5 | 4.4 | 5.3 | 6.14 | 7.14 | 8.84 | 10.57 | | | k | Max | 0.96 | 1.2 | 1.5 | 1.65 | 1.93 | 2.2 | 2.5 | 3 | | r | Max | 0.4 | 0.5 | 0.7 | 0.8 | 0.95 | 1 | 1.3 | 1.6 | | x | Max | 0.9 | 1 | 1.1 | 1.25 | 1.5 | 1.75 | 2 | 2.5 | | Slot Number | 0 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | | | M1 | ≈ | 1.7 | 2.35 | 2.7 | 2.9 | 3.9 | 4.4 | 4.6 | 6.6 | | M2 | ≈ | 1.8 | 2.2 | 2.5 | 2.8 | 3.7 | 4 | 4.4 | 6.1 | | Thread Specificationd | M3 | M4 | M5 | M6 | M8 | M10 | M12 | (M14) | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | P | Thread Pitch | 0.5 | 0.7 | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | | a | tol.(=2) | 90° | 90° | 90° | 90° | 90° | 90° | 90° | 90° | | b | L≤125 | 12 | 14 | 16 | 18 | 22 | 26 | 30 | 34 | | 125 | / | / | / | 24 | 28 | 32 | 36 | 40 | | | L>200 | / | / | / | / | / | 45 | 49 | 53 | | | dk | Max=Nominal | 6 | 8 | 10 | 12 | 16 | 20 | 24 | 27 | | Min | 5.7 | 7.64 | 9.64 | 11.57 | 15.57 | 19.48 | 23.48 | 26.48 | | | ds | Max=Nominal | 3 | 4 | 5 | 6 | 8 | 10 | 12 | 14 | | Min | 2.86 | 3.82 | 4.58 | 5.82 | 7.78 | 9.78 | 11.73 | 13.73 | | | e | Min | 2.3 | 2.87 | 3.44 | 4.58 | 5.72 | 6.86 | 9.15 | 11.43 | | k | Max | 1.7 | 2.3 | 2.8 | 3.3 | 4.4 | 5.5 | 6.5 | 7 | | s | Nominal | 2 | 2.5 | 3 | 4 | 5 | 6 | 8 | 10 | | Min | 2.02 | 2.52 | 3.02 | 4.02 | 5.02 | 6.02 | 8.025 | 10.025 | | | Max | 2.1 | 2.6 | 3.1 | 4.12 | 5.14 | 6.14 | 8.175 | 10.175 | | | t | Max=Nominal | 1.2 | 1.8 | 2.3 | 2.5 | 3.5 | 4.4 | 4.6 | 4.8 | | Min | 0.95 | 1.55 | 2.05 | 2.25 | 3.2 | 4.1 | 4.3 | 4.5 | | ## Description High-Strength Slotted Countersunk Head OEM Custom Machine Screws for Electrical Installation is part of our countersunk & flat-head machine screws range (Screws). ### Key details - **Type:** Countersunk Head - **Standard:** GB / DIN / ISO - **Material:** Carbon Steel, Stainless Steel - **Grade:** A2/A4 - **Size:** Customizable - **Head Style:** Round - **Groove:** Cross / Torx / Square / Slotted - **Connection:** Common Bolt Available configurations include material, head style, standard, grade and size. 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 – 0.06 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 High-Strength Slotted Countersunk Head OEM Custom Machine Screws for Electrical Installation? The listed minimum order is 1,000 pieces, at US$0.012 – 0.06 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 High-Strength Slotted Countersunk Head OEM Custom Machine Screws for Electrical Installation? Type: Countersunk Head; Standard: GB / DIN / ISO; Material: Carbon Steel, Stainless Steel; Grade: A2/A4; Size: Customizable; 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 material, head style, standard, grade and size. 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 & 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custom quote →](https://engineeringhardware.com/contact/) ## Request a quote for this product ## Related products [All Countersunk & Flat-Head Machine Screws →](https://engineeringhardware.com/fastener-products/screws/countersunk-flat-head-machine-screws/) [![Countersunk Head Stainless Steel Flat Screw ISO14586](https://img.engineeringhardware.com/Countersunk-Head-Stainless-Steel-Flat-Screw-ISO14586.webp)](https://engineeringhardware.com/product/countersunk-head-stainless-steel-flat-screw-iso14586/) Countersunk & Flat-Head Machine Screws ### [Countersunk Head Stainless Steel Flat Screw ISO14586](https://engineeringhardware.com/product/countersunk-head-stainless-steel-flat-screw-iso14586/) Quill · DIN, GB, ANSI **US$0.024 – 0.036**MOQ 1,000 pieces [![Customized Furniture Euro Screws 6mm * 13mm Flat Head Countersunk Head Elevator Screw Made-in China 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#8](https://img.engineeringhardware.com/ASME-ANSI-B-18-6-3-Cross-Recessed-Pan-Head-Machine-Screws-8.webp)](https://engineeringhardware.com/product/asme-ansi-b-18-6-3-cross-recessed-pan-head-machine-screws-8/) Countersunk & Flat-Head Machine Screws ### [ASME/ANSI B 18.6.3 Cross Recessed Pan Head Machine Screws #8](https://engineeringhardware.com/product/asme-ansi-b-18-6-3-cross-recessed-pan-head-machine-screws-8/) Countersunk Head · DIN, GB, ANSI, BSW, JIS, GOST **US$0.12**MOQ 1,000 pieces **US$0.012 – 0.06**MOQ 1,000 piecesGet a quote[WA](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20High-Strength%20Slotted%20Countersunk%20Head%20OEM%20Custom%20Machine%20Screws%20for%20Electrical%20Installation%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fhigh-strength-slotted-countersunk-head-oem-custom-machine-screws-for-electrical%2F)