--- title: "Colorful Customized Carbon Steel Internal Hexalobular Socket Flat Head Step Screws" description: "Colorful Customized Carbon Steel Internal Hexalobular Socket Flat Head Step Screws — Countersunk & Flat-Head Machine Screws. MOQ 1 piece, US$0.012 – 0.22." url: https://engineeringhardware.com/product/colorful-customized-carbon-steel-internal-hexalobular-socket-flat-head-step-screws/ source: Engineering Hardware & Fasteners --- # Colorful Customized Carbon Steel Internal Hexalobular Socket Flat Head Step Screws [![Colorful Customized Carbon Steel Internal Hexalobular Socket Flat Head Step Screws](https://img.engineeringhardware.com/Colorful-Customized-Carbon-Steel-Internal-Hexalobular-Socket-Flat-Head-Step-Screws.webp)](https://img.engineeringhardware.com/Colorful-Customized-Carbon-Steel-Internal-Hexalobular-Socket-Flat-Head-Step-Screws.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/colorful-customized-carbon-steel-internal-hexalobular-socket-flat-head-step-screws.md) Model no. **internal Hexalobular Socket flat head step screws** US$0.012 – 0.22 / piece MOQ 1 piece · Final price confirmed in your quote - **Material:** Carbon Steel, Alloy Steel, Stainless Steel, etc. - **Head Style:** Flat - **Standard:** DIN, GB, ANSI, BSW, JIS, GOST - **Grade:** as You Requirement. - **Coating:** Plain, Black, Galvanized, HDG, etc. - **Package Size:** 25.00cm * 25.00cm * 10.00cm - **Hardening of carburized surfaces:** HV400-HV550 - **Customizable salt spray testing time:** 12H, 24H, 48H, 96H, 196H, 240H, 480H, 720H, 840H Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Colorful%20Customized%20Carbon%20Steel%20Internal%20Hexalobular%20Socket%20Flat%20Head%20Step%20Screws%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fcolorful-customized-carbon-steel-internal-hexalobular-socket-flat-head-step-screws%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, Alloy Steel, Stainless Steel, etc. | | Type | Flat Head | | Model NO. | internal Hexalobular Socket flat head step screws | | Connection | Common Bolt | | Head Style | Flat | | Standard | DIN, GB, ANSI, BSW, JIS, GOST | | Grade | as You Requirement. | | Coating | Plain, Black, Galvanized, HDG, etc. | | Part Name | Screws and Bolts | | Dimension | as Per Drawing or Custom's Sample | | OEM & ODM | Custom | | After-Sale Service | Yes | | Transport Package | Box | | Specification | Custom | | Origin | China | | Production Capacity | 500000 Piece/Pieces Per Day | | Package Size | 25.00cm * 25.00cm * 10.00cm | | Package Gross Weight | 10.000kg | | Stainless Steel | SUS201; SS303, SS304, SS316, SS410, SS430...; | | Carbon Steel | C1018, C1022, 10B21 | | Alloy Steel | 40Cr,SCM435... | | Oxide | Black Oxide,Anodic oxidation | | Hardening of carburized surfaces | HV400-HV550 | | Customizable salt spray testing time | 12H, 24H, 48H, 96H, 196H, 240H, 480H, 720H, 840H | | Samples | 5-7 days; Mass production: 15-25 days; Negotiable. | | Products in stock | Min. order: 500pcs; | | Custom size and materials | Min. order: 5000pcs; | | Category | [Countersunk & Flat-Head Machine Screws](https://engineeringhardware.com/fastener-products/screws/countersunk-flat-head-machine-screws/) | ## Technical parameters | Material options | Stainless Steel: SUS201; SS303, SS304, SS316, SS410, SS430...; Carbon Steel: C1018, C1022, 10B21,; Alloy Steel:40Cr,SCM435... Brass; Aluminum; Copper; Customized as your requirements. | | --- | --- | | Head Style optional | Pan, Truss, Flat, Hexagonal, Round, HEX, Cheese, Binding,Oval | | Drive Style optional | Phillips,Torx,Inner Hexagonal,Hexagonal,plum ,Cross,Slotted,Star | | Thread Type optional | Self-tapping,Machine teeth(Coarse teeth,Fine teeth),Custom thread | | Standard optional | DIN/ISO/ANSI/DIN/BSW/JIS/GOST/GB | | Finish optional | Plated:Zinc,Zinc nickel alloy , Chrome, Silver,Gold,Brass,Tin Coating:Dacromet,MAGni,Geomet,Electrophoresis,Baking paint Passivation;Oxide:Black Oxide,Anodic oxidation | | Fastener performance optional | Carbon Steel: 4.8~12.9 grade; Stainless Steel: A2-70, A4-70, A4-80, A5-80; Hardening of carburized surfaces:HV400-HV550 As you requirement. | | Anticorrosion requirement | Customizable salt spray testing time: 12H, 24H, 48H, 96H, 196H, 240H, 480H, 720H, 840H | | Size customization range | M0.6mm,MO.8mm ~ M36mm | | Length customization range | 1mm~600mm | | Environmental Data | Rohs,SCHV,MSDS,IMDS | | Quality test | Performance test report Salt spray test report Dimensional inspection report PPAP,PSW | | Screw Type | Tapping screws, Machine screws, Wood screws, Drywall screws, Cross recessed screws, Concrete screws, Torx screws, Hex cap screws, Hex socket head screws, Set screws, Shoulder screws, Thumb screws, Binding screws, Flange screws, Screw bolts, Standoff screws, Mini screws, and all custom products, and others. | | Transportation | Fedex, DHL, UPS ,or as customer's requirements. | | Packaging | Independent carton, Self-sealing bag, Blister,Vacuum packaging, Pallet,etc. | | Sample Available | Free samples, and accept small batch trial production order | | Lead Time | Samples: 5-7 days; Mass production: 15-25 days; Negotiable. | | MOQ | Products in stock:Min. order: 500pcs; Custom size and materials: Min. order: 5000pcs; Negotiable. | | Lead time | | | | | | --- | --- | --- | --- | --- | | Quantity (pieces) | 1 - 10000 | 10001 - 50000 | 50001 - 100000 | > 100000 | | Lead time (days) | 10 | 15 | 20 | To be negotiated | ## Description Colorful Customized Carbon Steel Internal Hexalobular Socket Flat Head Step Screws is part of our countersunk & flat-head machine screws range (Screws). ### Key details - **Type:** Flat Head - **Standard:** DIN, GB, ANSI, BSW, JIS, GOST - **Material:** Carbon Steel, Alloy Steel, Stainless Steel, etc. - **Grade:** as You Requirement. - **Head Style:** Flat - **Connection:** Common Bolt - **Coating:** Plain, Black, Galvanized, HDG, etc. - **Part Name:** Screws and Bolts Available configurations include material, head style, standard, grade and coating. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 1 piece at US$0.012 – 0.22 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 Colorful Customized Carbon Steel Internal Hexalobular Socket Flat Head Step Screws? The listed minimum order is 1 piece, at US$0.012 – 0.22 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 Colorful Customized Carbon Steel Internal Hexalobular Socket Flat Head Step Screws? Type: Flat Head; Standard: DIN, GB, ANSI, BSW, JIS, GOST; Material: Carbon Steel, Alloy Steel, Stainless Steel, etc.; Grade: as You Requirement.; Head Style: Flat; Connection: Common Bolt. 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 coating. 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/) [![Titanium Hexagon Socket Countersunk Head Screws](https://img.engineeringhardware.com/Titanium-Hexagon-Socket-Countersunk-Head-Screws.webp)](https://engineeringhardware.com/product/titanium-hexagon-socket-countersunk-head-screws/) Countersunk & Flat-Head Machine Screws ### [Titanium Hexagon Socket Countersunk Head Screws](https://engineeringhardware.com/product/titanium-hexagon-socket-countersunk-head-screws/) Fastener · DIN, GB, ANSI, BSW, JIS, GOST **US$0.36 – 2.40**MOQ 300 pieces [![Stainless Steel Flat Head Screw Spade Head Thumb Racket 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DIN963](https://engineeringhardware.com/product/slotted-countersunk-head-screw-din963/) Round Head · DIN, GB **US$0.012**MOQ 100 pieces **US$0.012 – 0.22**MOQ 1 pieceGet a quote[WA](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Colorful%20Customized%20Carbon%20Steel%20Internal%20Hexalobular%20Socket%20Flat%20Head%20Step%20Screws%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fcolorful-customized-carbon-steel-internal-hexalobular-socket-flat-head-step-screws%2F)