--- title: "DIN7991 High Temp PE Hexagon Socket Countersunk Machine Screw Custom Size" description: "DIN7991 High Temp PE Hexagon Socket Countersunk Machine Screw Custom Size — Socket Head Cap & Allen Screws. MOQ 10,000 pieces, US$0.012 – 0.12." url: https://engineeringhardware.com/product/din7991-high-temp-pe-hexagon-socket-countersunk-machine-screw-custom-size/ source: Engineering Hardware & Fasteners --- # DIN7991 High Temp PE Hexagon Socket Countersunk Machine Screw Custom Size [![DIN7991 High Temp PE Hexagon Socket Countersunk Machine Screw Custom Size](https://img.engineeringhardware.com/DIN7991-High-Temp-PE-Hexagon-Socket-Countersunk-Machine-Screw-Custom-Size.webp)](https://img.engineeringhardware.com/DIN7991-High-Temp-PE-Hexagon-Socket-Countersunk-Machine-Screw-Custom-Size.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Screws › Socket Head Cap & Allen Screws](https://engineeringhardware.com/fastener-products/screws/socket-head-cap-allen-screws/) Updated 2026-11-04 · [Markdown version](https://engineeringhardware.com/product/din7991-high-temp-pe-hexagon-socket-countersunk-machine-screw-custom-size.md) Model no. **HysLSW024** US$0.012 – 0.12 / piece MOQ 10,000 pieces · Final price confirmed in your quote - **Material:** Plastic Steel - **Head Style:** Countersunk - **Standard:** DIN - **Grade:** High Temperature Resistant Plastic Grade - **Customized:** Yes - **Thread Specification:** DIN7991 Standard Unc Metric Thread M3-M30 - **Surface Treatment:** Plain Natural Color, Custom Color Available - **Tolerance Grade:** ISO 2768-M General Mechanical Tolerance Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20DIN7991%20High%20Temp%20PE%20Hexagon%20Socket%20Countersunk%20Machine%20Screw%20Custom%20Size%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fdin7991-high-temp-pe-hexagon-socket-countersunk-machine-screw-custom-size%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 | Plastic Steel | | Type | Hex Socket Countersunk Head Screw | | Model NO. | HysLSW024 | | Groove | Hexagon | | Connection | Common Bolt | | Head Style | Countersunk | | Standard | DIN | | Grade | High Temperature Resistant Plastic Grade | | Customized | Yes | | Drawing | Yes | | Application | Medical Equipment, Chemical Instruments | | Process | CNC Machining, Plastic Injection Molding | | Service | We Support OEM and ODM | | Thread Specification | DIN7991 Standard Unc Metric Thread M3-M30 | | Surface Treatment | Plain Natural Color, Custom Color Available | | Tolerance Grade | ISO 2768-M General Mechanical Tolerance | | Corrosion Resistance | Excellent Acid & Alkali Corrosion Resistant | | Knurl Specification | N/a | | Key Features | High Temperature Resistant, Anti-Corrosion | | Transport Package | Polybag+Export Strong Carton | | Specification | M3-M30 Metric Thread, Custom Length Available | | Origin | China | | HS Code | 3926909090 | | Production Capacity | 100ton/Month | | Package Size | 30.00cm * 20.00cm * 20.00cm | | Package Gross Weight | 0.500kg | | Non-standard parts | 15-25days | | Category | [Socket Head Cap & Allen Screws](https://engineeringhardware.com/fastener-products/screws/socket-head-cap-allen-screws/) | ## Technical parameters | Item | Details | | --- | --- | | Raw Material Category | Plastic Steel series high-performance engineering plastics, including mainstream grades PEEK, PP, PA66, POM, PVC and PTFE. Features outstanding heat resistance, acid & alkali corrosion resistance and insulating performance, non-magnetic and lightweight compared with metal fasteners. | | Product Classification | Hexagon socket countersunk head machine screw manufactured per DIN7991 standard. Countersunk design enables full sinking installation without protruding surface, widely used for hidden assembly in precision equipment. | | Recess Groove Type | Standard inner hexagon drive (Hexagon). Matched with common hexagon wrenches for convenient disassembly and stable locking force, suitable for precision fastening scenarios. | | Connection Mode | Standard common metric bolt structure with complete machine thread, designed for threaded hole matching. No self-tapping required, providing uniform and reliable clamping force. | | Head Profile Shape | Countersunk conical head. The tapered surface can be fully embedded into the mounting hole to keep the workpiece surface flat, avoiding protrusion interference and scratch risks. | | Applicable Production Standard | Mainly comply with DIN standard, core execution specification DIN7991 for countersunk inner hex plastic screws. Support customized non-standard sizes based on special customer requirements. | | Performance Grade Characteristic | High temperature resistant engineering plastic grade. PEEK material can withstand long-term high-temperature working environment, while other plastic variants deliver stable anti-corrosion and insulating properties under normal temperature. | | Export Transportation Package | Independent polybag inner packaging to prevent scratches and dust pollution during transportation; thickened reinforced export cartons for outer packing. Wooden pallet stacking is available for bulk sea shipment orders. | | Complete Size Specification Range | Full metric thread series from M3 to M30, all screw effective lengths support personalized customization according to customer engineering drawings, strictly follow DIN7991 dimension standards. | | Registered Brand | Tengri professional plastic fastener brand, complete full-process production and quality inspection system. Custom laser marking of brand logo and part number on screw head is available for bulk OEM orders. | | Production Origin | All products are injected, machined and fully inspected in China. The factory owns automatic plastic injection molding equipment and precision CNC machining lines with stable monthly mass production capacity. | | Customization Service Support | Full OEM & ODM customization service is available. Customizable items include special screw length, exclusive color matching, customized surface texture and tailored export packaging schemes. | | Engineering Drawing Acceptance Rule | Accept customer-provided 2D engineering drawings and physical sample references. Professional technical team will verify dimensional feasibility and process difficulty before formal mass production. | | Main Application Fields | Medical precision equipment, chemical corrosion-resistant instruments, electronic insulating components, laboratory testing machinery, high-temperature industrial automation equipment and lightweight new energy devices. | | Complete Manufacturing Process Flow | High-performance plastic raw material injection molding forming, precision CNC secondary finishing, thread precision machining, surface deburring treatment, full dimensional inspection and packaging. | | Comprehensive After-sales & Sample Service | One-stop customized supporting service for hardware distributors and equipment manufacturers. Standard stocked samples can be provided free of charge, buyers only need to bear international shipping costs for sample delivery. | | Standard Thread Technical Specification | Produced strictly in accordance with DIN7991 UNC metric machine thread standards covering M3-M30. Smooth burr-free thread ensures stable locking and smooth repeated disassembly. | | Optional Surface Treatment Process | Natural plain original plastic color as standard; customized special colors are supported according to customer color card requirements, no additional coating needed for most plastic materials. | | Dimensional Tolerance Execution Standard | Adopt ISO 2768-M general mechanical precision tolerance standard. All key dimensions such as head diameter, thread diameter and screw length are controlled within micrometer-level deviation. | | Anti-Corrosion & Insulation Performance | Excellent resistance to acid, alkali and various chemical solvents; good electrical insulation performance, effectively avoiding short circuit risks in electronic equipment assembly, stable performance in humid chemical environments. | | Knurl Structure Description | N/A, this countersunk inner hex plastic screw has no anti-slip knurl structure; its locking stability depends on standard inner hex drive and complete machine thread design. | | Core Product Competitive Advantages | Long-term high temperature resistance, strong acid & alkali corrosion resistance, electrical insulation, lightweight non-magnetic, flat countersunk hidden installation, full M3-M30 metric specifications, DIN7991 standard compliance, support full OEM customization. | ## Description DIN7991 High Temp PE Hexagon Socket Countersunk Machine Screw Custom Size is part of our socket head cap & allen screws range (Screws). ### Key details - **Type:** Hex Socket Countersunk Head Screw - **Standard:** DIN - **Material:** Plastic Steel - **Grade:** High Temperature Resistant Plastic Grade - **Head Style:** Countersunk - **Groove:** Hexagon - **Surface Treatment:** Plain Natural Color, Custom Color Available - **Connection:** Common Bolt 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 10,000 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 DIN7991 High Temp PE Hexagon Socket Countersunk Machine Screw Custom Size? The listed minimum order is 10,000 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 DIN7991 High Temp PE Hexagon Socket Countersunk Machine Screw Custom Size? Type: Hex Socket Countersunk Head Screw; Standard: DIN; Material: Plastic Steel; Grade: High Temperature Resistant Plastic Grade; Head Style: Countersunk; Groove: Hexagon. 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 socket head cap & allen screws are available? The Socket Head Cap & Allen Screws category lists 2,042 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/screws/socket-head-cap-allen-screws/](https://engineeringhardware.com/fastener-products/screws/socket-head-cap-allen-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 Socket Head Cap & Allen Screws →](https://engineeringhardware.com/fastener-products/screws/socket-head-cap-allen-screws/) [![DIN912/ASME/ANSI Hex Socket Head Cap Screw M27 Grade10.9/12.9 HDG Black/Yellow/White Zinc](https://img.engineeringhardware.com/DIN912-ASME-ANSI-Hex-Socket-Head-Cap-Screw-M27-Grade10-9-12-9-HDG-Black-Yellow-White-Zinc.webp)](https://engineeringhardware.com/product/din912-asme-ansi-hex-socket-head-cap-screw-m27-grade10-9-12-9-hdg-black-yellow-white/) Socket Head Cap & Allen Screws ### [DIN912/ASME/ANSI Hex Socket Head Cap Screw M27 Grade10.9/12.9 HDG Black/Yellow/White Zinc](https://engineeringhardware.com/product/din912-asme-ansi-hex-socket-head-cap-screw-m27-grade10-9-12-9-hdg-black-yellow-white/) Hexagon Head · DIN **US$0.12**MOQ 1,000 pieces [![Factory Supply Fastener Steel Hexagon Socket Cap with Straight Thread 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