--- title: "DIN 912 DIN7991 High Temperature Hydrolysis Resistant Peek Plastic Cylindrical/Countersunk Allen Head Hexagon Socket Machine Screw" description: "DIN 912 DIN7991 High Temperature Hydrolysis Resistant Peek Plastic Cylindrical/Countersu… — Countersunk & Flat-Head Machine Screws." url: https://engineeringhardware.com/product/din-912-din7991-high-temperature-hydrolysis-resistant-peek-plastic-cylindrical/ source: Engineering Hardware & Fasteners --- # DIN 912 DIN7991 High Temperature Hydrolysis Resistant Peek Plastic Cylindrical/Countersunk Allen Head Hexagon Socket Machine Screw [![DIN 912 DIN7991 High Temperature Hydrolysis Resistant Peek Plastic Cylindrical/Countersunk Allen Head Hexagon Socket Machine Screw](https://img.engineeringhardware.com/DIN-912-DIN7991-High-Temperature-Hydrolysis-Resistant-Peek-Plastic-Cylindrical-Countersunk-Allen-Head-Hexagon-Socket-Machine-Screw.webp)](https://img.engineeringhardware.com/DIN-912-DIN7991-High-Temperature-Hydrolysis-Resistant-Peek-Plastic-Cylindrical-Countersunk-Allen-Head-Hexagon-Socket-Machine-Screw.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/din-912-din7991-high-temperature-hydrolysis-resistant-peek-plastic-cylindrical.md) Model no. **Cylindrical/Countersunk Head Socket Machine screw** | **US$0.36**10,000–29,999 pieces | **US$0.35**30,000–49,999 pieces | **US$0.34**50,000+ pieces | | --- | --- | --- | MOQ 10,000 pieces · Final price confirmed in your quote - **Head Style:** Hexagonal - **Standard:** DIN, GB, ANSI, BSW, JIS, GOST - **Grade:** 6.8 - **Head Type:** Hex, Allen, Flat, Cheese, Pan - **Flame Retardant Grade:** UL94 V-0 - **Material:** Peek - **Packing:** bulk in cartons (25kg Max.)+wood Pallet or according to customer special demand Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20DIN%20912%20DIN7991%20High%20Temperature%20Hydrolysis%20Resistant%20Peek%20Plastic%20Cylindrical%2FCountersunk%20Allen%20Head%20Hexagon%20Socket%20Machine%20Screw%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fdin-912-din7991-high-temperature-hydrolysis-resistant-peek-plastic-cylindrical%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. | Cylindrical/Countersunk Head Socket Machine screw | | --- | --- | | Groove | Hexagon | | Connection | Common Bolt | | Head Style | Hexagonal | | Standard | DIN, GB, ANSI, BSW, JIS, GOST | | Grade | 6.8 | | Certificate | ISO9001/ISO14001/ISO45001/RoHS | | Ingredient | Polyether Ether Ketone | | Head Type | Hex, Allen, Flat, Cheese, Pan | | Service | OEM ODM Custom Service | | Payment Term | Tt 30% Deposit | | Flame Retardant Grade | UL94 V-0 | | Operating Temperature | 260 ℃/500 ℉ | | Transport Package | 25kg | | Specification | BULK IN 25KGS CARTON/ PALLET | | Origin | Shagnhai | | HS Code | 7318150000 | | Production Capacity | 1000 Tonnes/Month | | Customization | Available | | Material | Peek | | Type | Cheese Head | | Packing | bulk in cartons (25kg Max.)+wood Pallet or according to customer special demand | | Leading Time | 20-30 days or based on order required | | Category | [Countersunk & Flat-Head Machine Screws](https://engineeringhardware.com/fastener-products/screws/countersunk-flat-head-machine-screws/) | ## Technical parameters | Product Name | DIN 912 DIN7991 High Temperature Hydrolysis Resistant Peek Plastic Cylindrical/Countersunk Allen Head Hexagon Socket Machine Screw | | --- | --- | | Standard: | ANSI/ASME B18.2.1 DIN931 DIN933 DIN960 DIN961 GB1228 GB30 GB5781 GB5782 GB5783 GB5785 GB5786 | | Size | M3, M4, M5, M6, M8, M10, M12, M14, M16, M18, M20 | | Material: | Polyether ether ketone | | Length | 6mm-100mm | | Head Type | Hex head, Socket head, Pan head, Countersunk head Etc | | Drive Type | Cross drive, star drive, slotted drive, thumb drive | | Application scenarios | Electronic appliances, Photovoltaic and semiconductor industries, Medical equipment, Aerospace | | Packing: | bulk in cartons (25kg Max.)+wood Pallet or according to customer special demand | | Leading Time : | 20-30 days or based on order required | ## Description DIN 912 DIN7991 High Temperature Hydrolysis Resistant Peek Plastic Cylindrical/Countersunk Allen Head Hexagon Socket Machine Screw is part of our countersunk & flat-head machine screws range (Screws). ### Key details - **Type:** Cheese Head - **Standard:** DIN, GB, ANSI, BSW, JIS, GOST - **Material:** Peek - **Grade:** 6.8 - **Head Type:** Hex, Allen, Flat, Cheese, Pan - **Head Style:** Hexagonal - **Groove:** Hexagon - **Connection:** Common Bolt Available configurations include head style, standard, grade, head type and flame retardant grade. 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$0.34 – 0.36 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 DIN 912 DIN7991 High Temperature Hydrolysis Resistant Peek Plastic Cylindrical/Countersunk Allen Head Hexagon Socket Machine Screw? The listed minimum order is 10,000 pieces, at US$0.34 – 0.36 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$0.36 for 10,000–29,999 pieces; US$0.35 for 30,000–49,999 pieces; US$0.34 for 50,000+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote. ### What are the main specifications of DIN 912 DIN7991 High Temperature Hydrolysis Resistant Peek Plastic Cylindrical/Countersunk Allen Head Hexagon Socket Machine Screw? Type: Cheese Head; Standard: DIN, GB, ANSI, BSW, JIS, GOST; Material: Peek; Grade: 6.8; Head Type: Hex, Allen, Flat, Cheese, Pan; Head Style: Hexagonal. 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, head type and flame retardant grade. 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/) [![M3-M10 DIN965 Stainless Steel Ss 304/316/410 Black Cross Recessed Countersunk Flat Head Screws Machine Screw](https://img.engineeringhardware.com/M3-M10-DIN965-Stainless-Steel-Ss-304-316-410-Black-Cross-Recessed-Countersunk-Flat-Head-Screws-Machine-Screw.webp)](https://engineeringhardware.com/product/m3-m10-din965-stainless-steel-ss-304-316-410-black-cross-recessed-countersunk-flat/) Countersunk & Flat-Head Machine Screws ### [M3-M10 DIN965 Stainless Steel Ss 304/316/410 Black Cross Recessed Countersunk Flat Head Screws Machine Screw](https://engineeringhardware.com/product/m3-m10-din965-stainless-steel-ss-304-316-410-black-cross-recessed-countersunk-flat/) Countersunk Head · DIN, GB, ANSI, BSW, JIS, GOST **US$0.012 – 0.036**MOQ 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