--- title: "DIN7991 Titanium Alloy Tc4 Countersunk Head Hexagon Socket Screws" description: "DIN7991 Titanium Alloy Tc4 Countersunk Head Hexagon Socket Screws — Countersunk & Flat-Head Machine Screws. MOQ 10,000 pieces, US$0.0144 – 0.12." url: https://engineeringhardware.com/product/din7991-titanium-alloy-tc4-countersunk-head-hexagon-socket-screws/ source: Engineering Hardware & Fasteners --- # DIN7991 Titanium Alloy Tc4 Countersunk Head Hexagon Socket Screws [![DIN7991 Titanium Alloy Tc4 Countersunk Head Hexagon Socket Screws](https://img.engineeringhardware.com/DIN7991-Titanium-Alloy-Tc4-Countersunk-Head-Hexagon-Socket-Screws.webp)](https://img.engineeringhardware.com/DIN7991-Titanium-Alloy-Tc4-Countersunk-Head-Hexagon-Socket-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/din7991-titanium-alloy-tc4-countersunk-head-hexagon-socket-screws.md) Model no. **DIN7991** | **US$0.12**10,000–49,999 pieces | **US$0.0936**50,000–99,999 pieces | **US$0.0432**100,000–199,999 pieces | **US$0.0144**200,000+ pieces | | --- | --- | --- | --- | MOQ 10,000 pieces · Final price confirmed in your quote - **Head Style:** Round - **Standard:** DIN, GB, ANSI, JIS - **Grade:** Ta2 - **Surface Treatment:** Zinc, Power Coating, Black Oxide, Dacromet, etc - **Thread:** Coarse or Fine - **Material:** Titanium/Titanium Alloy 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%20Titanium%20Alloy%20Tc4%20Countersunk%20Head%20Hexagon%20Socket%20Screws%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fdin7991-titanium-alloy-tc4-countersunk-head-hexagon-socket-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 | Model NO. | DIN7991 | | --- | --- | | Groove | Hexagon | | Connection | Common Bolt | | Head Style | Round | | Standard | DIN, GB, ANSI, JIS | | Grade | Ta2 | | Certification | ISO, RoHS, CE | | Delivery | Sea Freight, Air, Train, Express | | Service | Support Customized Service | | Samples | Free If It Is Available | | Surface Treatment | Zinc, Power Coating, Black Oxide, Dacromet, etc | | Inspection | Optical Screening Instrument | | Delivery Time | 10-15 Working Days | | Thread | Coarse or Fine | | Transport Package | Plastic Bag, Boxes and Cartons, Pallets, Customize | | Specification | M2-M24 | | Origin | China | | HS Code | 7318159090 | | Production Capacity | 2000000pieces/Year | | Customization | Available | | Material | Titanium/Titanium Alloy | | Type | Countersunk Head | | Shipping Cost | Contact the supplier about freight and estimated delivery time. | | Answer | Small orders can be supported if the product is in stock. | | Category | [Countersunk & Flat-Head Machine Screws](https://engineeringhardware.com/fastener-products/screws/countersunk-flat-head-machine-screws/) | ## Technical parameters | Standard | DIN7991 | | --- | --- | | Size | M2-M24 | | Material | Carbon Steel, Stainless Steel, Duplex, etc | | Plating | Zinc, Dacromet, Geomet, Ruspert, HDG, etc | | Note | Free samples but freight cost is paid by customers(when sample is in stock) Sample fee (when samples need to be customized) | ## Description DIN7991 Titanium Alloy Tc4 Countersunk Head Hexagon Socket Screws is part of our countersunk & flat-head machine screws range (Screws). ### Key details - **Type:** Countersunk Head - **Standard:** DIN, GB, ANSI, JIS - **Material:** Titanium/Titanium Alloy - **Grade:** Ta2 - **Thread:** Coarse or Fine - **Head Style:** Round - **Groove:** Hexagon - **Surface Treatment:** Zinc, Power Coating, Black Oxide, Dacromet, etc Available configurations include head style, standard, grade, surface treatment and thread. 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$0.0144 – 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 Titanium Alloy Tc4 Countersunk Head Hexagon Socket Screws? The listed minimum order is 10,000 pieces, at US$0.0144 – 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. ### How does the price change with quantity? Volume pricing: US$0.12 for 10,000–49,999 pieces; US$0.0936 for 50,000–99,999 pieces; US$0.0432 for 100,000–199,999 pieces; US$0.0144 for 200,000+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote. ### What are the main specifications of DIN7991 Titanium Alloy Tc4 Countersunk Head Hexagon Socket Screws? Type: Countersunk Head; Standard: DIN, GB, ANSI, JIS; Material: Titanium/Titanium Alloy; Grade: Ta2; Thread: Coarse or Fine; 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, surface treatment and thread. 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/) [![Stainless Steel A2 SS304 Torx Countersunk Head Machine Screw](https://img.engineeringhardware.com/Stainless-Steel-A2-SS304-Torx-Countersunk-Head-Machine-Screw.webp)](https://engineeringhardware.com/product/stainless-steel-a2-ss304-torx-countersunk-head-machine-screw/) Countersunk & Flat-Head Machine Screws ### [Stainless Steel A2 SS304 Torx Countersunk Head Machine Screw](https://engineeringhardware.com/product/stainless-steel-a2-ss304-torx-countersunk-head-machine-screw/) Countersunk Head · DIN, GB, ANSI, BSW, JIS, GOST, Per Customers'desire **US$0.0012 – 0.006**MOQ 5,000 pieces [![DIN964 Machine Screws, Stainless Steel Screws, DIN964 Oval Slotted Raised Countersunk Head Machine 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Slotted Countersunk Machine Screws Ta2 304 316 Stainless Steel](https://img.engineeringhardware.com/DIN-963-Slotted-Countersunk-Machine-Screws-Ta2-304-316-Stainless-Steel.webp)](https://engineeringhardware.com/product/din-963-slotted-countersunk-machine-screws-ta2-304-316-stainless-steel/) Countersunk & Flat-Head Machine Screws ### [DIN 963 Slotted Countersunk Machine Screws Ta2 304 316 Stainless Steel](https://engineeringhardware.com/product/din-963-slotted-countersunk-machine-screws-ta2-304-316-stainless-steel/) Countersunk Head · DIN, GB, JIS, GOST **US$0.024 – 0.12**MOQ 100 pieces **US$0.0144 – 0.12**MOQ 10,000 piecesGet a quote[WA](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20DIN7991%20Titanium%20Alloy%20Tc4%20Countersunk%20Head%20Hexagon%20Socket%20Screws%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fdin7991-titanium-alloy-tc4-countersunk-head-hexagon-socket-screws%2F)