--- title: "Stainless Steel DIN7991 Hex Socket Countersunk Head Flat Head Machine Screw, Allen Bolt Metric Thread" description: "Stainless Steel DIN7991 Hex Socket Countersunk Head Flat Head Machine Screw, Allen Bolt… — Countersunk, Plow & Elevator Bolts." url: https://engineeringhardware.com/product/stainless-steel-din7991-hex-socket-countersunk-head-flat-head-machine-screw-allen/ source: Engineering Hardware & Fasteners --- # Stainless Steel DIN7991 Hex Socket Countersunk Head Flat Head Machine Screw, Allen Bolt Metric Thread [![Stainless Steel DIN7991 Hex Socket Countersunk Head Flat Head Machine Screw, Allen Bolt Metric Thread](https://img.engineeringhardware.com/Stainless-Steel-DIN7991-Hex-Socket-Countersunk-Head-Flat-Head-Machine-Screw-Allen-Bolt-Metric-Thread.webp)](https://img.engineeringhardware.com/Stainless-Steel-DIN7991-Hex-Socket-Countersunk-Head-Flat-Head-Machine-Screw-Allen-Bolt-Metric-Thread.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Bolts › Countersunk, Plow & Elevator Bolts](https://engineeringhardware.com/fastener-products/bolts/countersunk-plow-elevator-bolts/) Updated 2026-11-03 · [Markdown version](https://engineeringhardware.com/product/stainless-steel-din7991-hex-socket-countersunk-head-flat-head-machine-screw-allen.md) Model no. **M1.6-M16** | **US$0.12**1,000–9,999 pieces | **US$0.012**10,000–49,999 pieces | **US$0.0012**50,000+ pieces | | --- | --- | --- | MOQ 1,000 pieces · Final price confirmed in your quote - **Material:** Stainless Steel - **Head Style:** Counter Sunk Bolt - **Standard:** DIN, GB, ANSI, JIS - **Grade:** 4.8 - **Sizes:** M1.6-M16 - **Head Type:** Hex Head, Flat Head, Csk Head, Round Head - **Packing:** Bulk Packing, Small Box, Plastic Box - **Surface:** Plain, Galvanzied, HDG, Nickel Plated, Ruspert Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Stainless%20Steel%20DIN7991%20Hex%20Socket%20Countersunk%20Head%20Flat%20Head%20Machine%20Screw%2C%20Allen%20Bolt%20Metric%20Thread%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fstainless-steel-din7991-hex-socket-countersunk-head-flat-head-machine-screw-allen%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 | Stainless Steel | | Type | Countersunk Head | | Model NO. | M1.6-M16 | | Groove | Socket | | Connection | Common Bolt | | Head Style | Counter Sunk Bolt | | Standard | DIN, GB, ANSI, JIS | | Grade | 4.8 | | Sizes | M1.6-M16 | | Head Type | Hex Head, Flat Head, Csk Head, Round Head | | Packing | Bulk Packing, Small Box, Plastic Box | | Surface | Plain, Galvanzied, HDG, Nickel Plated, Ruspert | | Thread | a Thread Ab Thread Machine Thread Cutting Thread | | Drive | Philips, Square, Torx, Socket, Slotted, Star | | Delivery Time | 15-30 Days | | Stock | 12000 Specifications | | Transport Package | Carton+Pallet | | Specification | M1.6-M16 | | Origin | China | | HS Code | 7318150000 | | Production Capacity | 45000 Ton/Year | | Spec | DIN, ISO, ANSIB, JIS, Drawing, Sample Standard: DIN7985, DIN965, DIN84, DIN963, ISO14583, ISO14581, ISO14579, ISO14584 Head: Raised cheese Hd., Countersunk Hd., Pan Hd., Raised Countersunk Hd., Cap Hd. Recess: Cross Recessed, Hexalobular Diameter : M2 ~ M12 ; #2 ~ 1/2'' Length: 3 ~ 60mm ; 5/32'' ~ 4'' Material : A2, A4, SUS 304, SUS 316 and carbon steel | | Category | [Countersunk, Plow & Elevator Bolts](https://engineeringhardware.com/fastener-products/bolts/countersunk-plow-elevator-bolts/) | ## Technical parameters | Name | SS304 SS316 DIN7991 Flat Socket Head Machine Screw | | --- | --- | | Head Type | flat head,pan head, hex head, truss head, button head, round head, slice head, oval head and so on | | Size | M1.6-M16 | | Thread Type | machine thread, fine thread, coarse thread, hi-low thread, cutting thread, reverse thread etc. | | Material | carbon steel, stainless steel | | Grade | 201, 304, 316, 410 | | Surface | Plain, Galvanzied, HDG, Nickel Plated, Ruspert coating, power coated and so on | | Standard | GB, DIN, ISO, ANSI/ASTM, BS, BSW, JIS etc | | Non-standards | OEM is available, according to drawing or samples | | Samples | Samples are free. | | Package | bulk packing, small box packing, plastic bag packing, plastic box packing or as customers' requirement. | | Payment | TT, L/C | ## Description Stainless Steel DIN7991 Hex Socket Countersunk Head Flat Head Machine Screw, Allen Bolt Metric Thread is part of our countersunk, plow & elevator bolts range (Bolts). ### Key details - **Type:** Countersunk Head - **Standard:** DIN, GB, ANSI, JIS - **Material:** Stainless Steel - **Grade:** 4.8 - **Thread:** a Thread Ab Thread Machine Thread Cutting Thread - **Head Type:** Hex Head, Flat Head, Csk Head, Round Head - **Head Style:** Counter Sunk Bolt - **Groove:** Socket Available configurations include material, head style, standard, grade and sizes. 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$0.0012 – 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 Stainless Steel DIN7991 Hex Socket Countersunk Head Flat Head Machine Screw, Allen Bolt Metric Thread? The listed minimum order is 1,000 pieces, at US$0.0012 – 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 1,000–9,999 pieces; US$0.012 for 10,000–49,999 pieces; US$0.0012 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 Stainless Steel DIN7991 Hex Socket Countersunk Head Flat Head Machine Screw, Allen Bolt Metric Thread? Type: Countersunk Head; Standard: DIN, GB, ANSI, JIS; Material: Stainless Steel; Grade: 4.8; Thread: a Thread Ab Thread Machine Thread Cutting Thread; Head Type: Hex Head, Flat Head, Csk Head, Round Head. 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 sizes. 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, plow & elevator bolts are available? The Countersunk, Plow & Elevator Bolts category lists 533 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/bolts/countersunk-plow-elevator-bolts/](https://engineeringhardware.com/fastener-products/bolts/countersunk-plow-elevator-bolts/) 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, Plow & Elevator Bolts →](https://engineeringhardware.com/fastener-products/bolts/countersunk-plow-elevator-bolts/) [![DIN7991 A2-70 Hexagon Socket Countersunk Head Screws Flat Head Bolt Hex Socket Csk Head Machine Screw](https://img.engineeringhardware.com/DIN7991-A2-70-Hexagon-Socket-Countersunk-Head-Screws-Flat-Head-Bolt-Hex-Socket-Csk-Head-Machine-Screw.webp)](https://engineeringhardware.com/product/din7991-a2-70-hexagon-socket-countersunk-head-screws-flat-head-bolt-hex-socket-csk/) Countersunk, Plow & Elevator Bolts ### [DIN7991 A2-70 Hexagon Socket Countersunk Head Screws Flat Head Bolt Hex Socket Csk Head Machine Screw](https://engineeringhardware.com/product/din7991-a2-70-hexagon-socket-countersunk-head-screws-flat-head-bolt-hex-socket-csk/) Round Head · DIN **US$0.06 – 0.60**MOQ 1,000 pieces [![M3 M4 M5 M6 Anodized Color Aluminum Alloy Flat Hex 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