--- product_id: 78545826 title: "Master Lock Pro Series - (4) Hidden Shackle Padlocks Keyed Alike 6271KA-4" brand: "master lock" price: "2159 kr" currency: DKK in_stock: true category: "Master Lock" url: https://www.desertcart.dk/products/78545826-master-lock-pro-series-4-hidden-shackle-padlocks-keyed-alike store_origin: DK region: Denmark --- # 4 keyed-alike high-security padlocks 6-pin re-keyable anti-pick cylinder 3/8in hardened boron alloy shackle Master Lock Pro Series - (4) Hidden Shackle Padlocks Keyed Alike 6271KA-4 **Brand:** master lock **Price:** 2159 kr **Availability:** ✅ In Stock ## Summary > 🔒 Elevate your security game with pro-level protection that’s always one key away. ## Quick Answers - **What is this?** Master Lock Pro Series - (4) Hidden Shackle Padlocks Keyed Alike 6271KA-4 by master lock - **How much does it cost?** 2159 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/78545826-master-lock-pro-series-4-hidden-shackle-padlocks-keyed-alike) ## Best For - master lock enthusiasts ## Why This Product - Trusted master lock brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **One Key, Four Locks:** Simplify access with 8 keys that open all 4 padlocks—no fumbling, no hassle. - • **Hidden Shackle Armor:** Reinforced zinc die-cast body conceals the shackle for unbeatable cut & pry resistance. - • **Pick-Proof Precision:** Advanced 6-pin cylinder with spool pins makes lock picking virtually impossible. - • **Lifetime Peace of Mind:** Backed by Master Lock’s limited lifetime warranty—security that lasts as long as you need it. - • **Industrial-Grade Toughness:** 3/8in hardened boron alloy shackle resists bolt cutters and harsh outdoor conditions. ## Overview The Pro Series 6271KA-4 pack includes four heavy-duty, keyed-alike padlocks featuring a concealed 3/8in hardened boron alloy shackle within a reinforced zinc die-cast body. Designed for commercial and industrial use, these locks offer superior resistance to cutting, prying, and picking with a re-keyable 6-pin cylinder. Each pack comes with 8 keys and is backed by a limited lifetime warranty, making it the ultimate choice for streamlined, high-security applications. ## Description FITMENT: To ensure proper fit measure the hasp/latch on your trailer door. Size dimensions are illustrated in the provided schematic. Also CHECK the depth of the hole on the hasp. If the center of the hole is more than 13/16 (20mm) from the edge the pin will not engage. The depth on the lock would be too shallow. Many times latches are poorly manufactured and the holes are carelessly placed off center, thus creating fitment issues. You can modify the hasp if you are inclined. These locks offer Ideal protection against bolt cutter attacks. The extra heavy duty 2-7/8" wide padlocks are ideal for all outdoor applications when needing multiple locks that utilize ONLY one key. The same key opens all locks. Each lock comes with two keys, therefore you will receive a total of eight keys with the purchase of this 4 pack. ProSeries Reinforced Zinc Die-CastWhy Zinc Castings? For countless decorative and functional applications no other material and process can match the properties and economics of zinc die casting.Toughness: Few materials provide the strength and toughness of zinc alloys. Impact resistance is significantly higher than cast aluminum alloys, plastics, and grey cast iron.Strength & Ductility: Zinc alloys offer high strengths (to 60,000 psi) and superior elongation for strong designs and formability for bending, crimping and riveting operations.Anti-Sparking: Zinc alloys are non-sparking and suitable for hazardous location applications such as coal mines, tankers and refineries ## Features - Four (4) high security ProSeries Padlocks designed for Commercial/Industrial applications. Locks are keyed alike w/ 8 total keys. 2-7/8" (73mm) wide reinforced zinc die-cast lock body (see more product details below). Ideal for transportation, vending and many other applications. - FITMENT: Please see more product details below to help ensure these locks will work. - ATTENTION: If you order two 4-packs they will NOT necessarily be keyed the same. To ensure you get two 4-packs keyed alike, you must order the 8-pack. - See image for reference - Shackle Dimensions - A: 3/8in (9mm) B: 19/32in (15mm) C: 1-23/32in (44mm). Lock body conceals the shackle! Fully shielded 3/8 (9mm) diameter hardened boron alloy shackle offers impossible to cut and pry resistance features. - High security, re-keyable 6-pin cylinder with spool pins is virtually impossible to pick. Lifetime guarantee. This lock is also available with the BumpStop Technology. Search 6271NKA in desertcart's search window. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01MF7LJSA | | Additional Features | Key Lock | | Best Sellers Rank | #48,982 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #119 in Keyed Padlocks | | Brand Name | Master Lock | | Color | Silver | | Control Method | App | | Controller Type | Hand Control | | Customer Reviews | 4.6 4.6 out of 5 stars (2,592) | | Finish Types | Polished | | Included Components | Key | | Item Dimensions | 3 x 3 x 2.75 inches | | Item Weight | 4 Pounds | | Lock Type | Key Lock | | Manufacturer | Master Lock | | Manufacturer Part Number | 6271KA-4 | | Manufacturer Warranty Description | MASTER LOCK PRODUCT WARRANTY Limited Lifetime Warranty Master Lock Company LLC (“Master Lock”) grants the following warranty: If this product or any part of the product fails due to a defect in materials or workmanship at any time during the life of the product, Master Lock will, at its own discretion, repair or replace the product or part free of charge. Simply contact Master Lock at www.masterlo… | | Material Type | Cast Steel | | Model Name | 6271 | | Model Number | 6271KA-4 | | Number of Pieces | 1 | | Recommended Uses For Product | Security | | Shape | Rectangular | | Style Name | Industrial | | UPC | 071649170768 | | Unit Count | 4 Count | ## Product Details - **Brand:** Master Lock - **Item dimensions L x W x H:** 3 x 3 x 2.75 inches - **Lock Type:** Key Lock - **Material:** Cast Steel - **Special Feature:** Key Lock ## Images ![Master Lock Pro Series - (4) Hidden Shackle Padlocks Keyed Alike 6271KA-4 - Image 1](https://m.media-amazon.com/images/I/71B211NwLrL.jpg) ## Available Options This product comes in different **Size** options. ## Frequently Bought Together - Master Lock Pro Series - (4) Hidden Shackle Padlocks Keyed Alike 6271KA-4 - Master Lock Chrome Hasp Lock, Heavy Duty Hidden Shackle Lock and Hasp, Solid Steel Lock for Trucks, Trailers, or Vans, 9 Inches Wide, 770 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.dk/products/78545826-master-lock-pro-series-4-hidden-shackle-padlocks-keyed-alike](https://www.desertcart.dk/products/78545826-master-lock-pro-series-4-hidden-shackle-padlocks-keyed-alike) --- *Product available on Desertcart Denmark* *Store origin: DK* *Last updated: 2026-07-08*