How to Choose the Right eitech Bracket for Your Build

By eitech Metallbaukasten | Published: 2026-10-16

Category: Buying Guides

Pick the right eitech bracket by matching hole count, shape, and load needs to your model. A practical buying guide for spare parts and upgrades.

Quick answer

For most eitech builds, start with a 5x1-hole bracket when you need a compact, single-plane joint, and step up to a longer flat bar when you need to span multiple holes or carry more load. If you are buying a set rather than a single part, the crawler crane / construction crane gives you a working model plus a supply of brackets and bars to learn with.

Match the bracket to the joint, not the model

Brackets and flat bars are not interchangeable. A bracket joins two parts at an angle or reinforces a corner, while a flat bar runs straight across a gap or along an edge. Before you order, look at the joint you are fixing: if two beams meet at 90 degrees, you want a bracket; if you are bridging a gap or extending a beam, you want a flat bar. The 5x1-hole bracket is a five-hole, one-hole-wide piece, so it is best for small corner ties where a longer bar would overhang. A 25-hole flat bar is the opposite: it is for long runs where you need many fastening points along a single line. Buying the wrong shape is the most common reason a part sits unused in the box.

Hole count and length: the numbers that decide fit

eitech parts are sized by hole count, and that number tells you how far the part reaches. A 5x1-hole bracket covers five holes in one direction and one hole across, so it suits short, local reinforcement. A 7-hole bent flat bar covers seven holes and has a bend, which lets it follow a corner or an angled frame without extra pieces. A 25-hole flat bar covers twenty-five holes, so it is for long spans, chassis rails, or boom sections. If your model already has a hole pattern, count the holes between the two points you need to connect and choose the part that matches or slightly exceeds that count. A part that is too short will not reach; a part that is too long will stick out and may foul moving parts.

Material and finish: what the catalog does and does not tell you

All three parts here are from the eitech Manufaktur range, which is the line to look at when you want individual components rather than a full set. The catalog lists SKU, variant, and hole count, but it does not list load ratings, torque limits, or coating thickness. That is a real limitation: if you are building something that must hold a lot of weight or survive outdoor use, you cannot pick a bracket from a number in the listing. Instead, use the hole count and shape to choose the right geometry, then test the joint by hand before you commit to the full build. For outdoor or damp environments, the same advice as for any eitech metal part applies: keep bare steel dry and accept that you may need to replace parts over time.

When to buy a set instead of individual brackets

If you are still deciding what to build, a set gives you a working model and a stock of brackets and bars to experiment with. The crawler crane / construction crane set 00018 is a good example: it builds three different models, including two crawler crane versions with a lockable winch and a rotating base with a bottle hook, plus a tower crane alternative. The main model also has a tilting boom controlled by the winch. That range of mechanisms means you will handle brackets in several orientations, which is faster than guessing from a parts list. Buy individual brackets when you already know the exact joint you are repairing or extending; buy the set when you want to learn how the parts work together first.

Decision rules for buying eitech brackets

Corner or angle joint: If two parts meet at an angle and you need a short, local connection, choose a bracket such as the 5x1-hole. Count the holes across the joint; a five-hole bracket covers short spans without overhanging. Pick a bracket when the joint is the priority, not the span.
Long span or straight run: If you are bridging a gap or stiffening a long edge, choose a flat bar. The 25-hole flat bar covers twenty-five holes, so it suits chassis rails and boom sections where a short bracket would need several pieces. Pick a flat bar when distance between fastening points is the priority.
Angled or non-square frame: If the frame is bent or the corner is not a clean 90 degrees, a bent flat bar such as the 7-hole bent lets you follow the angle without adding extra brackets or forcing the parts. Pick a bent part when the geometry is irregular and you want fewer connections.
Unknown model or first build: If you do not yet know which joints you will need, buy a set that builds several models, such as the crawler crane / construction crane. You get a working mechanism and a stock of brackets and bars to compare. Buy the set first, then order singles once you know the exact joint.

Parts and sets that cover most bracket decisions

Bracket 5x1-hole: The eitech Bracket 5x1-hole is a five-by-one-hole bracket from the eitech Manufaktur line, SKU 01203, Standard variant. Use it for compact corner joints and local reinforcement where a longer bar would overhang or block movement.
Flat bar 7-hole bent: The eitech Flat bar 7-hole bent is a seven-hole flat bar with a bent shape, SKU 01006_B, Standard option, Manufaktur range. The bend lets it follow an angled frame or corner without adding extra brackets, so it is useful when your joint is not a clean 90 degrees.
Flat bar 25-hole: The eitech Flat bar 25-hole is a Standard variant with item code 01011, Manufaktur tag, intended for eitech construction sets and similar model-building projects. Choose it for long spans such as chassis rails or boom sections where you need many fastening points along one line.
Crawler crane / construction crane: The metal construction set 00018 builds three different models, including two crawler crane versions with a lockable winch and a rotating base with a bottle hook, plus a tower crane alternative; the main model has a tilting boom via the winch. A set like this gives you a working mechanism plus a supply of brackets and bars, which is the fastest way to learn which part fits which joint before buying singles.

Who should buy which

Best for

Builders who already know the joint they are repairing or extending and want a specific part
Modelers who need a compact corner bracket for a small frame or a short reinforcement
Anyone building a long chassis, boom, or rail who needs many holes along one line

Not for

Shoppers who want a complete model with instructions and a range of mechanisms; choose a set instead
Builders who need published load ratings or coating specifications; the catalog does not list them
Anyone expecting a single bracket to replace a long flat bar across a wide span