Mechanics tool sets: compare coverage, not piece count

Look at the contents behind the piece count

A large set can contain useful drive sizes, shallow and deep sockets, duplicate accessories and many small bits. Another set can contain fewer pieces but cover your normal fasteners more completely. Neither is automatically better. The right comparison begins with the equipment you maintain and the sizes, geometries and access problems it presents.

Take ten recurring jobs from your own workload. List the fastener sizes and types, awkward locations and tools you repeatedly borrow. This becomes a buying brief. It is more useful than deciding in advance that a set needs 400 or 700 pieces.

Write each requirement as a complete combination: for example, “13 mm, six-point, deep socket, appropriate drive and hand use,” rather than only “13 mm socket.” A shallow socket and deep socket of the same size solve different access problems. Having that size in an incompatible drive does not necessarily complete the job if the adapter makes the assembly too tall.

Keep the list tied to work you expect to perform. A portable service kit and a workshop master set need different storage and duplication. Duplicate commonly used pieces can be valuable when two technicians work simultaneously; dozens of unused bits can add count without helping either technician. The question is what the duplication accomplishes.

Use a coverage matrix

Tekton’s socket program separates drive size, units, depth, point geometry and actual ranges. That structure makes a useful comparison framework even when buying a different brand. Do not infer that a published range includes every intermediate size: compare the itemized contents.

Count complete requirements before counting pieces

For an illustrative comparison, suppose your job list contains 20 distinct requirements. Set A covers 17 and Set B covers 14, even though Set B contains more total pieces. Their unweighted coverage is 17/20 = 85% and 14/20 = 70%. This is a transparent planning calculation, not a quality rating or a comparison of the CRAFTSMAN and Husky sets below.

Some missing requirements matter more than others. Mark essential items as must-have rather than letting a percentage hide a critical gap. A set with 95% coverage can still be unsuitable if the missing tool is needed for every service visit. Record the cost and availability of filling each gap, including any special retention or storage requirements.

Match the tool to the fastener

Tekton’s 6-point versus 12-point guidance recommends matching a 12-point fastener with a 12-point tool and favors 6-point tools on 6-point fasteners where substantial force is involved. This is manufacturer guidance, not evidence that one geometry wins every access situation.

Also distinguish hand-drive sockets from sockets explicitly rated for impact use. A set of shiny hand sockets should not be assumed suitable for an impact wrench. Check the actual tool markings and manufacturer instructions. Geometry, clearance and tool rating are separate questions; getting one right does not excuse another mismatch.

Metric and inch sizes are not a universal substitution system. For example, 1/2 inch is exactly 12.7 mm, which differs from 13 mm by 0.3 mm. That arithmetic does not describe the tools’ actual manufacturing clearances or authorize interchangeability. Use the specified fastener profile and size rather than choosing whichever near-match feels convenient.

Impact compatibility applies to the entire accessory chain: socket, extension, joint, reducer and retention—not only the socket at the end. An impact-rated socket does not turn an unapproved adapter into an impact accessory. A larger drive also does not increase the rating of a smaller component connected through a reducer.

A socket must fit the surrounding space

“Deep” is not a standardized promise of unlimited stud clearance. Compare the internal cavity as well as external length. Likewise, an unusually thin wall can improve access but should not be assumed suitable for the same loading as a different tool. Use the manufacturer’s application ratings instead of extrapolating from appearance.

Tekton’s impact-socket documentation separately describes shoulders, socket wells and drive retention. These are useful specification categories; they are not proof that another brand’s socket shares the same design or performance.

Ratchet tooth count is only one part of access

For a simple evenly spaced single-tooth-indexing ratchet, the geometric increment is 360° divided by the tooth count. Thus 72 teeth correspond to 5°, 90 to 4° and 120 to 3°. These are ideal indexing angles, not measured minimum handle movement under load. Actual mechanisms may use multiple pawls or a manufacturer-defined effective engagement count, so compare the published swing specification.

A smaller angle is useful only if the head and socket assembly reach the fastener and have room to move. Compare head width and thickness, handle shape and reversal access. Do not infer strength or service life from tooth count alone. Also separate ratchet action from wrench repositioning: a 12-point wrench may offer more placement orientations on an appropriate fastener, but that is a different mechanism from a ratchet’s internal indexing.

Storage affects how much of the set gets used

A blow-molded case can work well for occasional transport but may be awkward inside a service cart. Drawer-ready trays can make missing tools obvious yet consume more storage. A mobile technician also has to carry the set through doorways, stairs and a crowded jobsite. Compare the loaded case dimensions and weight with that use.

Check whether each tool has a readable size marking and a defined storage position. Consider replacement availability for frequently lost pieces and whether an extra tray can be added later. These practical questions deserve space beside chrome finish and piece count in a purchase decision.

Compare the CRAFTSMAN and Husky kit contents

The linked CRAFTSMAN 728-piece and Husky 432-piece kits offer two sets to compare. Their different counts do not establish which has better coverage, durability or value. Open the current itemized contents and identify the exact model and package before completing the matrix above. We have not bench-tested these sets.

Use a three-column purchase sheet: required tools, included tools and additional tools to buy. Add storage and any separate torque or impact tools your jobs require. A nominally cheaper kit can cost more once the missing sizes are supplied; a larger kit can be unnecessary if much of it duplicates tools already owned.

A short pre-order checklist

• Exact model number and itemized contents—not only the headline count.
• Metric/SAE, drive sizes, depths and point geometry for recurring work.
• Any omitted intermediate sizes and special fastener types.
• Hand-drive versus impact ratings.
• Extensions, joints and wrenches that solve real access problems.
• Storage fit, carrying weight and individual replacement availability.
• Current warranty terms and seller support, verified before ordering.

Keep precision tightening separate from general tool coverage: see torque wrench selection and calibration. If air tools are part of the upgrade, use compressor sizing to confirm that the shop can support them. A larger tool collection is valuable only when it makes the work more complete and dependable.

Mechanics tool set questions