By across-flats size, measured on the fastener rather than read off the bolt diameter. Then by standard, since a metric spanner will not fit an imperial nut of a similar dimension.
The open jaw starts a nut and runs it down quickly. The ring end grips all six flats for the final tighten. One spanner covers both stages of the same fastener.
Metric from 6mm, 7mm, 8mm and 9mm upward, and imperial including 1-1/4 inch and 1-3/8 inch. The size is stated per spanner rather than by range.
One with more handle behind the same across-flats size, which gives leverage on a tight fastener and reach past an obstruction that would block a standard spanner.
A set covers a size ladder without gaps, which matters because a missing size is always the one the job needs. A 14 piece imperial set covers the common range.
Across-flats size, standard and overall length per spanner, which together decide whether it fits the fastener and reaches it.
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A combination spanner carries an open jaw at one end and a ring at the other, both cut to the same across-flats size. That is the whole reason it exists: the open end starts a nut and runs it down quickly, and the ring end goes on for the final tighten where all six flats have to be gripped.
Across-flats size is therefore the only figure that identifies a spanner, and it is measured on the fastener rather than read off the bolt diameter. A metric spanner will not fit an imperial nut of a similar dimension, so the standard is established before the size is looked up. Reading the standard first also narrows a 431 line leaf faster than any other filter on it.
The range runs metric from 6mm, 7mm, 8mm and 9mm upward and imperial to 1-1/4 inch and 1-3/8 inch. Long pattern spanners put more handle behind the same size, which gives leverage on a tight fastener and reach past an obstruction. Length is stated per spanner rather than being implied by the size, so two spanners at the same size can be compared.
Buying by the set covers a ladder without gaps, which matters because a missing size is the one the job needs. A 14 piece imperial set covers the common range. For an unmarked fastener, a photo with a rule beside it sent to 07754288583 on WhatsApp identifies the size. Sets are also the cheaper route to a full ladder than filling it one size at a time as jobs arrive.
| Model No | RCW27 |
|---|---|
| Brand | Premier |
| Length | 330mm |
| Nett Weight | 0.65kg |
| Set Model No(s) | n/a |
By across-flats size, measured on the fastener rather than read off the bolt diameter. Then by standard, since a metric spanner will not fit an imperial nut of a similar dimension.
The open jaw starts a nut and runs it down quickly. The ring end grips all six flats for the final tighten. One spanner covers both stages of the same fastener.
Metric from 6mm, 7mm, 8mm and 9mm upward, and imperial including 1-1/4 inch and 1-3/8 inch. The size is stated per spanner rather than by range.
One with more handle behind the same across-flats size, which gives leverage on a tight fastener and reach past an obstruction that would block a standard spanner.
A set covers a size ladder without gaps, which matters because a missing size is always the one the job needs. A 14 piece imperial set covers the common range.
Across-flats size, standard and overall length per spanner, which together decide whether it fits the fastener and reaches it.
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