Ordering short chipboard screws: check diameter, length, head and finish

If a shopping list just says “short chipboard screws”, there is room to order the wrong item even when two boxes look alike. Write down the diameter, length, head and finish separately. Then use the complete maker reference to check that the four details describe the same catalogue row.

Read both numbers on the same line

In the Samac boxed woodscrew range, QQ525CHIP1000 is the 5 × 25 mm entry. Here 5 mm is the nominal diameter and 25 mm is the nominal length. A screw specified as 4.5 × 25 mm has the same stated length but a different diameter. A screw specified as 5 × 30 mm keeps the diameter and changes the length. Search for the full code and check the two dimensions against the label when the order arrives.

Write head shape and drive as separate checks

Samac puts this reference in its Pozi countersunk range. Countersunk describes the head shape. Pozi describes the recess that takes the driver. If you are matching a drawing or an existing screw, record the seating requirement and the drive separately. A cross-shaped recess in a photograph leaves the bit size and fit to confirm on the supplied screw or its packaging.

Record the finish by name

ZYP stands for zinc and yellow passivated in this range. The pictured gold tone can help you find the right shelf label, but use the written finish on the label to check an order. If the job specifies a particular material or corrosion rating, compare that requirement with the applicable product documentation before choosing a screw. Matching a colour or the letters ZYP leaves that check open.

Send an order line someone can verify

For this catalogue example, write “Samac QQ525CHIP1000, 5 mm diameter × 25 mm length, Pozi countersunk, zinc and yellow passivated.” Add the material and seating requirements for your job on a separate line. Keep the required number of screws separate from the model reference, and confirm the quantity per order with the seller. If any label details differ, resolve the difference before treating the item as a match.

Buy now: Samac QQ525CHIP1000 5 × 25 mm ZYP chipboard screws