ISO 1479 ST4.2×38 Hex Head Tapping Screw4 combinations of material, property class and finish supplied in this size.
- Standard
- ISO 1479 · 2011
- Thread
- ST4.2 · pitch 1.4 mm
- Length under head
- 38 mm · 36.7–39.3 mm to ISO 1479 product grade A
- Drive
- 7 mm spanner · e 7.59 mm
- Head height
- 3 mm
- Weight
- 4.76 kg per 1 000 pieces · Theoretical, from nominal geometry — confirm before ordering210 pieces per kg
- Also named
- GB/T 5285
Supplied to ISO 1479 ST4.2×38 — the figures shown here match GB/T 5285. All 2 record the same figures in this size. Compared on the columns shown here only — product grade, tolerance class, length range, material and property-class references are set by each standard separately. We produce to whichever one your drawing calls out. Compare all sizes →
Order ST4.2×38
Set a quantity on as many rows as you need. Not listed? We make to your drawing — send it with the enquiry.
Every standard listed here records the same figures at ST4.2×38. Your choice is carried into the inquiry and the quotation.
| Material | Class | Finish | Quantity | Net weight |
|---|---|---|---|---|
| Carbon Steel | — | Zinc Plated | — | |
| Carbon Steel | — | Dacromet | — | |
| Stainless Steel | — | Passivated | — | |
| Stainless Steel | — | Plain | — |
Dimensions at ST4.2×38
one row per dimension| Dimension | ISO 1479Current | GB/T 5285Current |
|---|---|---|
| Thread PitchP (mm) | 1.4 | 1.4 |
| Thread Runout (max)a (mm) | 1.4 | 1.4 |
| Width Across Flats (max)s (mm) | 7 | 7 |
| Width Across Flats (min)s min (mm) | 6.78 | 6.78 |
| Width Across Corners (min)e (mm) | 7.59 | 7.59 |
| Nominal Head Heightk (mm) | 3 | 3 |
| Head Height (min)k (mm) | 2.6 | 2.6 |
| Radius (min)r (mm) | 0.2 | 0.2 |
| Point Length — C (ref.)y (mm) | 3.7 | 3.7 |
| Point Length — F (ref.)y (mm) | 2.8 | 2.8 |
| Point Length — R (ref.)y (mm) | 3.2 | 3.2 |
Plating adds thickness — state the finish on the order.
Other lengths in ST4.2
All sizes →| Size | kg per 1 000 pieces | |
|---|---|---|
| ST4.2×25 | 3.45 | open |
| ST4.2×32 | 4.16 | open |
| ST4.2×38 | 4.76 | this page |
| ST4.2×45 | 5.47 | open |
| ST4.2×50 | 5.98 | open |
ST4.2 x 9.5ST4.2 x 13ST4.2 x 16ST4.2 x 19ST4.2 x 22ST4.2 x 25ST4.2 x 32ST4.2 x 45ST4.2 x 50