ISO 7050 ST3.5×9.5 Countersunk Tapping Screw7 combinations of material, property class and finish supplied in this size.
- Standard
- ISO 7050 · 2011
- Thread
- ST3.5 · pitch 1.3 mm
- Length under head
- 9.5 mm · 8.7–10.3 mm to ISO 7050 product grade A
- Head height
- 2.35 mm
- Weight
- 0.75 kg per 1 000 pieces · Theoretical, from nominal geometry — confirm before ordering1332 pieces per kg
- Also named
- GB/T 846
Supplied to ISO 7050 ST3.5×9.5 — the figures shown here match GB/T 846. 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 ST3.5×9.5
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 ST3.5×9.5. Your choice is carried into the inquiry and the quotation.
| Material | Class | Finish | Quantity | Net weight |
|---|---|---|---|---|
| Carbon Steel | — | Zinc Plated | — | |
| Carbon Steel | — | Dacromet | — | |
| Carbon Steel | — | Ruspert | — | |
| Carbon Steel | — | Phosphate | — | |
| Carbon Steel | — | Plain | — | |
| Stainless Steel | — | Plain | — | |
| Stainless Steel | — | Passivated | — |
Dimensions at ST3.5×9.5
one row per dimension| Dimension | ISO 7050Current | GB/T 846Current |
|---|---|---|
| Thread PitchP (mm) | 1.3 | 1.3 |
| Thread Runout (max)a (mm) | 2.6 | 2.6 |
| Theoretical Head Diameter (max)dk (mm) | 8.2 | 8.2 |
| Head Diameterdk (mm) | 7.3 | 7.3 |
| Head Diameter (min)dk min (mm) | 6.9 | 6.9 |
| Nominal Head Heightk (mm) | 2.35 | 2.35 |
| Radius (max)r (mm) | 1.4 | 1.4 |
| Recess Number | 2 | 2 |
| Type H Recess Width (ref.)m (mm) | 4.4 | 4.4 |
| Type H Penetration (max)t (mm) | 2.4 | 2.4 |
| Type H Penetration (min)t (mm) | 1.9 | 1.9 |
| Type Z / Socket Width (ref.)m/A (mm) | 4.1 | 4.1 |
| Type Z Penetration (max)t (mm) | 2.2 | 2.2 |
| Type Z Penetration (min)t (mm) | 1.75 | 1.75 |
| Point Length — C (ref.)y (mm) | 3.2 | 3.2 |
| Point Length — F (ref.)y (mm) | 2.5 | 2.5 |
| Point Length — R (ref.)y (mm) | 2.7 | 2.7 |
Plating adds thickness — state the finish on the order.
Other lengths in ST3.5
All sizes →| Size | kg per 1 000 pieces | |
|---|---|---|
| ST3.5×9.5 | 0.75 | this page |
| ST3.5×13 | 0.90 | open |
| ST3.5×16 | 1.03 | open |
| ST3.5×19 | 1.16 | open |
| ST3.5×22 | 1.29 | open |
ST3.5 x 13ST3.5 x 16ST3.5 x 19ST3.5 x 22ST3.5 x 25ST3.5 x 32
Nearby sizesST2.9 x 25