(M3.5) is one of the standard coarse-thread sizes for hexalobular socket pan head screws under ISO 14583. The sections below reproduce the dimensional row, list the matching tools and hole sizes, and summarize where this size is normally specified.
(M3.5) Dimensional Row (ISO 14583)
| Size | Pitch P (mm) | a_max (mm) | b_min (mm) | d_a_max (mm) | Head diameter dk (mm) | Head height k (mm) | r_min (mm) | rf (mm) | x_max (mm) | tt (mm) | t (mm) | A_ref (mm) | Length range l (mm) | Reference standard |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (M3.5) | 0.6 | 1.2 | 38 | 4.1 | 7 | 2.6 | 0.1 | 6 | 1.5 | T15 | 1.2 | 3.35 | 5~35 | ISO 14583 |
Spanner & Drive for (M3.5) Hexalobular Socket Pan Head Screws
Drive geometry for (M3.5) Hexalobular Socket Pan Head Screws is given by the row above; match the tool to the listed values.
(M3.5) Hexalobular Socket Pan Head Screws Weight
A steel (M3.5) hexalobular socket pan head screws at the listed 535 mm length weighs approximately 162 g each — about 162 kg per 1,000 pieces. Stainless A2/A4 weighs roughly the same (density 7.9–8.0 g/cm³).
Actual weight varies slightly with head form, thread and finish; use this figure for freight estimation only.
Installation Tips for (M3.5) Hexalobular Socket Pan Head Screws
- At (M3.5) the joint is sensitive to over-torque — use a torque-limiting driver and check the head doesn't bury into a softer counterpart.
Mating Parts for (M3.5)
For (M3.5), pair with a (M3.5) hex nut (ISO 4032 / DIN 934) and, where used, a (M3.5) flat washer (ISO 7089 / DIN 125A) under the head and under the nut.
Custom manufacturing · Made to drawing
Need hexalobular socket pan head screws in a size this table does not list?
This page covers (M3.5) hexalobular socket pan head screws. Lengths and thread lengths outside the standard table are the commonest request, followed by a drive the standard does not offer and a head marked with your own part number. Made by cold heading or warm forging.
Minimum order from 2,000 pieces; samples within 7 days of drawing approval.

