Description
Hex Socket Head Cap Screw M4x16 Stainless Steel A2 — BOLTON SKU 70520.
About the 1233920 Hex Socket Cap Screw M4x16, A2
This 1233920 socket head cap screw is a cylindrical-head machine screw driven by an internal hexagon, supplied in the M4 × 16 mm size in A2 austenitic stainless steel. Hexagon socket head cap screws of this form are covered by ISO 4762, which specifies coarse-pitch threads and product grade A. For the M4 size, ISO 4762 gives a head diameter of 7.00 mm maximum, a head height of 4.00 mm maximum and a 3 mm nominal hexagon socket, with a coarse thread pitch of 0.7 mm. The 16 mm figure is the nominal shank length measured under the head. A2 is the austenitic chromium-nickel stainless designation used for corrosion-resistant fasteners, and ISO 4762 lists A2 and A4 among the stainless options for this screw form. The internal drive allows the head to be recessed into a counterbore.
Key specifications
| Attribute | Value |
|---|---|
| Fastener type | Hexagon socket head cap screw |
| Thread | M4 coarse, pitch 0.7 mm |
| Nominal length | 16 mm |
| Material | A2 austenitic stainless steel |
| Drive | 3 mm hexagon key (ISO 4762, M4) |
| Head diameter | 7.00 mm max (ISO 4762, M4) |
| Head height | 4.00 mm max (ISO 4762, M4) |
| Manufacturer part number | 1233920 |
Typical applications
The M4 × 16 mm length suits thin bracket and panel stack-ups, instrument and enclosure fixing, and the assembly of machined aluminium or steel sub-assemblies where the head must sit inside a counterbore. The 3 mm hexagon drive lets the screw be tightened where a bladed or cross-recess driver would not clear surrounding structure. A2 stainless is chosen where a corrosion-resistant fastener is required rather than a plated carbon-steel screw.
Supplied by BOLTON Technical Equipment Supplies against request for quotation. Add this item to your RFQ basket to request pricing, lead time and documentation requirements (e.g. CoC, datasheets or test reports where applicable).
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