Description
1720384 Hex Socket Button Head Screw M3x8, Stainless Steel A4 — BOLTON SKU 63725.
About the 1720384 Hex Socket Button Head Screw
The 1720384 screw hex skt btn listing covers a button head screw with an internal hexagon (Allen) drive, an M3 coarse thread and a nominal length of 8 mm. A button head has a low, domed profile and a wider bearing surface than a cylindrical cap screw head of the same thread size, which spreads clamping load over softer or thinner parent material and leaves a rounded, snag-free finish on exposed faces. The socket is shallower than that of a cap screw, so button heads are normally specified where appearance and clearance matter more than maximum tightening torque. The material is A4 austenitic stainless steel, the molybdenum-bearing group in ISO 3506-1 that offers better resistance to chlorides and marine atmospheres than A2. No head-dimension standard is recorded against this reference, so head diameter and socket size are not stated here.
Key specifications
| Type | Button head screw, hexagon socket drive |
|---|---|
| Supplier reference | 1720384 |
| Thread | M3 × 0.5 (coarse) |
| Nominal length | 8 mm |
| Material | A4 austenitic stainless steel (ISO 3506-1) |
| Finish | Plain, unplated |
Typical applications
This size is used for fixing thin covers, trim panels, clamp plates and light brackets where a flush-looking rounded head is preferred to a protruding cap screw. The A4 grade makes it a reasonable choice for coastal, humid or wash-down installations in which A2 stainless would eventually show surface staining. An 8 mm length suits a thin panel fixed into a tapped plate or an insert.
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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