Description
Hex Socket Cap Head Screw M3x30 Stainless Steel PT A2 — BOLTON SKU 56305.
About the Hex Socket Cap Head Screw M3x30 Stainless
The Hex Socket Cap Head Screw M3x30 in this listing is a metric cap-head machine screw with an M3 × 0.5 coarse thread and 30 mm nominal length, manufactured in A2 (304-type) austenitic stainless steel. The ‘PT’ in the designation indicates a partially threaded shank: part of the length is plain shank, which carries the joint across the clamped interfaces while the threaded portion engages the nut or tapped hole. Cap-head screws with an internal hexagon drive are installed with an Allen key or hex bit and sit in counterbored holes or tight corners where an external hex head would be awkward to reach. A2 stainless gives uncoated corrosion resistance suited to general industrial, electronics and outdoor equipment assembly, and matches the A2 lock nuts and washers offered alongside this screw in the BOLTON catalogue.
Key specifications
| Thread | M3, coarse (0.5 mm pitch) |
|---|---|
| Nominal length | 30 mm |
| Head style | Cylindrical cap head, internal hexagon drive |
| Thread coverage | Partially threaded (PT, as designated) |
| Material | A2 (304-type) austenitic stainless steel |
Typical applications
Screws of this length and size fasten stacked components — spacer-mounted boards, sensor housings, small actuators — inside equipment where the joint depth exceeds what a short screw can reach. The counterbore-friendly cap head keeps the fastener flush inside compact assemblies.
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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