Product Description
No.14 zinc plated steel hexagon SEMS screws with a pre-assembled captive washer, available in 1/2" and 3/4" imperial lengths.
These screws combine a hexagon head screw and captive washer in one ready-to-install assembly. The retained washer remains attached during handling and installation, helping to reduce loose components, simplify assembly and improve fitting efficiency.
- Screw size: No.14
- Material: Steel
- Finish: Zinc plated
- Product type: Hexagon SEMS screw
- Alternative product name: Acme screw with captive washer
- Head style: Hexagon head
- Drive type: External hexagon
- Washer type: Pre-assembled captive washer
- Available lengths: 1/2" and 3/4"
- Approximate metric lengths: 12.7mm and 19.1mm
- Length measured from beneath the screw head to the end of the screw
- Pack sizes available: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 20, 50, 100, 250, 500 and 1000
| Screw Size × Length | Approx. Metric Length | Material | Finish | Head Style | Washer Arrangement |
|---|---|---|---|---|---|
| No.14 × 1/2" | 12.7mm | Steel | Zinc Plated | Hexagon Head | Captive Washer |
| No.14 × 3/4" | 19.1mm | Steel | Zinc Plated | Hexagon Head | Captive Washer |
Hexagon SEMS screws are commonly used in automotive assemblies, machinery, electrical equipment, appliances, panels, brackets, enclosures, manufacturing and general maintenance applications.
The captive washer provides a wider bearing surface beneath the screw head and remains attached during handling. This can help speed up repetitive assembly work and reduce the risk of washers being omitted or dropped.
Installation is carried out using a correctly sized socket, nut spinner or spanner. The mating hole or component must have the correct thread and sufficient thread engagement for the application.
Zinc plating provides general corrosion resistance for indoor and sheltered applications. For prolonged outdoor, marine, coastal or highly corrosive environments, stainless steel or a more protective specialist coating may be more suitable.
Please note: The term “Acme screw” is used as an alternative product description for this SEMS fastener and should not be assumed to indicate a conventional trapezoidal ACME power-screw thread. Thread pitch, hex size and washer dimensions are not currently stated. If these details are critical to your application, please check with us before ordering.
Specifications and metric conversions are intended as a guide only. Product dimensions and washer styles may vary slightly by manufacturer or production batch.
