Panel Latches & Catches · Trade series (recessed paddle handle latches) · Application guide

What Are Paddle Latches Used For?

Typical applications, the industries that specify paddle latches, and how to choose the right size, material and finish for the joint.

Paddle Latches are used for closing and, where the latch draws, sealing an enclosure door against its gasket. They are manufactured to Trade series (recessed paddle handle latches), and selection is driven by the size designation, the fit and tolerance the assembly requires, and the service environment.

Primary duty: Closing and, where the latch draws, sealing an enclosure door against its gasket
Governing standard: Trade series (recessed paddle handle latches)
Category: Panel Latches & Catches

Application notes are general engineering guidance. Verify the property class and any approval requirement against your own design calculation.

Paddle Latches are selected when an assembly calls for closing and, where the latch draws, sealing an enclosure door against its gasket. This application guide to the Trade series (recessed paddle handle latches) type covers concrete end-uses, the specification checklist, correct installation, and where an alternative fastener performs better.

Typical Applications for Paddle Latches

The most common settings where these are specified:

General machine building: fastening covers, brackets, motors and sub-assemblies on production equipment.
Maintenance & repair (MRO): a stocked size for servicing existing plant where the original fastener spec must be matched.
Fabrication & metalwork: bench and on-site assembly of steel frames, enclosures and weldments.

How to Specify Paddle Latches for Your Application

Size: Match the size to the mating part — see the dimension table below for each option.
Material: Choose the material and finish for the service environment — plated steel for general use, stainless for corrosion resistance.
Environment: For damp, coastal or chemical exposure prefer A4/316 stainless or a suitable coating; indoors, plated steel or A2 is usually sufficient.
Standard: This product is supplied to Trade series (recessed paddle handle latches). Quoting the standard on your order guarantees interchangeable dimensions between suppliers.

Where Paddle Latches Are Not the Right Choice

Match the fastener to the load, environment and whether the joint must be reopened; the wrong class or style is the usual cause of joint failure.

Technical Drawing

Customize the parameters below — every spec field is editable, and the drawing redraws to match the values you choose. Changing the size will snap the other fields to that size's standard values; you can then override any individual value.

Sends the selected values to the quote form below.

Request a Quote

The form below follows the current technical drawing configuration. Change the drawing values above and the request details update automatically.

Request a Quotation

Specification

Item / category Standard Size(s) Material / finish Quantity

Business Information

Company * Contact Name * Email * Phone (with country code) Country / Region

Notes

Dimensions & Specifications (Trade series (recessed paddle handle latches))

Form	Handle	Latching	Typical use
non-locking paddle latch	flush recessed paddle	single rotary pawl	tool boxes, service bodies
keyed paddle latch	flush recessed paddle	single rotary pawl	secured compartments
paddle latch for rod control	flush recessed paddle	two- or three-point rod linkage	tall doors needing even sealing
stainless paddle latch	flush recessed paddle	single rotary pawl	marine and washdown

Inside the plant

Manufactured in our own plant

This part is cold-formed, threaded, heat-treated and finished in-house. The stages below are where its class and finish are actually decided.

01

Cold heading

Wire rod is drawn to size and cold-formed into blanks. Forming rather than cutting keeps the grain flow continuous around the head, which is where a bolt is most likely to fail.

Head dimensions and under-head radius checked at set-up and per shift.
02

Thread rolling

Threads are rolled between hardened dies rather than cut. Rolled threads are stronger in fatigue than cut threads and hold pitch and flank angle far more consistently across a batch.

Go / no-go ring gauges to ISO 965 tolerance class 6g.
03

Heat treatment

Quench-and-temper brings carbon and alloy steel to the property class ordered — 8.8, 10.9 or 12.9 — with the furnace charge tracked so a finished lot can be traced back to it.

Core hardness and tensile tested per lot to ISO 898-1.
04

Surface treatment

Zinc, zinc-nickel, hot-dip galvanizing, black oxide, phosphate and Dacromet, selected against the service environment rather than against the price list.

Coating thickness and neutral salt spray hours to ISO 9227.

Frequently Asked Questions

What material should Paddle Latches be for outdoor use?

For damp, coastal or chemical environments specify A4 (316) stainless or a suitably coated steel. For indoor or dry use, A2 (304) stainless or zinc-plated steel is normally adequate.

Are Paddle Latches made to a recognized standard?

Yes — they are manufactured to Trade series (recessed paddle handle latches), so dimensions are interchangeable between suppliers when you quote the standard on your order.