What is your minimum order quantity?

Our MOQ starts from 50 pieces per SKU, for both catalog items and custom OEM programs. Lower quantities for prototype or trial orders are negotiable — tell us about your project and we will work it out with you.

What is the typical lead time?

Standard products: 2-4 weeks. Custom projects: 4-8 weeks depending on tooling and approval process.

Do you support ODM / OEM projects?

Absolutely. Our engineering team can develop custom locks, latches and handles from concept to mass production.

Can you ship samples for evaluation?

Yes, sample orders usually ship within 3-5 business days by air courier.

How do I request a quotation?

Use the contact form or email us with product SKU, estimated quantity and target market. We reply within 24 hours.

Rotary latch

SL-4001-22 Bottom Drive Rotary Lock

The SL-4001-22 bottom drive rotary latch is engineered for light- to medium-duty industrial door panels and vehicle enclosures where installation space is restricted.

SKU : sl-4001-22 · 4001-22 · 4001/22

The SL-4001-22 Bottom Drive Rotary Latch is engineered for light- to medium-duty industrial door panels and vehicle enclosures where installation space is restricted. Its compact bottom drive structure allows flexible actuation routing beneath the latch body, and versions are available with or without a mounting bracket to suit different panel layouts. Mounting is via Ø4.5mm through holes or M4×0.7 / 8-32 UNC threaded fasteners. Offered in zinc-plated steel or stainless steel, the latch features an integrated cushioning device for quiet, vibration-resistant closing and withstands ultimate loads up to 2600N — a dependable choice for dust-proof sealed enclosures, equipment covers, and high-volume assembly projects.

Rotary Latch Stainless Steel Vibration Resistant Sealed

Key Features

Compact bottom drive design — ideal for space-restricted installations
Available with or without mounting bracket
Mounting: Ø4.5mm through holes or M4×0.7 / 8-32 UNC threaded fasteners
Integrated cushioning device — quiet, vibration-resistant closing
Material options: zinc-plated steel or stainless steel
Ultimate load capacity: 2600N
Suited to dust-proof sealed enclosures & equipment covers
OEM volume supply and project customization supported

Detailed Specifications

Model	Grade	Mounting Method	Drive Method	Mounting Bracket	Material
SL-4001-22-11	Single-stage (optional double-stage)	Ф4.5 through hole (optional M4x0.7 thread, 8-32 thread)	Bottom Drive	Have	Galvanized Steel (Optional Stainless Steel)
SL-4001-22-12	Single-stage (optional double-stage)	Ф4.5 through hole (optional M4x0.7 thread, 8-32 thread)	Bottom Drive	None	Galvanized Steel (Optional Stainless Steel)
SL-4001-22-21	Single-stage (optional double-stage)	Ф4.5 through hole (optional M4x0.7 thread, 8-32 thread)	Bottom Drive	Have	Galvanized Steel (Optional Stainless Steel)
SL-4001-22-22	Single-stage (optional double-stage)	Ф4.5 through hole (optional M4x0.7 thread, 8-32 thread)	Bottom Drive	None	Galvanized Steel (Optional Stainless Steel)
SL-4001-22-31	Single-stage (optional double-stage)	Ф4.5 through hole (optional M4x0.7 thread, 8-32 thread)	Bottom Drive	Have	Galvanized Steel (Optional Stainless Steel)
SL-4001-22-32	Single-stage (optional double-stage)	Ф4.5 through hole (optional M4x0.7 thread, 8-32 thread)	Bottom Drive	None	Galvanized Steel (Optional Stainless Steel)