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Rotary latch

SL-4004-21 Two-Point Drive Rotary Lock

The SL-4004-21 two-point drive rotary lock is a high-strength rotary locking solution for industrial door panels and specialty vehicles, latching at two points from a single drive.

  • SKU : sl-4004-21 · 4004-21 · 4004/21

The SL-4004-21 Two-Point Drive Rotary Lock is a high-strength rotary locking solution engineered for industrial door panels, specialty vehicles, and vibration-intensive machinery. Constructed from galvanized steel with an optional stainless steel upgrade, this lock features a two-point drive mechanism, single-stage or dual-stage engagement, and reversible left-hand / right-hand orientation for flexible integration across diverse equipment architectures.

Mounting is achieved via a Ф6.7 through-hole or threaded bosses in M6×1 and 1/4-20 UNF, ensuring broad compatibility with varying panel thicknesses and fabrication standards. The 3004-21 is available in standard or shock-absorbing configurations, accommodating a maximum pin size of 12.8 mm and withstanding ultimate loads up to 14,000 N without compromise to locking retention.

Its sealed, dustproof, and vibration-resistant design delivers dependable performance in the harshest operating environments where standard latches fail. Fully compliant with REACH Regulation (EC) No. 1907/2006, the 3004-21 is purpose-built for OEMs, vehicle modification shops, industrial enclosure manufacturers, and engineering project procurement requiring certified, bulk-quantity hardware.

Key Features

  • Two-point drive rotary mechanism for positive, high-strength mechanical locking

  • Single-stage or dual-stage engagement options to suit door sealing requirements

  • Reversible left-hand / right-hand installation for mirrored panel designs

  • Ф6.7 through-hole or M6×1 / 1/4-20 threaded mounting for versatile fixture compatibility

  • Galvanized steel body as standard; stainless steel option for corrosive environments

  • Standard or shock-absorbing structure variants to match application dynamics

  • Maximum pin size: 12.8 mm

  • Ultimate load capacity: 14,000 N

  • Sealed and dustproof construction for contaminant-heavy environments

  • Vibration-resistant design prevents loosening under sustained dynamic load

  • REACH Regulation (EC) No. 1907/2006 compliant — certified for EU and global markets

Detailed Specifications

Model

Grade & Direction

Mounting Method

Drive Method

Style

Material

SL-4004-11-11-10

Single stage (optional double stage), left

Ф6.7 through hole (optional M6x1 thread, 1/4 -20 thread)

Vertical Drive

Standard

Galvanized Steel (Optional Stainless Steel)

SL-4004-11-12-10

Single stage (optional double stage), left

Ф6.7 through hole (optional M6x1 thread, 1/4 -20 thread)

Vertical Drive

with shock absorption

Galvanized Steel (Optional Stainless Steel)

SL-4004-21-11-10

Single pole (optional double pole), right

Ф6.7 through hole (optional M6x1 thread, 1/4 -20 thread)

Vertical Drive

Standard

Galvanized Steel (Optional Stainless Steel)

SL-4004-21-12-10

Single pole (optional double pole), right

Ф6.7 through hole (optional M6x1 thread, 1/4 -20 thread)

Vertical Drive

with shock absorption

Galvanized Steel (Optional Stainless Steel)

SL-4004-11-21-10

Single stage (optional double stage), left

Ф6.7 through hole (optional M6x1 thread, 1/4 -20 thread)

Two-Point Drive

Standard

Galvanized Steel (Optional Stainless Steel)

SL-4004-11-22-10

Single stage (optional double stage), left

Ф6.7 through hole (optional M6x1 thread, 1/4 -20 thread)

Two-Point Drive

with shock absorption

Galvanized Steel (Optional Stainless Steel)

SL-4004-21-21-10

Single pole (optional double pole), right

Ф6.7 through hole (optional M6x1 thread, 1/4 -20 thread)

Two-Point Drive

Standard

Galvanized Steel (Optional Stainless Steel)

SL-4004-21-22-10

Single pole (optional double pole), right

Ф6.7 through hole (optional M6x1 thread, 1/4 -20 thread)

Two-Point Drive

with shock absorption

Galvanized Steel (Optional Stainless Steel)

SL-4004-11-31-10

Single stage (optional double stage), left

Ф6.7 through hole (optional M6x1 thread, 1/4 -20 thread)

Bottom Drive

Standard

Galvanized Steel (Optional Stainless Steel)

SL-4004-11-32-10

Single stage (optional double stage), left

Ф6.7 through hole (optional M6x1 thread, 1/4 -20 thread)

Bottom Drive

with shock absorption

Galvanized Steel (Optional Stainless Steel)

SL-4004-21-31-10

Single pole (optional double pole), right

Ф6.7 through hole (optional M6x1 thread, 1/4 -20 thread)

Bottom Drive

Standard

Galvanized Steel (Optional Stainless Steel)

SL-4004-21-32-10

Single pole (optional double pole), right

Ф6.7 through hole (optional M6x1 thread, 1/4 -20 thread)

Bottom Drive

with shock absorption

Galvanized Steel (Optional Stainless Steel)

SL-4004-11-41-10

Single stage (optional double stage), left

Ф6.7 through hole (optional M6x1 thread, 1/4 -20 thread)

Double Pull Rod - Bottom and Vertical

Standard

Galvanized Steel (Optional Stainless Steel)

SL-4004-11-42-10

Single stage (optional double stage), left

Ф6.7 through hole (optional M6x1 thread, 1/4 -20 thread)

Double Pull Rod - Bottom and Vertical

with shock absorption

Galvanized Steel (Optional Stainless Steel)

SL-4004-21-41-10

Single pole (optional double pole), right

Ф6.7 through hole (optional M6x1 thread, 1/4 -20 thread)

Double Pull Rod - Bottom and Vertical

Standard

Galvanized Steel (Optional Stainless Steel)

SL-4004-21-42-10

Single pole (optional double pole), right

Ф6.7 through hole (optional M6x1 thread, 1/4 -20 thread)

Double Pull Rod - Bottom and Vertical

with shock absorption

Galvanized Steel (Optional Stainless Steel)

Applications

  • Industrial door panels and access hatches

  • Specialty, heavy-duty, and modified vehicles

  • Construction, mining, and agricultural machinery cabs

  • Rail transit and fleet maintenance equipment

  • Industrial enclosures, switchgear cabinets, and control housings

  • Energy storage systems (ESS) and power distribution units

  • Vibration-intensive engine compartments and compressor housings

  • Sealed environmental chambers and dustproof operator cabins

Frequently Asked Questions

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