Explaining our TurnLock Catalogue

Video explaining how to use TurnLock Catalogue

How to select your TurnLock

1) Measuring the correct thickness

TurnLock thickness definitions showing P (panel), F (frame), and total thickness T

P = Panel thickness (stud assembly)
F = Frame thickness (receptacle)
T = Total thickness, consisting of P + F as well as possible gaskets(compressed thickness), paint thickness or gaps. This dimension gives the stud length number in the corresponding series tables in the catalogue. Can defer per series, below to see the most popular TurnLock Series.

2) Determine your TurnLock Series

» To determine the Serie and Part Number needed, we must know the strength, and the force (Newton) the connection needs to hold, with the Newton value, you can determine which is the best series for your application:

Series	Force in Newton	Application
LOPHS	300 N	Light Duty
LMH	670 N	Light Duty
LEG	700 N	Light Duty
LEA	900 N	Light Duty
MTH	1330 N	Medium Duty
MHS	3700 N	Medium Duty
HGR	4700 N	Heavy Duty
HHS	10000 N	Heavy Duty

3) Selecting the correct stud:

stud pic

select if you want stainless steel or steel zinc plated

select if you want hand operated or tool operated.

4) Choose the receptacle that best fits to your application please click here.

5) Remember the "type-number" of the receptacle.

With the help of the thickness of the plate, the frame and the receptacle number you can determine the correct formula on the first page, you arrive to a certain "T" value.

Use the correct Formula

Each TurnLock series uses slightly different thickness rules. Use the correct “P / F / T” method below to choose the right stud length and matching receptacle.

Light Duty Easy Assembly TurnLock (LEATL Series)

Light duty

Decorative-surface friendly TurnLock with a protective plastic washer. Available with snap-in or clip-on receptacles. Snap-in grommet allows smooth installation without a retaining washer.

LEATL selection formulas diagram — LEATL diagram: selection formulas depend on the chosen receptacle / washer option.

How to select (LEATL)

Determine your Panel (P) and Frame (F) thickness.
Select the retaining washer or grommet you want to use.
Use the series formulas to calculate T and select the stud length from the LEATL table.

Selection note The LEATL series includes multiple assembly options; calculate T using the correct formula shown in the LEATL diagram.

Light Duty Extended Grip TurnLock (LEGTL Series)

Light duty

Series with increased grip range. Externally threaded receptacles for castings or panels with a retaining nut. Encapsulated receptacles provide splash-proof protection.

LEGTL selection diagram for T equals P plus X — LEGTL diagram: total thickness is calculated as **T = P + X**.

How to select (LEGTL)

Select the stud assembly and receptacle.
Add a hex nut for the receptacle if required.
Select the stud retaining washer.
Calculate T = P + X and choose the stud length number from the table.

Formula: T = P + X

Light Duty One Piece Hole Shape TurnLock (LOPHSTL Series)

Light duty

Same hole shape for panel and frame. Quarter-turn lock/unlock, vibration resistant, quick installation without tools. Grip ranges from 2.0 mm to 4.6 mm.

LOPHSTL diagram showing T equals P plus F and minimum panel thickness — LOPHSTL diagram: **T = P + F**, with **Pmin = 1.2 mm**.

Part number example

Knurled head for 3.3–4.6 mm grip range: LOPHSTLK33-46Z

LOPHSTL = Series · K = Knurled head · 33-46 = Grip range · Z = Material/finish · (S = Slotted head)

Medium Duty Tiny Housed TurnLock (MTHTL Series)

Medium duty

Small parts with high tensile load, available with fixed, adjustable and floating receptacles and a wide range of stud head styles.

MTHTL selection diagram for types A, C, E, F, G

MTHTL types A + C* + E + F + G (illustration)

MTHTL type B (illustration)

MTHTL type D selection diagram showing T equals P plus X

MTHTL type D (illustration)

How to select (MTHTL)

Determine your P and F thickness.
Select which retaining washer you wish to use.
Determine the correct stud length number using the appropriate receptacle type formula.

Formulas

Type A + C* + E + F + G: T = P + F (*Type C: T ≥ 9.9 mm)
Type B: T = P + F (0.75 min.)
Type D: T = P + X (X 0.5 min.)

Medium Duty High Strength TurnLock (MHSTL Series)

Medium duty

Compact high-strength solution with flat receptacle and high preload.

MHSTL selection diagram showing T equals P plus F with flat receptacle

How to select (MHSTL)

Determine your P and F thickness.
Select the retaining washer.
Use T = P + F to select the proper stud length number (e.g. MHSTLS-*Z).

Formula: T = P + F

Medium Duty Push Push TurnLock (MPPTL Series)

Medium duty

Quick opening and closing by a push of the finger. Easy installation with single hole mounting.

MPPTL standard selection diagram placeholder

Standard (diagram)

Invisible (diagram)

Flush (diagram)

How to select (MPPTL)

Select the stud length number from the table (insert into the stud part number *).
Select the stud assembly and receptacle.
Use the correct Standard / Invisible / Flush table for your configuration.

Example: MPPTL-3Z (use the stud length n° as the “*” in the part number).

Heavy Duty High Strength TurnLock (HHSTL Series)

Heavy duty

High preload, high tensile strength TurnLocks for demanding applications such as commercial vehicles, coaches, agricultural machinery, chemical engineering and heating systems.