Saracen FM Window Lock Gearbox for UPVC Windows - 05058 or 05060

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  • Saracen FM Window Lock Gearbox
  • Saracen FM Window Lock Gearbox
  • Saracen FM Gearbox
  • Saracen FM Window Lock Gearbox - Backset Size
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Frequently bought together:


The Saracen FM deadlock gearboxes are often found with the code 05060 or 05058 on the shootbolt extension sockets.

For Product video click here

Gearbox mechanism only. Shootbolt extension arms can be bought by clicking here

Deadlock mechanism systems consist of shootbolt bars and a unique central gearbox with a deadlock. The shootbolts fit into the the gearbox mechanism with a teeth fitting.

Available in backsets:

  • 20mm - those with 05060 printed on the extension socket
  • 22mm - those with 05058 printed on the extension socket


Available with latch size:

  • 9.5mm

  • 11.5mm


You can find the latch size on the end of the latch. See picture below:





 If you're not sure which lock you need for your windows then contact us on 01204 652211

Espag Lock Backset Measuring Guide







To Measure the backset on your window lock you need to measure from the middle of the spindle hole to the front of the face plate. Take a look at the picture below and the red arrows show you where to measure.


The holes that the Bolts go through are a set distance and are the same on ALL window locks (43mm).



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Additional Information

Delivered from just £1.44
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64 Reviews

  • 5
    05058 window lock gearbox

    Posted by James Atwill on Mar 24, 2020

    Excellent company to work with,great delivery time,first rate part

  • 5
    Window Lock

    Posted by Brian Wardman on Feb 16, 2020

    The existing lock had fallen apart, managed to replace the lock myself as UPVC window companies were not interested and wanted to put a new window in. Removed the lock and identified the correct model and got the replacement supplied by handles and hinges, easily fitted and now all sorted for less than a tenner.

  • 5
    Window lock

    Posted by Kerim staples on Jan 27, 2020

    I bought as my window lock had broke, great company and probuct. The website was very easy to follow and was easy to figure out which item I needed as there are step by step instructions on which lock I needed.. Thank you handlesandhinges

  • 5
    Saracen window lock gearbox

    Posted by Kevin Pike on Jan 20, 2020

    Great ident info to ensure I get correct product to replace identical item.

  • 5
    Mechanism replacement. Easy fit

    Posted by Payte on Jan 06, 2020

    Bought for replacement

  • 5
    saracen gearbox

    Posted by k owens on Nov 30, 2019

    excellent value and easy to fit

  • 4

    Posted by A Richardson on Oct 31, 2019

    Two arrived okay, I have yet to install them, however the action on one feels really good the other one feels okay.

  • 5
    Window lock gearbox

    Posted by Bernard Wilkins on Oct 21, 2019

    This item was very easy to find via the internet and clear information was provided on the H&H webpage so that we could identify the exact model required. The goods arrived very promptly within a couple of days of placing the order. They have now been fitted and we are very pleased with the quality, price and service.

  • 5
    Does the job

    Posted by George on Oct 08, 2019

    Easy to fit and fits perfectly and also easy to operate

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