Master Lock Key Controlled Built-In Combination Lock for Lift Handle Lockers

ML 1630
MFG Part #:
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Master Lock 1630 built-in keyed combination lock for lockers with automatic locking rods. Keys not included. Five combinations per lock, field changeable. Complete with combination charts. This lock for a locker comes in right or left hand setups. 

*Keys sold separately.

SKU ML 1630: Right Hand
SKU ML 1631: Left Hand

Casing : Rust resistant steel
Dial : High impact plastic
Front face with dial
Height : 2-29/32"
Width : 1-7/8"
Casing only : 5/16"
Including dial : 1-1/16"
Outside dia : 1-9/16"
Dia at front : 1"
Where it meets dial : 1-1/8"
Depth : 5/8"
Mounting bolts - coming off the back of the front casing,
one at the top and one at the bottom :
Bolt size : 1-24
Thread length : 1/2"
Bolt to bolt OC : 2-3/16"
Back casing
Including mounting tabs : 2-11/16"
Not including mounting tabs : 1-2/32"
Including locking bolt : 2-5/16"
Not including locking bolt : 2"
Mounting tabs
Height : 17/32"
Width : 1-1/2"
Thickness : 1/16"
Mounting holes
Qty : 2, 1 on top tab, 1 on bottom
Tab dia : 7/32"
Hole to hole OC : 2-3/16"
Mounting nuts (included)
Qty : 2
Type : 10-24 Hex head serrated flange nut (has serrations on its
underside to give 'bite')
Hex size : 3/8"
Locking bolt - projects out of the side of the back casing
Height : 3/4"
Depth : 7/32" with (extension out of the casing): 5/16"
Combination push buttton - located in the center back of the casing
Dia : 7/16"
Depth of extention out of the casing : 1/16"
Control charts are provided with each lock order,
both on paper and CD
Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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