P.O. Box 2101
Oak Park, Vic 3046
(03) 9306 6760
0421 149 760
Lockwood 355 Double Cylinder Deadlock Matte Black – 60mm Anti-Jemmy Lock (355-NMBK)
$367.00 Inc. GST
The Lockwood 355 deadlock matte black (355-NMBK) is a double-cylinder surface-mounted anti-jemmy rim deadlock in matte black with a 60mm backset.
- Double Cylinder Key Security: Keyed inside and outside to prevent reach-through unlocking through door glass.
- Interlocking Anti-Jemmy Bolt: Vertical pivoting steel bolt hooks into the strike to resist crowbar spreading.
- Architectural Matte Black: Contemporary matte black Trade Pack finish for modern timber entry doors.
- Stocked Victorian Warehouse Dispatch: In stock in Victoria for 24-48hr dispatch with free Australia-wide shipping over $149.95 AUD.
🔑 Ordering Multiple Locks? Get Them Keyed Alike:
Have our in-house Victorian locksmiths pin your compatible C4 / LW5 locks to open on one single key (2 matching keys per group). $14.95/lock (1–4) • $12.95/lock (5–9) • $11.45/lock (10–19) • $9.95/lock (20+ bulk).
Add Key Alike Service (SKU: KA) →
Have our in-house Victorian locksmiths pin your compatible C4 / LW5 locks to open on one single key (2 matching keys per group). $14.95/lock (1–4) • $12.95/lock (5–9) • $11.45/lock (10–19) • $9.95/lock (20+ bulk).
Add Key Alike Service (SKU: KA) →
The Lockwood 355 deadlock matte black (SKU: 355-NMBK) is a heavy-duty double-cylinder surface-mounted anti-jemmy rim deadlock finished in architectural matte black. Manufactured by Lockwood (ASSA ABLOY), this lockwood 355-nmbk deadlock combines proven interlocking bolt security with a modern matte black finish for contemporary entrance doors.
Lockwood 355 Deadlock Matte Black Anti-Jemmy Bolt and C4 Keying
Engineered to protect glazed timber doors against both jemmying and reach-through attacks, this black lockwood 355 deadlock conceals all fixing screws when closed and operates via a 5-pin C4 key on both sides.
- Dual 5-Pin C4 Cylinders: Requires a C4 key inside and outside so intruders cannot unlock the door through broken glass.
- 60mm Standard Backset: Retrofits existing Lockwood 355/303 footprints on 30mm to 45mm timber doors.
- Matte Black Trade Pack: Supplied with matte black body, external rim cylinder, strike plate, screws, and 2x C4 keys.
Stocked Victorian Warehouse Dispatch and On-Site Installation
Browse our full range of residential deadlocks or book licensed mobile installation across Metropolitan Melbourne and Regional Victoria via All Secure Locksmiths.
- 24-48hr Victorian Dispatch: Shipped within 24 to 48 hours from our stocked Victorian warehouse with free Australia-wide delivery over $149.95 AUD ($9.95 AUD flat rate under $149.95 AUD) and 30-day returns (Postal Returns: P.O. Box 2101, Oak Park, VIC 3046).
Frequently Asked Questions
Does the 355-NMBK come with a matching matte black external cylinder?
Yes. The Trade Pack includes the matching matte black external 201 rim cylinder, lock body, strike, and 2x C4 keys.
Will it retrofit an older silver or brown Lockwood 355?
Yes. All Lockwood 355 models share the exact same 60mm backset mounting footprint.
Can it be keyed alike to my other C4 locks?
Yes. Our in-house Victorian locksmiths can key both C4 cylinders alike prior to dispatch.
Additional Information & Specifications
| Weight | 1.05 kg |
|---|---|
| Dimensions | 17 × 12 × 8 cm |
| Brand | Lockwood |
| Lock Type | Double Cylinder Anti-Jemmy Rim Deadlock |
| Model Code | 355-NMBK |
| Backset | 60mm Standard Rim Backset |
| Cylinder Profile | Dual 5-Pin C4 Cylinders (Keyed Both Sides) |
| Finish | Matte Black (MBK) |
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