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Lockwood Heavy Duty Mortice Hub Spring 8mm Hub 127mm

Lockwood Heavy Duty Mortice Hub Spring 8mm Hub 127mm

Lockwood

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SKU:
STK 5772NSF8SS
UPC:
9340116015392
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Lockwood 5772NSF8SS — MkII Universal Primary Lock, Heavy Duty Hub Spring, 8 mm Hub, 127 mm Backset Satin Stainless

The Lockwood 5772NSF8SS is a Selector® 5772 MkII universal primary mortice lock featuring a heavy-duty hub spring and 8 mm hub design. With a 127 mm extended backset and finished in Satin Stainless Steel (SS), this lock is engineered for high-traffic commercial and institutional environments. It delivers secure deadlatching, in-door function configurability, and is compatible with Lockwood 570 oval cylinders and a wide range of commercial furniture.

Delivery truck icon Estimated Warehouse Dispatch: 11 Days
Caution icon Non-Returnable Item: This product cannot be returned once purchased

Key features icon Key Features

  • Universal mortice lock body — Selector® MkII platform.
  • 127 mm backset for extended clearance door preps.
  • 8 mm hub design with heavy-duty hub spring for increased durability in high-use environments.
  • Satin Stainless Steel faceplate provides strength and architectural appeal.
  • In-door configuration: red/green selector under the faceplate for function adjustments.
  • Compatible with Lockwood 570 oval cylinders and master key systems.
  • Retrofits into existing Synergy® case sizes for easy replacement or upgrade.

Fire rating icon Fire Rated

  • Tested up to 4 hours on fire door assemblies (AS 1905.1:2005).

Specifications icon Specifications

  • Item Code: 5772NSF8SS
  • Function: Universal primary mortice lock body (MkII, 8 mm hub, heavy-duty spring).
  • Backset: 127 mm.
  • Hub: 8 mm, heavy-duty hub spring.
  • Finish: Satin Stainless Steel (SS).
  • Door Thickness: 32–50 mm standard; extension kits available up to 200 mm.
  • Bolt: 15 mm stainless steel latch with auxiliary deadlatch.
  • Case: Zinc alloy with stainless steel chassis.
  • Handing: Reversible without case disassembly.
  • Compliance: AS4145.2 (Durability D8, Security S7); AS1905.1 (Fire Doors).

Contents icon What's In The Box

  • 1 × Lockwood 5772NSF8SS mortice lock body (127 mm backset, 8 mm hub, heavy-duty hub spring)
  • 1 × Satin Stainless Steel faceplate
  • 1 × Satin Stainless Steel strike plate
  • Fixing screws
  • Installation instructions

Suitable uses icon Suitable Uses

  • Commercial and institutional doors requiring an extended 127 mm backset.
  • High-traffic applications needing an 8 mm hub with heavy-duty spring for longevity.
  • Fire-rated escape and entry doors requiring certified mortice hardware.
  • Retrofit upgrades from Synergy® mortice locks to Selector® MkII platform.

Product code list icon Selector® 5772 MkII Escape Locks — Item Code Family (127 mm Backset)

Item Code Function Description
5772 Escape Lock (Primary) Base mortice escape lock, 127 mm backset. Inside handle always free; outside handle rigid.
5772V Anti-vandal Escape Outside handle operable when unlocked; outside key locks/unlocks & retracts latch; inside always free.
5772VT Anti-vandal + Turn Cylinder outside, turn inside; inside always free; outside key locks/unlocks & retracts latch.
5772X Key Entry Escape Outside opened by key at all times (handle rigid); inside handle always free.
5772XT Key Entry + Turn Outside opened by key; inside by turn/handle. Inside always free; outside key locks outside handle.
5772-V Internal Cylinder Inside handle always free; inside key locks/unlocks outside handle & retracts latch after unlocking.
5772-T Internal Turn Inside handle always free; internal turn locks/unlocks outside handle.
5772VV Anti-vandal, Double Cylinder Outside key locks/unlocks outside handle; inside cylinder also operates bolt; inside always free.
5772XV Key Entry, Double Cylinder Outside key entry at all times; inside always free; inside key locks/unlocks outside handle & retracts latch.
5772-TA Anti-lockout + Turn Prevents accidental lockout; inside turn; outside handle operable when unlocked; inside always free.
5772VTA Anti-lockout Anti-vandal + Turn Cylinder outside, turn inside; combines anti-vandal control with anti-lockout reset.
5772V-H Holdback Anti-vandal Latch can be held in; outside key locks/unlocks; inside always free. Not fire-door rated.
5772XVH Holdback Key Entry, Double Cylinder Double cylinder; holdback function; inside always free. Not fire-door rated.
5772VTH Holdback Anti-vandal + Turn Cylinder outside, turn inside; holdback enabled. Not fire-door rated.

Accessories icon Selector® 5772 MkII — Accessories & Spares (Std. Backset Series)

Item Code Description Notes
3772-FINKITCP / PB / PC Alternative Finish Kits Strike + faceplate + screws. Use to match CP/PB/PC finishes on 3770/4772/5772 platforms.
3772-RK32XX / 3772-RK46XX Rebate Kits (4hr Fire Rated) For 13 mm rebates; lip 32/46 mm. Finishes: SS, CP, PB. “XX” = finish.
3772-AFKITSS / CP / PC Aluminium Door Fixing Kit Converts timber-fix lock to aluminium-fix; 156×25 mm radius faceplate.
3772-STK25 / 32 / 43 / 47 / 60 Short/Extended Lipped Strikes Lip 25–60 mm. Finishes: SS, CP, PB (60 mm only SS).
3772-STKBOX Strike Box (Pk=10) Box cavity behind strike for clean latch engagement.
3772-2100SS ES2100 Electric Strike Faceplate For timber/standard fixing with ES2100 monitored strikes.
3772AF-2100SS ES2100 Faceplate — Aluminium Fix For aluminium-fix installations using ES2100 strike.
3772-SECKIT Security Faceplate Screw Kit 2 × TR20 tamper-resistant screws to replace standard faceplate screws.
SP3570-5018 / -5228 / -5238 / -5258 Extended Spindles Door thickness coverage ≈ 32–200 mm (variant dependent).
SP3700/X7CAM X7 Cam (Latching) Retracts latch; interfaces with locking bar.
SP3700/VCAM V Cam (Locking) Locks/unlocks bar; retracts latch after unlocking.
3770M2-ADAPTOR MkII Latching/Turn Adaptor MkII only (not backward compatible with MkI).
3772-DXKITSC DX Mechanical Digital Kit Codepad + plate + spindle + latching adaptor (furniture ordered separately).
3772-DXKOKITSC DX Digital with Key Override Kit As DXKIT plus lower cylinder provision for key override.
3777-KIT Dual Entry Conversion Kit Lower cylinder plate + spindle cam + screws (two cylinders outside).

Warranty icon Warranty

  • Lockwood 25 Year Mechanical Warranty covers mechanical components and workmanship under normal use and correct installation.
  • Electronic and electrical components are covered for 3 years (PADDE & electric mortice locks 5 years, batteries excluded).
  • Keys are covered for 12 months.
  • Finish warranty varies by finish type and exposure — e.g. Everbrass 25 years; Stainless/Chrome/Anodised 10 years; PVD/VIVID 10 years; Symmetry range 5 years; decorative finishes such as bronze, antique and powdercoat 2 years (natural brass ageing excluded).
  • Warranty excludes misuse, improper installation, modification, or failure to maintain as specified.

PDF icon Download PDF Resources

PDF icon Lockwood Selector 3700 Series Mortice Locks Catalogue
PDF icon Lockwood Selector 3700 Series Mortice Locks Service Manual
PDF icon Lockwood 25 Year Mechanical Warranty (Conditions Apply)

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