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HANDAN HAOSHENG FASTENER CO., LTD.
Window Frame Screw

Our German-Style Self-Tapping Window and Door Screws are engineered for the professional installation of window frames, door frames, and sill plates into various substrates including concrete, solid masonry, brick, and steel. Designed following German engineering standards (DIN), these screws eliminate the need for separate wall plugs or anchors—they cut their own thread directly into the pre-drilled pilot hole, providing immediate load-bearing capacity

  • Description

Product Details


Name

Window Frame Screw

Materials

Carbon Steel(1022A)/ 410

Drive Type

Torx

Head Type

Countersunk Socket Head

Size

7.5mm

Strength level

High-strength 

Length

42-202mm

Surface finish

 ZP/YZP/Ruspert etc.


Product Parameter


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Key Features & Benefits


No Anchor Needed: Self-tapping thread cuts directly into concrete, brick, or masonry – saves time and cost

Immediate Load Capacity: Full holding power right after installation – no curing time

Tension-Free Fixing: Prevents frame distortion – ideal for PVC and timber frames

Removable & Reusable: Unlike expansion anchors, can be removed without damaging substrate

Fire Resistant: Tested up to 120 minutes for fire-rated assemblies

Corrosion Protected: Yellow zinc or blue passivated finish for indoor/outdoor use


Intended Applications


Window Frame Installation: Wood, PVC (plastic), and aluminum window frames into concrete, solid brick, and masonry 

Door Frame Installation: Entrance doors, interior doors, and French windows 

Window Sill Attachment: Securing sills to masonry substrates 

Frame Coupling: Joining multiple frame sections together

Curtain Wall & Facade: Light-gauge steel and aluminum framing systems


Substrate Compatibility


Substrate

Suitability

Installation Note

Solid Concrete

✓ Excellent

Standard hammer drill pilot hole

Solid Brick

✓ Excellent

Standard hammer drill pilot hole

Hollow Block

✓ Suitable

Use rotary drill only (no hammer) to prevent blowout 

Light Steel

✓ Suitable

Self-drilling variants available

Timber

✓ Suitable

Countersunk head for flush finish


Installation Guidelines


1.Drill Pilot Hole: Drill hole diameter and depth according to technical specifications. For hollow blocks, use rotary mode only (no hammer action) 

2.Clean Hole: Remove dust from hole using blow-out pump or brush

3.Position Frame: Align window/door frame using alignment wedges or spacers

4.Drive Screw: Using appropriate AW or Torx bit, drive screw through frame into pilot hole

5.Set Depth: Drive until head sits flush (countersunk) or until frame is securely clamped (socket head)

6.Verify: Check frame alignment and clamping force

Screw Length Formula: Screw length = Frame thickness + Gap distance + Thread embedment depth 


Why Choose Our Window Frame Screw?


Engineered Performance: Based on German (DIN) engineering principles and tested by ift Rosenheim, Europe's leading window technology institute 

Time-Saving: Eliminates anchor installation step—screw directly into pre-drilled hole

Professional Results: Tension-free fixing prevents frame distortion common with expansion anchors

Code Compliant: Suitable for fire-rated assemblies (up to 120 min) and safety glazing applications (with appropriate approvals) 

Comprehensive Range: Multiple head styles, lengths, and finishes for any frame material


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