Galvanized Window-Style Gecko Expansion Screw for Doors and Windows with Internal Expansion Sleeve

Name: Galvanized Window-Style Gecko Expansion Screw for Doors and Windows with Internal Expansion Sleeve
Brand: Handan Chang Lan Fastener Manufacturing Co., Ltd.
SKU: 2169248602

Hebei, ChinaHandan Chang Lan Fastener Manufacturing Co., Ltd.

US$0.195

1,000-9,999 Pieces

US$0.162

10,000+ Pieces

Sample price:US$0.01/piece.Request sample

Product profile

Customization

Available

Connection

Common Bolt

Finish

Zinc Plated

Model NO.

PZ-6-72-1

Head Style

Round

Length

50mm

Material

Carbon Steel

Standard

DIN, GB

Type

Round Head

Zinc Coating Thickness

5 μm, 8 μm, 12 μm, 15 μm

Thread Type

Metric (ISO), Unc, or Unf

Expansion Sleeve Material

Carbon Steel, Stainless Steel, or Brass

Diameter

M8, M10, M12

Transport Package

Bag+Carton+Pallet

Specification

M10 M12 M14 M16

Trademark

Origin

China

Production Capacity

50000000 Pieces/Day

Key features

Designed for window frame fixation, the window-type gecko expansion bolt ensures strong holding power while being easy to install, durable, and reliably stable over time.

Alignment, grip, and loosening issues in window-type gecko bolts are solved by guide ribs, adaptive wings and locking rings.

Window-type gecko expansion bolts are used for window frame installations on concrete or masonry, offering quick, secure anchoring, high load resistance, and long-term durability.

Company profile

Importers and ExportersHigh Repeat Buyers ChoicePatents AwardedProduct Certification

Handan Chang Lan Fastener Manufacturing Co., Ltd.

Hebei, China

Business Type: Manufacturer/Factory, Trading CompanyAverage Response Time: ≤3.72hTerms of Payment: Western Union, PayPal, D/P, etc.International Commercial Terms(Incoterms): FOB, DAP, EXW, CIP, CPT, CFR, CIF, Others, FCA, DAT

About Our Factory & Business Background

AddressLin Ming Guan Zhen Bei Shi Kou Cun Dong, Yongnian District, Handan, Hebei, China

Average Lead TimePeak Season Lead Time: within 15 workdays Off Season Lead Time: within 15 workdays

Our Production Capability & Technical Expertise

Main ProductsScrew, Bolt, Nut, Anchor Bolt, Flat Washer, Expansion Bolt, Threaded Rod, High-Strength Bolt, Self-Drilling Screw, Drywall Screw

Our Industry Experience & Global Business Record

Main MarketsNorth America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe

Product Q&A

Q:What substrates are these bolts suitable for?

They are designed for solid concrete, brick, and block masonry, as well as dense natural stone.

Q:Does the galvanized coating provide sufficient corrosion resistance for outdoor use?

Yes, the zinc plating offers good protection against rust and weathering, making them ideal for window frames in exterior walls.

Q:What is the maximum load capacity?

Load ratings vary by diameter; typically M8-M12 sizes support shear loads from 5 kN up to 15 kN in concrete (check technical data for exact values).

Q:Are they suitable for hollow or cracked substrates?

Standard versions work best in solid material; for hollow or cracked masonry, use special variants with deeper expansion sleeves or injection anchors.

Q:How do I select the correct length and diameter?

Choose diameter based on load requirements and length based on fixture thickness + embedment depth (usually 40-60 mm in the substrate). Custom sizes are available on request.