Expansion Shields

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Expansion shields allow anchoring attachments via metal inserts driven into pre-drilled holes and expanded to seal against the sides of the holes. These units are designed for resisting...Read more

StyleModelDrill SizeMaterialTypePrice (inc. VAT)Pkg. Qty.
A33040001/2"Zinc AlloyLag Screw Expansion Anchor£23.3525
A33050001/2"Zinc AlloyLag Screw Expansion Anchor£26.5725
A33140001/2"Zinc AlloyLag Screw Expansion Anchor£22.9425
A33150001/2"Zinc AlloyLag Screw Expansion Anchor£31.8025
A33080003/4"Zinc AlloyLag Screw Expansion Anchor£56.0425
A33180003/4"Zinc AlloyLag Screw Expansion Anchor£77.0225
A33060005/8"Zinc AlloyLag Screw Expansion Anchor£50.0725
A33160005/8"Zinc AlloyLag Screw Expansion Anchor£65.7825
StyleModelThread SizeDrill SizeMaterialTypePrice (inc. VAT)Pkg. Qty.
A34602001"1"Zinc AlloyDouble Expansion Nut£53.9510
A34302001/2"1/2"Zinc AlloyDouble Expansion Nut£101.4350
A34502003/4"3/4"Zinc AlloyDouble Expansion Nut£152.8950
A34202003/8"3/8"Zinc AlloyDouble Expansion Nut£149.00100
A34402005/8"5/8"Zinc AlloyDouble Expansion Nut£81.1750
POWERS FASTENERS -

Zamac Alloy Lag Expansion Shields

Lag expansion shields are designed to provide a secure and safe grip in concrete, masonry and other materials. These shields are suitable for securing anchors and fasteners to a substrate, preventing them from loosening or becoming dislodged. Lag expansion shields are available in a variety of sizes and shapes to fit different applications. They are ideal for anchoring machinery, securing door frames and mounting lighting fixtures.

StyleModelThread SizeAnchor Dia.Drill SizeMin. EmbedmentMaterialTypePrice (inc. VAT)Pkg. Qty.
A01201-PWR1/2"-133/4"3/4"2"Zamac AlloyLag Shield£110.7750
A01205-PWR1/2"-133/4"3/4"3"Zamac AlloyLag Shield£151.5050
B01051-PWR1/4"-201/2"1/2"1"Zamac AlloyLag Shield£41.5150
B01055-PWR1/4"-201/2"1/2"1 1/2"Zamac AlloyLag Shield£53.6550
A01305-PWR3/4"-101"1"3 1/2"Zamac AlloyLag Shield£181.1225
B01151-PWR3/8"-165/8"5/8"1 3/4"Zamac AlloyLag Shield£79.1750
B01155-PWR3/8"-165/8"5/8"2 1/2"Zamac AlloyLag Shield£91.7350
A01251-PWR5/8"-117/8"7/8"2"Zamac AlloyLag Shield£69.0725
A01255-PWR5/8"-117/8"7/8"3 1/2"Zamac AlloyLag Shield£116.4025
A01101-PWR5/16"-181/2"1/2"1 1/4"Zamac AlloyLag Shield£103.4650
A01105-PWR5/16"-181/2"1/2"1 3/4"Zamac AlloyLag Shield£85.8850
MKT FASTENING -

Steel Double Taper Bolt with Expansion Nut Shields

StyleModelThread SizeAnchor Dia.Drill SizeMin. EmbedmentUltimate Shear In 3000 Psi ConcreteUltimate Tension In 3000 Psi ConcreteGradePrice (inc. VAT)Pkg. Qty.
A34600001"1"1"4 5/8"36257 lbs.28263 lbs.Grade 5£384.7310
B34620001"1"1"4 5/8"36257 lbs.28263 lbs.Grade 5£320.6210
A34320001/2"1/2"1/2"2 3/8"12177 lbs.8165 lbs.Grade 5£152.9120
A34300001/2"1/2"1/2"2 3/8"12177 lbs.8165 lbs.Grade 5£147.5425
A34310001/2"1/2"1/2"2 3/8"12177 lbs.8165 lbs.Grade 5£176.3125
A34510003/4"3/4"3/4"3 3/8"27916 lbs.11906 lbs.Grade 5£340.5320
A34500003/4"3/4"3/4"3 3/8"27916 lbs.11906 lbs.Grade 5£261.9420
A34520003/4"3/4"3/4"3 3/8"27916 lbs.11906 lbs.Grade 5£292.9815
B34530003/4"3/4"3/4"3 3/8"27916 lbs.11906 lbs.Grade 5£229.6415
A34220003/8"3/8"3/8"1 7/8"7177 lbs.4030 lbs.Grade 5£259.4450
A34230003/8"3/8"3/8"1 7/8"7177 lbs.4030 lbs.Grade 5£256.2250
A34200003/8"3/8"3/8"1 7/8"7177 lbs.4030 lbs.Grade 5£172.9250
A34420005/8"5/8"5/8"2 7/8"17030 lbs.9990 lbs.Grade 5£320.2025
A34400005/8"5/8"5/8"2 7/8"17030 lbs.9990 lbs.Grade 5£161.3920
B34430005/8"5/8"5/8"2 7/8"17030 lbs.9990 lbs.Grade 5£317.4125
A34410005/8"5/8"5/8"2 7/8"17030 lbs.9990 lbs.Grade 5£328.0325
StyleModelDrill SizeThread SizeMaterialTypePrice (inc. VAT)Pkg. Qty.
A62120001 1/4"-Zinc AlloyMachine Screw Double Expansion Anchor£31.715
A62100001"-Zinc AlloyMachine Screw Double Expansion Anchor£23.785
A62040001/2"-Zinc AlloyMachine Screw Double Expansion Anchor£27.6025
A62060003/4"3/8"-16Zinc AlloyMachine Screw Double Expansion Anchor£37.2210
A62050005/8"-Zinc AlloyMachine Screw Double Expansion Anchor£47.6025
MKT FASTENING -

Zinc Alloy Machine Screw Anchor Expansion Shields

StyleModelDrill SizeThread SizeMaterialTypePrice (inc. VAT)Pkg. Qty.
A61040001/2"-Zinc AlloyMachine Screw Expansion Anchor£10.5525
A61060005/8"-Zinc AlloyMachine Screw Expansion Anchor£17.1910
A61050005/8"-Zinc AlloyMachine Screw Expansion Anchor£20.8425
A61080007/8"1/2"-13Zinc AlloyMachine Screw Expansion Anchor£29.495
B62080007/8"-Zinc AlloyMachine Screw Expansion Anchor£38.9410
MKT FASTENING -

Zinc Alloy Machine Screw Expansion Shields

StyleModelThread SizeAnchor Dia.Drill SizeMin. EmbedmentUltimate Shear In 3000 Psi ConcreteUltimate Tension In 3000 Psi ConcreteMaterialTypePrice (inc. VAT)Pkg. Qty.
A11080001/2"-137/8"7/8"2 1/4"8100 lbs.5100 lbs.Zinc AlloyMachine Screw Expansion Shield£335.6350
A11040001/4"-201/2"1/2"1 1/4"2100 lbs.2320 lbs.Zinc AlloyMachine Screw Expansion Shield£365.96100
B11120003/4"-101 1/4"1 1/4"3 1/8"15300 lbs.9850 lbs.Zinc AlloyMachine Screw Expansion Shield£450.6625
A11060003/8"-1611/16"11/16"1 3/4"3850 lbs.3640 lbs.Zinc AlloyMachine Screw Expansion Shield£194.0950
B11100005/8"-111 1/8"1 1/8"2 5/8"14170 lbs.5820 lbs.Zinc AlloyMachine Screw Expansion Shield£672.1950
A11050005/16"-189/16"9/16"1 1/2"3300 lbs.2600 lbs.Zinc AlloyMachine Screw Expansion Shield£337.19100

Expansion Shields

Expansion shields allow anchoring attachments via metal inserts driven into pre-drilled holes and expanded to seal against the sides of the holes. These units are designed for resisting shear force from mechanical loads and securing bolts or fasteners exposed to vibration or side pressure.

Frequently Asked Questions

What are through-bolts?

Through-bolts are made of high tensile steel and their expansion claps completely deform in the hole. Through-bolts function by expanding on the end fork. As you tighten the top nut, the cone piece will gradually pull through the clasp and begin to expand.

What are knock-in hammer anchors?

They are similar to drop-in anchors such that they must be struck to be installed. They feature a nylon or steel body that is positioned in the hole. A nail / screw is driven through the centre of the anchor, forcing the body to expand against the substrate.

What is an expansion bolt?

They are made of three parts: an expanding sleeve, a threaded bolt and a properly sized nut. When used in conjunction, the force produced by tightening the nut and bolt pushes the expanding portion of the sleeve outwards, gripping the material into which the sheathing is embedded. Owing to the unique fastening system, expansion bolts are best suited for connecting porous materials like brick, stone & concrete.

What are the types of expansion bolts?

  • Lifetime Expansion Bolts: As the name implies, these fasteners are not intended to be removed. They are distinguished by the steel cone that covers the bolt's head.
  • Permafix Security Expansion Bolts: These bolts are commonly used to keep bars and grilles in place.
  • Anti-Tamper Expansion Bolts: These steel fasteners can be installed and removed only using an anti-tamper tool.

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