Expansion Bolts Manufacturers

  • ISO9001, IAFT16949 Certificated
  • High-precision CNC MACHINE
  • Precision+/-0.05mm CNC+/-0.02
  • 22Year Experience
  • In House Lab: Sclerometer, Hardness tester, Caliper, Torsion meter, Salt atmosphere testing machine, Projector, Die gage, Image screening instrument spectrometer

Expansion Anchor

Drop-In Expansion Anchor

Heatfastener uses a wide variety of materials to suit any fastener application. A few that we provide include:

  • Stainless steel – SS302, SS304, SS316, (good tenacity)
  • Steel – C45(K1045), C46(K1046),C20
  • Brass – C36000 ( C26800), C37700 ( HPb59), C38500( HPb58),C27200CuZn37), C28000(CuZn40)
  • Bronze–C51000, C52100, C54400, etc
  • Aluminum – Al6061, Al6063 etc
  • Carbon steel – C1006,C1010,C1018,C1022,C1035K,C1045
  • Alloy steel – SCM435,C10B21,C10B339
  • Other materials– Titanium, UNS C11000 Copper


  • Grade: Grade 4.8,Grade 6.8,Grade 8.8,Grade10.9,Grade12.9 etc
  • Finish: Plain, H.D.G, Black oxide, Chrome, Teflon,dacromet etc
  • Certificates: ISO9001:2015, ISO14001:2015,IATF16949
  • Non-standards: OEM is available, according to customer requirements


  • STANDARD PRODUCTION: Fine Workmanship, strictly controlled within the tolerance range
  • HIGH PRECISION: Good abrasion resistance and corrosion resistance
  • OEM&ODM: non-standard parts development and production expert
  • High quality: High-quality material for long service time

Dimensions& Charts Size

Drop In Expansion Anchor
Drop In Expansion Anchor


Expansion Bolts are widely used in buildings, automotive, ships, aircraft,.machinery, electrical appliances, furniture, and other products

Drop In Expansion Anchor

How To Install

These stainless steel anchors have good chemical resistance and may be mildly magnetic. Also known as drop-in anchors, they’re often used for overhead applications because the anchor’s internal plug expands in four directions to hold the anchor firmly inside the hole before inserting a threaded rod or bolt. To install, place the anchor into the hole, insert the required installation tool (sold separately) into the anchor, and drive with a hammer until the thicker portion of the tool makes contact with the anchor. When installed, anchors sit flush with the surface. Pull-out strength and shear strength values are 25% of the ultimate values.

Drop In Expansion Anchor

Need Custom Anchors for Your Industry?

As a 20-year industry experience manufacturer with a factory equipped with precision machines, we can provide, from consultation to production, a one-stop solution for you.


Contact Us

Are you looking for screw manufacturers?

24hours online Service