Flared Loop Ferrule Inserts

Features of Flared Loop Ferrule Inserts

• Higher Quality Flared Loop Ferrule Inserts:

  Flared Loop Ferrule Inserts

  
  

  The insert is a two-part assembly: a ferrule tapped with a coarse thread and a flared loop of wire welded to the embedded end. The socket accepts standard UNC bolts, and the loop anchors the insert in the concrete. Because the loop spreads pullout force over a wider area than a straight ferrule, flared loop inserts suit thin panels and connections where embedment depth is limited.

  
  

  Load Transfer and Rated Capacity

  
  

  The flared loop transfers tension from the bolt into the concrete through the loop legs, spreading the load over a larger bearing area than a straight ferrule. That geometry raises pullout capacity in thin panels, where embedment depth is short. Reference ratings are published as ultimate mechanical load tension: at least 9,000 lb for the 5/8"-11 UNC size and at least 18,000 lb for the 1"-8 UNC size. Safe working load is derived with a 3:1 safety factor in 3,000 psi normal-weight concrete with a 1/2" setback from the concrete face. 

  
  

  The two-leg flared loop design is not recommended as a lifting insert; for lifting, use a rated lifting anchor system instead. Actual capacity depends on concrete strength, edge distance, anchor spacing and bolt engagement. Check the insert data sheet, and where the project requires it, test in the actual concrete mix before production.

  
  

  Materials and Surface Protection

  
  

  Ferrules are formed from low-carbon steel, with the loop welded to the socket. A plain finish suits indoor service or short exposure; electro-galvanizing protects against rust in precast yards; hot-dip galvanizing is specified for exterior elements and humid sites. Type 304 stainless steel can be produced for coastal or chemical environments. For aggressive exposure, specify the stainless version at inquiry so lead time can be planned.

  
  

  Installation Practice and Quality Verification

  
  

  The insert is fixed to the formwork with the thread opening against the form face, so the thread sits flush with the concrete surface after stripping. Positioning templates or screwed plugs hold the insert square during pouring and keep concrete out of the threads. Compaction needs care: vibrators must not rest against the loop, which can shift the insert out of position. Published load tables assume a 1/2" setback from the face, and minimum edge distances must be respected. 

  
  

  Quality checks cover thread gauging, dimensional inspection of length and ring diameter, and tensile testing at three times the working load on a sampled basis. Batch test reports can be issued with the shipment. Confirm the bolt engages the full thread depth specified for the size; short engagement is the most common cause of connection failure in the field.

  
  

  You can get free samples to check whether they can meet the requirements.

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• Flared Loop Ferrule Inserts With Shorter Lead Time:

  

  
  

  Fabricated by welding a looped strut to a closed-end ferrule, this versatile insert is commonly used to make structural connections 

  and to suspend pipes and other mechanical equipment. Available in 3/8”, 1/2”, 5/8”, 

  3/4”, 7/8” and 1” sizes. Inserts must be set back 1/2” from concrete surface.

  Below capacities are based upon mechanical testing and available industry data.

  Minimum spacing of inserts is 2 x (corner distance).

  
  

  You can get a solution with shorter order delivery times and guaranteed quality and quantity.

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• Flared Loop Ferrule Inserts with Better Service:

  Custom Sizes and OEM

  
  

  Custom thread sizes, lengths and finishes can be made to drawings. HULK Metal supports OEM production with sample approval before mass runs.

  
  

  Factory Quality Control

  
  

  Ferrules pass thread and dimensional inspection before dispatch, with tensile test reports available per batch. Testing follows a 3:1 safety factor.

  
  

  Flexible Packaging and Delivery

  
  

  Carton, wooden case, palletized or bulk packaging by request. Sea, air or land freight, with loading support for mixed container orders.

  
  

  Technical Support

  
  

  Engineers help with insert selection, thread sizing, edge distance and bolt engagement for your element and load case.

  You can benefit from the comprehensive services of a dedicated client team.

  Contact Your Dedicated Service Team
• Cost-controllable Flared Loop Ferrule Inserts:

  Secure Threaded Connection, Cast In Place

  
  

  The insert gives you a clean, load-rated thread at the concrete surface, so brackets and supports bolt on without drilling, chemical anchors or patching. The flared loop holds the thread position during concrete placement.

  
  

  Predictable Pullout Performance

  
  

  The flared loop spreads tension into the concrete, and published ratings use a 3:1 safety factor in 3,000 psi concrete with a 1/2" setback. Actual capacity still depends on concrete strength, edge distance and bolt engagement.

  
  

  Corrosion Protection Options

  
  

  Plain, electro-galvanized and hot-dip galvanized finishes cover normal precast yard and exterior service; stainless steel is available for coastal or chemical environments. 

  
  

  You can leave a request and get a more suitable quotation.

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