Attribute Schema Library
Attribute schemafastener distribution

Concrete Anchors Attributes

Concrete anchors transfer load from a fixture into concrete or masonry. The category spans wedge, sleeve, drop-in, screw, machine-screw, hammer-drive and adhesive systems, plus cast-in anchor bolts. Buyers are electrical and mechanical contractors buying by the box, fire-protection and rack installers ordering against an approved submittal, and MRO desks matching whatever is already in the slab.

"Size" means three different things here. A 1/2 in wedge anchor takes a 1/2 in hole. A 1/2 in drop-in is internally threaded for a 1/2-13 bolt and takes a 5/8 in hole. A sleeve anchor's stated diameter is the sleeve OD, not the thread. One Size column stacks all three, and the filter rail inherits it.

The data that decides the sale sits in ICC-ES and IAPMO evaluation reports, not the price file. One MPN is a single ERP row and a dozen ESR rows: embedment by embedment, cracked and uncracked, each with hmin, cmin, smin and installation torque. Catalogs link the PDF and never mine it.

Core

Every SKU needs these. Without them the record is not a product, it is a row.

Anchor Type
enum
Wedge Anchor

Governs hole size, setting method and load tables. A wedge and a drop-in of the same nominal size are not interchangeable.

Anchor Diameter (Nominal)
number · in
1/2 in (12.7 mm)

Primary filter. On wedge and sleeve anchors it also sets the drill bit; on drop-ins it is the bolt thread accepted, not the hole.

Overall Length
number · in
3-3/4 in

Buyer sizes it as fixture thickness + minimum embedment + nut and washer. Without it the SKU cannot be picked.

Thread Size
text
1/2-13 UNC

Determines the mating nut, coupling or rod. Metric and inch anchors sit in the same bin, and M12 is not 1/2-13.

Head / Drive Style
enum
Hex Nut and Washer

Decides whether the fixture bolts down over a projecting stud or takes a screw head, and which tool the installer brings.

Body Material
enum
Type 316 Stainless Steel

Carbon steel vs Type 304 vs Type 316 is the corrosion decision: interior slab, exterior canopy, or coastal and pool deck.

Finish / Coating
enum
Zinc Plated (ASTM B633 SC1 Type III)

Zinc plated, mechanically galvanized and hot-dip galvanized are different specs and different lead times. The job names one.

Drill Bit Diameter (Hole Size)
number · in
5/8 in (for a 1/2 in drop-in)

Installers kit the bit with the anchor. Drop-ins and machine screw anchors need an oversize hole nobody can infer from the size.

Minimum Embedment Depth (hnom)
number · in
2-1/4 in

Sets required anchor length and hole depth, and is the number the inspector checks. Published per diameter in the ESR.

Approved Base Material
enum
Normal-weight concrete; grout-filled CMU

Concrete only, or also grout-filled CMU, hollow block, brick, or lightweight concrete over metal deck. Wrong base, no listing.

Manufacturer Part Number (MPN)
identifier
STB2-50334

The key contractors quote off a submittal, and the join to the ESR, the price file and every reseller listing.

GTIN / UPC
identifier
00707392177777

Required for marketplace and GDSN publication, and for scan-based counter, vending and jobsite trailer transactions.

Country of Origin
enum
TW

Drives duty, Buy American / BABA eligibility on federally funded work, and customs paperwork on export orders.

Differentiating

What buyers actually compare on. This is where catalogs win or lose the filter.

Maximum Fixture Thickness (Grip)
number · in
1-1/2 in

Thread above the concrete must clear the fixture plus nut and washer. Grainger publishes it as Max. Work Thickness; most skip it.

Installation Torque (Tinst)
number · ft-lb
60 ft-lb

Wedge and sleeve anchors only reach rated load at the tabulated torque. Inspectors verify it; installers ask the counter for it.

Minimum Base Material Thickness (hmin)
number · in
5 in

Tells the buyer whether the anchor can be set in a 2-1/2 in topping over metal deck or needs a full-depth slab.

Compliance & identifiers

Standards, regulatory data, and the identifiers channels reject you for missing.

Evaluation Report Number
identifier
ESR-3037

The ICC-ES ESR or IAPMO-UES ER is what the engineer of record and the AHJ accept. No report number, no submittal.

Cracked-Concrete & Seismic Qualification
enum
Cracked and uncracked; SDC A-F

ACI 318 Ch. 17 requires cracked-concrete qualified anchors in Seismic Design Categories C through F unless cracking is ruled out.

The fields that aren't in the schema at all

What most concrete anchors catalogs are missing.

The table above is the schema most catalogs already have. These are the attributes that usually aren't in it — each one surfaced by a signal from the live market rather than by an audit of what's already there. This is what Anglera's Schema Foundry does on a real catalog, in this category.

Competitor signal
+ Evaluation Report Number (ICC-ES ESR)

Specialist anchor distributors expose an ESR/ER field on the rail and manufacturers lead with it. General MRO catalogs have no such field; site search for "ESR-3037" returns nothing.

The person writing the submittal cannot find the part in your catalog, so the order routes to the manufacturer's rep or a specialist house.

Supplier signal
+ Minimum Base Material Thickness (hmin)

Every ICC-ES report tabulates hmin alongside each embedment. Distributor records carry embedment and stop there, so nothing says whether the anchor suits a thin topping over metal deck.

Anchor drilled through the slab or set in a member too thin to develop it. Concrete blowout, rework, and a claim against the wrong party.

Search signal
+ Cracked-concrete and seismic qualification

Buyers type "cracked concrete wedge anchor" and "seismic anchor SDC D" and land on unfiltered category pages, because the qualification is a line inside a linked PDF, not a facet.

Quote dies at submittal review. The anchor may already be qualified; the catalog just cannot prove it, so the order is lost on paperwork.

Review signal
+ Drill bit diameter and setting tool required

Reviews and counter calls on drop-in and machine screw anchors repeat the same two questions: what bit does this take, and where is the setting tool. Neither field exists on the record.

Box lands on site with no setting tool and the wrong bit. Anchors are unusable that day, and the return plus reorder eats the margin on the line.

Marketplace signal
+ Installation Torque (Tinst)

Marketplace Q&A on the same MPN is dominated by "what do I torque this to?" The distributor record that fed the listing has no torque field to answer from.

Under-torqued anchors fail proof-load testing and over-torqued ones strip the cone. Neither shows up until inspection; both return as quality complaints.

How Schema Foundry finds these

Messy in, governed out.

The same value, spelled every way fastener distribution suppliers spell it. A filter only works once they agree.

Finish / Coating
HDGHot Dip GalvHot-Dipped GalvanizedMech GalvMGGalvanized
Hot-Dip Galvanized (ASTM F2329)

Mechanically galvanized is ASTM B695, a different coating. Collapsing both to "Galvanized" ships MG against an HDG spec.

Anchor Type
WedgeWedge AnchorStud AnchorThru-BoltThrough BoltExpansion Bolt
Wedge Anchor

Imported lines and UK/AU suppliers call wedge anchors through bolts. "Expansion bolt" also gets applied to sleeve anchors.

Anchor Diameter (Nominal)
1/20.500.5 in1/2-1312.7mmM12
1/2 in

M12 is 12.0 mm, not 1/2 in (12.7 mm). Auto-converting metric SKUs into the inch rail puts the wrong bit in the kit.

Body Material
SSStainless304 SSA218-8T304
Type 304 Stainless Steel

A2 and 18-8 map to 304; A4 and 316 do not. Merging all stainless to one value loses the coastal-vs-interior decision.

What buyers ask

Every one of these should be answerable from the attributes above. If it isn't, that's a gap.

  • What size hole do I drill for a 1/2 in wedge anchor?
  • How deep does this anchor have to go into the concrete?
  • How long an anchor do I need for a 1-1/2 in base plate?
  • Is this rated for cracked concrete and Seismic Design Category D?
  • What's the ESR number? The engineer wants it on the submittal.
  • Can I set this in grout-filled block, or is it concrete only?
  • Will this work in a 2-1/2 in topping over metal deck?
  • What do I torque the nut to?

What channels require

The same SKU, different mandatory fields per destination.

Distributor's own site and filter rail
Anchor TypeAnchor Diameter (Nominal)Overall LengthDrill Bit Diameter (Hole Size)Minimum Embedment Depth (hnom)Finish / Coating
Amazon Business
GTIN / UPCManufacturer Part Number (MPN)Anchor Diameter (Nominal)Overall LengthBody MaterialCountry of Origin
GDSN / 1WorldSync (retail-pack SKUs)
GTIN / UPCAnchor TypeBody MaterialFinish / CoatingCountry of Origin
Submittal package (EOR and AHJ review)
Evaluation Report NumberCracked-Concrete & Seismic QualificationApproved Base MaterialMinimum Embedment Depth (hnom)Minimum Base Material Thickness (hmin)Installation Torque (Tinst)

Concrete Anchors data, in practice

Is the anchor's diameter the same as the hole size?

For wedge and sleeve anchors, effectively yes: a 1/2 in wedge anchor is set in a 1/2 in hole. For drop-ins and machine screw anchors, no. A drop-in's stated size is the internal thread it accepts, so a 1/2 in drop-in takes a 1/2-13 bolt but needs a 5/8 in hole, and a 3/8 in drop-in needs a 1/2 in hole. If the catalog carries one "Size" field, those two numbers collapse into each other and the counter kits the wrong bit. Carry Anchor Diameter (Nominal) and Drill Bit Diameter (Hole Size) as separate, always-populated attributes on every anchor type, including the ones where they happen to match.

Why does one MPN show several embedment depths?

ICC-ES reports tabulate load values at more than one embedment per diameter, typically a standard and a deeper setting, and the allowable tension and shear change with each. The reports also distinguish nominal embedment (hnom, what the installer drills and measures) from effective embedment (hef, what the engineer uses in the ACI 318 Ch. 17 calculations). A distributor record needs hnom for the installer and should link the report for the rest. Publishing a single embedment number without saying which one it is invites the wrong hole depth, and "minimum embedment" on the PDP is not the same claim as "the embedment this load value assumes."

Is mechanically galvanized the same as hot-dip galvanized?

No. Hot-dip galvanizing of threaded fasteners is done to ASTM F2329, with ASTM A153 covering related hardware; mechanical galvanizing is ASTM B695, a peened zinc coating applied cold. Coating thickness classes can look comparable on paper, but specs and DOT work that call out HDG will reject MG at submittal review. Suppliers abbreviate both as "galv" in the price file, and zinc plating to ASTM B633 sometimes lands in the same bucket even though it is a thin electroplated coating for dry interior use only. Three distinct governed values, one supplier word.

Do we really need the ESR number on the record?

For anything going onto a construction project, yes. ACI 318 Chapter 17 governs anchorage to concrete, and the code path for a post-installed anchor is a current evaluation report, ICC-ES ESR or IAPMO-UES ER, issued against ACI 355.2 for mechanical anchors or ACI 355.4 for adhesives. The engineer of record specifies by report number and the AHJ checks it. That report also carries the cracked-concrete and seismic qualification, the ACI 355.2 anchor category, hmin, cmin, smin and Tinst. A catalog without the report number is invisible to the person writing the submittal, which is the person deciding where the order goes.

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