Opens in a new tab
Filter By Category

Categories

  • Abrasives, Cutting, HolemakingAbrasives, Cutting, Holemaking
    Cutoff Wheels
    Drill Bits & Accessories
    Flap Wheels & Discs
    Grinding Wheels
    Sanding & Surface Conditioning
    Wire Wheels & Brushes
    More...
  • Battery ProductsBattery Products
    Accessories
    Anderson Connectors
    Battery Terminals & Lugs
    Battery, Welding Cable
    More...
  • Bulbs, BeamsBulbs, Beams
    Halogen Replacement
    Mini Bulbs
    Sealed Beams
    More…
  • ChemicalsChemicals
    Adhesives & Sealants
    Cleaners
    Lubricants
    Paints
    More…
  • FastenersFasteners
    Bolts
    Nuts
    Pins
    Rivets
    Screws
    Washers
    More…
  • Fittings, Valves, AdaptersFittings, Valves, Adapters
    Brass
    Hydraulic
    Pneumatic
    More...
  • Fuse ProductsFuse Products
    Circuit Breakers
    Fuse Blocks & Holders
    Fuses
    Relays & Soleniods
    More...
  • KitsKits
    Fasteners
    Fittings
    Fuse
    Securing & Bundling
    Terminal
    More…
  • Securing, BundlingSecuring, Bundling
    Cable Ties & Mounts
    Clips & Clamps
    Grommets & Plugs
    Heat Shrink Tubing
    Tape, Adhesive, Velcro
    More…
  • StorageStorage
    Base
    Bearing Rack
    Bin
    Bin Rail
    Cabinet
    Cable Tie Rack
    Caddy
    Compartment Bin
    Compartment Box
    Compartment Box Insert
    Display Rack
    Divider
    Enclosure
    Hinge Bar
    Rack
    Shelf
    Wire Rack
    Workstation
  • SwitchesSwitches
    Disconnect
    Ignition
    Push-Button
    Push-Pull
    Rocker
    Toggle
    More…
  • TerminalsTerminals
    Butt Connectors
    GM, AMP, Deutsch, Specialty
    Quick Disconnects
    Ring Terminals
    Scotchlok, Wire Nuts
    More...
  • ToolsTools
  • Trailer ProductsTrailer Products
    Adapters & Cords
    Breakaway, Brake Controllers
    Trailer Connectors
    More...
  • Truck, Warning LightsTruck, Warning Lights
    Back-Up, Utility
    Marker, Clearance
    Stop, Turn & Tail Lights
    Warning & Strobe Lights
    Work Lights
    More…
  • Wire, Cable, HoseWire, Cable, Hose
    Battery, Welding Cable
    Jacketed Wire
    Power Cord
    Primary Wire
    Trailer Cable
  • MiscMisc
    • Contact Sales

    Shop All
    All CategoriesContact Sales
    trigger

    Inch Thread Checker Set SWTC-S21 Gauge

    Part #: SWAT-CHKR-INCH

    The S & W Manufacturing SWTC-S21 Inch Thread Checker is a precision tool set that allows you to instantly verify and distinguish common Unified inch threads by inspecting both bolt and nut simultaneously. Constructed from zinc and black oxide finishes, the gauges are permanently stamped and mounted on a flexible wire loop to keep the set together while allowing individual use. It helps reduce threading errors, prevent wrong part substitution, and speed up inspection in shop, maintenance, or assembly environments.