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    18 Products

    Screw Size Identifiers

    Image of Product. Front orientation. Thread Size Identifiers. Screw Size Identifiers, Inch.

    Inch

    Find thread size, screw size, diameter, or drill bit size.
    For Use With
    For Thread
    Type
    For Thread
    Location
    For Thread Size
    For Screw Size
    For Dia.
    For Drill Bit Size
    Wd.
    Ht.
    Thk.
    Each
    Inch
     
    Steel
    Screws, Bolts, Threaded Rods, Pins, Rivets, Drill BitsUNC/UNFExternal1-64, 1-72, 2-56, 2-64, 3-48, 3-56, 4-36, 4-40, 4-48, 5-40, 5-44, 6-32, 6-36, 6-40, 8-32, 8-36, 8-40, 10-24, 10-32,
    12-24, 12-28, 12-32, 1/4"-20, 1/4"-28, 1/4"-32, 5/16"-18, 5/16"-24, 5/16"-32    		No. 1, No. 2, No. 3, No. 4, No. 5, No. 6, No. 8, No. 10, No. 12, 1/8", 5/32", 3/16", 7/32", 1/4", 9/32", 5/16"
    		0.073", 0.086", 3/32", 0.112", 1/8", 0.138", 5/32", 0.164", 3/16", 7/32", 1/4", 9/32", 5/16"7/32", 1/4", 9/32", 5/16", 53 Ga., 51 Ga., 50 Ga., 48 Ga., 47 Ga., 45 Ga., 43 Ga., 42 Ga., 39 Ga., 38 Ga., 37 Ga., 36 Ga., 35 Ga., 33 Ga., 30 Ga., 29 Ga., 28 Ga., 25 Ga., 23 Ga., 21 Ga., 19 Ga., 16 Ga., 14 Ga., 13 Ga., 10 Ga., 8 Ga., 3 Ga., F, I3"5 1/8"5/64"98728A112000000
     

    Thread-It Screw, Bolt, and Nut Size Identifiers

    Image of Product. Front orientation. Contains Inset. Thread Size Identifiers. Thread-It Screw, Bolt, and Nut Size Identifiers.
    Thread your fastener into holes or onto plugs for quick and accurate size identification.
    For Use With
    For Thread
    Type
    For Thread
    Location
    For Thread Size
    Each
    Inch
     
    Steel
    Screws, Bolts, Threaded Rods, NutsUNC/UNFExternal/Internal6-32, 6-40, 8-32, 10-24, 10-32, 1/4"-20, 1/4"-28, 5/16"-18, 5/16"-24, 3/8"-16, 3/8"-24, 7/16"-14, 7/16"-20,
    1/2"-13, 1/2"-20, 9/16"-12, 9/16"-18, 5/8"-11, 5/8"-18, 3/4"-10, 3/4"-16, 1"-8, 1"-12    		20375A14000000
     
    Inch/Metric
     
    Steel
    Screws, Bolts, Threaded Rods, NutsUNC/UNF/MetricExternal/Internal6-32, 8-32, 10-24, 10-32, 1/4"-20, 1/4"-28, 5/16"-18, 5/16"-24, 3/8"-16, 3/8"-24, 7/16"-14, 7/16"-20,
    1/2"-13, 1/2"-20, M4 × 0.7 mm, M5 × 0.8 mm, M6 × 1 mm, M7 × 1 mm, M8 × 1 mm, M8 × 1.25 mm,
    M10 × 1 mm, M10 × 1.25 mm, M10 × 1.5 mm, M12 × 1.25 mm, M12 × 1.5 mm, M12 × 1.75 mm    		20375A2100000
     

    Wall-Mount Thread-It Screw, Bolt, and Nut Size Identifiers

    Image of Product. Front orientation. Contains Inset. Thread Size Identifiers. Wall-Mount Thread-It Screw, Bolt, and Nut Size Identifiers.
    Mount to a wall for easy access, and thread your fastener into holes or onto plugs for quick and accurate size identification.
    Mounting
    Holes
    For Use With
    For Thread
    Type
    For Thread
    Location
    For Thread Size
    Wd.
    Ht.
    Thk.
    No.
    of
    Hole
    Dia.
    Fasteners
    Included
    Each
    Inch/Metric
     
    Steel
    Screws, Bolts, Threaded Rods, NutsUNC/UNF/MetricExternal/Internal6-32, 8-32, 10-24, 10-32, 1/4"-20, 1/4"-28, 5/16"-18, 5/16"-24, 3/8"-16, 3/8"-24, 7/16"-14, 7/16"-20,
    1/2"-13, 1/2"-20, 9/16"-12, 9/16"-18, M4 × 0.7 mm, M5 × 0.8 mm, M6 × 1 mm, M7 × 1 mm, M8 × 1 mm,
    M8 × 1.25 mm, M10 × 1 mm, M10 × 1.25 mm, M10 × 1.5 mm, M12 × 1.25 mm, M12 × 1.5 mm,
    M12 × 1.75 mm    		3"39"1/2"35/16"No20375A27000000
     

    Threads per Inch and Thread Pitch Identifiers

    Image of ProductInUse. Front orientation. Contains Border. Thread Size Identifiers. Threads per Inch and Thread Pitch Identifiers.
    Image of Product. Front orientation. Thread Size Identifiers. Threads per Inch and Thread Pitch Identifiers.
    Determine threads per inch and thread pitch on nuts, bolts, and other fasteners. Identifiers in a variety of sizes are riveted together in a fan design—pull one out and hold it against your threads to see if it fits. Once you’ve found a match, fold identifiers in to store them in your pocket or tool bag.
    Folded
    For Use With
    For Thread
    Type
    For Thread
    Location
    For Threads per Inch
    For Thread Pitch, mm
    No. of
    Identifiers
    Lg.
    Wd.
    Mfr.
    Mfr. Model
    No.
    Each
    Inch
     
    Steel
    Screws, Bolts, Threaded Rods, NutsUNC/UNFExternal/Internal2 1/4, 2 3/8, 2 1/2, 2 5/8, 2 3/4, 2 7/8, 3, 3 1/4, 3 1/2, 4, 4 1/2, 5, 5 1/2, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 18,
    20, 24, 28    		—273 1/2"7/8"Starrett1552071A114000000
    Screws, Bolts, Threaded Rods, NutsUNC/UNFExternal/Internal3 1/2, 4, 4 1/2, 5, 5 1/2, 6, 7, 8, 9, 10, 11, 11 1/2, 12, 13, 14, 15, 16, 18, 20, 22, 24, 26, 27, 28, 30, 32,
    34, 36    		—282 1/2"5/8"Starrett4842071A11500000
    Screws, Bolts, Threaded Rods, NutsUNC/UNFExternal/Internal4, 4 1/2, 5, 5 1/2, 6, 7, 8, 9, 10, 11, 11 1/2, 12, 13, 14, 15, 16, 18, 20, 22, 24, 26, 27, 28, 30, 32, 34, 36,
    38, 40, 42    		—302 5/8"5/8"Starrett62071A11600000
    Screws, Bolts, Threaded Rods, NutsUNC/UNFExternal/Internal4, 4 1/2, 5, 5 1/2, 6, 7, 8, 9, 10, 11, 11 1/2, 12, 13, 14, 15, 16, 18, 20, 22, 24, 26, 27, 28, 30, 32, 34, 36,
    38, 40, 42    		—302 3/4"1/2"——2071A2500000
    Screws, Bolts, Threaded Rods, NutsUNC/UNFExternal/Internal4, 4 1/2, 5, 5 1/2, 6, 7, 8, 9, 10, 11, 11 1/2, 12, 13, 14, 15, 16, 18, 20, 22, 24, 26, 27, 28, 30, 32, 34, 36,
    38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84    		—512 1/4"2 1/4"——2071A2400000
    Screws, Bolts, Threaded Rods, NutsUNC/UNFExternal/Internal4, 4 1/2, 5, 5 1/2, 6, 7, 8, 9, 10, 11, 11 1/2, 12, 13, 14, 15, 16, 18, 20, 22, 24, 26, 27, 28, 30, 32, 34, 36,
    38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84    		—513 3/8"3/4"Starrett4722071A118000000
    Screws, Bolts, Threaded Rods, NutsUNC/UNFExternal/Internal4, 4 1/2, 5, 6, 7, 8, 9, 10, 11, 11 1/2, 12, 13, 14, 16, 18, 20, 24, 27, 28, 32, 36, 40, 44, 48, 56, 64, 72, 80—282 1/2"5/8"Starrett4742071A11700000
    Screws, Bolts, Threaded Rods, NutsUNC/UNFExternal/Internal6, 7, 8, 9, 10, 11, 11 1/2, 12, 13, 14, 15, 16, 18, 20, 22, 24, 26, 27, 28, 30, 32, 34, 36, 38, 40, 42, 48,
    50, 56, 60    		—302 3/4"1/2"——2071A300000
    Screws, Bolts, Threaded Rods, NutsUNC/UNFExternal/Internal9, 10, 11, 11 1/2, 12, 13, 14, 15, 16, 18, 20, 22, 24, 26, 27, 28, 30, 32, 34, 36, 38, 40—222 3/4"1/2"——2071A100000
     
    Inch/Metric
     
    Steel
    Screws, Bolts, Threaded Rods, NutsUNC/UNF/MetricExternal/Internal4, 4 1/2, 5, 5 1/2, 6, 7, 8, 9, 10, 11, 11 1/2, 12, 13, 14, 15, 16, 18, 20, 22, 24, 26, 28, 29, 30, 32, 34, 36,
    38, 40, 42    		0.4, 0.5, 0.7, 0.75, 0.8, 0.9, 1, 1.25, 1.5, 1.75, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7512 3/4"1/2"——2071A6800000
    Screws, Bolts, Threaded Rods, NutsUNC/UNF/MetricExternal/Internal4, 6, 8, 10, 11, 11 1/2, 12, 13, 16, 20, 28, 32, 40, 560.5, 0.75, 1, 1.25, 1.5, 1.75, 2, 2.5, 3, 3.5, 4, 4.5, 5, 6282 3/4"1/2"——2071A2600000
     

    Thread Identifier Sets

    Image of Product. Front orientation. Thread Size Identifiers. Thread Identifier Sets.
    Set includes calipers and gauges to identify external and internal threads.
    Container
    For Use With
    For Thread Type
    For Thread
    Location
    Type
    Material
    Includes
    Each
    Inch/Metric
     
    Steel
    Screws, Bolts, Threaded Rods, Nuts, PipeNPT, UNC, UNF, BSPT, BSPP, MetricExternal/InternalFolding CasePlasticCaliper, Instruction Book, Two Steel Angle Gauges, Two Steel Gauges7863K1000000
     

    Threads per Inch and Center Identifiers

    Image of Product. Front orientation. Thread Size Identifiers. Threads per Inch and Center Identifiers.
    Identify threads per inch on external threads and find the center of your workpiece to line up thread-cutting tools. This identifier has a corrosion-resistant satin-chrome finish that reduces glare.
    For Use With
    For Thread
    Type
    For Thread
    Location
    For Threads
    per In.
    Lg.
    Wd.
    Thk.
    Mfr.
    Mfr. Model
    No.
    Appearance
    Each
    Inch
     
    Chrome-Plated Steel
    Screws, Bolts, Threaded RodsUNC/UNFExternal14, 20, 24, 322 1/4"3/4"3/64"StarrettC391Satin2072A11000000
     

    Threads per Inch and Thread Pitch Size Checkers

    Image of ProductInUse. Front orientation. Thread Size Identifiers. Threads per Inch and Thread Pitch Size Checkers.
    Image of Attribute. Front orientation. Contains Annotated. Thread Size Identifiers. Threads per Inch and Thread Pitch Size Checkers.
    Inspect fasteners and verify threads with this checker. It includes three wires for each of the pitch diameters. Select the wire that best fits the threads; then calculate the pitch diameter with the equations provided.
    Wire
    Container
    For Use With
    For Thread Type
    For Thread
    Location
    For Threads per In.
    For Thread Pitch, mm
    For Acme Threads per In.
    No. of
    Wires
    Lg.
    Material
    Type
    Material
    Each
    Inch/Metric
    Screws, Bolts, Threaded Rods, PipeNPT, UNC, UNF, Metric, AcmeExternal3, 3 1/2, 4, 4 1/2, 5, 5 1/2, 6, 7, 7 1/2, 8, 9, 10, 11, 11 1/2, 12, 13, 14, 16, 18, 20, 24, 27, 28, 32, 36, 40, 44, 480.5, 0.6, 0.7, 0.75, 0.8, 1, 1.25, 1.5, 1.75, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 63, 4, 5, 6, 8, 10, 12, 14, 16482 3/4"Stainless Steel
    		PouchVinyl Plastic2082A1000000
     
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