Thread Charts | McMaster-Carr

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Decimal Equivalents and Drill Sizes

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58 Products

Reference Charts


Style A	Style B	Style C

Style A—Style A charts provide decimal equivalents of fractions, wire gauge drill sizes, letter drill sizes, and metric sizes.

Style B—Style B charts provide a pipe tap drill chart as well as decimal equivalents of tap drill sizes, fractions, wire gauge drill sizes, letter drill sizes, and metric sizes.

Style C—Style C charts list specifications and torque tightening guidelines for alloy steel socket screws.

	System of Measurement	Ht.	Wd.	Mounting Location		Each
Decimal Equivalents and Drill Sizes



	A	Inch, Metric	6"	3 3/8"	—	0000000	00000


	A	Inch, Metric	13"	8 1/2"	Wall	0000000	0000
	B	Inch, Metric	6"	3 3/8"	—	0000000	0000
	B	Inch, Metric	13"	8 1/2"	Wall	0000000	0000


	Socket Screw Specifications



			C	Inch	—	—	—	000000000	0000


			C	Metric	—	—	—	000000000	0000

Tap and Drill Chart/Rulers

One side of this ruler lists tap and drill sizes. The other side has a decimal equivalent table and a 6" rule.

			Graduation
Lg.	Wd.	Graduations	Color	Location	Numeric Graduations	Material	Features		Each
7"	1 1/4"	1/64"	Black	Front	8/64"	Stainless Steel	Tap and Drill Sizes for UNF, UNC, Metric ISO, and American Standard Pipe Thread Sizes Decimal Equivalent Table for 1/64" to 63/64" Hanging Hole	0000000	00000

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, Nuts	UNC/UNF/Metric	External/Internal	6-32, 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"	3	5/16"	No	00000000	000000

Screw Size Identifiers


Inch	Metric

Find thread size, screw size, diameter, or drill bit size.

	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 Bits	UNC/UNF	External	1-64, 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, I	3"	5 1/8"	5/64"	000000000	000000


	Metric







					Steel

					Screws, Bolts, Threaded Rods	Metric	External	M8 × 0.75 mm, M8 × 1 mm, M8 × 1.25 mm, M9 × 0.75 mm, M9 × 1 mm, M9 × 1.25 mm, M10 × 0.75 mm, M10 × 1 mm, M10 × 1.25 mm, M10 × 1.5 mm, M11 × 0.75 mm, M11 × 1 mm, M11 × 1.5 mm, M12 × 1 mm, M12 × 1.25 mm, M12 × 1.5 mm, M12 × 1.75 mm, M14 × 1.25 mm, M14 × 1.5 mm, M14 × 2 mm	M8, M9, M10, M11, M12, M14	—	—	5 1/8"	5 3/8"	1/8"	000000000	00000


					Screws, Bolts, Threaded Rods, Drill Bits	Metric	External	M2 × 0.25 mm, M2 × 0.4 mm, M2.2 × 0.25 mm, M2.2 × 0.45 mm, M2.5 × 0.35 mm, M2.5 × 0.45 mm, M3 × 0.35 mm, M3 × 0.5 mm, M3.5 × 0.35 mm, M3.5 × 0.6 mm, M4 × 0.5 mm, M4 × 0.7 mm, M4.5 × 0.5 mm, M4.5 × 0.75 mm, M5 × 0.5 mm, M5 × 0.8 mm, M5.5 × 0.5 mm, M6 × 0.75 mm, M6 × 1 mm, M7 × 0.75 mm, M7 × 1 mm	M2, M2.2, M2.5, M3, M3.5, M4, M4.5, M5, M5.5, M6, M7	—	7/32", 52 Ga., 50 Ga., 48 Ga., 46 Ga., 45 Ga., 43 Ga., 39 Ga., 37 Ga., 32 Ga., 31 Ga., 30 Ga., 28 Ga., 25 Ga., 22 Ga., 21 Ga., 18 Ga., 16 Ga., 10 Ga., 8 Ga., 4 Ga., B, D, J	3"	5 3/8"	3/32"	000000000	00000

Screw, Bolt, and Nut Size Identifiers


Inch	Inch/Metric	Metric

Use on external and internal fastener threads.

	For Screw Size	For Thread Pitch, mm	For Nut Size	Wd.	Ht.	Thk.		Each
Inch







	Plastic

	Screws, Bolts, Threaded Rods, Nuts	—	External/Internal	No. 8, No. 10, 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 3/4"	—	No. 8, No. 10, 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8"	7 1/2"	2 3/8"	1/64"	000000000	00000


	Inch/Metric







					Plastic

					Screws, Bolts, Threaded Rods, Nuts	—	External/Internal	No. 6, No. 8, No. 10, 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 3/4", 1", M6, M7, M8, M10, M12, M14, M16, M18, M20, M22	—	No. 8, No. 10, 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8"	9"	3 3/4"	1/64"	000000000	0000


					Metric







									Plastic

									Screws, Bolts, Threaded Rods, Nuts	Metric	External/Internal	M6, M7, M8, M10, M12, M14, M16	1, 1.25, 1.5, 1.75, 2	M10, M11, M13, M17, M19, M22, M24	5 1/4"	3 3/16"	1/64"	000000000	0000

Thread-It Screw, Bolt, and Nut Size Identifiers

Thread your fastener into holes or onto plugs for quick and accurate size identification.

	For Thread Size		Each
Inch







	Steel

	Screws, Bolts, Threaded Rods, Nuts	UNC/UNF	External/Internal	6-32, 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	00000000	000000


	Inch/Metric







					Steel

					Screws, Bolts, Threaded Rods, Nuts	UNC/UNF/Metric	External/Internal	6-32, 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	00000000	00000


					Metric







									Steel

									Screws, Bolts, Threaded Rods, Nuts	Metric	External/Internal	M3 × 0.5 mm, 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, M14 × 1.5 mm, M14 × 2 mm, M16 × 1.5 mm, M16 × 2 mm, M20 × 1.5 mm, M20 × 2.5 mm, M24 × 2 mm, M24 × 3 mm	00000000	00000

All-in-One Identifiers

Find tube, pipe, fastener, wire, and drill bit sizes with one tool.

For Pipe Size	For Pipe Fitting Size	Wd.	Ht.		Each







Plastic

Screws, Bolts, Threaded Rods, Drill Bits, Nails, Nuts, Tube Fittings, Pipe, Pipe Fittings, Tubing, Wire	No. 2, No. 3, No. 4, No. 5, No. 6, No. 8, No. 10, No. 12, 1/4", 5/16", 3/8", 7/16", 1/2", M3, M4, M5, M6, M8, M10, M12	1/32", 3/64", 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4", 17/64", 9/32", 19/64", 5/16", 21/64", 11/32", 23/64", 3/8", 25/64", 13/32", 27/64", 7/16", 29/64", 15/32", 31/64", 1/2", 65 Ga., 60 Ga., 55 Ga., 50 Ga., 45 Ga., 40 Ga., 35 Ga., 30 Ga., 25 Ga., 20 Ga., 15 Ga., 10 Ga., 5 Ga., A, F, K, P, U, Z	1/16, 1/8, 1/4, 3/8, 1/2, 3/4, 1, 1 1/4, 1 1/2, 2, 2 1/2, 3, 3 1/2, 4, 5, 6	1/16, 1/8, 1/4, 3/8, 1/2, 3/4, 1, 1 1/4, 1 1/2, 2	10 1/2"	3 1/2"	00000000	00000


Screws, Bolts, Threaded Rods, Drill Bits, Nails, Nuts, Tube Fittings, Pipe, Pipe Fittings, Tubing, Wire	No. 2, No. 3, No. 4, No. 5, No. 6, No. 8, No. 10, No. 12, 1/4", 5/16", 3/8", 7/16", 1/2", M3, M4, M5, M6, M8, M10, M12	1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4", 17/64", 9/32", 19/64", 5/16", 21/64", 11/32", 23/64", 3/8"	1/8, 1/4, 3/8, 1/2, 3/4, 1, 1 1/4, 1 1/2, 2	1/8, 1/4, 3/8, 1/2, 3/4, 1	8 11/16"	4 1/4"	00000000	0000

Pipe, Tubing, and Hose Size Identifiers


For Pipe, Tubing, And Hose	For Pipe, Pipe Fittings, And Hose

Determine pipe size and inner and outer diameter.

Stainless Steel—Identifier is stainless steel for corrosion resistance.

	For Tube OD	For Hose ID	Includes	Wd.	Ht.	Thk.	Color		Each
Inch







	Plastic

	Pipe, Hose, Tubing	1/8, 1/4, 3/8, 1/2, 3/4	—	1/8", 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 5/8", 3/4", 1"	1/4", 3/8", 1/2", 3/4", 1"	Compression Fitting Chart	9"	3 3/4"	7/64"	Blue	0000000	00000




			Stainless Steel

			Pipe, Pipe Fittings, Hose	1/8, 1/4, 3/8, 1/2, 3/4, 1, 1 1/4, 1 1/2, 2	1/8, 1/4, 3/8, 1/2, 3/4, 1, 1 1/4, 1 1/2, 2	—	1/8", 1/4", 5/16", 3/8", 5/8", 3/4", 7/8", 1", 1 1/8", 1 1/4"	—	3 3/4"	4 1/2"	1/32"	Silver	00000000	00000

Pipe Thread and Thread Pitch Identifiers

In addition to checking NPT and BSPT pipe sizes, use the two included gauges for measuring thread pitch.

For Thread Type	For Pipe Size	For Gender	Wd.	Ht.	Thk.	Thread Size Identifier Material	Thread Pitch Identifier Material	Color		Each



Pipe	BSPT, NPT	1/8, 1/4, 3/8, 1/2, 3/4, 1, 1 1/4, 1 1/2, 2	Female, Male	9"	4 1/4"	1/4"	Plastic	Steel	Blue	000000	00000

Pipe Size Chart/Rulers

Measure outer diameter and mark lines around pipe. A pipe size conversion chart is printed on these chart/rulers. They’re fiber-reinforced rubber for grease, oil, gasoline, and salt water resistance.

	Lg.	Wd.	Thk.	Measuring Lg.	Graduations (Numeric Graduations)	Color	Graduation Color	Max. Temp., ° F		Each
Rubber



	1" to 6", 2 mm to 60 cm	30"	2 5/8"	3/64"	28"	1/16" (1"), 2 mm (1 cm)	Gray	White	360	0000000	000000


	2" to 16", 2 mm to 78 cm	60"	3 7/8"	3/64"	36"	1/16" (1"), 2 mm (1 cm)	Gray	White	360	0000000	00000
	6" to 30", 2 mm to 77 cm	120"	5 1/4"	3/64"	36"	1/16" (1"), 2 mm (1 cm)	Gray	White	360	0000000	00000

Pipe Thread Identifiers

Check external NPT thread size and taper.

For Pipe Size	Wd.	Ht.	Thk.	Color		Each







Aluminum

Pipe	NPT	External	1/16, 1/8, 1/4, 3/8, 1/2	2"	3"	1/4"	Blue	000000	000000

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, Nuts	BSW	External/Internal	3 1/2, 4, 4 1/2, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 18, 19, 20, 22, 24, 25, 26, 28, 30, 32, 36, 40, 44, 48, 50, 60	—	30	2"	1/2"	Starrett	476	00000000	000000


				Screws, Bolts, Threaded Rods	BSW	External/Internal	4, 4 1/2, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 18, 19, 20, 22, 24, 25, 26, 28, 30, 32, 34, 36, 40, 48, 60	—	28	2 3/4"	3/4"	Mitutoyo	188-102	000000	00000
				Screws, Bolts, Threaded Rods	BSW	External/Internal	4, 4 1/2, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 18, 19, 20, 22, 24, 25, 26, 28, 30, 32, 36, 40, 48, 60, 62	—	28	2 3/4"	1/2"	—	—	0000000	00000
				Screws, Bolts, Threaded Rods, Nuts	UNC/UNF	External/Internal	2 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	—	27	3 1/2"	7/8"	Starrett	155	00000000	00000
				Screws, Bolts, Threaded Rods, Nuts	UNC/UNF	External/Internal	3 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	—	28	2 1/2"	5/8"	Starrett	484	00000000	00000
				Screws, Bolts, Threaded Rods, Nuts	UNC/UNF	External/Internal	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, 38, 40, 42	—	30	2 5/8"	5/8"	Starrett	6	00000000	00000
				Screws, Bolts, Threaded Rods, Nuts	UNC/UNF	External/Internal	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, 38, 40, 42	—	30	2 3/4"	1/2"	—	—	0000000	00000
				Screws, Bolts, Threaded Rods, Nuts	UNC/UNF	External/Internal	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, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84	—	51	2 1/4"	2 1/4"	—	—	0000000	00000
				Screws, Bolts, Threaded Rods, Nuts	UNC/UNF	External/Internal	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, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84	—	51	3 3/8"	3/4"	Starrett	472	00000000	000000
				Screws, Bolts, Threaded Rods, Nuts	UNC/UNF	External/Internal	4, 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	—	28	2 1/2"	5/8"	Starrett	474	00000000	00000
				Screws, Bolts, Threaded Rods, Nuts	UNC/UNF	External/Internal	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, 48, 50, 56, 60	—	30	2 3/4"	1/2"	—	—	000000	00000


				Screws, Bolts, Threaded Rods, Nuts	UNC/UNF	External/Internal	9, 10, 11, 11 1/2, 12, 13, 14, 15, 16, 18, 20, 22, 24, 26, 27, 28, 30, 32, 34, 36, 38, 40	—	22	2 3/4"	1/2"	—	—	000000	00000




						Stainless Steel

						Screws, Bolts, Threaded Rods, Nuts	Acme	External/Internal	1, 1 1/3, 1 1/2, 1 3/4, 2, 2 1/2, 3, 3 1/2, 4, 5, 6, 7, 8, 9, 10, 12	—	16	4 3/4"	1"	—	—	0000000	000000


						Inch/Metric







										Steel

										Screws, Bolts, Threaded Rods, Nuts	BSW/Metric	External/Internal	4, 4 1/2, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 18, 19, 20, 22, 24, 25, 26, 28, 30, 32, 36, 40, 48, 60, 62	0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.6, 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	52	2 3/4"	1/2"	—	—	00000000	00000


										Screws, Bolts, Threaded Rods, Nuts	BSW/Metric	External/Internal	4, 4 1/2, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 18, 19, 20, 22, 24, 25, 26, 28, 30, 32, 36, 40, 48, 60, 62	0.4, 0.5, 0.6, 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, 7	50	2 3/4"	1/2"	—	—	00000000	00000
										Screws, Bolts, Threaded Rods, Nuts	UNC/UNF/Metric	External/Internal	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, 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, 7	51	2 3/4"	1/2"	—	—	0000000	00000
										Screws, Bolts, Threaded Rods, Nuts	UNC/UNF/Metric	External/Internal	4, 6, 8, 10, 11, 11 1/2, 12, 13, 16, 20, 28, 32, 40, 56	0.5, 0.75, 1, 1.25, 1.5, 1.75, 2, 2.5, 3, 3.5, 4, 4.5, 5, 6	28	2 3/4"	1/2"	—	—	0000000	00000


										Metric







														Steel

														Screws, Bolts, Threaded Rods, Nuts	Metric	External/Internal	—	0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 1, 1.1, 1.2, 1.25, 1.3, 1.4, 1.5, 1.6, 1.7, 1.75, 1.8, 1.9, 2, 2.5	28	2 1/2"	1/2"	Starrett	156M	0000000	00000


Screws, Bolts, Threaded Rods, Nuts	Metric													External/Internal	—	0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 1, 1.1, 1.2, 1.25, 1.3, 1.4, 1.5, 1.6, 1.7, 1.75, 1.8, 1.9, 2, 2.5	28	2 3/4"	1/2"	—	—	0000000	00000
Screws, Bolts, Threaded Rods, Nuts	Metric													External/Internal	—	0.4, 0.5, 0.6, 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, 7	22	2 3/4"	1/2"	—	—	0000000	00000
Screws, Bolts, Threaded Rods, Nuts	Metric													External/Internal	—	0.5, 0.75, 1, 1.1, 1.25, 1.5, 1.75, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, 11.5	27	3 1/2"	5/8"	Starrett	159M	00000000	00000




		Stainless Steel

		Screws, Bolts, Threaded Rods, Nuts	Metric Trapezoidal											External/Internal	—	2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16, 20	12	4 3/4"	3/4"	—	—	00000000	00000

Pipe Size Measuring Kits

Kits contain pipe fittings in a variety of sizes so you can determine the size of a pipe or fitting without measuring.

			NPT Thread		BSPT Thread
No. of Pieces	Includes	Material		Each		Each
6	One 90° male × female elbow in each pipe size: 1/8, 1/4, 3/8, 1/2, 3/4, 1	304 Stainless Steel	000000	000000	000000	000000
9	One 90° male × female elbow in each pipe size: 1/8, 1/4, 3/8, 1/2, 3/4, 1, 1 1/4, 1 1/2, 2	304 Stainless Steel	000000	000000	000000	000000

Acme Thread Identifiers

Identify Acme threads and use as a guide while grinding and cutting Acme threads to a 29° included angle.

	For Acme Threads per In.	Wd.	Ht.	Thk.		Each
Inch







	Steel

	Screws, Bolts, Threaded Rods	Acme	External	1, 1 1/3, 1 1/2, 1 3/4, 2, 2 1/2, 3, 4, 5, 6, 7, 8, 9, 10	3 3/8"	1 5/8"	7/64"	0000000	000000

Pipe Size Tape Measures

Curl around pipe and pipe fittings to quickly determine their size—no math required. These tape measures are especially useful for measuring mounted pipe since you don’t need to take your system apart.

		Blade
For Pipe Material	For Pipe Size	Wd.	Material		Each



	Galvanized Steel, Iron, PVC Copper, CPVC	1/8, 1/4, 3/8, 1/2, 3/4, 1, 1 1/4, 1 1/2, 2, 2 1/2, 3, 3 1/2, 4, 5, 6, 8, 10, 12, 14, 16, 18 1/4, 3/8, 1/2, 5/8, 3/4, 7/8, 1, 1 1/8, 1 1/4, 1 1/2, 2, 2 1/2, 3, 3 1/2, 4, 5, 6, 8, 10, 12	5/16"	Plastic	0000000	000000

Thread Gauges for Lug Nuts

Identify the most common bolt thread sizes.

Each







Aluminum

External/Internal	7/16"-20 1/2"-20 9/16"-18 M12 × 1.25 mm M12 × 1.5 mm M12 × 1.75 mm M14 × 1.25 mm M14 × 1.5 mm M14 × 2 mm M16 × 1.5 mm	00000000	000000

Threaded Plug Gauges with Handle for Pipe Threads

NPT Thread

Verify whether pipe fitting threads fall within tolerance. These gauges are attached to a handle, giving you a solid gripping point to thread and unthread them quickly. All are precisely manufactured to tight thread tolerances. If the gauges wear down, you can install new ones (not included) on the taperlock handle.

NPT Thread—Gauges with NPT, NPTF, and BSPT threads have a notch to indicate whether the threads you’re checking are within tolerance. If it takes no more than one turn for the notch to sit flush against the end of your fitting, the threads are within tolerance.

	Pitch Dia. Tolerance	Hardness	Material	Features		Each
NPT Thread



	2 1/2	-0.0005" to 0.0005"	Rockwell C60	Tool Steel	Taperlock Handle	00000000	0000000


	4	-0.0005" to 0.0005"	Rockwell C60	Tool Steel	Taperlock Handle	00000000	000000

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 Threads per In.	Lg.	Wd.	Thk.	Mfr.	Mfr. Model No.	Appearance		Each
Inch







	Chrome-Plated Steel

	Screws, Bolts, Threaded Rods	UNC/UNF	External	14, 20, 24, 32	2 1/4"	3/4"	3/64"	Starrett	C391	Satin	0000000	000000