Tap Charts | McMaster-Carr

	System of Measurement (MV) System of Measurement (MV)

Inch

Metric

	Media Type Media Type

Chart

Ruler

	Height Height

	Width Width

	Material Material

Steel

Stainless Steel

Plastic

	For Use With For Use With

	For Drill Bit Size For Drill Bit Size

	For System of Measurement For System of Measurement

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	For Pipe Fitting Size For Pipe Fitting Size

	For Pipe Size For Pipe Size

	For Pipe Material For Pipe Material

Brass

PVC

Steel

	For Screw Size For Screw Size

	Numeric Increments Numeric Increments

8/64"

1 cm

	Graduation Location Graduation Location

Front

Back

	Graduation Marks Graduation Marks

	For Wire Gauge For Wire Gauge

20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1

	For Tube Fitting Material For Tube Fitting Material

Copper

Plastic

	For Tube Fitting Size For Tube Fitting Size

	For Nut Size For Nut Size

	For Tubing Material For Tubing Material

12 Products

Reference Charts

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

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.

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

Tap and Drill Reference 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.	Marks	Color	Location	Numeric Increments	Material	Features		Each
7"	1 1/4"	64ths	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

Drill Bit Size Identifiers

Inch

Letter

Metric

Wire Gauge

Measure drill bit sizes with these identifiers.

Drill/tap identifier includes a tap size conversion chart.

For System of Measurement	For Use With	For Drill Bit Size	Wd.	Ht.	Thick.	Material	Color	Mounting Hole Dia.		Each
Inch	Drills	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"	2 1/2"	6 1/2"	5/64"	Steel	Silver	1/8"	0000000	000000
Letter	Drills	A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z	2 1/2"	6 1/2"	5/64"	Steel	Silver	1/8"	0000000	00000
Metric	Drills	1.5 mm, 2.0 mm, 2.25 mm, 2.5 mm, 2.75 mm, 3.0 mm, 3.25 mm, 3.5 mm, 3.75 mm, 4.0 mm, 4.25 mm, 4.5 mm, 4.75 mm, 5.0 mm, 5.5 mm, 6.0 mm, 6.5 mm, 7.0 mm, 7.5 mm, 8.0 mm, 8.5 mm, 9.0 mm, 9.5 mm, 10.0 mm, 10.5 mm, 11.0 mm, 11.5 mm, 12.0 mm, 12.5 mm, 5.25 mm	2 1/2"	6 1/2"	5/64"	Steel	Silver	1/8"	0000000	00000
Wire Gauge	Drills	80 ga, 79 ga, 78 ga, 77 ga, 76 ga, 75 ga, 74 ga, 73 ga, 72 ga, 71 ga, 70 ga, 69 ga, 68 ga, 67 ga, 66 ga, 65 ga, 64 ga, 63 ga, 62 ga, 61 ga	1"	3"	5/64"	Steel	Silver	1/8"	0000000	00000
Wire Gauge	Drills/Taps	60 ga, 59 ga, 58 ga, 57 ga, 56 ga, 55 ga, 54 ga, 53 ga, 52 ga, 51 ga, 50 ga, 49 ga, 48 ga, 47 ga, 46 ga, 45 ga, 44 ga, 43 ga, 42 ga, 41 ga, 40 ga, 39 ga, 38 ga, 37 ga, 36 ga, 35 ga, 34 ga, 33 ga, 32 ga, 31 ga, 30 ga, 29 ga, 28 ga, 27 ga, 26 ga, 25 ga, 24 ga, 23 ga, 22 ga, 21 ga, 20 ga, 19 ga, 18 ga, 17 ga, 16 ga, 15 ga, 14 ga, 13 ga, 12 ga, 11 ga, 10 ga, 9 ga, 8 ga, 7 ga, 6 ga, 5 ga, 4 ga, 3 ga, 2 ga, 1 ga	2 1/2"	6 1/2"	5/64"	Steel	Silver	1/8"	0000000	00000

All-in-One Identifiers

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

Plastic
For Use With (Number of Sizes)	Wd.	Ht.	Material		Each
Tube (9), Tube Fittings (6), Pipe (9), Pipe Fittings (6), Screws and Bolts (20), Threaded Rods, Nuts (14), Nails (11), Wire (30), Drill Bits (21)	8 11/16"	4 1/4"	Plastic	00000000	00000
Tube (11), Tube Fittings (10), Pipe (16), Pipe Fittings (10), Screws and Bolts (20), Threaded Rods, Nuts (20), Nails (16), Wire (51), Drill Bits (50)	10 1/2"	3 1/2"	Plastic	00000000	0000