Nut Gauges | McMaster-Carr

	For Use With For Use With

	For System of Measurement For System of Measurement

	System of Measurement System of Measurement

	Material Material

	For Thread Location For Thread Location

	For Thread Type For Thread Type

	Thread Size Thread Size

	For Screw Size For Screw Size

	Width Width

	For Pipe Size For Pipe Size

	For Drill Bit Size For Drill Bit Size

	For Nut Size For Nut Size

	For Tube Fitting Material For Tube Fitting Material

	Thickness Thickness

	Height Height

	For Pipe Fitting Size For Pipe Fitting Size

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

DFARS Specialty Metals
COTS-Exempt

	For Pipe Material For Pipe Material

	For Nail Size For Nail Size

	For Thread Pitch For Thread Pitch

	For Tubing Material For Tubing Material

	For Wire Diameter For Wire Diameter

	Graduation Location Graduation Location

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9 Products

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.	Thick.	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"-20, 1/2"-13, 1/2"-20, 9/16"-12, 9/16"-18, M4×0.7, M5×0.8, M6×1, M7×1, M8×1, M8×1.25, M10×1, M10×1.25, M10×1.5, M12×1.25, M12×1.5, M12×1.75, 7/16"-14	3"	39"	1/2"	3	5/16"	No	00000000	000000

Thread-It Screw, Bolt, and Nut Size Identifiers

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

Inch
For Use With	For Thread Type	For Thread Location	For Thread Size		Each
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, M5×0.8, M6×1, M7×1, M8×1, M8×1.25, M10×1, M10×1.25, M10×1.5, M12×1.25, M12×1.5, M12×1.75	00000000	00000
Metric
Steel
Screws, Bolts, Threaded Rods, Nuts	Metric	External/Internal	M3×0.5, M4×0.7, M5×0.8, M6×1, M7×1, M8×1, M8×1.25, M10×1, M10×1.25, M10×1.5, M12×1.25, M12×1.5, M12×1.75, M14×1.5, M14×2, M16×1.5, M16×2, M20×1.5, M20×2.5, M24×2, M24×3	00000000	00000

Screw, Bolt, and Nut Size Identifiers

Inch

Inch/Metric

Metric

Use on external and internal fastener threads.

Inch
For Use With	For Thread Type	For Thread Location	For Screw Size	For Thread Pitch	For Nut Size	Wd.	Ht.	Thick.		Each
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 mm, 1.25 mm, 1.5 mm, 1.75 mm, 2 mm	M10, M11, M13, M17, M19, M22, M24	5 1/4"	3 3/16"	1/64"	000000000	0000

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

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)