Screw Guides | McMaster-Carr

Filter by

System of Measurement

Thread Size

Material

For Use With

Flexible-Shaft Drill Bits

Removable Drill Bushings

Rivets

Screws

Threaded Drill Bushings

Thread Type

Screw Size

Diameter

Thread Location

Thread Pitch

Drive Style

Manufacturer

Number of Identifiers

Drill Bit Size

Width

RoHS

Length

Container Type

Shank Type

Height

Overall Length

Thickness

Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

Drive Size

REACH

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

Forward

How can we improve?

67 Products

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

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

Reference Charts

Style C

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

	System of Measurement		Each
Socket Screw Specifications



	C	Inch	000000000	00000


	C	Metric	000000000	0000

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

Screw-Guiding Slotted Bits

Drive long slotted screws with zero wobble. A spring-loaded sleeve slips over the screw to keep it straight while you tighten. The sleeve also keeps your fingers off the fastener threads, so you can steer clear of cuts and friction burns. However, since these bits only have two points of contact, they may slip out of the fastener head if you use too much force.

Quick-Change Hex Shank—Lock these bits directly into power tools. They won't wobble as much as bits paired with an adapter, so they are the best choice for high-precision tasks.

Steel—Best for dry environments, since moisture will cause these bits to rust.

			Overall
	Drive Size	For Screw Size	Lg.	Dia.	Material		Each
For Power Tools







				1/4" Quick-Change Hex Shank Size

				0.193"	No. 4, No. 5, No. 6	3 3/4"	0.375"	Steel	0000000	00000


				0.241"	No. 6, No. 7, No. 8	2 1/8"	0.438"	Steel	0000000	0000
				0.241"	No. 6, No. 7, No. 8	3 3/4"	0.438"	Steel	0000000	0000
				0.290"	No. 8, No. 9, No. 10	2 1/8"	0.5"	Steel	0000000	0000
				0.290"	No. 8, No. 9, No. 10	3 3/4"	0.5"	Steel	0000000	00000
				0.290"	No. 8, No. 9, No. 10	6 3/4"	0.5"	Steel	0000000	00000
				0.350"	No. 10, No. 11, No. 12	3 3/4"	0.563"	Steel	0000000	0000
				0.395"	No. 12, No. 14	3 7/8"	0.625"	Steel	0000000	0000
				0.457"	No. 14, No. 16	4 1/8"	0.688"	Steel	0000000	0000

Screw-Guiding Phillips Bits

Drive long Phillips screws with zero wobble. A spring-loaded sleeve slips over the screw to keep it straight while you tighten. The sleeve also keeps your fingers off the fastener threads, so you can steer clear of cuts and friction burns. Phillips bits align easily with fasteners and deliver more torque than slotted bits.

Quick-Change Hex Shank—Lock these bits directly into power tools. They won't wobble as much as bits paired with an adapter, so they are the best choice for high-precision tasks.

Steel—Best for dry environments, since moisture will cause these bits to rust.

			Overall
	Drive Size	For Screw Size	Lg.	Dia.	Material		Each
For Power Tools







				1/4" Quick-Change Hex Shank Size

				No. 2	No. 5, No. 6, No. 7, No. 8, No. 9, No. 10	3 1/2"	0.438"	Steel	0000000	000000


				No. 2	No. 5, No. 6, No. 7, No. 8, No. 9, No. 10	6"	0.438"	Steel	0000000	00000

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

Hole Spacers


	Shown Extended to the 1" Marking Increment

Mark even spacing for rivets and other fasteners before you drill. Push and pull the ends of these hole spacers to create the distance between holes that you need.

		Hole
No. of Holes	Marking Increments	Dia.	Spacing	Lg.	Material		Each
10	3/4", 1", 1 1/4", 1 1/2"	1/8"	1/2" to 2"	5 1/4" to 17 1/2"	Stainless Steel	0000000	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

Handheld Drill Bit Guides

Hold these sleeves against a workpiece to guide your drill. Originally used for aerospace manufacturing, they help you create precise, consistent holes without using a fixture plate. They’re made to tight dimensional tolerances for accurate results. Made of polycarbonate, these sleeves are strong and lightweight. They’re also clear, so you can see the surface you’re drilling.

For Removable Drill Bushings


Sleeve	Kit

Sleeves—Sleeves are compatible with removable drill bushings. They include a lock screw to keep the bushing from spinning.

Kits—Kits include three sleeves and nine compatible bushings in common drill bit sizes.

Component	For Bushing OD	Includes	ID	OD	Lg.	For Drill Bushing Type	Material		Each
Sleeve	1/2"	Lock Screw	1/2"	1 3/4"	1 3/4"	SF	Polycarbonate	0000000	000000
Kit	1/2"	3 Sleeves 9 Drill Bushings (1 each for 40 Ga., 30 Ga., 5/32", 21 Ga., 3/16", 10 Ga., 7/32", 1/4", and F drill bit sizes) 3 Lock Screws	1/2"	1 3/4"	1 3/4"	SF	Polycarbonate	0000000	000000

For Threaded Drill Bushings


Sleeve	Kit

Sleeves—Sleeves are compatible with threaded drill bushings.

Kits—Kits include three sleeves and nine compatible bushings in common drill bit sizes.

Component	For Bushing Thread Size	Includes	ID	OD	Lg.	Material		Each
Sleeve	1/2"-13	—	1/2"	1 3/4"	1 3/4"	Polycarbonate	0000000	000000
Kit	1/2"-13	3 Sleeves 9 Drill Bushings (1 each for 40 Ga., 30 Ga., 5/32", 21 Ga., 3/16", 10 Ga., 7/32", 1/4", and F drill bit sizes)	1/2"	1 3/4"	1 3/4"	Polycarbonate	0000000	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

Ball Guides for Flexible-Shaft Drill Bits


Ball Guide with Drill Bit	Ball Guides

Keep flexible-shaft drill bits centered between studs and drywall.

For Drill Bit
Shank Type	Shank Size	Shaft Size	Material	Dia.	No. of Guides		Each
Round	3/16"	3/16"	Plastic	1 1/2", 2"	2	000000	000000

Clamp-On Drill Bit Guides

Drill precise holes without building a fixture. Clamp the jig onto your material and lift and turn the turret to select the hole size you need. Use the graduations to set the jig to the centerline of your workpiece.

For Drill Bit Size	For Drill Bit Size Decimal Equiv.	Max. Opening Wd.	Lg.	Wd.	Ht.	Material		Each
3/16", 1/4", 5/16", 3/8", 7/16", 1/2"	0.1875", 0.25", 0.3125", 0.375", 0.4375", 0.5"	4"	7 1/8"	3 1/2"	2 1/8"	Steel, Nylon	0000000	000000

Handheld Guides for Flexible-Shaft Drill Bits


Hand Guide with Drill Bit	Hand Guide

Use this guide to position flexible-shaft drill bits.

For Drill Bit
Shank Type	Shaft Size	Lg.	Material		Each
Round	3/16", 1/4"	10"	Steel	000000	000000

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, Pipe	NPT, UNC, UNF, BSPT, BSPP, Metric	External/Internal	Folding Case	Plastic	Caliper, Instruction Book, Two Steel Angle Gauges, Two Steel Gauges	000000	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

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, Pipe	NPT, UNC, UNF, Metric, Acme	External	3, 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, 48	0.5, 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, 6	3, 4, 5, 6, 8, 10, 12, 14, 16	48	2 3/4"	Stainless Steel	Pouch	Vinyl Plastic	000000	000000

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

Hole-Finding Drill Guides

Locating Pin Down Shown in

Use

Locating Pin Down

Locating Pin Up

Drill a hole in sheet metal that aligns with an existing hole in another piece. These guides line up with the original hole so you know where to drill. Also known as strap duplicators.

Locating Pin Down—The most common guides. Use these when sheet metal pieces aren’t attached or can be pried apart.

Locating Pin Up—Use these guides when two panels are held tightly together and you can’t get beneath the sheet with a drill.

Locating Pin Position	No. of Guides	For Drill Bit Size	Lg.	Wd.	Material		Each
Down	5	1/4", 10 Ga., 21 Ga., 30 Ga., 40 Ga.	6"	5/8"	Steel	0000000	000000
Up	5	1/4", 10 Ga., 21 Ga., 30 Ga., 40 Ga.	6"	5/8"	Steel	0000000	00000

Drill Bit Guides

Place these guides on your workpiece to drill precise holes without building a fixture. They'll even work on corners and round surfaces. Lines marked on the side allow you to align your holes accurately. Made of hardened steel, they’re tough enough to withstand frequent use.

For Drill Bit Size	For Drill Bit Size Decimal Equiv.	Lg.	Wd.	Ht.	Material		Each
3/64", 1/16", 5/64", 3/32", 7/64", 1/8", 53 Ga., 50 Ga., 47 Ga., 45 Ga., 43 Ga., 40 Ga., 38 Ga., 37 Ga., 36 Ga., 33 Ga., 30 Ga., 29 Ga., 25 Ga., 21 Ga., 10 Ga.	0.0469", 0.0595", 0.0625", 0.07", 0.0781", 0.0785", 0.082", 0.089", 0.0938", 0.098", 0.1015", 0.104", 0.1065", 0.1094", 0.113", 0.125", 0.128", 0.136", 0.1495", 0.159", 0.1935"	3 5/8"	5/8"	1/2"	Steel	0000000	000000
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"	0.125", 0.1406", 0.1563", 0.1719", 0.1875", 0.2031", 0.2188", 0.2344", 0.25", 0.2656", 0.2813", 0.2969", 0.3125", 0.3281", 0.3438", 0.3594", 0.375"	5 1/2"	3/4"	7/8"	Steel	0000000	00000
3/8", 25/64", 13/32", 27/64", 7/16", 29/64", 15/32", 31/64", 1/2"	0.375", 0.3906", 0.4063", 0.4219", 0.4375", 0.4531", 0.4688", 0.4844", 0.5"	5 1/4"	1"	7/8"	Steel	0000000	00000
33/64", 17/32", 35/64", 9/16", 37/64", 19/32", 39/64", 5/8"	0.5156", 0.5313", 0.5469", 0.5625", 0.5781", 0.5938", 0.6094", 0.6250"	5 1/2"	1 1/8"	1 1/8"	Steel	00000000	00000
3 mm, 3.3 mm, 3.5 mm, 4 mm, 4.2 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 6.8 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm	0.1181", 0.1299", 0.1378", 0.1575", 0.1654", 0.1772", 0.1968", 0.2165", 0.2362", 0.2559", 0.2677", 0.2756", 0.2953", 0.315", 0.3346", 0.3543", 0.374"	5 1/2"	3/4"	7/8"	Steel	0000000	00000
10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm	0.3937", 0.4134", 0.4331", 0.4528", 0.4724", 0.4921", 0.5118", 0.5315", 0.5512"	5 1/4"	1"	1 5/8"	Steel	0000000	00000