Blind-Hole Spotters | McMaster-Carr

	System of Measurement System of Measurement

Inch

Metric

	Thread Size Thread Size

	Thread Pitch Thread Pitch

	Diameter Diameter

	For Hole Type For Hole Type

Unthreaded

Threaded

	Number of Pieces Number of Pieces

108

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

DFARS Specialty Metals
COTS-Exempt

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

RoHS Compliant

RoHS Compliant with
Exemptions

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

REACH Compliant

	Container Type Container Type

110 Products

Center-Locating Punches for Unthreaded Closed-End Holes

Also known as blind-hole spotters, these punches fit into closed-end holes and mark the center of a complementary hole. Once the punch is fitted in a hole, place your workpiece against the punch and strike with a hammer to make an indentation.

Inch
Dia.	Punch Material	Grip Texture	Pkg. Qty.		Pkg.
1/8"	Steel	Smooth	6	00000000	00000
5/32"	Steel	Smooth	6	00000000	0000
3/16"	Steel	Smooth	6	00000000	0000
7/32"	Steel	Smooth	6	00000000	00000
1/4"	Steel	Smooth	6	00000000	0000
9/32"	Steel	Smooth	6	00000000	0000
5/16"	Steel	Smooth	6	00000000	0000
11/32"	Steel	Smooth	6	00000000	0000
3/8"	Steel	Smooth	6	00000000	0000
13/32"	Steel	Smooth	6	00000000	0000
7/16"	Steel	Smooth	6	00000000	00000
15/32"	Steel	Smooth	6	00000000	00000
1/2"	Steel	Smooth	6	00000000	0000
17/32"	Steel	Smooth	6	00000000	0000
9/16"	Steel	Smooth	6	00000000	00000
19/32"	Steel	Smooth	6	00000000	00000
5/8"	Steel	Smooth	6	00000000	00000
21/32"	Steel	Smooth	6	00000000	00000
11/16"	Steel	Smooth	6	00000000	00000
23/32"	Steel	Smooth	6	00000000	00000
3/4"	Steel	Smooth	6	00000000	00000
25/32"	Steel	Smooth	6	00000000	00000
13/16"	Steel	Smooth	6	00000000	00000
27/32"	Steel	Smooth	6	00000000	00000
7/8"	Steel	Smooth	6	00000000	00000
29/32"	Steel	Smooth	6	00000000	00000
15/16"	Steel	Smooth	6	00000000	00000
31/32"	Steel	Smooth	6	00000000	00000
1"	Steel	Smooth	6	00000000	00000
Metric
3mm	Steel	Smooth	6	0000000	00000
4mm	Steel	Smooth	6	0000000	00000
5mm	Steel	Smooth	6	0000000	00000
6mm	Steel	Smooth	6	0000000	00000
7mm	Steel	Smooth	6	0000000	00000
8mm	Steel	Smooth	6	0000000	00000
9mm	Steel	Smooth	6	0000000	00000
10mm	Steel	Smooth	6	0000000	00000
11mm	Steel	Smooth	6	0000000	00000
12mm	Steel	Smooth	6	0000000	00000
13mm	Steel	Smooth	6	0000000	00000

Center-Locating Punch Sets for Unthreaded Closed-End Holes

66-Punch Set

108-Punch Set

Number of Pieces	Includes	Punch Material	Grip Texture	Container Type		Each
66	Punches with 11/16" to 1" (in 1/32nds increments) Point Dia.	Steel	Smooth	Metal Case	0000000	0000000
108	Punches with 1/8" to 21/32" (in 1/32nds increments) Point Dia.	Steel	Smooth	Metal Case	0000000	000000

Center-Locating Punches for Threaded Holes

Also known as transfer screws, these punches can be used in any threaded hole to transfer the hole location. Use the handle to screw a punch into a hole. Place your workpiece against the punch and strike it with a hammer to mark the hole location.

Inch
Thread Size	Includes	Punch Material	Grip Texture		Each
4-40	Handle, Six Punches	Steel	Smooth	0000000	000000
4-48	Handle, Six Punches	Steel	Smooth	0000000	00000
5-40	Handle, Six Punches	Steel	Smooth	0000000	00000
5-44	Handle, Six Punches	Steel	Smooth	0000000	00000
6-32	Handle, Six Punches	Steel	Smooth	0000000	00000
6-40	Handle, Six Punches	Steel	Smooth	0000000	00000
8-32	Handle, Six Punches	Steel	Smooth	0000000	00000
8-36	Handle, Six Punches	Steel	Smooth	0000000	00000
10-24	Handle, Six Punches	Steel	Smooth	0000000	00000
10-32	Handle, Six Punches	Steel	Smooth	0000000	00000
12-24	Handle, Six Punches	Steel	Smooth	0000000	00000
12-28	Handle, Six Punches	Steel	Smooth	0000000	00000
1/4"-20	Handle, Six Punches	Steel	Smooth	0000000	00000
1/4"-28	Handle, Six Punches	Steel	Smooth	0000000	00000
5/16"-18	Handle, Six Punches	Steel	Smooth	0000000	00000
5/16"-24	Handle, Six Punches	Steel	Smooth	0000000	00000
3/8"-16	Handle, Six Punches	Steel	Smooth	0000000	00000
3/8"-24	Handle, Six Punches	Steel	Smooth	0000000	00000
7/16"-14	Handle, Six Punches	Steel	Smooth	0000000	00000
7/16"-20	Handle, Six Punches	Steel	Smooth	0000000	00000
1/2"-13	Handle, Six Punches	Steel	Smooth	0000000	00000
1/2"-20	Handle, Six Punches	Steel	Smooth	0000000	00000
9/16"-12	Handle, Six Punches	Steel	Smooth	0000000	00000
9/16"-18	Handle, Six Punches	Steel	Smooth	0000000	00000
5/8"-11	Handle, Six Punches	Steel	Smooth	0000000	00000
5/8"-18	Handle, Six Punches	Steel	Smooth	0000000	00000
3/4"-10	Handle, Six Punches	Steel	Smooth	0000000	00000
3/4"-16	Handle, Six Punches	Steel	Smooth	0000000	00000
7/8"-9	Handle, Six Punches	Steel	Smooth	0000000	00000
7/8"-14	Handle, Six Punches	Steel	Smooth	0000000	00000
1"-8	Handle, Six Punches	Steel	Smooth	0000000	00000
1"-14	Handle, Six Punches	Steel	Smooth	0000000	00000
Metric
M3 × 0.5 mm	Handle, Six Punches	Steel	Smooth	0000000	00000
M4 × 0.7 mm	Handle, Six Punches	Steel	Smooth	0000000	00000
M5 × 0.8 mm	Handle, Six Punches	Steel	Smooth	0000000	00000
M6 × 1 mm	Handle, Six Punches	Steel	Smooth	0000000	00000
M8 × 1.25 mm	Handle, Six Punches	Steel	Smooth	0000000	00000
M10 × 1.5 mm	Handle, Six Punches	Steel	Smooth	0000000	00000
M12 × 1.75 mm	Handle, Six Punches	Steel	Smooth	0000000	00000
M14 × 2 mm	Handle, Six Punches	Steel	Smooth	0000000	00000
M16 × 2 mm	Handle, Six Punches	Steel	Smooth	0000000	00000
M20 × 2.5 mm	Handle, Six Punches	Steel	Smooth	0000000	00000
M24 × 3 mm	Handle, Six Punches	Steel	Smooth	0000000	00000

Center-Locating Punch Sets for Threaded Holes

Inch
Number of Pieces	Includes	Punch Material	Grip Texture	Container Type		Each
16	Handle, Four punches each in the following sizes: 1/4"-20, 5/16"-18, 3/8"-16, 7/16"-14	Steel	Smooth	Plastic Case	0000000	000000
16	Handle, Four punches each in the following sizes: 4-40, 6-32, 8-32, 10-24	Steel	Smooth	Plastic Case	0000000	00000
16	Handle, Four punches each in the following sizes: 1/2"-13, 9/16"-12, 5/8"-11, 3/4"-10	Steel	Smooth	Plastic Case	0000000	00000
Metric
16	Handle, Four punches each in the following sizes: M3, M4, M5, M6	Steel	Smooth	Plastic Case	0000000	00000
16	Handle, Four punches each in the following sizes: M14, M16, M20, M24	Steel	Smooth	Plastic Case	0000000	00000
16	Handle, Four punches each in the following sizes: M6, M8, M10, M12	Steel	Smooth	Plastic Case	0000000	00000

Self-Aligning Center-Locating Punches for Threaded Holes

Also known as transfer screws, these punches have a uniform shoulder height so you can quickly transfer multiple hole locations at once. Thread the punches into closed-end holes and tighten with pliers or a wrench, then strike the workpiece with a hammer to mark the holes.

Thread Size	Shoulder Ht.	Punch Material	Grip Texture		Each
10-24	0.02"	Steel	Smooth	0000000	00000
10-32	0.02"	Steel	Smooth	0000000	0000
1/4"-20	0.02"	Steel	Smooth	0000000	0000
1/4"-28	0.02"	Steel	Smooth	0000000	0000
5/16"-18	0.02"	Steel	Smooth	0000000	0000
5/16"-24	0.02"	Steel	Smooth	0000000	0000
3/8"-16	0.02"	Steel	Smooth	0000000	0000
3/8"-24	0.02"	Steel	Smooth	0000000	0000
7/16"-14	0.02"	Steel	Smooth	0000000	0000
7/16"-20	0.02"	Steel	Smooth	0000000	0000
1/2"-13	0.02"	Steel	Smooth	0000000	0000
1/2"-20	0.02"	Steel	Smooth	0000000	0000
5/8"-11	0.02"	Steel	Smooth	0000000	0000
3/4"-10	0.02"	Steel	Smooth	0000000	0000

Self-Aligning Center-Locating Punch Sets for Threaded Holes

Number of Pieces	Includes	Shoulder Ht.	Punch Material	Grip Texture		Each
12	Four punches each in the following sizes: 10-24, 10-32, 1/4"-20	0.02"	Steel	Smooth	0000000	000000
12	Four punches each in the following sizes: 1/4"-20, 5/16"-18, 3/8"-16	0.02"	Steel	Smooth	0000000	00000
12	Four punches each in the following sizes: 1/2"-13, 5/8"-11, 3/4"-10	0.02"	Steel	Smooth	0000000	00000
12	Four punches each in the following sizes: 7/16"-14, 1/2"-13, 5/8"-11	0.02"	Steel	Smooth	0000000	00000
12	Four punches each in the following sizes: 5/16"-18, 3/8"-16, 1/2"-13	0.02"	Steel	Smooth	0000000	00000