Sine Plates

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Angle Plates

Sine Bars

Sine Plates

System of Measurement

Inside Length

Overall Length

Height

Width

Material

Length

Overall Width

Export Control Classification Number (ECCN)

EAR99

Number of Mounting Holes

Overall Height

Squareness Tolerance

Angle Plate Tolerance Rating

Standard

Tight

DFARS Specialty Metals

Exempt

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

REACH

RoHS

Thread Size

Mounting Hole Thread Size

Mounting Holes

Slot Width

Hole Diameter

Number of Holes

Number of Slots

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70 Products

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Use with gauge blocks to tilt the plate surface to a precise angle. Measure angles on your workpiece or set up a part for precision grinding. Do not use for milling and drilling machine processes.

Overall				Mounting Holes		Tolerance
Lg.	Wd.	Ht.	Inside Lg.	No. of	Thread Size	Squareness	Parallel	Material		Each
4"	4"	2"	3"	19	1/4"-20	0.0002"	0.0002"	Steel	5216A21	0000000
6"	6"	2"	5"	25	1/4"-20	0.0002"	0.0002"	Steel	5216A24	00000000
12"	6"	2 5/8"	10"	28	3/8"-16	0.0003"	0.0003"	Steel	5216A26	00000000

Magnetic Sine Plates

Turn the handle to switch the magnet on and secure steel parts—no need for clamps or screws. Use these plates with gauge blocks to tilt the plate surface to a precise angle. Measure angles on your workpiece or set up a part for precision grinding. Do not use for milling and drilling machine processes.

Overall				Tolerance
Lg.	Wd.	Ht.	Inside Lg.	Squareness	Parallel	Material		Each
6"	6"	4 1/4"	5"	0.0002"	0.0002"	Steel	5216A31	000000000

Sine Bars


Shown with Gauge Block (Not Included)

Don’t let one bad angle spoil the bunch. Individually crafted in the U.S. with Grade 8 Steel that lasts a lifetime, these are the most accurate and durable sine bars available. Machinists use them to guarantee consistency in mass production and to create tools like dies and knives. Ideal for small workpieces such as milling cutters, they’re best for angle measurements below 45°. Sine bars need to be paired with gauge blocks (sold separately).

Overall				Tolerance
Lg.	Wd.	Ht.	Inside Lg.	Squareness	Parallel	Material		Each
6 1/2"	1"	1 5/8"	5"	0.0002"	0.0002"	Steel	3349N11	0000000
11 3/8"	1 1/8"	2"	10"	0.0002"	0.0002"	Steel	3349N12	000000

Angle Plates with Mounting Slots

Use these plates to ensure accurate right angles and hold workpieces and fixtures perpendicular to a machine table.

4 Slots

Tight Tolerance—These plates are precision ground for the most accurate alignment when inspecting and machining.

					Slot Lg.			Tolerance per 6"
	Lg.	Wd.	Ht.	Slot Wd.	(A)	(B)	Wt., lb.	Squareness	Parallel	End Squareness	End Parallel	Material		Each
Standard Tolerance



		2 1/2"	3 1/2"	3"	7/16"	7/8"	3/8"	4	0.002"	0.002"	—	—	Iron	2353A65	0000000


		3"	4 1/2"	3 1/2"	9/16"	1 1/16"	2 11/16"	4	0.002"	0.002"	—	—	Iron	2351A65	000000
		3"	4 1/2"	3 1/2"	9/16"	1 1/4"	3/4"	5	0.002"	0.002"	—	—	Iron	2353A66	000000
		4 1/2"	6"	5"	11/16"	2 1/16"	1 9/16"	13	0.002"	0.002"	—	—	Iron	2353A67	000000
		4 1/2"	7"	5 1/2"	11/16"	2 9/16"	1 9/16"	14	0.002"	0.002"	—	—	Iron	2353A68	000000
		5"	8"	6"	9/16"	3 1/16"	1 3/4"	22	0.002"	0.002"	—	—	Iron	2353A69	000000
		6"	9"	7"	11/16"	3 7/8"	2 1/16"	28	0.002"	0.002"	—	—	Iron	2353A7	000000
		6"	10"	8"	11/16"	4 1/2"	2 3/8"	37	0.002"	0.002"	—	—	Iron	2353A71	000000


		Tight Tolerance



				3"	4 1/2"	3 1/2"	9/16"	1 1/4"	3/4"	5	0.0005"	0.0005"	0.002"	0.002"	Iron	2359A66	000000


				4 1/2"	6"	5"	11/16"	2 1/16"	1 9/16"	13	0.0005"	0.0005"	0.002"	0.002"	Iron	2359A67	000000
				4 1/2"	7"	5 1/2"	11/16"	2 9/16"	1 9/16"	14	0.0005"	0.0005"	0.002"	0.002"	Iron	2359A68	000000
				5"	8"	6"	9/16"	3 1/16"	1 3/4"	22	0.0005"	0.0005"	0.002"	0.002"	Iron	2359A69	000000
				6"	9"	7"	11/16"	3 7/8"	2 1/16"	28	0.0005"	0.0005"	0.002"	0.002"	Iron	2359A7	000000
				6"	10"	8"	11/16"	4 1/2"	2 3/8"	37	0.0005"	0.0005"	0.002"	0.002"	Iron	2359A71	000000

7 Slots

					Slot Lg.			Tolerance per 6"
	Lg.	Wd.	Ht.	Slot Wd.	(A)	(B)	Wt., lb.	Squareness	Parallel	Material		Each
Standard Tolerance



		4 1/2"	6"	5"	9/16"	2"	1 1/4"	12	0.002"	0.002"	Iron	2351A66	0000000

8 Slots

					Slot Lg.			Tolerance per 6"
	Lg.	Wd.	Ht.	Slot Wd.	(A)	(B)	Wt., lb.	Squareness	Parallel	Material		Each
Standard Tolerance



		4 1/2"	7"	5 1/2"	9/16"	2 1/2"	1 3/4"	14	0.002"	0.002"	Iron	2351A67	0000000


		5"	8"	6"	9/16"	2 5/8"	2 1/16"	20	0.002"	0.002"	Iron	2351A68	000000

11 Slots

Tight Tolerance—These plates are precision ground for the most accurate alignment when inspecting and machining.

					Slot Lg.					Tolerance per 6"
	Lg.	Wd.	Ht.	Slot Wd.	(A)	(B)	(C)	(D)	Wt., lb.	Squareness	Parallel	End Squareness	End Parallel	Material		Each
Standard Tolerance



		8"	12"	9"	11/16"	1 7/16"	5 1/8"	1 7/16"	3 3/16"	63	0.002"	0.002"	—	—	Iron	2353A72	0000000


		Tight Tolerance



				8"	12"	9"	11/16"	1 7/16"	5 1/8"	1 7/16"	3 3/16"	63	0.0005"	0.0005"	0.002"	0.002"	Iron	2359A72	00000000

13 Slots

					Slot Lg.					Tolerance per 6"
	Lg.	Wd.	Ht.	Slot Wd.	(A)	(B)	(C)	(D)	Wt., lb.	Squareness	Parallel	Material		Each
Standard Tolerance



		6"	9"	7"	11/16"	15/16"	3 1/2"	1 5/8"	2 1/2"	24	0.002"	0.002"	Iron	2351A69	0000000


		6"	10"	8"	11/16"	1 3/16"	4 1/8"	1 7/8"	2 1/8"	33	0.002"	0.002"	Iron	2351A71	000000
		8"	12"	9"	13/16"	1 5/16"	4 5/8"	2 7/16"	3 5/8"	62	0.002"	0.002"	Iron	2351A72	000000

14 Slots

					Slot Lg.						Tolerance per 6"
	Lg.	Wd.	Ht.	Slot Wd.	(A)	(B)	(C)	(D)	(E)	Wt., lb.	Squareness	Parallel	Material		Each
Standard Tolerance



		9"	16"	12"	13/16"	2 17/32"	7 15/32"	4 3/4"	1 1/8"	2 17/32"	115	0.002"	0.002"	Iron	2351A11	000000000

22 Slots

					Slot Lg.							Tolerance per 6"
	Lg.	Wd.	Ht.	Slot Wd.	(A)	(B)	(C)	(D)	(E)	(F)	Wt., lb.	Squareness	Parallel	Material		Each
Standard Tolerance



		12"	20"	16"	13/16"	2 3/16"	11 5/16"	4 17/32"	6 3/4"	2 1/8"	2 17/32"	210	0.002"	0.002"	Iron	2351A12	000000000

Angle Plates with Mounting Holes


Style 1	Style 2	Style 3

Style 4	Style 5	Style 6

Mount workpieces in precisely located holes for repeatable setups. These plates ensure accurate right angles and hold workpieces and fixtures perpendicular to a machine table.

Standard Tolerance


Style 1	Style 2	Style 3

				Hole			Slot				Tolerance, mm
Style	Lg., mm	Wd., mm	Ht., mm	No. of	Dia., mm	Dp., mm	No. of	Wd., mm	Lg., mm	Wt., lb.	Squareness	Flatness	Material		Each
1	221	75	446	75	6.5	12	—	—	—	6	0.1	0.1	Aluminum	5230A42	0000000
2	221	221	446	189	7	12	12	7	81	13	0.1	0.1	Aluminum	5230A43	000000
3	150	221	300	141	7	8	4	7	87	6	0.1	0.1	Aluminum	5230A41	000000

Tight Tolerance


Style 4	Style 5	Style 6

These plates are precision ground for the most accurate alignment when inspecting and machining.

				Threaded Holes		Counterbored Holes				Tolerance per 6"
Style	Lg.	Wd.	Ht.	No. of	Thread Size	No. of	Dia.	Dp.	Wt., lb.	Squareness	Parallel	Material		Each
4	3"	3"	4"	13	1/4"-20	4	5/16"	7/16"	6	0.0002"	0.0002"	Steel	5230A62	0000000
5	4"	4"	4"	13	1/4"-20	4	5/16"	7/16"	10	0.0002"	0.0002"	Steel	5230A63	000000
6	4"	4"	6"	14	3/8"-16	4	7/16"	5/8"	14	0.0002"	0.0002"	Steel	5230A65	000000

Angle Plates

Ensure accurate right angles and hold workpieces and fixtures perpendicular to a machine table by securing them to these plates with clamps.

Standard Tolerance

Image of Product. Front orientation. Contains Annotated. Angle Plates.

				Tolerance per 6"
Lg.	Wd.	Ht.	Wt., lb.	Squareness	Parallel	Material		Each
2"	2"	2"	1	0.002"	0.002"	Iron	23525A65	000000
3"	3"	3"	3	0.002"	0.002"	Iron	23525A66	000000
4"	4"	4"	7	0.002"	0.002"	Iron	23525A67	000000
5"	5"	5"	11	0.002"	0.002"	Iron	23525A68	000000
6"	6"	6"	18	0.002"	0.002"	Iron	23525A69	000000
8"	8"	8"	42	0.002"	0.002"	Iron	23525A7	000000
12"	12"	12"	125	0.002"	0.002"	Iron	23525A71	00000000

Tight Tolerance

These plates are precision ground for the most accurate alignment when inspecting and machining.

				Tolerance per 6"
Lg.	Wd.	Ht.	Wt., lb.	Squareness	Parallel	End Squareness	End Parallel	Material		Each
2"	2"	2"	1	0.0005"	0.0005"	0.002"	0.002"	Iron	2243A65	0000000
3"	3"	3"	3	0.0005"	0.0005"	0.002"	0.002"	Iron	2243A66	000000
4"	4"	4"	7	0.0005"	0.0005"	0.002"	0.002"	Iron	2243A13	000000
5"	5"	5"	11	0.0005"	0.0005"	0.002"	0.002"	Iron	2243A68	000000
6"	6"	6"	18	0.0005"	0.0005"	0.002"	0.002"	Iron	2243A17	000000
8"	6"	10"	45	0.0005"	0.0005"	0.002"	0.002"	Iron	2243A25	000000
8"	8"	8"	42	0.0005"	0.0005"	0.002"	0.002"	Iron	2243A7	000000
8"	10"	6"	50	0.0005"	0.0005"	0.002"	0.002"	Iron	2243A22	000000

Any-Which-Way Angle Plates

The handle extends the full length and height of these plates for use on any of their six sides. Ensure accurate right angles and hold workpieces and fixtures perpendicular to a machine table by securing them to the plate with clamps.

Standard Tolerance

				Tolerance per 6"
Lg.	Wd.	Ht.	Wt., lb.	Squareness	Parallel	Material		Each
4"	3 3/4"	5"	10	0.002"	0.002"	Iron	23535A65	0000000
4"	4"	6"	12	0.002"	0.002"	Iron	23535A66	000000
5"	4"	8"	21	0.002"	0.002"	Iron	23535A68	000000
5"	4 1/2"	6"	16	0.002"	0.002"	Iron	23535A67	000000
6"	6"	8"	32	0.002"	0.002"	Iron	23535A72	000000
7"	5 1/2"	10"	37	0.002"	0.002"	Iron	23535A69	000000
8"	5"	12"	44	0.002"	0.002"	Iron	23535A71	000000
8"	5 1/2"	10"	40	0.002"	0.002"	Iron	23535A7	000000
9"	8"	16"	94	0.002"	0.002"	Iron	23535A73	000000
10"	8"	12"	86	0.002"	0.002"	Iron	23535A74	000000

Tight Tolerance

These plates are precision ground for the most accurate alignment when inspecting and machining.

				Tolerance per 6"
Lg.	Wd.	Ht.	Wt., lb.	Squareness	Parallel	Material		Each
4"	3 3/4"	5"	10	0.0005"	0.00025"	Iron	2244A65	0000000
4"	4"	6"	12	0.0005"	0.00025"	Iron	2244A66	000000
5"	4"	8"	21	0.0005"	0.00025"	Iron	2244A68	000000
5"	4 1/2"	6"	16	0.0005"	0.00025"	Iron	2244A67	000000
6"	6"	8"	32	0.0005"	0.00025"	Iron	2244A3	000000
7"	5 1/2"	10"	37	0.0005"	0.00025"	Iron	2244A69	000000
8"	5"	12"	44	0.0005"	0.00025"	Iron	2244A71	000000
9"	8"	16"	94	0.0005"	0.00025"	Iron	2244A5	00000000
10"	8"	12"	86	0.0005"	0.00025"	Iron	2244A74	00000000