1 3/4"-12 Nuts | McMaster-Carr

To select the best shock absorber for your application, you need to find the energy capacity your application requires. Use this formula to calculate the energy capacity required to stop a horizontal-moving load. For example, if you have a 250-lb. load moving at 25 inches per second, your calculation is (250 lbs. ÷ 772) × 25² = 202.4 in.-lbs. energy capacity.

Note: Choose a shock absorber with a higher energy capacity than you calculated. Factors such as driving force or an inclined surface will increase the energy capacity required.

Energy Capacity (in.-lbs.) = (Weight, lbs./772) × Velocity² (in. per second)

Medium-Strength Steel Hex Nuts—Grade 5

These nuts are suitable for fastening most machinery and equipment.

For technical drawings and 3-D models, click on a part number.

Steel—Grade 5
Thread Size	Wd.	Ht.	Specifications Met	Pkg. Qty.		Pkg.
1 3/4"-12	2 5/8"	1 1/2"	ASME B18.2.2	1	000000000	000000

High-Strength Steel Hex Nuts—Grade 8

These nuts are about 25% stronger than medium-strength steel nuts.

Zinc yellow-chromate plated steel nuts resist corrosion in wet environments.

Black-Oxide steel nuts have a dark surface color and are mildly corrosion resistant in dry environments.

For technical drawings and 3-D models, click on a part number.

Zinc Yellow-Chromate Plated Steel—Grade 8
Thread Size	Wd.	Ht.	Pkg. Qty.		Pkg.
1 3/4"-12	2 5/8"	1 1/2"	1	000000000	000000
Black-Oxide Steel—Grade 8
1 3/4"-12	2 5/8"	1 1/2"	1	000000000	00000
Steel—Grade 8
1 3/4"-12	2 5/8"	1 1/2"	1	000000000	00000

Low-Strength Steel Hex Nuts

About half the strength of medium-strength steel nuts, these nuts are for light duty fastening applications, such as securing access panels.

For technical drawings and 3-D models, click on a part number.

Steel—Grade 2
Thread Size	Wd.	Ht.	Specifications Met	Pkg. Qty.		Pkg.
1 3/4"-12	2 5/8"	1 1/2"	ASTM A307	1	000000000	00000

High-Strength Steel Thin Hex Nuts—Grade 8

Also known as jam nuts, these are about half the height of standard hex nuts. Use in low-clearance applications or jam one against a standard hex nut to hold it in place. They're about 25% stronger than medium-strength steel thin hex nuts.

Zinc yellow-chromate plated steel nuts are corrosion resistant in wet environments.

For technical drawings and 3-D models, click on a part number.

Steel—Grade 8
Thread Size	Wd.	Ht.	Specifications Met	Pkg. Qty.		Pkg.
1 3/4"-12	2 5/8"	31/32"	ASME B18.2.2	1	000000000	000000
Zinc Yellow-Chromate Plated Steel—Grade 8
1 3/4"-12	2 5/8"	31/32"	ASME B18.2.2	1	000000000	00000

Low-Strength Steel Thin Hex Nuts

Also known as jam nuts, these are about half the height of standard hex nuts. Use them in low-clearance applications or jam one against another nut to hold it in place. About half the strength of medium-strength steel thin nuts, use them for light duty fastening applications, such as securing access panels.

For technical drawings and 3-D models, click on a part number.

Steel—Grade 2
Thread Size	Wd.	Ht.	Pkg. Qty.		Pkg.
1 3/4"-12	2 5/8"	31/32"	1	000000000	00000

High-Strength Steel Nylon-Insert Locknuts—Grade 8

Steel

Black-Oxide Steel

Zinc Yellow-Chromate Plated Steel

A nylon insert grips the bolt to resist loosening without damaging threads. These nuts are reusable, but their holding power lessens with each use. Made from Grade 8 steel, they're about 25% stronger than medium-strength steel locknuts.

Steel locknuts without a finish are ready to be painted or finished.

Black-oxide steel locknuts have a dark surface color and are mildly corrosion resistant in dry environments.

Zinc yellow-chromate plated steel locknuts resist corrosion in wet environments.

For technical drawings and 3-D models, click on a part number.

Steel—Grade 8
Thread Size	Wd.	Ht.	Insert Max. Temp., °F	Pkg. Qty.		Pkg.
1 3/4"-12	2 49/64"	2 5/16"	220°	1	000000000	000000
Black-Oxide Steel—Grade 8
1 3/4"-12	2 49/64"	2 5/16"	220°	1	000000000	00000
Zinc Yellow-Chromate Plated Steel—Grade 8
1 3/4"-12	2 49/64"	2 5/16"	220°	1	000000000	00000

High-Strength Steel Extra-Wide
Thin Nylon-Insert Locknuts

About half the height and 10% wider than standard nylon-insert locknuts, use these in low-clearance applications or jam one against an extra-wide hex nut to hold it in place. The nylon insert grips the bolt to resist loosening without damaging threads. They're reusable, but their holding power lessens with each use. Comparable in strength to Grade 8 bolts, these locknuts are about three times stronger than low-strength steel extra-wide thin locknuts.

Black-phosphate steel locknuts resist corrosion in wet environments.

For technical drawings and 3-D models, click on a part number.

Black-Phosphate Steel—Grade C
Thread Size	Wd.	Ht.	Insert Max. Temp., °F		Each
1 3/4"-12	2 3/4"	1 15/32"	250°	000000000	000000

Low-Strength Steel Locknuts for use with Cotter Pins

Secure these hex slotted nuts by inserting a cotter pin or safety wire through the slots and a drilled hole in your bolt for mild loosening resistance. They’re not recommended for use on parts exposed to high vibration because the pin is prone to shearing under prolonged stress. Height includes the slots. Cotter pins are not included. A zinc plating provides corrosion resistance in wet environments.

For technical drawings and 3-D models, click on a part number.

Zinc-Plated Steel
Thread Size	Wd.	Ht.	For Cotter Pin Dia.	Min. Slot Wd.	Min. Slot Dp.	Pkg. Qty.		Pkg.
1 3/4"-12	2 5/8"	1 1/2"	3/8"	0.43"	0.44"	1	000000000	000000

Steel-Insert Locknuts for Extreme Vibration—Grade 5

When installed, the steel insert grips the threads and lifts away from the nut body, isolating the insert from the nut’s load to resist spinoff caused by vibration. These locknuts are often used in shakers and vibrating equipment. The strength of the bolt should match the strength of the nut to prevent damaging threads. Made from Grade 5 steel, they're suitable for fastening most machinery and equipment.

For technical drawings and 3-D models, click on a part number.