1 1/8"-7 Nuts | McMaster-Carr

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

REACH Compliant

	Locking Type Locking Type


Nylon Insert	Distorted Thread

Steel Insert

	Length Length

4 3/4"

7 1/2"

	Insert Maximum Temperature Insert Maximum Temperature

220° F

	Threading Threading

	Fully Threaded
	Partially Threaded

	Coupling Nut Profile Coupling Nut Profile

Standard

Extra Long

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80 Products

About Nuts, Materials, and Finishes

Medium-Strength Steel Hex Nuts—Grade 5

These nuts are suitable for fastening most machinery and equipment.

Left-Hand Threaded Medium-Strength
Steel Hex Nuts—Grade 5

These nuts tighten when turned to the left; once fastened, they resist loosening from counterclockwise motion.

High-Strength Steel Hex Nuts—Grade 8

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

Left-Hand Threaded High-Strength Steel Hex Nuts

Tighten these nuts by turning them to the left; once fastened, they resist loosening from counterclockwise motion.

Low-Strength Steel Hex Nuts

About half the strength of medium-strength steel nuts, these nuts are for light duty fastening applications.

Left-Hand Threaded Low-Strength Steel Hex Nuts

These nuts tighten when turned to the left; once fastened, they resist loosening from counterclockwise motion.

18-8 Stainless Steel Hex Nuts

These nuts have good chemical resistance and may be mildly magnetic.

Left-Hand Threaded 18-8 Stainless Steel Hex Nuts

These nuts tighten when turned to the left; once fastened, they resist loosening from counterclockwise motion.

Super-Corrosion-Resistant 316 Stainless Steel Hex Nuts

These nuts have excellent chemical resistance and can be used in saltwater environments.

Brass Hex Nuts

These nuts are corrosion resistant in wet environments, electrically conductive, and nonmagnetic.

Bronze Hex Nuts

These nuts are resistant to salt water, electrically conductive, and nonmagnetic.

Thin Hex Nuts

Medium-Strength Steel Thin Hex Nuts

Made from Grade 5 steel, these inch-sized nuts are suitable for most fastening applications.

Left-Hand Threaded
Medium-Strength Steel Thin Hex Nuts

These nuts tighten when turned to the left; once fastened, they resist loosening from counterclockwise motion. They’re Grade 5 steel, so you can used these inch-sized nuts for most fastening applications.

Low-Strength Steel Thin Hex Nuts

These nuts should be used for light duty fastening applications, such as securing access panels.

Left-Hand Threaded Low-Strength Steel Thin Hex Nuts

These nuts tighten when turned to the left; once fastened, they resist loosening from counterclockwise motion. They’re Grade 2 steel, so they can be used for fastening panels and other light duty fastening applications

High-Strength Steel Thin Hex Nuts—Grade 8

These nuts are about 25% stronger than medium-strength steel thin hex nuts. Available in inch thread sizes.

18-8 Stainless Steel Thin Hex Nuts

These nuts have good chemical resistance and may be mildly magnetic.

Left-Hand Threaded 18-8 Stainless Steel Thin Hex Nuts

These nuts tighten when turned to the left; once fastened, they resist loosening from counterclockwise motion.

Super-Corrosion-Resistant 316
Stainless Steel Thin Hex Nuts

These nuts have excellent chemical resistance and can be used in saltwater environments.

Left-Hand Threaded Super-Corrosion-Resistant
316 Stainless Steel Thin Hex Nuts

Made of 316 stainless steel for excellent corrosion resistance—including in salt water—these nuts tighten to the left and won’t loosen from counterclockwise motion. For use in low-clearance areas, they’re half the height of standard hex nuts.

Brass Thin Hex Nuts

These nuts are corrosion resistant in wet environments, electrically conductive, and nonmagnetic.

Left-Hand Threaded Brass Thin Hex Nuts

These nuts tighten to the left and won’t loosen from counterclockwise motion.

Extra-Wide Hex Nuts

Extreme-Strength Steel Extra-Wide Hex Nuts—Grade 2H

These nuts are comparable in strength to Grade 9 bolts.

Medium-Strength Steel Extra-Wide Hex Nuts—Grade 5

Also kown as heavy hex nuts, these nuts are about 10% wider and taller than standard hex nuts to distribute load over a large area.

Low-Strength Steel Extra-Wide Hex Nuts

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

18-8 Stainless Steel Extra-Wide Hex Nuts

These nuts have good chemical resistance.

Super-Corrosion-Resistant 316
Stainless Steel Extra-Wide Hex Nuts

More corrosion resistant than 18-8 stainless steel nuts, these nuts can be used in saltwater environments.

Brass Extra-Wide Hex Nuts

Brass nuts are resistant to corrosion in wet environments and electrically conductive.

Extreme-Strength Steel Extra-Wide Hex
Nuts for Structural Applications—Grade DH

High-Strength Steel Extra-Wide Hex Nuts
for Structural Applications—Grade C

Super-Corrosion-Resistant 316 Stainless Steel
Extra-Wide Hex Nuts for High-Pressure Applications

More corrosion resistant than 18-8 stainless steel nuts, these nuts have excellent resistance to chemicals and salt water.

18-8 Stainless Steel Extra-Wide Hex
Nuts for High-Pressure Applications

These nuts have good chemical resistance.

Steel Extra-Wide Hex Nuts for
High-Pressure Applications

Able to maintain their strength in high-pressure and high temperature environments, these nuts are used with ASTM A193 bolts to fasten pressure tanks, valves, and flanges.

Extra-Wide Thin Hex Nuts

Extreme-Strength Steel Extra-Wide
Thin Hex Nuts—Grade 2H

These nuts are often used in conjunction with an extra-wide hex nut to fasten Grade 9 bolts in heavy machinery, such as earth-moving equipment.

Low-Strength Steel Extra-Wide Thin Hex Nuts

Use these nuts for light duty fastening applications, such as securing access panels.

Stainless Steel Extra-Wide Thin Hex Nuts

Stainless steel nuts have excellent corrosion resistance in most environments.

Brass Extra-Wide Thin Hex Nuts

Brass nuts are resistant to corrosion in wet environments and electrically conductive.

Locknuts

High-Strength Steel Nylon-Insert Locknuts—Grade 8

Includes inch thread sizes. These Grade 8 steel locknuts are 25% stronger than our medium-strength steel nylon-insert locknuts.

Medium-Strength Steel Nylon-Insert Locknuts—Grade 5

Made from Grade 5 steel, these inch-sized locknuts are suitable for fastening most machinery and equipment.

Low-Strength Steel Nylon-Insert Locknuts

Made from low-strength steel, these locknuts should be used for light duty fastening applications, such as securing.access panels.

18-8 Stainless Steel Nylon-Insert Locknuts

These locknuts have good chemical resistance.

Super-Corrosion-Resistant 316
Stainless Steel Nylon-Insert Locknuts

More corrosion resistant than 18-8 stainless steel locknuts, these locknuts have excellent resistance to chemicals and salt water.

Low-Strength Steel Thin Nylon-Insert Locknuts

These locknuts are about half the height of standard nylon-insert locknuts. Use them in light duty low clearance applications or jam one against a hex nut to hold it in place.

Medium-Strength Steel Thin Nylon-Insert Locknuts

Grade 5 locknuts are suitable for fastening most machinery and equipment when used in conjunction with a standard hex nut.

18-8 Stainless Steel Thin Nylon-Insert Locknuts

These locknuts have good chemical resistance and may be mildly magnetic.

High-Strength Steel Top-Lock
Distorted-Thread Locknuts

Comparable in strength to Grade 8 bolts, these locknuts are about 25% stronger than medium-strength steel locknuts.

High-Strength Steel Extra-Wide Steel-Insert
Locknuts for Extreme Vibration—Grade 8

High-strength steel locknuts are about 25% stronger than medium-strength steel locknuts.

Coupling Nuts

Low-Strength Steel Coupling Nuts

About half the strength of medium-strength steel coupling nuts, these nuts are for light duty fastening applications.

Medium-Strength Steel Coupling Nuts—Grade 5

Made from Grade 5 steel, these inch-sized coupling nuts are suitable for most applications.

18-8 Stainless Steel Coupling Nuts

These coupling nuts have good chemical resistance.

Super-Corrosion-Resistant 316
Stainless Steel Coupling Nuts

More corrosion resistant than 18-8 stainless steel coupling nuts, these nuts have excellent resistance to chemicals and salt water.

Steel Extra-Long Coupling Nuts

Known for their strength, steel coupling nuts are available with a corrosion-resistant finish.

Steel Square Nuts

Low-Strength Steel Square Nuts

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

Medium-Strength Steel Square Nuts

These Grade 5 square nuts are suitable for fastening most machinery and equipment.

Left-Hand to Right-Hand Female Hex Thread Adapters

Often called sleeve nuts, these thread adapters fasten parts with right-hand threads to parts with left-hand threads.

Eye Nuts—For Lifting

Create your own lifting eye by adding an eye nut to a stud or bolt.

About Nuts, Materials, and Finishes

Hex Nuts

Medium-Strength Steel Hex Nuts—Grade 5

Left-Hand Threaded Medium-StrengthSteel Hex Nuts—Grade 5

High-Strength Steel Hex Nuts—Grade 8

Left-Hand Threaded High-Strength Steel Hex Nuts

Low-Strength Steel Hex Nuts

Left-Hand Threaded Low-Strength Steel Hex Nuts

18-8 Stainless Steel Hex Nuts

Left-Hand Threaded 18-8 Stainless Steel Hex Nuts

Super-Corrosion-Resistant 316 Stainless Steel Hex Nuts

Brass Hex Nuts

Bronze Hex Nuts

Thin Hex Nuts

Medium-Strength Steel Thin Hex Nuts

Left-Hand ThreadedMedium-Strength Steel Thin Hex Nuts

Low-Strength Steel Thin Hex Nuts

Left-Hand Threaded Low-Strength Steel Thin Hex Nuts

High-Strength Steel Thin Hex Nuts—Grade 8

18-8 Stainless Steel Thin Hex Nuts

Left-Hand Threaded 18-8 Stainless Steel Thin Hex Nuts

Super-Corrosion-Resistant 316Stainless Steel Thin Hex Nuts

Left-Hand Threaded Super-Corrosion-Resistant316 Stainless Steel Thin Hex Nuts

Brass Thin Hex Nuts

Left-Hand Threaded Brass Thin Hex Nuts

Extra-Wide Hex Nuts

Extreme-Strength Steel Extra-Wide Hex Nuts—Grade 2H

Medium-Strength Steel Extra-Wide Hex Nuts—Grade 5

Low-Strength Steel Extra-Wide Hex Nuts

18-8 Stainless Steel Extra-Wide Hex Nuts

Super-Corrosion-Resistant 316Stainless Steel Extra-Wide Hex Nuts

Brass Extra-Wide Hex Nuts

Extreme-Strength Steel Extra-Wide HexNuts for Structural Applications—Grade DH

High-Strength Steel Extra-Wide Hex Nutsfor Structural Applications—Grade C

Super-Corrosion-Resistant 316 Stainless SteelExtra-Wide Hex Nuts for High-Pressure Applications

18-8 Stainless Steel Extra-Wide HexNuts for High-Pressure Applications

Steel Extra-Wide Hex Nuts forHigh-Pressure Applications

Extra-Wide Thin Hex Nuts

Extreme-Strength Steel Extra-WideThin Hex Nuts—Grade 2H

Low-Strength Steel Extra-Wide Thin Hex Nuts

Stainless Steel Extra-Wide Thin Hex Nuts

Brass Extra-Wide Thin Hex Nuts

Locknuts

High-Strength Steel Nylon-Insert Locknuts—Grade 8

Medium-Strength Steel Nylon-Insert Locknuts—Grade 5

Low-Strength Steel Nylon-Insert Locknuts

18-8 Stainless Steel Nylon-Insert Locknuts

Super-Corrosion-Resistant 316Stainless Steel Nylon-Insert Locknuts

Low-Strength Steel Thin Nylon-Insert Locknuts

Medium-Strength Steel Thin Nylon-Insert Locknuts

18-8 Stainless Steel Thin Nylon-Insert Locknuts

High-Strength Steel Top-LockDistorted-Thread Locknuts

High-Strength Steel Extra-Wide Steel-InsertLocknuts for Extreme Vibration—Grade 8

Coupling Nuts

Low-Strength Steel Coupling Nuts

Medium-Strength Steel Coupling Nuts—Grade 5

18-8 Stainless Steel Coupling Nuts

Super-Corrosion-Resistant 316Stainless Steel Coupling Nuts

Steel Extra-Long Coupling Nuts

Steel Square Nuts

Low-Strength Steel Square Nuts

Medium-Strength Steel Square Nuts

Left-Hand to Right-Hand Female Hex Thread Adapters

Left-Hand to Right-Hand Female Hex Thread Adapters

Eye Nuts—For Lifting

Eye Nuts—For Lifting

Left-Hand Threaded Medium-Strength
Steel Hex Nuts—Grade 5

Left-Hand Threaded
Medium-Strength Steel Thin Hex Nuts

Super-Corrosion-Resistant 316
Stainless Steel Thin Hex Nuts

Left-Hand Threaded Super-Corrosion-Resistant
316 Stainless Steel Thin Hex Nuts

Super-Corrosion-Resistant 316
Stainless Steel Extra-Wide Hex Nuts

Extreme-Strength Steel Extra-Wide Hex
Nuts for Structural Applications—Grade DH

High-Strength Steel Extra-Wide Hex Nuts
for Structural Applications—Grade C

Super-Corrosion-Resistant 316 Stainless Steel
Extra-Wide Hex Nuts for High-Pressure Applications

18-8 Stainless Steel Extra-Wide Hex
Nuts for High-Pressure Applications

Steel Extra-Wide Hex Nuts for
High-Pressure Applications

Extreme-Strength Steel Extra-Wide
Thin Hex Nuts—Grade 2H

Super-Corrosion-Resistant 316
Stainless Steel Nylon-Insert Locknuts

High-Strength Steel Top-Lock
Distorted-Thread Locknuts

High-Strength Steel Extra-Wide Steel-Insert
Locknuts for Extreme Vibration—Grade 8

Super-Corrosion-Resistant 316
Stainless Steel Coupling Nuts