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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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About Leveling Mounts
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About Vibration-Damping Mounts
More
How to Install Key-Locking Inserts
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How to Install Helical Inserts
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About Helical Insert Length
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18-8 Stainless Steel Key-Locking Inserts

Made of stainless steel, these inserts have good corrosion resistance. Drive the keys into the surrounding material for a more secure hold than thread-locking inserts. Use them to repair or change threads in soft metals such as aluminum. Inserts may be mildly magnetic. They’re comparable to Keensert® inserts. Installation requires a drill bit, a standard tap, an installation tool, and a hammer.
Choose inserts with a thick wall for greater strength than thin-wall inserts, or to fill a large hole.
For technical drawings and 3-D models, click on a part number.
Black-Phosphate Steel Key-Locking Inserts

A black-phosphate finish provides mild corrosion resistance. Drive the keys into the surrounding material for a more secure hold than thread-locking inserts. Use them to repair or change threads in soft metals such as aluminum. They’re comparable to Keensert® inserts. Installation requires a drill bit, a standard tap, an installation tool, and a hammer.
Choose inserts with a thick wall for greater strength than thin-wall inserts, or to fill a large hole with stripped threads.
For technical drawings and 3-D models, click on a part number.
Inserts | |||||||||||||
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For Tap | Each | Installation Tools | |||||||||||
Thread Size | Thread Pitch, mm | Thread Spacing | Thread Size | Thread Pitch, mm | Installed Lg. | Drill Bit Size | For Max. Hole Dia. | No. of Locking Keys | 1-9 | 10-Up | Each | ||
Black-Phosphate Steel with Thick Wall | |||||||||||||
M24 | 3 | Coarse | M33 | 2 | 33mm | 31 mm | 31mm | 4 | 000000000 | 000000 | 000000 | 000000000 | 000000 |
M24 | 2 | Fine | M33 | 2 | 33mm | 31 mm | 31mm | 4 | 000000000 | 00000 | 00000 | 000000000 | 00000 |
Screw-Locking Key-Locking Inserts

Forming the strongest hold of any of our threaded inserts, these inserts have a distorted internal thread to lock screws into place and keys that drive into surrounding material to prevent slipping and rotating. This creates a mechanical lock, which is stronger than the chemical lock from adhesive on thread-locking inserts. Because they’re made of a solid piece of metal, these inserts are also stronger than helical inserts, which are made of coiled wire. They're often used in molds, tools and dies, and suspension systems in vehicles to create completely new threads, add strong threads in soft metal, or replace existing threads that are damaged or need to be resized.
A dry-film lubricant makes it easy to install them and screw fasteners in. To install, use a tap to create the threads in your material and an installation tool to drive the keys into the material. All are made to tight tolerances with strictly controlled materials. Many inch sizes also meet military or aerospace standards for dimensions and material.
These inserts resist corrosion in wet environments. Cadmium-plated steel inserts are stronger than stainless steel inserts.
Inserts with thick walls are most commonly used; they’re stronger than thin-wall inserts and are used in larger holes.
For technical drawings and 3-D models, click on a part number.
Key-Locking Inserts with Installation Tool

Drive the keys into the surrounding material for a more secure hold than thread-locking inserts. These inserts are used to repair or convert threads in soft metals such as aluminum. They’re comparable to Keensert® inserts.
18-8 stainless steel inserts are more corrosion resistant than black-phosphate steel. They may be mildly magnetic.
Black-phosphate steel inserts are mildly corrosion resistant.
Choose inserts with a thick wall for greater strength than thin-wall inserts, or to fill a large hole.
For technical drawings and 3-D models, click on a part number.
For Tap | |||||||||||
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Thread Size | Thread Pitch, mm | Thread Spacing | Thread Size | Thread Pitch, mm | Installed Lg. | Drill Bit Size | For Max. Hole Dia. | No. of Locking Keys | No. of Inserts Included | Each | |
18-8 Stainless Steel with Thick Wall | |||||||||||
M24 | 3 | Coarse | M33 | 2 | 33mm | 31 mm | 31mm | 4 | 2 | 000000000 | 0000000 |
M24 | 2 | Fine | M33 | 2 | 33mm | 31 mm | 31mm | 4 | 2 | 000000000 | 000000 |
Black-Phosphate Steel with Thick Wall | |||||||||||
M24 | 3 | Coarse | M33 | 2 | 33mm | 31 mm | 31mm | 4 | 2 | 000000000 | 000000 |
M24 | 2 | Fine | M33 | 2 | 33mm | 31 mm | 31mm | 4 | 2 | 000000000 | 000000 |
Stainless Steel Helical Inserts

Also known as Heli-Coil inserts, these inserts have coils that expand once installed to securely anchor the insert. All have a prong for ease of installation. An installation tool grips the prong and reduces the coil diameter, enabling the insert to fit in tapped holes. Remove the prong to insert the screw. Installation requires a drill bit, a helical insert tap, an installation tool, and a prong break-off tool.
For technical drawings and 3-D models, click on a part number.
Inserts | Through-Hole Taps | Closed-End Hole Taps | Installation Tools | ||||||||||||
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Thread Size | Thread Pitch, mm | Thread Spacing | Installed Lg., mm | Drill Bit Size | For Max. Hole Dia. | Specifications Met | Pkg. Qty. | Pkg. | Each | Each | Each | ||||
18-8 Stainless Steel—Right-Hand Threaded | |||||||||||||||
M24 | 3 | Coarse | 36 | 31/32" | 31/32" | SAE MA3279-179 | 1 | 000000000 | 00000 | 000000000 | 0000000 | 000000000 | 0000000 | 000000000 | 000000 |
Stainless Steel Screw-Locking Helical Inserts

A distorted thread grips the screw to resist loosening. Also known as Heli-Coil inserts, these inserts have coils that expand once installed to securely anchor the insert. All have a prong for ease of installation. An installation tool grips the prong and reduces the coil diameter, enabling the insert to fit in tapped holes. Remove the prong to insert the screw. Installation requires a drill bit, a helical insert tap, an installation tool, and a prong break-off tool.
Inserts that meet DIN 8140 adhere to international standards for dimensions.
For technical drawings and 3-D models, click on a part number.
Inserts | Through-Hole Taps | Closed-End Hole Taps | Installation Tools | ||||||||||||
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Thread Size | Thread Pitch, mm | Thread Spacing | Installed Lg., mm | Drill Bit Size | For Max. Hole Dia. | Specifications Met | Pkg. Qty. | Pkg. | Each | Each | Each | ||||
18-8 Stainless Steel | |||||||||||||||
M24 | 3 | Coarse | 36 | 31/32" | 31/32" | DIN 8140, SAE MA3329-179 | 1 | 000000000 | 00000 | 000000000 | 0000000 | 000000000 | 0000000 | 000000000 | 000000 |
Helical Inserts with Installation Tools

Inserts come with a through-hole tap and installation tool. Also known as Heli-Coil inserts, they have coils that expand once installed to securely anchor the insert. All have a prong for ease of installation. An installation tool grips the prong and reduces the coil diameter, enabling the insert to fit in tapped holes. Remove the prong to insert the screw.
Thread Size | Thread Pitch, mm | Thread Spacing | Installed Lg., mm | Drill Bit Size | For Max. Hole Dia. | No. of Inserts Included | Includes | Each | |
18-8 Stainless Steel—Right-Hand Threaded | |||||||||
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M24 | 3 | Coarse | 36 | 31/32" | 31/32" | 5 | Through-Hole Tap, Installation Tool | 000000000 | 0000000 |
Black-Phosphate Steel Easy-to-Install Thread-Locking Inserts
A black-phosphate finish provides mild corrosion resistance. Also known as E-Z Lok, these inserts use Loctite® adhesive to keep them in place. The adhesive reaches full strength after 72 hours. Installation requires a drill bit and a standard tap. Then set the insert with a bolt and two nuts, or use an installation bit.
Choose inserts with a thick wall for greater strength than thin-wall inserts, or to fill a large hole.
To drive slotted inserts, you can use a slotted screwdriver instead of using an installation bit or a bolt and two nuts.
For technical drawings and 3-D models, click on a part number.
Thread-In Receptacles for Quick-Release Pins


Use a screwdriver to install these receptacles in a threaded hole. Use them to secure quick-release pins when you can't drill a through hole. They're made of 18-8 stainless steel for a balance of strength and corrosion resistance, and passivated for added protection against corrosion and oxidation.
For technical drawings and 3-D models, click on a part number.
For Pin Dia. | Barrel OD | Overall Lg. | Usable Lg. Reduction | Thread Size | Thread Pitch | Material | Each | |
Metric | ||||||||
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16mm | 24mm | 24mm | 6mm | M24 | 2mm | 18-8 Stainless Steel | 000000000 | 000000 |
Installation Bits for Slotted-Drive Inserts

For fast installation, use these installation bits with power drills and drill presses.
For technical drawings and 3-D models, click on a part number.
For Thread Size | Hex Shank Size | Each | |
M20, M24 | 3/8" | 000000000 | 000000 |
Installation Tools for Key-Locking Inserts

Place the tip of these tools into an insert and strike them with a hammer to drive the keys into the material. They’re compatible with Keensert® inserts.
For technical drawings and 3-D models, click on a part number.
For Thread Size | For Tap Thread Size | Each | |
For Thick-Wall Inserts | |||
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M24 | M33 | 000000000 | 000000 |
Heavy Duty Installation Tools for Key-Locking Inserts

Install Keensert®-style inserts.
Tools that feature a spring have a knurled grip on that lets you screw inserts into tapped holes, reducing hand fatigue if you’re installing many of them. To fit over inserts evenly, tools have an inner plug and outer ring that align with keys. Strike tools with a hammer to drive keys. The spring along the shaft returns the striking end to its original position to generate more force.
Choose tools that match your insert’s thread size and tap thread size.
For technical drawings and 3-D models, click on a part number.
For Thread Size | For Tap Thread Size | Features | Each | |
For Thick-Wall Inserts | ||||
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M24 | M33 | Spring | 000000000 | 000000 |
Installation Tools for Helical Inserts

Screw an insert onto these tools and drive them a quarter to half-turn below the material’s surface. They’re compatible with helical inserts that have a prong.
For technical drawings and 3-D models, click on a part number.

For Thread | ||||
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Size | Pitch, mm | Style | Each | |
For Right-Hand Thread | ||||
M24 | 3 | K | 000000000 | 000000 |
Extraction Tools for Helical Inserts

Place the tip of these tools into an insert and strike a light blow to the tool’s head. Then turn the tools counterclockwise with pressure to extract the insert.
For Thread Size | Each | |
7/16"-14, 7/16"-20, 1/2"-13, 1/2"-20, 1/2"-28, 9/16"-12, 9/16"-18, 5/8"-11, 5/8"-18, 5/8"-24, 3/4"-10, 3/4"-16, 3/4"-20, 7/8"-9, 7/8"-14, 7/8"-20, 1"-8, 1"-12, 1"-14, M12, M14, M16, M18, M20, M22, M24 | 000000000 | 000000 |
Threaded Round Plugs for Straight-Thread Pipe
Seal tube and hose fittings to keep their straight threads protected from contaminants during fabrication and storage.
Nylon plugs resist chemicals better than aluminum plugs and are more wear resistant than polyethylene plugs. You can install them manually or with a hex-head wrench or socket.
For technical drawings and 3-D models, click on a part number.

Thread | ||||||||
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Size | Pitch, mm | Ht., mm | Max. Temp., °F | Hardness | Color | Pkg. Qty. | Pkg. | |
M24 | 1.5 | 12 | 150° | Durometer 55D | Yellow | 25 | 0000000 | 000000 |
Nickel-Plated Steel Swivel Leveling Mounts with Threaded Stud



Nickel-plated steel has some corrosion resistance. Mounts have a ball-and-socket design that swivels to compensate for uneven floors. In addition to leveling, mounts raise equipment off the floor for easier cleaning and inspection.
Mounts with a cushion are nonskid for an extra measure of stability.
For technical drawings and 3-D models, click on a part number.
Thread Size | Thread Lg. | Capacity per Mount, lbs. | Base Dia. | Overall Ht. | Temperature Range, °F | Each | |
Nickel-Plated Steel | |||||||
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M24 | 89mm | 19,500 | 102mm | 137mm | -20° to 170° | 00000000 | 000000 |
M24 | 108mm | 19,500 | 102mm | 156mm | -20° to 170° | 00000000 | 00000 |
Nickel-Plated Steel with Rubber Cushion | |||||||
M24 | 89mm | 14,500 | 102mm | 140mm | -20° to 170° | 00000000 | 00000 |
M24 | 108mm | 14,500 | 102mm | 159mm | -20° to 170° | 00000000 | 00000 |
Metric Yellow Zinc-Plated Steel Swivel Leveling Mounts with Threaded Stud



Yellow zinc-plated steel is more corrosion resistant than nickel-plated steel. Mounts have a ball-and-socket design that swivels to compensate for uneven floors. In addition to leveling, mounts raise equipment off the floor for easier cleaning and inspection.
Mounts with a cushion are nonskid for an extra measure of stability.
For technical drawings and 3-D models, click on a part number.
Thread Size | Thread Pitch, mm | Thread Lg., mm | Capacity per Mount, lbs. | Base Dia., mm | Overall Ht., mm | Hex Nut Wd., mm | Temperature Range, °F | Each | |
Yellow Zinc-Plated Steel | |||||||||
---|---|---|---|---|---|---|---|---|---|
M24 | 3 | 89 | 19,840 | 102 | 137 | 35 | -20° to 170° | 0000000 | 000000 |
M24 | 3 | 108 | 19,840 | 102 | 156 | 35 | -20° to 170° | 0000000 | 00000 |
Yellow Zinc-Plated Steel with Rubber Cushion | |||||||||
M24 | 3 | 89 | 14,990 | 102 | 140 | 35 | -20° to 170° | 0000000 | 00000 |
M24 | 3 | 108 | 14,990 | 102 | 159 | 35 | -20° to 170° | 0000000 | 00000 |
Metric Corrosion-Resistant Swivel Leveling Mounts with Threaded Stud


Made entirely of stainless steel, these mounts resist corrosion from water and most chemicals. Their ball-and-socket design swivels to compensate for uneven floors. In addition to leveling, mounts raise equipment off the floor for easier cleaning and inspection.
Mounts with a cushion are nonskid for an extra measure of stability.
For technical drawings and 3-D models, click on a part number.
Thread Size | Thread Pitch, mm | Thread Lg., mm | Capacity per Mount, lbs. | Base Dia., mm | Overall Ht., mm | Hex Nut Wd., mm | Each | |
303 Stainless Steel | ||||||||
---|---|---|---|---|---|---|---|---|
M24 | 3 | 89 | 19,800 | 102 | 137 | 35 | 0000000 | 000000 |
M24 | 3 | 108 | 19,800 | 102 | 156 | 35 | 0000000 | 000000 |
303 Stainless Steel with Rubber Cushion | ||||||||
M24 | 3 | 89 | 14,900 | 102 | 140 | 35 | 00000000 | 000000 |
M24 | 3 | 108 | 14,900 | 102 | 159 | 35 | 00000000 | 000000 |
Metric Super-Corrosion-Resistant Swivel Leveling Mounts with Threaded Stud


Made entirely of 316 stainless steel, these mounts have superior corrosion resistance. Their ball-and-socket design swivels to compensate for uneven floors. In addition to leveling, mounts raise equipment off the floor for easier cleaning and inspection.
For technical drawings and 3-D models, click on a part number.
Thread Size | Thread Pitch, mm | Thread Lg., mm | Capacity per Mount, lbs. | Base Dia., mm | Overall Ht., mm | Hex Nut Wd., mm | Each | |
316 Stainless Steel | ||||||||
---|---|---|---|---|---|---|---|---|
M24 | 3 | 89 | 19,800 | 102 | 137 | 35 | 0000000 | 0000000 |
Metric Bolt-Down Swivel Leveling Mounts with Threaded Stud


Punch-out holes in the base let you bolt down these mounts to keep your equipment stationary. Their ball-and-socket design swivels to compensate for uneven floors. In addition to leveling, mounts raise equipment off the floor for easier cleaning and inspection.
Mounts with a cushion are nonskid for an extra measure of stability.
For technical drawings and 3-D models, click on a part number.
Mounting Holes | |||||||||||||
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Thread Size | Thread Pitch, mm | Thread Lg., mm | Capacity per Mount, lbs. | Base Dia., mm | Overall Ht., mm | Hex Nut Wd., mm | Temperature Range, °F | Mounting Fasteners Included | No. of | Dia., mm | Ctr.-to-Ctr. Lg., mm | Each | |
Plastic with Zinc-Plated Steel Stud | |||||||||||||
M24 | 3 | 152 | 7,500 | 102 | 185 | 35 | -20° to 170° | No | 2 | 11.9 | 68.8 | 0000000 | 000000 |
M24 | 3 | 152 | 10,000 | 127 | 210 | 35 | -20° to 170° | No | 2 | 12 | 98 | 0000000 | 00000 |
Plastic with Rubber Cushion and Zinc-Plated Steel Stud | |||||||||||||
M24 | 3 | 152 | 7,500 | 102 | 186.6 | 35 | -20° to 170° | No | 2 | 11.9 | 68.8 | 0000000 | 00000 |
M24 | 3 | 152 | 10,000 | 127 | 211.6 | 35 | -20° to 170° | No | 2 | 12 | 98 | 00000000 | 00000 |
Metric Yellow Zinc-Plated Steel Swivel Leveling Mounts with Threaded Hole



Yellow zinc-plated steel is more corrosion resistant than nickel-plated steel. Mounts have a ball-and-socket design that swivels to compensate for uneven floors. Add your own threaded stud or bolt to build a mount that fits your needs. In addition to leveling, mounts raise equipment off the floor for easier cleaning and inspection.
Mounts with a cushion are nonskid for an extra measure of stability.
For technical drawings and 3-D models, click on a part number.
Metric Corrosion-Resistant Swivel Leveling Mounts with Threaded Hole


Made of stainless steel, these mounts resist corrosion from water and most chemicals. Their ball-and-socket design swivels to compensate for uneven floors. Add your own threaded stud or bolt to build a mount that fits your needs. In addition to leveling, mounts raise equipment off the floor for easier cleaning and inspection.
For technical drawings and 3-D models, click on a part number.
Thread Size | Thread Pitch, mm | Thread Dp., mm | Capacity per Mount, lbs. | Base Dia., mm | Overall Ht., mm | Hex Nut Wd., mm | Temperature Range, °F | Each | |
303 Stainless Steel | |||||||||
---|---|---|---|---|---|---|---|---|---|
M24 | 3 | 17.5 | 19,800 | 102 | 48 | 35 | -20° to 170° | 0000000 | 000000 |
Extreme-Force Swivel Vibration-Damping Leveling Mounts with Threaded Stud
Higher deflection ratings translate to greater vibration and shock isolation. These mounts have a rubber base that grips the floor for stability and is resistant to oil and grease. Their ball-and-socket design swivels to compensate for uneven floors. In addition to leveling, mounts raise equipment off the floor for easier cleaning and inspection.
For technical drawings and 3-D models, click on a part number.


Thread Size | Thread Pitch, mm | Thread Lg. | Capacity per Mount, lbs. | Deflection @ Capacity | Swivel Range of Motion | Base Dia. | Base Ht. | Overall Ht. | Hardness | Hardness Rating | Temp. Range, °F | Each | |
Rubber with Zinc-Plated Steel Stud | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
M24 | 3 | 4 5/16" | 3,700 | 0.13" | 7.5° | 5" | 1 1/2" | 6" | Durometer 50A | Medium | -20° to 180° | 00000000 | 000000 |
M24 | 3 | 4 5/16" | 8,000 | 0.13" | 7.5° | 5" | 1 1/2" | 6" | Durometer 70A | Hard | -20° to 180° | 00000000 | 00000 |
Corrosion-Resistant Swivel Vibration-Damping Leveling Mounts with Threaded Stud


All-stainless steel construction stands up to water and chemicals and won't rust or corrode. Use these mounts to minimize vibration and noise to prolong machine life and protect floors. Their ball-and-socket design swivels to compensate for uneven floors. In addition to leveling, mounts raise equipment off the floor for easier cleaning and inspection.
For technical drawings and 3-D models, click on a part number.
Thread Size | Thread Pitch, mm | Thread Lg. | Capacity per Mount, lbs. | Deflection @ Capacity | Base Dia. | Overall Ht. | Temperature Range, °F | Each | |
304 Stainless Steel with Rubber Cushion | |||||||||
---|---|---|---|---|---|---|---|---|---|
M24 | 3 | 4 3/4" | 3,000 | 0.17" | 5 1/2" | 7" | -20° to 190° | 00000000 | 0000000 |
M24 | 3 | 5 15/16" | 2,000 | 0.12" | 3 7/8" | 7 5/8" | -20° to 190° | 00000000 | 000000 |
M24 | 3 | 5 15/16" | 4,000 | 0.17" | 5 1/2" | 8 1/8" | -20° to 190° | 00000000 | 000000 |
T-Slot Nuts

Designed to slide into T-slot tracks on machine tool tables, use these nuts to secure clamps and workpieces.
Fully threaded nuts allow a stud to extend beyond the bottom of the nut. Partially threaded nuts keep studs from traveling past the bottom of the nut and damaging your table.
For technical drawings and 3-D models, click on a part number.