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DFARS Specialty Metals
Mil. Spec. Rivet-Mount Nuts
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Create threads in hard-to-work areas—where you can’t reach the back of a workpiece, or material is too thin to be tapped. For a strong grip, these rivet-mount nuts have distorted threads that increase friction with bolts. Because they mount with two rivets, they won’t spin when you’re tightening screws. However, these nuts do move inside their retainers, which lets you install bolts at a slight angle; use them to align with off-center parts. All meet military guidelines for dimensions and material.
A286 Stainless Steel—A286 stainless steel nuts are corrosion resistant.
Cadmium-Plated Carbon Steel and Cadmium-Plated Steel—Cadmium-plated nuts resist corrosion in industrial and saltwater environments, although will lose their corrosion resistance over 450° F. The cadmium plating also adds lubricity, making these nuts easy to install.
Silver-Plated A286 Stainless Steel—Silver-plated stainless steel nuts withstand temperatures up to 800° F. The silver plating also adds lubricity and prevents seizing caused by friction between nuts and bolts.
Lubricated—Lubricated nuts thread onto bolts smoothly.
Base | Barrel | Mounting | |||||||||||
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Thread Size | Lg. | Wd. | Thk. | Dia. | Ht. | No. of Holes | Hole Dia. | Hole Ctr.-to-Ctr. | Mil. Spec. | Each | |||
Steel—Unlubricated | |||||||||||||
| 4-40 | 21/32" | 5/16" | 3/32" | 1/8" | 1/16" | 2 | 0.098" | 13/32" | MS21075-04N | 90857A126 | 00000 | ||
Cadmium-Plated Steel—Lubricated | |||||||||||||
| 4-40 | 21/32" | 5/16" | 3/32" | 1/8" | 1/16" | 2 | 0.098" | 13/32" | MS21075L04N | 90857A131 | 0000 | ||
Cadmium-Plated Carbon Steel—Lubricated | |||||||||||||
| 4-40 | 61/64" | 13/32" | 1/32" | 0.141" | 9/64" | 2 | 0.098" | 11/16" | MS21059L04 | 90857A106 | 0000 | ||
A286 Stainless Steel—Lubricated | |||||||||||||
| 4-40 | 21/32" | 5/16" | 3/32" | 1/8" | 1/16" | 2 | 0.098" | 13/32" | MS21076L04N | 90857A141 | 00000 | ||
Silver-Plated A286 Stainless Steel—Unlubricated | |||||||||||||
| 4-40 | 21/32" | 5/16" | 3/32" | 1/8" | 1/16" | 2 | 0.098" | 13/32" | MS21076-04N | 90857A136 | 00000 | ||
Hand-Driven Rivet Nut Tools for Low-Profile Nuts
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Turn these tools by hand to install low-profile rivet nuts. The required mandrels are sold separately. To use, thread the nut onto a mandrel of the same size, then place it into a hole, push down on the tool's T-handle, and turn clockwise.
For Thread Size | For Rivet Nut Body Shape | For Rivet Nut Material | Overall Lg. | Each | |||
|---|---|---|---|---|---|---|---|
| 4-40 6-32 8-32 10-24 10-32 12-24 1/4"-20 1/4"-28 5/16"-18 5/16"-24 3/8"-16 3/8"-24 M3 × 0. 5 mm M4 × 0.7 mm M5 × 0.8 mm M6 × 1 mm M8 × 1.25 mm M10 × 1.5 mm | Sleeve | 18-8 Stainless Steel Aluminum Steel | 5 7/8" | 98590A100 | 000000 | ||
Rivet Nuts
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Add threads to sheet metal and other thin surfaces inaccessible from behind. When installed, the body of these nuts collapses onto the back side of material to form a flange that holds the nut in place. Less expensive than press-fit nuts, they also avoid the spatter mess of weld nuts. They're often used in control box panels and electronic housings, as well as for quick repairs to assembled parts.
Install these nuts in a drilled or punched round hole using a rivet nut tool. Thread the rivet nut onto the mandrel, then grip the tool body with a wrench as you twist the tightening nut with a ratchet. Choose an air- or battery-powered tool for fast installation or to easily switch between many different nut sizes. Length is measured from under the flange.
Zinc-Plated Steel—A step up from plain steel, the plating withstands occasional exposure to moisture.
Tight-Space Rivet Nuts
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Add threads to sheet metal and panels in confined spaces with limited backside clearance. At installation, these compact nuts collapse into themselves and press slightly outward, creating snug-fitting threads half the length of a standard nut but just as strong. With a thin top flange that creates a near-flush fit, they're ideal for light duty fastening in small enclosures or housings.
Install these nuts using a hand- or power-driven rivet nut tool. In thick material, drill or punch a slightly larger hole to ensure the nut body expands uniformly.
Tin Zinc-Plated Steel—Twice as strong as aluminum rivet nuts. The plating resists rust and helps the nut collapse without friction during installation. It's also nontoxic, unlike cadmium plating.
Tin Zinc-Plated Aluminum—The plating resists rust and helps the nut collapse without friction during installation. It's also nontoxic, unlike cadmium plating.
Tin-Plated 18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust and mild chemicals. The tin plating helps the nut collapse without friction during installation.
Rivet Nuts | Hand-Driven Tools | Mandrels | ||||||||||||||
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Flange | ||||||||||||||||
Thread Size | Drill Bit Size | For Material Thk. | Body Dia. | Lg. | Installed Lg. | Dia. | Thk. | Pkg. Qty. | Pkg. | Each | Each | |||||
Tin Zinc-Plated Steel | ||||||||||||||||
| 4-40 | 3/16" | 0.030" to 0.090" | 0.187" | 0.37" | 0.205" | 0.211" | 0.015" | 25 | 98560A527 | 000000 | 98590A100 | 000000 | 98590A210 | 000000 | ||
Tin Zinc-Plated Aluminum | ||||||||||||||||
| 4-40 | 3/16" | 0.030" to 0.090" | 0.187" | 0.355" | 0.145" | 0.211" | 0.015" | 10 | 98560A639 | 00000 | 98590A100 | 00000 | 98590A210 | 00000 | ||
Tin-Plated 18-8 Stainless Steel | ||||||||||||||||
| 4-40 | 3/16" | 0.030" to 0.090" | 0.187" | 0.355" | 0.175" | 0.211" | 0.015" | 1 | 98005A110 | 0000 | 98590A100 | 00000 | 98590A210 | 00000 | ||
Tight-Space Rivet Nut Assortments with Installation Tools
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Keep different sizes of rivet nuts on hand to add threads to material in confined spaces. At installation, the compact body of these nuts collapses into itself and presses slightly outward, creating snug-fitting threads that are half the length of a standard nut but just as strong.
To install, thread the nut onto the mandrel, place it into a hole, push down, and turn the installation tool's T-handle.
Tin Zinc-Plated Steel—Twice as strong as aluminum rivet nuts. The plating resists rust and helps the nut collapse without friction during installation. It's also nontoxic, unlike cadmium plating.
No. of Pieces | Rivet Nuts Included | For Material Thk. | Includes | Container Type | Each | |||
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Tin Zinc-Plated Steel | ||||||||
| 282 | 1/4"-20 (50 Pieces) 4-40 (50 Pieces) 5/16"-18 (25 Pieces) 6-32 (50 Pieces) 8-32 (50 Pieces) 10-32 (50 Pieces) | 0.03" to 0.09" | Installation Tool Six Mandrels | Plastic Case | 98560A131 | 0000000 | ||
Wrench-Driven Rivet Nut Tools
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For Thread Size | For Wrench Size | For Ratchet Size | For Rivet Nut Body Shape | For Rivet Nut Material | Each | |||
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| 4-40 | 7/8" | 11/16" | Smooth Ribbed Hex Bulb Sleeve | 18-8 Stainless Steel Aluminum Steel Titanium | 96349A904 | 000000 | ||
Air-Powered Rivet Nut Tools
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Install any size or style of rivet nut with a single tool. When you connect these tools to your compressed air line, the hydraulic fluid inside is pressurized, which generates the force needed to collapse a rivet nut. They’re also known as hydropneumatic rivet nut tools. Rather than rotating the rivet nut, like single-size rivet nut tools, these tools pull it straight back. This means you can adjust the pulling force or stroke depth to match your application. Set the pulling force if you’re installing rivet nuts into workpieces with different thicknesses. Set the stroke depth to install rivet nuts in soft or fragile materials without cracking or warping the surface.
75 to 100 psi—1/4 NPT Air Connection
Body | ||||||||||||
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For Thread Size (For Rivet Nut Body Type) | Dia. | Wd. | Head Lg. | Overall Ht. | Max. Stroke Lg. | Rivet Nut Tool Cycle Time, sec. | Wt., lb. | Includes | Each | |||
Adjustable Pull Force, Adjustable Stroke Depth, Rubber Bottom | ||||||||||||
3,960 lbf Pulling Force | ||||||||||||
| 4-40 to 3/8"-24, M4 × 0.7 mm to M10 × 1.5 mm (Ribbed, Sleeve, Smooth)—For Aluminum, Stainless Steel, Steel 4-40 to 5/16"-24, M4 × 0.7 mm to M8 × 1.25 mm (Hex)—For Aluminum, Stainless Steel, Steel 8-32 to 3/8"-16, M4 × 0.7 mm to M10 × 1.5 mm (Stud)—For Aluminum, Stainless Steel, Steel | 3 3/4" | 1 1/16" | 9 5/8" | 10 3/4" | 0.275" | 1.5 | 3.5 | Nosepiece assemblies for M4 × 0.7 mm, M5 × 0.8 mm, M6 × 1 mm, and M8 × 1.25 mm sizes | 92894A700 | 000000000 | ||
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Additional Nosepiece Assemblies for 3,960 lbf. Pulling Force |
For Thread Size | Each | ||
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| 4-40 | 92894A111 | 0000000 | |
| 8-32 | 92894A550 | 000000 | |
| 10-24 | 92894A560 | 000000 | |
| 10-32 | 92894A570 | 000000 | |
| 1/4"-20 | 92894A580 | 000000 | |
| 1/4"-28 | 92894A112 | 000000 | |
| 5/16"-18 | 92894A600 | 000000 | |
| 5/16"-24 | 92894A113 | 000000 | |
| 3/8"-16 | 92894A620 | 000000 | |
| 3/8"-24 | 92894A114 | 000000 | |
| M4 × 0.7 mm | 92894A810 | 000000 | |
| M5 × 0.8 mm | 92894A820 | 000000 | |
| M6 × 1 mm | 92894A830 | 000000 | |
| M8 × 1.25 mm | 92894A840 | 000000 | |
| M10 × 1.5 mm | 92894A850 | 000000 |
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Maintenance Kits for 3,960 lbf. Pulling Force |
Includes | Each | ||
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| Hex Key Wrench, Pin-Removal Punch, Spanner Wrench | 92894A711 | 000000 |
Lever-Style Rivet Nut Tools with Visual Stroke Indicator
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Knob Removal | Plunger Removal |
Confirm rivet nuts are installed just right—the indicator on these tools ensures you’ve applied the right amount of force. Unlike fixed-stroke tools, you don’t need to manually control the amount of force you apply. Just set your stroke length based on your rivet nut size and workpiece thickness, then squeeze the handles all the way shut to install. The indicator verifies you’ve compressed the nut properly. These tools are 50% longer than standard lever-style tools, giving you extra leverage for installation.
Mandrel and nosepiece sets are required and sold separately. Thread the rivet nut onto the mandrel and insert the nut into a drilled hole, then squeeze the handles to secure the nut.
Knob Removal—Tools with knob removal install rivet-type studs and smooth and ribbed body rivet nuts. They have a spin-to-reverse knob to quickly unthread the mandrel from the installed nut.
Plunger Removal—Tools with plunger removal install smooth and ribbed body rivet nuts. They have a quick-acting, pull-to-remove plunger that unthreads the mandrel from the installed nut.
Removal Operation Type | For Rivet Nut Body Shape | For Smooth Rivet Nut Thread Size | For Ribbed Rivet Nut Thread Size | For Rivet Stud Thread Size | Stroke Adjustability | Overall Lg. | Wt., lb. | Each | |||
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High-Leverage | |||||||||||
| Knob | Smooth Ribbed Stud | 4-40 6-32 8-32 10-24 10-32 1/4"-20 M3 × 0.5 mm M4 × 0.7 mm M5 × 0.8 mm M6 × 1 mm | 6-32 8-32 10-24 10-32 1/4"-20 1/4"-28 5/16"-18 M4 × 0.7 mm M5 × 0.8 mm M6 × 1 mm M8 × 1.25 mm M10 × 1.5 mm | 8-32 10-32 1/4"-20 5/16"-18 | Adjustable | 22" | 4.5 | 92388A120 | 0000000 | ||
| Plunger | Smooth Ribbed | 4-40 6-32 8-32 10-24 10-32 1/4"-20 5/16"-18 M3 × 0.5 mm M4 × 0.7 mm M5 × 0.8 mm M6 × 1 mm M8 × 1.25 mm M10 × 1.5 mm | 6-32 8-32 10-24 10-32 1/4"-20 1/4"-28 5/16"-18 1/2"-13 M4 × 0.7 mm M5 × 0.8 mm M6 × 1 mm M8 × 1.25 mm M10 × 1.5 mm | — | Adjustable | 20 1/2" | 5 | 92388A125 | 000000 | ||
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For Smooth and Ribbed Rivet Nuts | For Stud Rivet Nuts |
For Rivet Nut Body Shape | Choose a Thread Size | Each | ||
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| Smooth | 4-40, 6-32, 8-32, 10-24, 10-32, 1/4"-20, 5/16"-18, 3/8"-16, M3 × 0.5 mm, M4 × 0.7 mm, M5 × 0.8 mm, M6 × 1 mm, M8 × 1.25 mm, M10 × 1.5 mm | 92388A533 | 000000 | |
| Ribbed | 6-32, 8-32, 10-24, 10-32, 1/4"-20, 1/4"-28, 5/16"-18, 3/8"-16, 1/2"-13, M4 × 0.7 mm, M5 × 0.8 mm, M6 × 1 mm, M8 × 1.25 mm, M10 × 1.5 mm | 92388A122 | 00000 | |
| Stud | 8-32, 10-32, 1/4"-20, 5/16"-18, 3/8"-16 | 92388A755 | 00000 |
Single-Size Air-Powered Rivet Nut Tools
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Pistol Grip |
Use compressed air to install rivet nuts with less effort than manual tools. Tailored to specific thread sizes, these tools rotate a rivet nut with the exact force needed to collapse it onto your workpiece. They’re smaller and lighter than other powered rivet nut tools, so you can squeeze them into tighter spaces. However, they generate less force, so they’re not recommended for installing nuts into thick materials.
Air Connection | |||||||||||||
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For Thread Size | For Rivet Nut Body Shape | For Rivet Nut Material | Head Lg. | Overall Ht. | Operating Pressure, psi | Pipe Size | Thread Type | Wt., lb. | Includes | Each | |||
Pistol Grip | |||||||||||||
| 4-40 | Smooth Ribbed Bulb Sleeve | Aluminum Steel | 6" | 6" | 35 to 45 | 1/4 | NPT | 3 | Mandrel, Nosepiece | 94675A001 | 0000000 | ||
