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Center-Lock Distorted-Thread Locknuts
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High-Strength Steel
Thread Size | Wd. | Ht. | Fastener Strength Grade/Class | Pkg. Qty. | Pkg. | |||
|---|---|---|---|---|---|---|---|---|
Zinc-Yellow-Chromate-Plated Steel | ||||||||
| 1/4"-20 | 7/16" | 7/32" | SAE Grade 8 | 50 | 90636A038 | 000000 | ||
| 1/4"-28 | 7/16" | 7/32" | SAE Grade 8 | 50 | 90636A041 | 00000 | ||
| 5/16"-18 | 1/2" | 17/64" | SAE Grade 8 | 50 | 90636A043 | 00000 | ||
| 5/16"-24 | 1/2" | 17/64" | SAE Grade 8 | 50 | 90636A046 | 00000 | ||
| 3/8"-16 | 9/16" | 21/64" | SAE Grade 8 | 25 | 90636A049 | 0000 | ||
| 3/8"-24 | 9/16" | 21/64" | SAE Grade 8 | 25 | 90636A051 | 00000 | ||
| 7/16"-14 | 11/16" | 3/8" | SAE Grade 8 | 10 | 90636A054 | 0000 | ||
| 7/16"-20 | 11/16" | 3/8" | SAE Grade 8 | 10 | 90636A057 | 0000 | ||
| 1/2"-13 | 3/4" | 7/16" | SAE Grade 8 | 10 | 90636A060 | 0000 | ||
| 1/2"-20 | 3/4" | 7/16" | SAE Grade 8 | 10 | 90636A063 | 00000 | ||
| 9/16"-12 | 7/8" | 31/64" | SAE Grade 8 | 10 | 90636A066 | 00000 | ||
| 5/8"-11 | 15/16" | 35/64" | SAE Grade 8 | 5 | 90636A071 | 0000 | ||
| 5/8"-18 | 15/16" | 35/64" | SAE Grade 8 | 5 | 90636A074 | 0000 | ||
| 3/4"-10 | 1 1/8" | 41/64" | SAE Grade 8 | 5 | 90636A077 | 0000 | ||
| 3/4"-16 | 1 1/8" | 41/64" | SAE Grade 8 | 5 | 90636A080 | 00000 | ||
| 7/8"-9 | 1 5/16" | 3/4" | SAE Grade 8 | 5 | 90636A083 | 00000 | ||
| 1"-8 | 1 1/2" | 55/64" | SAE Grade 8 | 1 | 90636A089 | 0000 | ||
| 1"-14 | 1 1/2" | 55/64" | SAE Grade 8 | 1 | 90636A111 | 00000 | ||
Black-Oxide Steel | ||||||||
| 1/4"-20 | 7/16" | 7/32" | SAE Grade 8 | 10 | 90636A112 | 0000 | ||
| 5/16"-18 | 1/2" | 17/64" | SAE Grade 8 | 10 | 90636A113 | 0000 | ||
| 3/8"-16 | 9/16" | 21/64" | SAE Grade 8 | 10 | 90636A114 | 0000 | ||
| 1/2"-13 | 3/4" | 7/16" | SAE Grade 8 | 5 | 90636A115 | 00000 | ||
| 5/8"-11 | 15/16" | 35/64" | SAE Grade 8 | 1 | 90636A116 | 0000 | ||
| 7/8"-9 | 1 5/16" | 3/4" | SAE Grade 8 | 1 | 90636A117 | 00000 | ||
| 1"-8 | 1 1/2" | 55/64" | SAE Grade 8 | 1 | 90636A118 | 00000 | ||
| 1"-14 | 1 1/2" | 55/64" | SAE Grade 8 | 1 | 90636A119 | 00000 | ||
Zinc-Flake-Coated Steel | ||||||||
| 1/4"-20 | 7/16" | 7/32" | SAE Grade 8 | 10 | 90636A121 | 0000 | ||
| 5/16"-18 | 1/2" | 17/64" | SAE Grade 8 | 10 | 90636A122 | 00000 | ||
| 3/8"-16 | 9/16" | 21/64" | SAE Grade 8 | 5 | 90636A123 | 0000 | ||
| 1/2"-13 | 3/4" | 7/16" | SAE Grade 8 | 5 | 90636A124 | 00000 | ||
| 5/8"-11 | 15/16" | 35/64" | SAE Grade 8 | 1 | 90636A125 | 0000 | ||
| 1"-8 | 1 1/2" | 55/64" | SAE Grade 8 | 1 | 90636A127 | 00000 | ||
Medium-Strength Steel
Thread Size | Wd., mm | Ht., mm | Fastener Strength Grade/Class | Pkg. Qty. | Pkg. | |||
|---|---|---|---|---|---|---|---|---|
Zinc-Plated Steel | ||||||||
| M5 × 0.8 mm | 8 | 4 | Class 8 | 10 | 92048A110 | 000000 | ||
| M6 × 1 mm | 10 | 5 | Class 8 | 10 | 92048A120 | 00000 | ||
| M7 × 1 mm | 11 | 5.5 | Class 8 | 5 | 92048A130 | 0000 | ||
| M8 × 1 mm | 13 | 6.5 | Class 8 | 10 | 92048A150 | 00000 | ||
| M8 × 1.25 mm | 13 | 6.5 | Class 8 | 10 | 92048A140 | 00000 | ||
| M10 × 1 mm | 17 | 8 | Class 8 | 5 | 92048A180 | 0000 | ||
| M10 × 1.25 mm | 17 | 8 | Class 8 | 5 | 92048A170 | 0000 | ||
| M10 × 1.5 mm | 17 | 8 | Class 8 | 10 | 92048A160 | 00000 | ||
| M12 × 1.25 mm | 19 | 10 | Class 8 | 5 | 92048A210 | 00000 | ||
| M12 × 1.5 mm | 19 | 10 | Class 8 | 5 | 92048A220 | 00000 | ||
| M12 × 1.75 mm | 19 | 10 | Class 8 | 5 | 92048A190 | 0000 | ||
| M14 × 1.5 mm | 22 | 11 | Class 8 | 5 | 92048A240 | 00000 | ||
| M14 × 2 mm | 22 | 11 | Class 8 | 5 | 92048A230 | 00000 | ||
| M16 × 1.5 mm | 24 | 13 | Class 8 | 5 | 92048A260 | 00000 | ||
| M16 × 2 mm | 24 | 13 | Class 8 | 5 | 92048A250 | 00000 | ||
| M22 × 1.5 mm | 32 | 18 | Class 8 | 1 | 92048A330 | 00000 | ||
Low-Strength Steel
Thread Size | Wd. | Ht. | Fastener Strength Grade/Class | Pkg. Qty. | Pkg. | |||
|---|---|---|---|---|---|---|---|---|
Zinc-Plated Steel | ||||||||
| 1/4"-20 | 7/16" | 7/32" | SAE Grade 2 | 100 | 90040A029 | 00000 | ||
| 1/4"-28 | 7/16" | 7/32" | SAE Grade 2 | 100 | 90040A120 | 00000 | ||
| 5/16"-18 | 1/2" | 17/64" | SAE Grade 2 | 100 | 90040A030 | 0000 | ||
| 5/16"-24 | 1/2" | 17/64" | SAE Grade 2 | 100 | 90040A125 | 0000 | ||
| 3/8"-16 | 9/16" | 21/64" | SAE Grade 2 | 100 | 90040A031 | 00000 | ||
| 3/8"-24 | 9/16" | 21/64" | SAE Grade 2 | 100 | 90040A130 | 00000 | ||
| 7/16"-14 | 11/16" | 3/8" | SAE Grade 2 | 50 | 90040A032 | 00000 | ||
| 7/16"-20 | 11/16" | 3/8" | SAE Grade 2 | 50 | 90040A135 | 00000 | ||
| 1/2"-13 | 3/4" | 7/16" | SAE Grade 2 | 50 | 90040A137 | 00000 | ||
| 1/2"-20 | 3/4" | 7/16" | SAE Grade 2 | 50 | 90040A140 | 00000 | ||
| 5/8"-11 | 15/16" | 35/64" | SAE Grade 2 | 25 | 90040A143 | 00000 | ||
| 5/8"-18 | 15/16" | 35/64" | SAE Grade 2 | 25 | 90040A145 | 00000 | ||
| 3/4"-10 | 1 1/8" | 41/64" | SAE Grade 2 | 10 | 90040A147 | 00000 | ||
| 3/4"-16 | 1 1/8" | 41/64" | SAE Grade 2 | 10 | 90040A150 | 00000 | ||
| 1"-14 | 1 1/2" | 55/64" | SAE Grade 2 | 5 | 90040A155 | 00000 | ||
Corrosion-Resistant Stainless Steel
Thread Size | Wd. | Ht. | Pkg. Qty. | Pkg. | |||
|---|---|---|---|---|---|---|---|
18-8 Stainless Steel | |||||||
| 1/4"-20 | 7/16" | 7/32" | 50 | 90047A029 | 00000 | ||
| 1/4"-28 | 7/16" | 7/32" | 50 | 90047A110 | 00000 | ||
| 5/16"-18 | 1/2" | 17/64" | 50 | 90047A115 | 00000 | ||
| 5/16"-24 | 1/2" | 17/64" | 25 | 90047A120 | 0000 | ||
| 3/8"-16 | 9/16" | 21/64" | 25 | 90047A125 | 0000 | ||
| 3/8"-24 | 9/16" | 21/64" | 25 | 90047A130 | 00000 | ||
| 7/16"-14 | 11/16" | 3/8" | 10 | 90047A131 | 0000 | ||
| 7/16"-20 | 11/16" | 3/8" | 10 | 90047A133 | 0000 | ||
| 1/2"-13 | 3/4" | 7/16" | 10 | 90047A135 | 0000 | ||
| 1/2"-20 | 3/4" | 7/16" | 10 | 90047A140 | 0000 | ||
| 5/8"-11 | 15/16" | 35/64" | 5 | 90047A145 | 0000 | ||
| 5/8"-18 | 15/16" | 35/64" | 5 | 90047A150 | 00000 | ||
| 3/4"-10 | 1 1/8" | 41/64" | 5 | 90047A155 | 00000 | ||
| 3/4"-16 | 1 1/8" | 41/64" | 1 | 90047A160 | 0000 | ||
| 7/8"-9 | 1 5/16" | 3/4" | 1 | 90047A165 | 0000 | ||
| 1"-8 | 1 1/2" | 55/64" | 1 | 90047A170 | 0000 | ||
| 1"-14 | 1 1/2" | 55/64" | 1 | 90047A175 | 0000 | ||
316 Stainless Steel | |||||||
| 1/4"-20 | 7/16" | 7/32" | 10 | 95878A300 | 0000 | ||
| 5/16"-18 | 1/2" | 17/64" | 10 | 95878A310 | 0000 | ||
| 3/8"-16 | 9/16" | 21/64" | 10 | 95878A320 | 0000 | ||
| 1/2"-13 | 3/4" | 7/16" | 5 | 95878A330 | 0000 | ||
| 5/8"-11 | 15/16" | 35/64" | 1 | 95878A340 | 0000 | ||
| 3/4"-10 | 1 1/8" | 41/64" | 1 | 95878A350 | 0000 | ||
Mil. Spec. Distorted-Thread Flange Nuts
Not only do these have the strongest hold of all the flange nuts we offer, they are also manufactured and tested to strict U.S. military standards for material and construction. They have irregularly shaped threads that grip the screw to resist loosening in high-vibration applications. The threads prevent the nut from backing out, but they also increase the effort to install and remove. To get these nuts off, you may need special tools, such as an impact wrench or propane torch, so they are not reusable. Nuts have a flange that distributes pressure evenly across the mounting surface without the need for a separate washer. They are ideal for securing screws in oversized or irregularly shaped holes since the flange covers a larger area than standard nuts. Also known as collar nuts.
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Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
Corrosion-Resistant Stainless Steel
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High-Temperature A286 Stainless Steel—Stronger than 316 stainless steel and withstand high temperatures up to 1500° F. These nuts resist corrosion from chemicals, such as bleach and chlorine, but they won't hold up to salt water as well as 316 stainless steel.
High-Temperature Silver-Plated A286 Stainless Steel—The silver plating reduces friction during installation, so these nuts thread on smoother than others. They are stronger than 316 stainless steel and withstand temperatures up to 800° F. Nuts resist corrosion from chemicals, such as bleach and chlorine, but won't hold up to salt water as well as 316 stainless steel.
Flange | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Thread Size | Wd. | Ht. | Dia. | Thk. | Mil. Spec. | Certificate Type | Pkg. Qty. | Pkg. | |||
High-Temperature A286 Stainless Steel | |||||||||||
| 2-56 | 1/8" | 3/32" | 0.167" | 0.01" | NAS1291C02M | Material Certificate | 5 | 98892A800 | 000000 | ||
| 4-40 | 5/32" | 1/8" | 0.206" | 0.01" | NAS1291C04M | Material Certificate | 1 | 98892A121 | 0000 | ||
| 6-32 | 3/16" | 9/64" | 0.244" | 0.01" | NAS1291C06M | Material Certificate | 1 | 98892A111 | 0000 | ||
| 8-32 | 7/32" | 3/16" | 0.29" | 0.02" | NAS1291C08M | Material Certificate | 1 | 98892A122 | 0000 | ||
| 10-32 | 1/4" | 3/16" | 0.33" | 0.02" | NAS1291C3M | Material Certificate | 1 | 98892A112 | 0000 | ||
| 1/4"-28 | 5/16" | 7/32" | 0.42" | 0.02" | NAS1291C4M | Material Certificate | 1 | 98892A113 | 0000 | ||
| 5/16"-24 | 3/8" | 17/64" | 0.52" | 0.03" | NAS1291C5M | Material Certificate | 1 | 98892A123 | 0000 | ||
| 3/8"-24 | 7/16" | 9/32" | 0.62" | 0.03" | NAS1291C6M | Material Certificate | 1 | 98892A114 | 0000 | ||
| 7/16"-20 | 1/2" | 21/64" | 0.708" | 0.04" | NAS1291C7M | Material Certificate | 1 | 98892A115 | 00000 | ||
| 1/2"-20 | 9/16" | 13/32" | 0.814" | 0.04" | NAS1291C8M | Material Certificate | 1 | 98892A116 | 00000 | ||
High-Temperature Silver-Plated A286 Stainless Steel | |||||||||||
| 4-40 | 5/32" | 1/8" | 0.206" | 0.03" | MS21043-04 | Material Certificate | 5 | 98892A100 | 00000 | ||
| 6-32 | 3/16" | 9/64" | 0.244" | 0.03" | MS21043-06 | Material Certificate | 5 | 98892A200 | 00000 | ||
| 8-32 | 7/32" | 3/16" | 0.29" | 0.03" | MS21043-08 | Material Certificate | 5 | 98892A300 | 00000 | ||
| 10-32 | 1/4" | 3/16" | 0.33" | 0.03" | MS21043-3 | Material Certificate | 5 | 98892A400 | 00000 | ||
| 1/4"-28 | 5/16" | 7/32" | 0.42" | 0.04" | MS21043-4 | Material Certificate | 5 | 98892A500 | 00000 | ||
| 5/16"-24 | 3/8" | 17/64" | 0.52" | 0.04" | MS21043-5 | Material Certificate | 1 | 98892A600 | 0000 | ||
| 3/8"-24 | 7/16" | 9/32" | 0.62" | 0.04" | MS21043-6 | Material Certificate | 1 | 98892A700 | 0000 | ||
Left-Hand-Thread Center-Lock Distorted-Thread Locknuts
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High-Strength Steel
Thick-Wall Highly Twist-Resistant Rivet Locknuts
 |
 |
Keep screws locked in place with nuts that won't budge. Irregularly shaped threads stop screws from loosening under vibration and the hex-shaped body holds the nut in place when turning screws. With thick walls that distribute heavy loads better than standard walls, these nuts are strong enough for heavy machinery such as forklifts. The screw-locking threads require high torque, so you may need an impact wrench to remove screws.
Install these nuts in a drilled or punched round hole using a rivet nut tool. Choose an air- or battery-powered tool for faster installation or to install 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.
Flange | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Thread Size | Wd. Across Flats | For Material Thk. | Body Dia. | Lg. | Installed Lg. | Dia. | Thk. | Pkg. Qty. | Pkg. | |||
Zinc-Plated Steel | ||||||||||||
| 1/4"-20 | 23/64" | 0.039" to 0.138" | 0.354" | 0.657" | 0.469" | 0.511" | 0.059" | 25 | 92009A110 | 000000 | ||
| 1/4"-20 | 23/64" | 0.138" to 0.236" | 0.354" | 0.756" | 0.469" | 0.511" | 0.059" | 25 | 92009A120 | 00000 | ||
| 1/4"-20 | 23/64" | 0.236" to 0.335" | 0.354" | 0.854" | 0.469" | 0.511" | 0.059" | 25 | 92009A130 | 00000 | ||
| 5/16"-18 | 7/16" | 0.031" to 0.157" | 0.432" | 0.771" | 0.535" | 0.63" | 0.059" | 10 | 92009A140 | 0000 | ||
| 5/16"-18 | 7/16" | 0.157" to 0.276" | 0.432" | 0.897" | 0.535" | 0.63" | 0.059" | 10 | 92009A150 | 0000 | ||
| 3/8"-16 | 33/64" | 0.039" to 0.177" | 0.511" | 0.91" | 0.689" | 0.748" | 0.079" | 10 | 92009A160 | 0000 | ||
| 3/8"-16 | 33/64" | 0.177" to 0.295" | 0.511" | 1.01" | 0.689" | 0.748" | 0.079" | 10 | 92009A170 | 0000 | ||
| M6 x 1 mm | 9 mm | 1 mm to 3.5 mm | 8.98 mm | 16.7 mm | 11.9 mm | 13 mm | 1.5 mm | 25 | 92009A180 | 00000 | ||
| M6 x 1 mm | 9 mm | 3.5 mm to 6 mm | 8.98 mm | 19.2 mm | 11.9 mm | 13 mm | 1.5 mm | 25 | 92009A190 | 00000 | ||
| M8 x 1.25 mm | 11 mm | 0.8 mm to 4 mm | 10.98 mm | 19.6 mm | 13.6 mm | 16 mm | 1.5 mm | 10 | 92009A210 | 0000 | ||
| M8 x 1.25 mm | 11 mm | 4 mm to 7 mm | 10.98 mm | 22.8 mm | 13.6 mm | 16 mm | 1.5 mm | 10 | 92009A220 | 0000 | ||
| M10 x 1.5 mm | 13 mm | 1 mm to 4.5 mm | 12.98 mm | 23.1 mm | 17.5 mm | 19 mm | 2 mm | 10 | 92009A230 | 0000 | ||
| M10 x 1.5 mm | 13 mm | 4.5 mm to 7.5 mm | 12.98 mm | 25.6 mm | 17.5 mm | 19 mm | 2 mm | 10 | 92009A240 | 0000 | ||
