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Locknuts for use with Cotter Pins
Medium-Strength Steel
 |  |
These Grade 5, Grade C, or Class 8 nuts are your go-to for fastening most machinery and equipment. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.
Steel—Best for dry environments since moisture will cause these nuts to rust.
Thread Size | Wd. | Ht. | Fastener Strength Grade/Class | For Cotter Pin Dia. | Certificate Type | Pkg. Qty. | Pkg. | |||
|---|---|---|---|---|---|---|---|---|---|---|
Zinc-Plated Steel | ||||||||||
| 1/4"-20 | 7/16" | 7/32" | SAE Grade 5 | 1/16" | — | 25 | 97190A005 | 000000 | ||
| 1/4"-28 | 7/16" | 7/32" | SAE Grade 5 | 1/16" | — | 10 | 97190A110 | 0000 | ||
| 5/16"-18 | 1/2" | 17/64" | SAE Grade 5 | 5/64" | — | 25 | 97190A010 | 00000 | ||
| 3/8"-16 | 9/16" | 21/64" | SAE Grade 5 | 7/64" | — | 25 | 97190A015 | 00000 | ||
| 3/8"-24 | 9/16" | 21/64" | SAE Grade 5 | 7/64" | — | 10 | 97190A120 | 00000 | ||
| 7/16"-14 | 11/16" | 3/8" | SAE Grade 5 | 7/64" | — | 25 | 97190A020 | 00000 | ||
| 7/16"-20 | 11/16" | 3/8" | SAE Grade 5 | 7/64" | — | 10 | 97190A130 | 0000 | ||
| 1/2"-13 | 3/4" | 7/16" | SAE Grade 5 | 7/64" | Material Certificate | 10 | 97190A025 | 0000 | ||
| 1/2"-20 | 3/4" | 7/16" | SAE Grade 5 | 7/64" | Material Certificate | 10 | 97190A140 | 00000 | ||
| 9/16"-12 | 7/8" | 31/64" | SAE Grade 5 | 9/64" | — | 10 | 97190A150 | 00000 | ||
| 9/16"-18 | 7/8" | 31/64" | SAE Grade 5 | 9/64" | — | 10 | 97190A160 | 00000 | ||
| 5/8"-11 | 15/16" | 35/64" | SAE Grade 5 | 5/32" | Material Certificate | 10 | 97190A030 | 00000 | ||
| 5/8"-18 | 15/16" | 35/64" | SAE Grade 5 | 5/32" | Material Certificate | 10 | 97190A170 | 00000 | ||
| 3/4"-10 | 1 1/8" | 41/64" | SAE Grade 5 | 5/32" | — | 5 | 97190A035 | 00000 | ||
| 3/4"-16 | 1 1/8" | 41/64" | SAE Grade 5 | 5/32" | — | 5 | 97190A180 | 00000 | ||
| 7/8"-14 | 1 5/16" | 49/64" | SAE Grade 5 | 3/16" | Material Certificate | 1 | 97190A190 | 0000 | ||
| 1"-8 | 1 1/2" | 55/64" | SAE Grade 5 | 3/16" | — | 1 | 97190A040 | 0000 | ||
| 1"-14 | 1 1/2" | 55/64" | SAE Grade 5 | 3/16" | Material Certificate | 1 | 97190A210 | 0000 | ||
| 1 1/4"-7 | 1 7/8" | 1 3/32" | SAE Grade 5 | 5/16" | — | 1 | 97190A220 | 0000 | ||
| 1 1/4"-12 | 1 7/8" | 1 3/32" | SAE Grade 5 | 5/16" | Material Certificate | 1 | 97190A230 | 00000 | ||
| M6 × 1 mm | 10 mm | 7.5 mm | Class 8 | 1.6 mm | — | 5 | 93760A212 | 0000 | ||
| M8 × 1.25 mm | 13 mm | 9.5 mm | Class 8 | 2 mm | — | 5 | 93760A222 | 0000 | ||
| M10 × 1.5 mm | 17 mm | 12 mm | Class 8 | 2.5 mm | — | 5 | 93760A233 | 0000 | ||
| M12 × 1.75 mm | 19 mm | 15 mm | Class 8 | 3.2 mm | Material Certificate | 5 | 93760A317 | 0000 | ||
| M12 × 1.5 mm | 19 mm | 15 mm | Class 8 | 3.2 mm | — | 5 | 93760A126 | 0000 | ||
| M14 × 2 mm | 22 mm | 16 mm | Class 8 | 3.2 mm | — | 1 | 93760A111 | 0000 | ||
| M14 × 1.5 mm | 22 mm | 16 mm | Class 8 | 3.2 mm | — | 1 | 93760A127 | 0000 | ||
| M16 × 2 mm | 24 mm | 19 mm | Class 8 | 4 mm | — | 5 | 93760A328 | 00000 | ||
| M16 × 1.5 mm | 24 mm | 19 mm | Class 8 | 4 mm | — | 10 | 93760A128 | 00000 | ||
| M18 × 2.5 mm | 27 mm | 21 mm | Class 8 | 4 mm | — | 1 | 93760A112 | 0000 | ||
| M20 × 2.5 mm | 30 mm | 22 mm | Class 8 | 4 mm | — | 5 | 93760A337 | 00000 | ||
| M24 × 3 mm | 36 mm | 27 mm | Class 8 | 5 mm | — | 1 | 93760A340 | 0000 | ||
| M24 × 2 mm | 36 mm | 27 mm | Class 8 | 5 mm | Material Certificate | 1 | 93760A129 | 00000 | ||
| M27 × 3 mm | 41 mm | 30 mm | Class 8 | 5 mm | — | 1 | 93760A113 | 00000 | ||
| M30 × 3.5 mm | 46 mm | 33 mm | Class 8 | 6.3 mm | Material Certificate | 1 | 93760A114 | 00000 | ||
Steel | ||||||||||
| M12 × 1.5 mm | 19 mm | 15 mm | Class 8 | 3.2 mm | — | 10 | 93760A131 | 0000 | ||
| M14 × 2 mm | 22 mm | 16 mm | Class 8 | 3.2 mm | — | 1 | 93760A115 | 0000 | ||
| M14 × 1.5 mm | 22 mm | 16 mm | Class 8 | 3.2 mm | — | 1 | 93760A132 | 0000 | ||
| M16 × 2 mm | 24 mm | 19 mm | Class 8 | 4 mm | — | 1 | 93760A116 | 0000 | ||
| M16 × 1.5 mm | 24 mm | 19 mm | Class 8 | 4 mm | — | 1 | 93760A133 | 0000 | ||
| M18 × 2.5 mm | 27 mm | 21 mm | Class 8 | 4 mm | Material Certificate | 1 | 93760A117 | 0000 | ||
| M20 × 2.5 mm | 30 mm | 22 mm | Class 8 | 4 mm | — | 1 | 93760A118 | 0000 | ||
| M24 × 3 mm | 36 mm | 27 mm | Class 8 | 5 mm | — | 1 | 93760A119 | 0000 | ||
| M30 × 3.5 mm | 46 mm | 33 mm | Class 8 | 6.3 mm | — | 1 | 93760A121 | 00000 | ||
| M36 × 4 mm | 55 mm | 38 mm | Class 8 | 6.3 mm | — | 1 | 93760A122 | 00000 | ||
| M36 × 3 mm | 55 mm | 38 mm | Class 8 | 6.3 mm | — | 1 | 93760A134 | 00000 | ||
| M42 × 4.5 mm | 65 mm | 46 mm | Class 8 | 8 mm | — | 1 | 93760A123 | 00000 | ||
| M48 × 5 mm | 75 mm | 50 mm | Class 8 | 8 mm | — | 1 | 93760A124 | 00000 | ||
| M56 × 5.5 mm | 85 mm | 57 mm | Class 8 | 8 mm | Material Certificate | 1 | 93760A125 | 00000 | ||
Low-Strength Steel
|
|
Thread Size | Wd. | Ht. | For Cotter Pin Dia. | Certificate Type | Pkg. Qty. | Pkg. | |||
|---|---|---|---|---|---|---|---|---|---|
Zinc-Plated Steel | |||||||||
| 1/4"-20 | 7/16" | 7/32" | 1/16" | — | 50 | 95030A110 | 000000 | ||
| 1/4"-28 | 7/16" | 7/32" | 1/16" | — | 50 | 95030A120 | 00000 | ||
| 5/16"-18 | 1/2" | 17/64" | 5/64" | — | 25 | 95030A130 | 0000 | ||
| 5/16"-24 | 1/2" | 17/64" | 5/64" | Material Certificate | 25 | 95030A140 | 0000 | ||
| 3/8"-16 | 9/16" | 21/64" | 7/64" | — | 25 | 95030A150 | 00000 | ||
| 3/8"-24 | 9/16" | 21/64" | 7/64" | — | 25 | 95030A160 | 00000 | ||
| 7/16"-14 | 11/16" | 3/8" | 3/32" | — | 25 | 95030A170 | 00000 | ||
| 7/16"-20 | 11/16" | 3/8" | 3/32" | — | 25 | 95030A180 | 00000 | ||
| 1/2"-13 | 3/4" | 7/16" | 1/8" | — | 25 | 95030A190 | 00000 | ||
| 1/2"-20 | 3/4" | 7/16" | 1/8" | — | 25 | 95030A210 | 00000 | ||
| 9/16"-12 | 7/8" | 31/64" | 7/64" | — | 10 | 95030A220 | 00000 | ||
| 9/16"-18 | 7/8" | 31/64" | 7/64" | — | 5 | 95030A230 | 0000 | ||
| 5/8"-11 | 15/16" | 35/64" | 5/32" | — | 10 | 95030A240 | 0000 | ||
| 5/8"-18 | 15/16" | 35/64" | 5/32" | — | 10 | 95030A250 | 0000 | ||
| 3/4"-10 | 1 1/8" | 21/32" | 5/32" | — | 10 | 95030A260 | 00000 | ||
| 3/4"-16 | 1 1/8" | 21/32" | 5/32" | — | 10 | 95030A270 | 00000 | ||
| 7/8"-9 | 1 5/16" | 3/4" | 5/32" | — | 5 | 95030A280 | 00000 | ||
| 7/8"-14 | 1 5/16" | 3/4" | 5/32" | — | 5 | 95030A290 | 00000 | ||
| 1"-8 | 1 1/2" | 55/64" | 3/16" | Material Certificate | 5 | 95030A310 | 00000 | ||
| 1"-14 | 1 1/2" | 55/64" | 3/16" | — | 5 | 95030A320 | 00000 | ||
| 1 1/4"-7 | 1 7/8" | 1 3/32" | 9/32" | — | 1 | 95030A350 | 0000 | ||
| 1 1/4"-12 | 1 7/8" | 1 1/16" | 9/32" | — | 1 | 95030A360 | 0000 | ||
| 1 1/2"-6 | 2 1/4" | 1 5/16" | 5/16" | — | 1 | 95030A370 | 00000 | ||
| 1 1/2"-12 | 2 1/4" | 1 5/16" | 5/16" | — | 1 | 95030A380 | 00000 | ||
| 1 3/4"-5 | 2 5/8" | 1 1/2" | 3/8" | Material Certificate | 1 | 95030A390 | 00000 | ||
| 1 3/4"-12 | 2 5/8" | 1 1/2" | 3/8" | Material Certificate | 1 | 95030A410 | 00000 | ||
| 2"-4 1/2 | 3" | 1 23/32" | 3/8" | Material Certificate | 1 | 95030A420 | 00000 | ||
| 2"-12 | 3" | 1 23/32" | 3/8" | Material Certificate | 1 | 95030A430 | 00000 | ||
Black-Oxide Steel | |||||||||
| 1 1/2"-12 | 2 1/4" | 1 9/32" | 5/16" | — | 1 | 95030A610 | 00000 | ||
Steel | |||||||||
| 1/4"-20 | 7/16" | 7/32" | 1/16" | — | 25 | 95030A510 | 0000 | ||
| 5/16"-24 | 1/2" | 17/64" | 5/64" | — | 25 | 95030A520 | 0000 | ||
| 1"-14 | 1 1/2" | 55/64" | 3/16" | — | 1 | 95030A530 | 0000 | ||
Corrosion-Resistant Stainless Steel
|
|
Thread Size | Wd. | Ht. | For Cotter Pin Dia. | Certificate Type | Pkg. Qty. | Pkg. | |||
|---|---|---|---|---|---|---|---|---|---|
18-8 Stainless Steel | |||||||||
| 10-32 | 3/8" | 1/4" | 3/64" | — | 5 | 91853A510 | 000000 | ||
| 1/4"-20 | 7/16" | 9/32" | 1/16" | — | 5 | 91853A029 | 00000 | ||
| 1/4"-28 | 7/16" | 9/32" | 1/16" | — | 5 | 91853A515 | 00000 | ||
| 5/16"-18 | 1/2" | 21/64" | 5/64" | — | 5 | 91853A030 | 00000 | ||
| 5/16"-24 | 1/2" | 21/64" | 5/64" | — | 5 | 91853A520 | 00000 | ||
| 3/8"-16 | 9/16" | 13/32" | 3/32" | — | 1 | 91853A031 | 0000 | ||
| 3/8"-24 | 9/16" | 13/32" | 3/32" | — | 1 | 91853A525 | 0000 | ||
| 1/2"-13 | 3/4" | 9/16" | 1/8" | Material Certificate | 1 | 91853A033 | 0000 | ||
| 1/2"-20 | 3/4" | 9/16" | 1/8" | Material Certificate | 1 | 91853A535 | 0000 | ||
| 5/8"-11 | 15/16" | 23/32" | 5/32" | Material Certificate | 1 | 91853A035 | 0000 | ||
| 5/8"-18 | 15/16" | 23/32" | 5/32" | Material Certificate | 1 | 91853A545 | 0000 | ||
| 3/4"-10 | 1 1/8" | 13/16" | 5/32" | Material Certificate | 1 | 91853A036 | 0000 | ||
| 3/4"-16 | 1 1/8" | 13/16" | 5/32" | Material Certificate | 1 | 91853A550 | 0000 | ||
| 7/8"-9 | 1 5/16" | 29/32" | 5/32" | — | 1 | 91853A037 | 00000 | ||
| 1"-8 | 1 1/2" | 1" | 3/16" | Material Certificate | 1 | 91853A038 | 00000 | ||
| 1 1/4"-7 | 1 7/8" | 1 1/4" | 7/32" | Material Certificate | 1 | 91853A040 | 00000 | ||
| 1 1/2"-6 | 2 1/4" | 1 1/2" | 1/4" | Material Certificate | 1 | 91853A041 | 00000 | ||
