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#4-40 Top Locking Nuts
Automation-Style Lock Nuts, Top Locking Lock Nuts or Stover Lock Nuts are lock nuts with a locking feature deformed into the top of the nut. This deformation crimps the internal thread, increasing its friction against the mating bolt or stud, leading to the locking feature.
72 results, (click on any line for more information)
| Search Results Sponsored by Perigee Manufacturing, your source for All Metal Top-Lock Nuts. For more results, visit perigeemfg.com | ||||||||
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| Supplier | Loc | Type | Material | Finish | Size | Description | Qty | |
| Buy Top Locking Nuts from one of our FCH Network Members | ||||||||
| TSF | TX | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Cadmium/Yellow | #4-40 | locking ss nut | 280 |
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| Century | FL | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Plain | #4-40 | perkin elmer 91144 | 75 |
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| Century | FL | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Cadmium/Yellow | #4-40 | ms21042-04 nut self locking | 68659 |
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| QCS | OR | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Plain | #4-40 | 4-40 hex nut self locking ms21042l04 | 2000 |
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| SJS Prod | CA | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Zinc/Yellow | #4-40 x 1/4 | 4-40 x 1/4 fill/hd slot mod thd lng=.125 st zy |
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| Cal Fastenrs | CA | Lock Nut, Top Locking, All Metal (Automation style, etc.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 | hex nylok nut low profile 18-8 304 nylon lock nt 4CNNE3/LOW | 60 |
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| Cal Fastenrs | CA | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Zinc/Clear | #4-40 | hex nylok nut low profile i see 4cnnez/cr3low 4CNNEZ/LOW | 100 |
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| Cal Fastenrs | CA | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Zinc/Clear | #4-40 | flex lock nut 21fa-440 | 893 |
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| MTP | CA | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Cadmium | #4-40 | # 4-40 cad flex-lock nuts a bb 100 fb 500 qk 2500 | 200 |
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| IndexFast | CA | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Plain | #4-40 | n440nlss 4-40 nylon insert lock nut stainless steel | inquire |
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| Global | CA | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Plain | #4-40 | MS21043-04 | 12,860 |
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| Global | CA | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Cadmium/Yellow | #4-40 | MS21042-04 | 280 |
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| Global | CA | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Plain | #4-40 | MS21042L04 | 120 |
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| Hayes | CA | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Cadmium | #4-40 | 4-40 full/lite flex style l/n cad i | 900 |
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| Hayes | CA | Lock Nut, Top Locking, All Metal (Automation style, etc.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 | ms21045c04 4-40 all metal locknut 18-8 | 154 |
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| Hayes | CA | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | #4-40 | ms21072l04 4-40 locking nutplate a286 dfl 450 | 156 |
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| American | NY | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Zinc/Yellow | #4-40 | nylon stop nut zy | 4400 |
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| SPC | TX | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Plain | #4-40 | #4-40 microsize flexloc 30fm-440 flex | 196 |
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| SPC | TX | Lock Nut, Top Locking, All Metal (Automation style, etc.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 | 4-40 microsize flexloc 58fm-440 18-8 304 w/dry film lube flex | 74 |
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| SPC | TX | Lock Nut, Top Locking, All Metal (Automation style, etc.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Silver | #4-40 | 4-40 light hex full height flexloc 59fa-440 18-8 s/s flex | 2,086 |
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| SPC | TX | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Plain | #4-40 | 4-40 light hex full height flexloc 20fa-440 flex | 17,555 |
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| SPC | TX | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Zinc/Yellow | #4-40 | 4-40 light hex full height flexloc 23fa-440-y and wax flex | 497 |
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| SPC | TX | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Cadmium | #4-40 | 4-40 light hex full height flexloc 27fa-440 cad ii flex | 201 |
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| ASMC | IL | Lock Nut, Top Locking, All Metal (Automation style, etc.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 | #4-40 coarse flexloc nut light hex full ss18-8 | 5 |
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| Olander | CA | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Brass | Plain | #4-40 x .205 | 4-40 x .205 lng barb-sert br | 2199 |
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| JET FITTING | CA | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Cadmium/Yellow | #4-40 | 4-40 lock nut steel cadmium ii plated yellow b18.2.2 | 1260 |
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| Delta | TX | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Cadmium | #4-40 | nut flexloc full height light hex cad 4-40 | 990 |
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| Delta | TX | Lock Nut, Top Locking, All Metal (Automation style, etc.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 | nut flexloc full height light hex 18-8 sst 4-40 | 100 |
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| ACF | CA | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Cadmium | #4-40 | 4-40 light hex full height flexloc nut cad plated | 28 |
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| RCFast | AZ | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Plain | #4-40 | nut, self-locking, hex flange, 4-40 MS21043-04 | inquire |
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| RCFast | AZ | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Plain | #4-40 | locknut (4-40, self-locking, 450 deg) MS21042L04 | inquire |
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| RCFast | AZ | Lock Nut, Top Locking, All Metal (Automation style, etc.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 | nut, self-locking, 4-40 304ss MS21045C04 | inquire |
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| RCFast | AZ | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Plain | #4-40 | 4-40 hex nut flexloc full height light stl | inquire |
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| RCFast | AZ | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Plain | #4-40 | 4-40 hex nut flexloc full height light cadium | inquire |
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| RCFast | AZ | Lock Nut, Top Locking, All Metal (Automation style, etc.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 | 4-40 hex nut light flexloc full height 18-8 304 | inquire |
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| AIH | AZ | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Plain | #4-40 | 4-40 self locking nut dry film lube MS21042L04 | 34962 |
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| AIH | AZ | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Plain | #4-40 | lock nut reduced height 4-40 s/s MS21043-04 | 4943 |
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| AIH | AZ | Lock Nut, Top Locking, All Metal (Automation style, etc.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 | nut 304ss MS21045C04 | 203 |
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| AIH | AZ | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Plain | #4-40 | nut NAS679A04W | 51 |
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| AIH | AZ | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Plain | #4-40 | self-locking nut carbon | 554 |
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| AIH | AZ | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Plain | #4-40 | self-locking nut carbon | 554 |
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| AIH | AZ | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Cadmium/Yellow | #4-40 | 4-40 lock nut cad plating MS21042-04 | 27 |
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| Standard | MA | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Brass | Plain | #4-40 | 4-40 full lock nut brass b18.2.2 | inquire |
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| Standard | MA | Lock Nut, Top Locking, All Metal (Automation style, etc.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 | 4-40 thin lock nut 18-8 stainless steel b18.2.2 | inquire |
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| Standard | MA | Lock Nut, Top Locking, All Metal (Automation style, etc.) | 316, 317, A4 Stainless | Plain | #4-40 | 4-40 full lock nut 316 stainless steel b18.2.2 | inquire |
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| Standard | MA | Lock Nut, Top Locking, All Metal (Automation style, etc.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 | 4-40 full lock nut 18-8 stainless steel b18.2.2 | inquire |
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| Olander | CA | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Zinc/Clear | #4-40 x 1 3/4 | 4-40 x 1 3/4 lng x 3/16 hex m/f rohs alu | 117 |
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| Olander | CA | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Aluminum | Plain | #4-40 x 7/8 | 4-40 x 7/8 lng x 1/4 hex m/f alum | 387 |
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| ULTRA | CA | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Cadmium | #4-40 | flexloc 21fa440 | 4100 |
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| ULTRA | CA | Lock Nut, Top Locking, All Metal (Automation style, etc.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Passivated | #4-40 | flexloc 50fa440 | 3500 |
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| ULTRA | CA | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Plain | #4-40 | flexloc 20fa440 | 900 |
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| ASFCORP | MI | Lock Nut, Top Locking, All Metal (Automation style, etc.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 | 4-40 full hgt hex ny in lock nut ss pkg | 500 |
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| Olander | CA | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Plain | #4-40 | 4-40 six-point locknut | 1042 |
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| Olander | CA | Lock Nut, Top Locking, All Metal (Automation style, etc.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 | 4-40 x .300 lng x 3/16 hex m/f sst | 393 |
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| Olander | CA | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Plain | #4-40 | 4-40 lock nut | 63 |
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| Olander | CA | Lock Nut, Top Locking, All Metal (Automation style, etc.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 | 4-40 self-locking nut sst steel | 2217 |
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| Olander | CA | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Plain | #4-40 | 4-40 six-point locknut | 1290 |
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| Liberty | IL | Lock Nut, Top Locking, All Metal (Automation style, etc.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 | 4-40 flex-loc nut light 18-8 s/s 18-8 s/s | 100 |
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| JHP Fasteners | MI | Lock Nut, Top Locking, All Metal (Automation style, etc.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 | pem alternative plc-440 captive cplc440 self-locking nut ss thread-4-40 | 1000 |
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| JHP Fasteners | MI | Lock Nut, Top Locking, All Metal (Automation style, etc.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Phosphate | #4-40 | pem alternative feo-440 captive cfeo440 miniture nut self-locking ss blk dry film lube thread-4-40 | 1245 |
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| MFS | KS | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Nylon | Plain | #4-40 | lock nut | 763 |
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| Trifast | TX | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | P lain | #4-40 | 4-40unc floating nut non lock-2 stl astmb633z1cr3bakesrt | 6662 |
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| Trifast | TX | Lock Nut, Top Locking, All Metal (Automation style, etc.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 | 4-40 hex loc nut a2 s/s .246a/f .89thk plain self finish | 1616 |
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| AFI | FL | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Plain | #4-40 | 4-40 self-locking nut ss silver | 3943 |
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| MTP | CA | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Cadmium | #4-40 | #4-40 cad flex-lock nuts | 200 |
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| CONTAERO | NJ | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Zinc/Clear | #4-40 | kl locknut Cr3+ | 673600 |
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| GLF | OH | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Cadmium/Yellow | #4-40 | 4-40 lock nut cad ii plating mil-spec mil-spec MS21042-04 | 210 |
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| GLF | OH | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Plain | #4-40 | 4-40 ss reduced height lock nut mil-spec mil-spec MS21043-04 | 19 |
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| GLF | OH | Lock Nut, Top Locking, All Metal (Automation style, etc.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 | #4-40 flex lock nut 18-8 s/s nut | 2050 |
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| GLF | OH | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Aluminum | Plain | #4-40 | lock nut alum nut | 417 |
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| Accutite | CA | Lock Nut, Top Locking, All Metal (Automation style, etc.) | Steel | Plain | #4-40 | ms21043-04 stainless rohs compliant | 100 |
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| Mid-Valley | CA | Lock Nut, Top Locking, All Metal (Automation style, etc.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 | lock nut top locking all metal (automation style etc.) b18.2.2 | inquire |
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