5/16 Security Screws, Steel
Security Screws, also known as Tamper-Resistant Screws, can be either machine screw style or self-tapping style, but they have a unique drive-style requires a special tool in order to tighten or loosen.
103 results, (click on any line for more information)
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Supplier | Loc | Type | Material | Finish | Size | Description | Qty | |
UltraFast | WA | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Black Oxide | 5/16-18 x 7/8 | hex washer bb blk | inquire |
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UltraFast | WA | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Zinc/Clear | 5/16 x 2 x 5 | u-bolt | inquire |
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UltraFast | WA | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Zinc/Clear | 5/16-18 x 3/4 | t-groove z | inquire |
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UltraFast | WA | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Zinc/Clear | 5/16-18 x 1 | t-groove | inquire |
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Set Screw | IL | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Zinc/Yellow | 5/16-18 x 5/16 | cup point hex socket set tamper proof (pin) & yellow | 5000 |
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Set Screw | IL | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-18 x 5/16 | cup point hex socket set with tamper proof pin | inquire |
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UltraFast | WA | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Zinc/Clear | 5/16 x 5/16 | hex-pin setsc | inquire |
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Set Screw | IL | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Zinc/Clear | 5/16-18 x 3/8 | cup point tamper proof (pin) hex socket set | inquire |
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JET FITTING | CA | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Zinc/Clear | 5/16-18 x 1/2 | cap screw button socket hex tamper proof 5/16-18x1/2 alloy steel zinc plated | 1200 |
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BHAM | AL | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-24 x 1/2 | bttn 6-lobe w/pin 300 ser | 21,088 |
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BHAM | AL | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-24 x 1/2 | bttn 6-lobe w/pin | 50,081 |
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UltraFast | WA | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Zinc/Clear | 5/16-24 x 1/2 | torx-pin bttn zn | inquire |
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BRIGHBEST | IL | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Black Oxide | 5/16-18 x 1/2 | 5/16-18 x 1/2 flat socket caps hardened tamper resistant | 2900 |
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BRIGHBEST | IL | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Black Oxide | 5/16-18 x 1/2 | 5/16-18 x 1/2 socket cap hardened tamper resistant | 1700 |
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Setko Fas | IL | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-18 x 1/2 | 5/16-18x1/2 alloy button head hex socket security pin cap screw | 100 |
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Set Screw | IL | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-18 x 5/8 | button tamper proof socket cap | inquire |
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BRIGHBEST | IL | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Black Oxide | 5/16-18 x 5/8 | 5/16-18 x 5/8 socket cap hardened tamper resistant | 1800 |
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BRIGHBEST | IL | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Black Oxide | 5/16-18 x 5/8 | 5/16-18 x 5/8 button socket caps hardened tamper resistant | 400 |
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BRIGHBEST | IL | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Black Oxide | 5/16-18 x 5/8 | 5/16-18 x 5/8 flat socket caps hardened tamper resistant | 1500 |
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Set Screw | IL | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Zinc/Clear | 5/16-18 x 3/4 | button tamper proof (pin) socket cap | inquire |
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Bryce Fastener | AZ | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16 x 3/4 | 5/16x3/4 hex-pin set screw | 3,232 |
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Bryce Fastener | AZ | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-18 x 3/4 | 5/16-18 x 3/4 truss hd penta-plus | 4 |
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Bryce Fastener | AZ | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-18 x 3/4 | 5/16-18x3/4 bh tam-6lobe m/sss | 4.5 |
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BHAM | AL | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-24 x 3/4 | bttn 6-lobe w/pin 300 ser | 5,670 |
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Komar | AR | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-18 x 3/4 torx (tamper proof) button head screw alloy st | 4320 |
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UltraFast | WA | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Zinc/Clear | 5/16-18 x 3/4 | t-groove z | inquire |
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UltraFast | WA | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Zinc/Clear | 5/16-18 x 3/40 | open eye bk | inquire |
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BRIGHBEST | IL | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Black Oxide | 5/16-18 x 3/4 | 5/16-18 x 3/4 button socket caps hardened tamper resistant | 2655 |
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BRIGHBEST | IL | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Black Oxide | 5/16-18 x 3/4 | 5/16-18 x 3/4 flat socket caps hardened tamper resistant | 500 |
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Setko Fas | IL | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-18 x 3/4 | 5/16-18x3/4 alloy button head hex socket security pin cap screw | 100 |
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Bryce Fastener | AZ | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-18 x .840 | 5/16-18x.840 rh key-rex m/s alloy dog{90qu3-37fe} | 200 |
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UltraFast | WA | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Black Oxide | 5/16-18 x 7/8 | hex washer bb blk | inquire |
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Bryce Fastener | AZ | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-18 x 1 | 5/16-18x 1 1/2 bh key-rex m/s | 1,435 |
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Bryce Fastener | AZ | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-18 x 1 | 5/16-18x1 raptor{75nx4 | 475 |
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Bryce Fastener | AZ | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-24 x 1 | 5/16-24x1 bh hex-pin m/s n/f alloy cad{53060500583} | 1,300 |
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SRF | AL | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-18 x 1 | 5/16-18 x 1 bh socket tamperproof 31C100TBSY | - |
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BHAM | AL | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-24 x 1 | bttn 6-lobe w/pin | 300 |
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UltraFast | WA | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Zinc/Clear | 5/16-18 x 1 | t-groove | inquire |
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BRIGHBEST | IL | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-18 x 1 | 5/16-18 x 1 button hd tamper proof alloy | 800 |
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BRIGHBEST | IL | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Black Oxide | 5/16-18 x 1 | 5/16-18 x 1 flat socket caps hardened tamper resistant | 500 |
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Bryce Fastener | AZ | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-18x1-1/4bh penta-plus m/s | 521 |
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Bryce Fastener | AZ | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-18 x 1 1/4 | 5/16-18x1 1/4 raptor{75nx4- | 769 |
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SRF | AL | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-18 x 1 1/4 | 5/16-18 x 1 1/4 bh socket tamperproof 31C125TBSY | - |
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BHAM | AL | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-24 x 1 1/4 | bttn 6-lobe w/pin | 240 |
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BRIGHBEST | IL | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Black Oxide | 5/16-18 x 1 1/4 | 5/16-18 x 1 1/4 socket cap hardened tamper resistant | 6100 |
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BRIGHBEST | IL | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Black Oxide | 5/16-18 x 1 1/4 | 5/16-18 x 1 1/4 flat socket caps hardened tamper resistant | 100 |
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Express | CA | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-18 x 1 1/2 | 5/16-18x1-1/2 tamper proof torx button head machine screw alloy | 400 |
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Bryce Fastener | AZ | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-18 x 1 1/2 | 5/16-18x1-1/2 bh penta-plus m/ | 1,581 |
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ASMC | IL | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-18 x 1 1/2 | (ft) coarse socket cap tamper resistant hex pin-in | 75 |
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HBBOLT | CA | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Black Oxide | 5/16 x 1 1/2 | one way truss lag blk 151470 151470 | 1,200 |
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Bryce Fastener | AZ | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16 x 1 1/2 | 5/16x1 1/2 bh key rex acme 10tpi shvd point alloy blk{x313bc} | 0.15 |
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Bryce Fastener | AZ | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16 x 1 1/2 | 5/16 x 1 1/2 bh key rex acmebz | 900 |
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Bryce Fastener | AZ | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Zinc/Clear | 5/16-18 x 1 1/2 | 5/16-18 x11/2 skt tam-torq z | 500 |
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IRF | NJ | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-9 x 1 1/2 | 5/16-9x1 1/2 round one wy type-a stl pln kioneway516x1 | 11,324 |
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MidStates | MI | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Zinc/Clear | 5/16-18 x 1 1/2 | one-way truss m/s znc | 4 |
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BHAM | AL | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-18 x 1 1/2 | spanner dr flat ms | 25 |
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UltraFast | WA | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Zinc/Clear | 5/16-18 x 1 1/2 | t-groove | inquire |
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BRIGHBEST | IL | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Black Oxide | 5/16-18 x 1 1/2 | 5/16-18 x 1 1/2 flat socket caps hardened tamper resistant | 100 |
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BRIGHBEST | IL | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Black Oxide | 5/16-18 x 1 1/2 | 5/16-18 x 1 1/2 socket cap hardened tamper resistant | 1300 |
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Bryce Fastener | AZ | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-18 x 1 3/4 | 5/16-18 x 1-3/4 fh penta-plus | 165 |
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BHAM | AL | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Cadmium | 5/16-18 x 1 3/4 | fl 6-lobe w/pin cad plt | 341 |
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BHAM | AL | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-24 x 1 3/4 | bttn 6-lobe w/pin | 77 |
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American | NY | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Zinc/Clear | 5/16-18 x 2 | one way slotted truss pl | 100 |
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Bryce Fastener | AZ | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-18 x 2 | 5/16-18x2 raptor{75nx4-37fe}exclusive | 01 |
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Lippin | CA | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Black Oxide | 5/16 x 2 | 5/16 x 2 one-way security screw black oxide | 500 |
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ISSCO | MO | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Zinc/Clear | 5/16-18 x 2 | mach one way slotted round z/p | 400 |
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HBBOLT | CA | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16 x 2 | round t/s lag one way blk | 343 |
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UltraFast | WA | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Zinc/Clear | 5/16 x 2 x 5 | u-bolt | inquire |
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UltraFast | WA | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Zinc/Clear | 5/16-18 x 2 | t-groove | inquire |
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UltraFast | WA | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Zinc/Clear | 5/16-18 x 2 | torx-pin bttn | inquire |
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UltraFast | WA | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Zinc/Clear | 5/16-18 x 2 | torx-pin flat | inquire |
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Bryce Fastener | AZ | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-18 x 2 1/4 | 5/16-18x2-1/4 bh penta-plus m/ | 655 |
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Bryce Fastener | AZ | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-18 x 2 1/2 | 5/16-18x2-1/2 bh penta-plus m | 1,085 |
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Bryce Fastener | AZ | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-18 x 2 1/2 | 5/16-18x2 1/2 bh keyed-lok m/s | 62 |
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ISSCO | MO | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Zinc/Clear | 5/16-18 x 2 1/2 | mach one way slotted round z/p | 500 |
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Bryce Fastener | AZ | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-18 x 2 3/4 | 5/16-18x2-3/4 bh penta-plus | 946 |
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Bryce Fastener | AZ | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-18 x 2 3/4 | 5/16-18x2 3/4 raptor hd penta-plus | 828 |
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Ababa | CA | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16 x 3 | 5/16 x 3 one-way truss lag stl pln | 275 |
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Ababa | CA | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16 x 3 | 5/16 x 3 one-way truss lag stl pln | 100 |
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RCFast | AZ | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Black Oxide | 5/16 x 3 | truss one-way tmprprf lag bolt stl black ox | 4800 |
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American | NY | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Zinc/Clear | 5/16-18 x 3 | one way truss pl | 100 |
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Bryce Fastener | AZ | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-18 x 3 | 5/16-18x3 bh penta-plus m/s | 51 |
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Bryce Fastener | AZ | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16 x 3 | 5/16 x 3 bh key rex acme thr | 19 |
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Lippin | CA | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Black Oxide | 5/16 x 3 | 5/16 x 3 one-way security screw black oxide | 300 |
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HBBOLT | CA | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16 x 3 | one way l/b | 213 |
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UltraFast | WA | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Zinc/Clear | 5/16-18 x 3 | torx-pin bttn | inquire |
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Express | CA | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Zinc/Clear | 5/16-18 x 3 1/2 | 5/16-18x3-1/2 tamperproof one-way round head machine screw zinc | 38330 |
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Bryce Fastener | AZ | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16 x 3 1/2 | 5/16 x 3 1/2 bh key rex acme | 800 |
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Bryce Fastener | AZ | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16 x 3 1/2 | 5/16 x 3 1/2 bh key rex acme | 45 |
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Bryce Fastener | AZ | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16 x 3 1/2 | 5/16 x 3 1/2 bh key rex acme thread 10 tpi alloy{x31-3as} | 0.36 |
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Bryce Fastener | AZ | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16 x 3 3/4 | 5/16x3-3/4 bh key rex acme 10tpi shvd point alloy blk{x313bc} | 0.15 |
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Ababa | CA | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16 x 4 | 5/16 x 4 one-way truss lag stl pln | 113 |
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Ababa | CA | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16 x 4 | 5/16 x 4 one-way truss lag stl pln | 25 |
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RCFast | AZ | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Black Oxide | 5/16 x 4 | truss one-way tmprprf lag bolt stl black ox | 2000 |
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Lippin | CA | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Black Oxide | 5/16 x 4 | 5/16 x 4 one-way security screw black oxide | 300 |
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Jackson | MS | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Zinc/Black | 5/16 x 4 | truss (#16) one-way slotted burglar bartamper resistant tapping black | 1413 |
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ZAL INDUS | CA | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Zinc/Clear | 5/16 x 4 | 5/16 x 4 one-way lag screw almond head pltd | 1,000 |
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HBBOLT | CA | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16 x 4 | one way l/b black | 186 |
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ISSCO | MO | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Zinc/Clear | 5/16-18 x 4 1/2 | mach 1way slotted button z/p | 100 |
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Ababa | CA | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16 x 5 | 5/16 x 5 one-way truss lag stl pln | 100 |
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RCFast | AZ | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Black Oxide | 5/16 x 5 | truss one-way tmprprf lag bolt stl black ox | 400 |
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Lippin | CA | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Black Oxide | 5/16 x 5 | 5/16 x 5 one-way security screw black oxide | 444 |
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ZAL INDUS | CA | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Zinc/Clear | 5/16 x 6 | 5/16 x 6 one-way lag screw pltd | 500 |
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Jackson | MS | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16 | 5/16 bit hex tamperproof | 7 |
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BRIGHBEST | IL | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16 | 5/16 short arm key tamperproof | 157 |
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BRIGHBEST | IL | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16 | 5/16 hex key short arm tamper resistant | 15829 |
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THRDFAST | AL | Tamper-Proof Security Screw (Ultra-Lok, Penta-Plus, etc.) | Steel | Plain | 5/16-18 | tamper proof nut | 55 |
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