Sub-Total
Machine Screws
Machine Screws
Machine screws, may also be known as set screws. Both have machine threads, as opposed to self tapping or spring nut screw threads, so really the terms ‘machine screw’ and ‘set screw’ are interchangeable. What we define as machine screws have pan, countersunk or raised (i.e. oval) countersunk heads, while our set screws have hex heads. Machine, self tapping and spring nut screws often also have the word ‘recessed’ attached to the head description, often causing confusion. It simply means cross head screw drive; on very old recessed screws this means Phillips type screw drive, but for many decades now it has meant Pozidriv (or ‘PZ’), a stronger type of cross head screw drive that doesn’t ‘cam out’ or slip so easily when finally tightening the screw.
| Slotted Countersunk Head BA Machine Screws |  |
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| Part No | Nom. Thread Dia. | Thread Type | Overall Length | Remarks | Screwdriver Type |
| AJD2246C | 0.1850" (2 BA) | BA | 3/4" | Chrome | Flat Blade |
| Recessed Countersunk Head UNC Machine Screws |  |
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| Part No | Nom. Thread Dia. | Thread Type | Overall Length | Remarks | Screwdriver Type |
| CMZ204 | 0.138" (No 6) | UNC | 1/4" | Zinc | Pozidriv No 2 |
| CMZ210 | 0.138" (No 6) | UNC | 5/8" | Zinc | Pozidriv No 2 |
| CMZ212 | 0.138" (No 6) | UNC | 3/4" | Zinc | Pozidriv No 2 |
| SF504041 | 1/4" | UNC | 1/2" | Zinc | Pozidriv No 3 |
| Recessed Countersunk Head UNF Machine Screws | |
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| Part No | Nom. Thread Dia. | Thread Type | Overall Length | Remarks | Screwdriver Type |
| SF910161 | 0.190" (No 10) | UNF | 1/2" | Zinc | Pozidriv No 2 |
| CMZ310 | 0.190" (No 10) | UNF | 5/8" | Zinc | Pozidriv No 2 |
| CMZ312 | 0.190" (No 10) | UNF | 3/4" | Zinc | Pozidriv No 2 |
| SF910960 | 0.190" (No 10) | UNF | 3" | Zinc | Pozidriv No 2 |
| CMZ407 | 1/4" | UNF | 7/16" | Zinc | Pozidriv No 3 |
| CMZ408 | 1/4" | UNF | 1/2" | Zinc | Pozidriv No 3 |
| CMZ410 | 1/4" | UNF | 5/8" | Zinc | Pozidriv No 3 |
| CMZ412 | 1/4" | UNF | 3/4" | Zinc | Pozidriv No 3 |
| SF604121 | 1/4" | UNF | 1 1/4" | Zinc | Pozidriv No 3 |
| CMZ422 | 1/4" | UNF | 1/3/8" | Zinc | Pozidriv No 3 |
| CMP422 | 1/4" | UNF | 1 3/8" | Chrome | Pozidriv No 3 |
| CMZ428 | 1/4" | UNF | 1 3/4" | Zinc | Pozidriv No 3 |
| Slotted Pan Head BA Machine Screws |  |
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| Part No | Nom. Thread Dia. | Thread Type | Overall Length | Remarks | Screwdriver Type |
| AJD1742Z | 0.1102" (6 BA) | BA | 1/4" | Zinc | Flat Blade |
| Recessed Pan Head UNC Machine Screws |  |
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| Part No | Nom. Thread Dia. | Thread Type | Overall Length | Remarks | Screwdriver Type |
| SE806121 | 0.138" (No 6) | UNC | 3/8" | Zinc | Pozidriv No 2 |
| SE806201 | 0.138" (No 6) | UNC | 5/8" | Zinc | Pozidriv No 2 |
| 27H8811 | 0.138" (No 6) | UNC | 7/8" | Chrome | Pozidriv No 2 |
| PMZ216 | 0.138" (No 6) | UNC | 1" | Zinc | Pozidriv No 2 |
| Recessed Pan Head UNF Machine Screws | |
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| Part No | Nom. Thread Dia. | Thread Type | Overall Length | Remarks | Screwdriver Type |
| PMZ305 | 0.190" (No 10) | UNF | 5/16" | Zinc | Pozidriv No 2 |
| PMZ306 | 0.190" (No 10) | UNF | 3/8" | Zinc | Pozidriv No 2 |
| PMP306 | 0.190" (No 10) | UNF | 3/8" | Chrome | Pozidriv No 2 |
| PMZ307 | 0.190" (No 10) | UNF | 7/16" | Zinc | Pozidriv No 2 |
| SE910144 | 0.190" (No 10) | UNF | 7/16" | Black | Pozidriv No 2 |
| PMZ308 | 0.190" (No 10) | UNF | 1/2" | Zinc | Pozidriv No 2 |
| PMZ310 | 0.190" (No 10) | UNF | 5/8" | Zinc | Pozidriv No 2 |
| PMZ312 | 0.190" (No 10) | UNF | 3/4" | Zinc | Pozidriv No 2 |
| PMP312 | 0.190" (No 10) | UNF | 3/4" | Chrome | Pozidriv No 2 |
| PMZ314 | 0.190" (No 10) | UNF | 7/8" | Zinc | Pozidriv No 2 |
| PMZ316 | 0.190" (No 10) | UNF | 1" | Zinc | Pozidriv No 2 |
| PMZ320 | 0.190" (No 10) | UNF | 1 1/4" | Zinc | Pozidriv No 2 |
| SE604031 | 1/4" | UNF | 3/8" | Zinc | Pozidriv No 3 |
| PMZ408 | 1/4" | UNF | 1/2" | Zinc | Pozidriv No 3 |
| PMZ410 | 1/4" | UNF | 5/8" | Zinc | Pozidriv No 3 |
| PMZ412 | 1/4" | UNF | 3/4" | Zinc | Pozidriv No 3 |
| SE604061 | 1/4" | UNF | 3/4" | Zinc | Pozidriv No 3 |
| SE605041 | 5/16" | UNF | 1/2" | Zinc | Pozidriv No 4 |
| SE605091 | 5/16" | UNF | 1 1/8" | Zinc | Pozidriv No 4 |
| Recessed Pan Head Metric Fine Machine Screws | |
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| Part No | Nom. Thread Dia. | Thread Type | Overall Length | Remarks | Screwdriver Type |
| SE104161 | 4mm (M4) | Metric Fine | 16mm | Zinc | Pozidriv No 2 |
| SE104165 | 4mm (M4) | Metric Fine | 16mm | Black | Pozidriv No 2 |
| SE105081 | 5mm (M5) | Metric Fine | 8mm | Zinc | Pozidriv No 2 |
| SE105101 | 5mm (M5) | Metric Fine | 10mm | Zinc | Pozidriv No 2 |
| SE106161 | 6mm (M6) | Metric Fine | 16mm | Zinc | Pozidriv No 3 |
| SE106201 | 6mm (M6) | Metric Fine | 20mm | Zinc | Pozidriv No 3 |
| Recessed Raised Countersunk Head UNF Machine Screws |  |
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| Part No | Nom. Thread Dia. | Thread Type | Overall Length | Remarks | Screwdriver Type |
| RMP306 | 0.190" (No 10) | UNF | 3/8" | Chrome | Pozidriv No 2 |
| RMP307 | 0.190" (No 10) | UNF | 7/16" | Chrome | Pozidriv No 2 |
| RMZ308 | 0.190" (No 10) | UNF | 1/2" | Zinc | Pozidriv No 2 |
| RMP308 | 0.190" (No 10) | UNF | 1/2" | Chrome | Pozidriv No 2 |
| RMZ310 | 0.190" (No 10) | UNF | 5/8" | Zinc | Pozidriv No 2 |
| RMP310 | 0.190" (No 10) | UNF | 5/8" | Chrome | Pozidriv No 2 |
| RMZ312 | 0.190" (No 10) | UNF | 3/4" | Zinc | Pozidriv No 2 |
| RMP312 | 0.190" (No 10) | UNF | 3/4" | Chrome | Pozidriv No 2 |
| RMZ316 | 0.190" (No 10) | UNF | 1" | Zinc | Pozidriv No 2 |
| RMP316 | 0.190" (No 10) | UNF | 1" | Chrome | Pozidriv No 2 |
| SG604041 | 1/4" | UNF | 1/2" | Zinc | Pozidriv No 3 |
| SG604051 | 1/4" | UNF | 5/8" | Zinc | Pozidriv No 3 |
| RMP414 | 1/4" | UNF | 7/8" | Chrome | Pozidriv No 3 |
| RMZ510 | 5/16" | UNF | 5/8" | Zinc | Pozidriv No 4 |
