Dimension Drawing
Specs/CAD
Unit : mm
| Part Number | M (Coarse) Nominal of Thread |
Pitch | L | D1 | D | L1 | t | T (Approx.) |
Applicable Wrench | Screwdriver Part No. |
Hexalobular Socket No. |
Qty per Pack | Mass (g) |
Price (USD) |
CAD Download |
QTY (Pack) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SRTSQ-M4-8-TZB | M4 | 0.7 | 8 | 7 | 9 | 2.6 | 0.8 | 1 | SRX-20 | SRD-6.35 | 20 | 20 | 1.61 | 10.92 | CAD | Cart |
| SRTSQ-M4-10-TZB | M4 | 0.7 | 10 | 7 | 9 | 2.6 | 0.8 | 1 | SRX-20 | SRD-6.35 | 20 | 20 | 1.77 | 10.92 | CAD | Cart |
| SRTSQ-M4-12-TZB | M4 | 0.7 | 12 | 7 | 9 | 2.6 | 0.8 | 1 | SRX-20 | SRD-6.35 | 20 | 20 | 1.92 | 10.92 | CAD | Cart |
Nabeya Bi-tech Kaisha
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Material/Finish
| SRTSQ-TZB | |
|---|---|
| Screw Body | Steel Trivalent Chromate Treatment |
| Screw Body Strength Class | 4.8 Equivalent |
| Plain Washer | Steel Trivalent Chromate Treatment |
| Spring Washer | Steel Trivalent Chromate Treatment |
Application
Equipment/devices disassembly/tampering preventionTheft prevention for outdoor facilities
Security measures
Safety measures
Characteristics
- Pan head machine screws with captive washers, with a pin at the center of the hexalobular socket＊1.
- Former JIS-standard plain washers and spring washers are integrated into the screws, preventing concerns about fallout issues. (Washer abbreviation: I=3)
- For screws with captive washers, see “What are screws with captive washers (SEMS screws)?” .
- When using a washer in spot facing, workability is improved because the bolt and washer can be mounted and removed at the same time.
- This prevents mounting and removing with regular tools.
- Install and remove with SRX Dedicated Wrench or SRXB Dedicated Bit and SRD Dedicated Magnetic Screwdriver together.
＊1： The hexalobular shape is prescribed by JIS B 1015: 2008(ISO 10664: 2005)"Hexalobular internal driving feature for bolts and screws".
