Mounting screw
screw 3x6 nc rsd csk hd
Mounting screw
screw 3x6 nc rsd csk hd

General Accessories Screws, 75mm x M3.5 x 0.8 Pitch, Plated

Catalogue Number: 355B
Mounting screw
screw 3x6 nc rsd csk hd
Mounting screw
screw 3x6 nc rsd csk hd
RRP (Inc. GST)


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Product brand
Surface treatment
zinc plated
Thread type
75 mm
Shape of screw head
raised countersunk
Package 1 Weight
4 g
Package 1 Height
3 mm
Package 1 width
6 mm
Package 1 Length
75 mm
EU RoHS Directive
Mercury free
RoHS exemption information
China RoHS Regulation
Product out of China RoHS scope. Substance declaration for your information
Environmental Disclosure

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Frequently Asked Questions

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What is the part number of the lock nut for 355 series screw?

359 is the locknut for 355 series screw.
  • Size: 6 mm x 6 mm
  • fits M3.5 x 0.8 mm pitch screws
For further information, please visit

Can I extend the length of my Environmental Sensors and Probes?


Can I extend the length of my Environmental Sensors and Probes?

Product Line

  • Environmental Monitoring Products
    • NetBotz 250
    • NetBotz 355, 455, 450, 550, 570
    • Environmental Monitoring Unit/System

  • All serial numbers
  • All firmware versions


This document pertains to the Environmental Sensors and Probes that can be connected to APC's Environmental Monitoring and Management Units (AP9312, AP9319, AP9320, and AP9340) and version 3 NetBotz Appliances.


  • AP9512T/THBLK - We do not officially support lengthening the temperature humidity probe with PS/2 extension cables. However, though not officially supported, we have extended the length using two 12 foot PS/2 extension cables for a total of 36 feet.
  • AP9335T - To increase the length, you must connect an additional Cat5 cable, connected via an RJ-45 coupler.
    • AP9312, AP9319, AP9320, AP9340 - 50 ft.
    • NetBotz 200 - 50 ft.
    • NetBotz 250 - 50 ft.
    • NetBotz 355, 455, 450, 550, 570 - 50 ft.
  • AP9335TH - To increase the length, you must connect an additional Cat5 cable, connected via an RJ-45 coupler.​
    • AP9312, AP9319, AP9320, AP9340 - 50 ft.
    • NetBotz 200 - 50 ft.
    • NetBotz 250 - 50 ft.
    • NetBotz 355, 455, 450, 550, 570 - 50 ft.
  • AP9520T/TH - This sensor connects via A-link communication. The Alink protocol has a maximum distance of 1000 meters (3,280 ft).  However, these sensors are connected via Cat5 cabling which has a functional limitation of 100m per length.  For lengths longer than 100m, a repeater device is required to amplify the signal.

Additional information on connecting Environmental Sensors and Probes can be obtained via the User's Manual for the AP9312, AP9319, AP9320, AP9340, and current NetBotz products.


NetBotz | Can I change the address on a NetBotz A-link sensor pod or rack access pod?


Can I change the address on a NetBotz NBPD0150, NBPD0155, or NBPD0170?

Product Line:
NetBotz Appliances (200, 250, 355, 450, 455, 550, & 570)
NetBotz Sensor Pods (NBPD0150 & NBPD0155)
NetBotz Rack Access Pod (NBPD0170)

NetBotz (all versions)

NetBotz A-link sensor pods and rack access pods get their addresses programmatically.


There is no way to manually configure the address on these pods.

NetBotz | What is compatible?

What is compatible with a NetBotz Appliance?

Product Line:
NetBotz Appliance (250, 355, 450, 455, 570, & 750)

NetBotz (all versions)

This article explains in detail the entire NetBotz product line compatibility for Universal Sensors, Cameras, Rack Access, and Software.


NetBotz Appliance Compatibility Matrix

NetBotz Appliance Specifications Chart

NetBotz 250 Brochure

NetBotz 750 Brochure​

NetBotz v3 | Camera POD 160A appears to not function properly

Why does the Camera POD 160A appear to not work with the NetBotz appliance it is connected to?

Product Line:
NetBotz v3 Wall Appliance: 455/456 (NBWL0455/6)
NetBotz v3 Rack Appliance: 450/451 (NBRK0450/1), 550 (NBRK0550), & 570 (NBRK0570)
NetBotz v3 Accessories: Camera POD 160A (NBPD0160A)

NetBotz v3 (firmware below 4.6.2)
NetBotz Camera POD 160A

Newer NetBotz Camera Pods (NBPD0160A) are running a hardware revision that are not compatible with older NetBotz firmware. This causes the camera to appear failed and not register on the main NetBotz unit. 


Updating the NetBotz appliance to firmware version 4.6.2 or later will correct the problem.  If you have upgraded or are already running 4.6.2 or later and are still experiencing difficulties, contact technical support.
Please note that this could also happen on a NetBotz 355A or 455A with the on-board camera with firmware prior to 4.6.2..

Verifying NetBotz Appliance Firmware Revision

1) Log into the NetBotz appliance using the Advanced View application.
NOTE: For instructions on downloading Advanced View, see knowledge base FA230223.

2) Select the About tab.

3) The firmware revision will be listed in the Bootstrap Version field.

Upgrade NetBotz Appliance Firmware

Instructions on upgrading a NetBotz appliance firmware can be found within knowledge base FA158254.


Serial Terminal Connection Parameters for all NetBotz Appliances


Serial Terminal Connection Parameters for all NetBotz Appliances

Product Line:



Versions as described below
terminal emulation


Terminal emulation (ie. Hyper-Terminal) configuration for communications with NetBotz appliances.


Terminal emulation is often used for initial IP configuration on NetBotz appliances. Hyper-terminal or Putty are often used for this configuration.

Serial Terminal Connection Parameters for all NetBotz Appliances

When connecting to a Netbotz appliance or a NetBotz Central via a serial cable, the terminal settings must be set to:

38400 and 8-N-1

When connecting to a models 300, 303, 310, or 400, you must use a standard serial cable, such as the kind used to connect a modem to a PC.

When connecting to models 320, 420 or 500, you must use a NULL modem cable.

When connecting to models 355, 455, 550, 570 or similar version 3 Netbotz, you must use a USB A-B cable.

The NetBotz 200 uses a Null Modem cable and a baud rate of 9600.

NOTE: When connecting to a NetBotz Central, you must use a NULL modem cable.

NetBotz Room Monitor 355/455 POE Power Specifications


NetBotz Room Monitor 355/455 POE Power Specifications

Product Line:



NetBotz Version 3 using POE


POE specifications


The NetBotz 355 and 455 are Class 0 POE devices.

The IEEE standard 802.3 for supplying power over Ethernet allows the device providing power to use a voltage between 36–57 V DC. The nominal voltage is 48 V with a current of 10–400 mA, subject to a maximum load power of 15.40 Watts.

How many data classes in the IEC61850 protocol are there and what are the subcategories?

There are a total of 355 data classes. The are divided into 7 categories as listed below:
Data Classes Number
1. System Information 13
2. Physical Device Information 11
3. Measureands 66
4. Metered Values 14
5. Controllable Data 36
6. Status Information 85
7. Settings 130

Legacy KB System (APS) Data: RESL204873 V1.0, Originally authored by MiZe on 03/19/2011, Last Edited by MiZe on 03/19/2011
Related ranges: SFT 2841 - SFT2848 (Sepam series 20, 40, 80 software)

Can StruxureWare Data Center Expert be configured to alert for NetBotz 3xx, 4xx, and 5xx devices?


Can StruxureWare Data Center Expert be configured to alert for NetBotz 3xx, 4xx, and 5xx devices?

Product Line:

StruxureWare Data Center Expert


StruxureWare Data Center Expert monitoring NetBotz using HTTP or HTTPS


StruxureWare does not alert for NetBotz 3xx, 4xx, or 5xx devices that are being monitored using http or https (please note there is no DCE option to monitor these devices using SNMP.)


Ever since their integration with NetBotz Central, NetBotz devices were designed to alert for themselves. This was done to eliminate NetBotz Central as a single point of failure. This functionality is retained by DCE.

Although you can configure the NetBotz appliance through DCE, the alerting for sensors, their thresholds, and their communications status is handled by the NetBotz appliance directly. The only alert StruxureWare DCE will alert for is if DCE itself loses communications with the NetBotz device (and only if the DCE server has a user with an associated e-mail that also has access to that NetBots appliance.)  This does not necessarily mean that the NetBotz is off-line or even that it is not capable of alerting for itself, this simply means that DCE can not communicate and it could be because of anything from user/password changes to the device itself actually being off-line.

Please note that this is different than the NetBotz Rack Access AP9361, NetBotz 200, or NetBotz 250 which are monitored using SNMP. Devices monitored in this manner can be configured to alert for themselves but they are normally configured to alert through DCE for convenience.

NetBotz 300-500 Series | Password reset procedure

How do I reset the password on a 300-500 series NetBotz appliance.

Product Line:
NetBotz 300-500 Series (355, 455, 450, 550, & 570)

NetBotz 300-500 Series (all versions)

Recover from lost client/web password or root password.


Recovering a Lost Web/Advanced View/Root Password

1) Locate the reset switch on the appliance.  On a wall mount version (355/455) the reset button is on the bottom next to the USB-B port.  On a Rack Mount appliance (450/550/570) the reset button is next to the Input Power connection.

2) Using a thin wire such as a paperclip, press and hold down the reset switch for ten seconds. This
will cause the system to reboot.

3. Once the system reboots, you have two minutes to log in using the following default login values:
     a. For Advanced View
          • User ID: apc
          • Password: apc
     b. For the console
          • User ID: root
          • Password: apc

4. Once you have logged in to Advanced View, change the root password and apc account password to ensure security.
Note: If you do not log in within two minutes after holding down the reset switch, you must repeat the procedure.

Note: On older Version 2 NetBotz 320, 420, and 500 appliances, the password alone can not be reset. The entire device must be reset using the "configreset" option as detailed in k-base FA158175.


NetBotz 355 | Physical Description

   Physical Description of the NetBotz 355 and 355A

Product Line:
   NetBotz version 3
      - Wall Monitor 355
      - Wall Monitor 355A

   NetBotz 355/355A (all firmware versions)


Physical Description - Front

Item Description
1 Vented internal sensors Vented opening for airflow, temperature, and humidity sensors.
2 Network link LED Shows the status of the network connection. Blinks to indicate network traffic (green = connected at 10 Mbps; yellow = connected at 100 Mbps).
3 Power LED Indicates whether the unit is receiving power (green = receiving power; dark = not receiving power)
4 Camera LED Blinks steadily when the integrated camera is active.
5 Alert LED Indicates the alert status of the system.  When more than one alert exists, the most severe will be indicated.
- Flashing once every eight seconds = Informational
- Flashing one very four seconds = Warning
- Flashing once every two seconds = Error
- Flashing once every second = Critical
- Flashing twice per second = Failure
6 Temperature display - Displays the current temperature from 0 to 99 in Centigrade or Fahrenheit. The Temperature reading comes from the internal temperature sensor. If the temperature exceeds 99, the display will flash 99.
- When the unit first receives power, displays the unique identifier number for one minute.
- If an alert exists, flashes at the same rate as the Alert LED.
- During firmware upgrade, displays 88.
7 Lens housing Must be removed to change the focus of the integrated camera.

Physical Description - Back
Item Description
1 Sensor ports (4) Used for connecting APC by Schneider Electric sensors, third-party dry-contact sensors, and standard third-party 0-5 V sensors. Third-party dry-contact state sensors require the NetBotz Dry Contact Cable (NBES0304). Standard third-party 0-5 V sensors require the NetBotz 0-5 V Sensor Cable (NBES0305).
2 10/100 Base-T network port Provides for a 10/100 Base-T network connection and power through Power-over-Ethernet (PoE). (The appliance operates at 100 Base-T only.) Status and link LEDs indicate network traffic:
- Status LED: blinks orange and green at start-up, then indicates the status of the network connection (solid green = IP address established; blinking green = attempting to obtain an IP address).
- Link LED: blinks to indicate network traffic (green = connected at 10 Mbps; orange = connected at 100 Mbps).
3 USB port Used to configure the appliance.
4 Reset Used to restart the appliance.

The complete NetBotz 455 Installation and Quick Configuration Manual can be found here.

NetBotz | End of Sale & End of Support Information

   NetBotz - End of Sale & End of Support Information

Product Line:
   NetBotz (all models)
   NetBotz Central

   NetBotz (all versions)


NetBotz End of Sale & End of Support
SKU Description End of Sale End of Support Recommended Replacement
AP9319 Environmental Monitoring Unit July 2006 July 2008 NBRK0250
AP9320 Environmental Management System September 2015 September 2017 NBRK0250
AP9340 Environmental Manager January 2017 January 2019 NBRK0250
NBRK0200 / NBRK0201 NetBotz Rack Monitor 200 October 2016 October 2018 NBRK0250
AP9360 Proximity Card Rack Lock Kit August 2007 August 2009 NBACS125
AP9361 Rack Access PX - HID October 2016 October 2018 NBACS125
NBWL0300* WallBotz 300 / 300B January 2003 January 2005 NBWL0355A
NBRK0303 RackBotz 303 January 2003 January 2005 NBRK0750
WallBotz 310 / 310C July 2005 June 2008 NBWL0355A
RackBotz 310 / 310C July 2005 June 2008 NBRK0750
WallBotz 400 / 400C July 2005 June 2008 NBWL0455A
RackBotz 400 / 400C July 2005 June 2008 NBRK0750
NetBotz 320 NetBotz 320 Rack Mount July 2009 July 2014 NBRK0750
NetBotz 320 Wall Mount July 2009 July 2014 NBWL0355A
NetBotz 320 Environmental July 2012 July 2017 NBRK0750
NetBotz 420 NetBotz 420 Rack Mount May 2009 May 2014 NBRK0750
NetBotz 420 Wall Mount May 2009 May 2014 NBWL0455A
NetBotz 420 Environmental May 2012 May 2017 NBRK0750
NetBotz 500 NetBotz 500 Wall Mount October 2013 October 2018 NBWL0455A
NetBotz 550
NetBotz 551
NetBotz Rack Monitor 550 / 551 June 2013 December 2018 NBRK0750 OR
Firmware for the NetBotz 550/551 is still being released as it is the same firmware that is used with the 355/455/450/570.  Support can no longer be purchased on the NetBotz 550 due to the 5 year limitation of hardware/software support.
V2 Sensors* Sensors with PS/2 Connectors October 2017 October 2019 N/A*
NBPD0121 Camera Pod 120 November 2017 November 2019 N/A*
NBPD0122 Sensor Pod 120 October 2017 October 2019 N/A*
NBPD0180 Sensor Pod 180 April 2019 TBD N/A
NBCN1000 NetBotz Central September 2004 September 2006 StruxureWare Data Center Expert
*V2 Sensors (PS/2 connection) are only supported when they are integrated into a supported version 3 appliance (models: 355, 455, 450, & 570) utilizing a sensor POD 120.

Information on current appliances and compatibility/specifications can be found in knowledge base FA256261.
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