Pneumatic Lockout - C3111, Pneumatic Lockouts by

Pneumatic Lockout

For use with male fittings
Pneumatic Lockout
Item #:
  • OSHA
Other configurations of this product
For use with 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", and 13/16" male fittings.
Pricing C3111-S3900
Price Each:
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Total Price: $22.80
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Special freight arrangements are necessary. Learn more
Master Lock Part# S3900. This pneumatic lockout device is made of stainless steel for corrosion resistance and will fit virtually all male pneumatic fittings; 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", and 13/16". Up to 6 pneumatic devices can be locked out at the same time using this device. It works by preventing the pneumatic fitting from being connected to a pressurized air source, thus preventing the machine from being operated. The device measures 1-3/8" wide x 7-3/4" tall x 1/8" thick (33 x 185 x 3.2 mm) and will accept up to 2 padlocks with a maximum shackle diameter of 9/32" or lockout hasps. All Master Lock and American Lock safety padlocks will fit this device, as well as any hasp.
1-3/8 × 7¾″
Material Sku Quantity/Price
1–5 6–11 12+
Stainless Steel C3111-S3900 $22.80 $21.90 $21.00
Special Freight Arrangement: Due to the size of this product, freight shipping will be required. You may contact our customer service team for a quote or you can place your order and a customer service representative will contact you about freight shipping charges. If you would like to use your own freight carrier, please include your freight carrier account in the special instructions box at the bottom of the checkout page before placing your order. A customer service representative will be in contact with you if there are any questions.

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Master Lock Pneumatic Lockout

Product Image Master Lock Pneumatic Lockout S3900 C3111
SafetySign Part#: C3111
Master Lock Part#: S3900
Fits Male Fitting Sizes: ¼″, 5/16″, ⅜″, 7/16″, ½″, 9/16″, ⅝″, 13/16″
Max. Number of Padlocks: 2 padlocks or hasps
Max. Padlock Shackle Diameter: 9/32″ (7mm)
Size: 1⅜″ wide × 7¾″ tall × ⅛″ thick (33mm × 185mm × 3.2mm)
Weight: 0.15 lb
Material: Stainless steel
Benefits: Can lockout up to 6 pneumatic devices
For use with virtually all male fittings
Stainless steel construction for corrosion resistance
Lockout Function: Prevents pneumatic fitting from being connected to pressurized air source
OSHA 1910.147(b) Compliance: Capable of being locked out. An energy isolating device is capable of being locked out if it has a hasp or other means of attachment to which, or through which, a lock can be affixed, or it has a locking mechanism built into it. Other energy isolating devices are capable of being locked out, if lockout can be achieved without the need to dismantle, rebuild, or replace the energy isolating device or permanently alter its energy control capability.
Application: Pneumatic Lockout Application

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