Nylon Non-Conductive Lockout Hasp
- Item #:
- C3504-428
- Compliance:
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- OSHA
Other configurations of this product

Master Lock Part# 428. This non-conductive lockout hasp has a spark proof nylon construction with openings for up to 6 padlocks to help keep workers safe. Its dimensions are 1-5/8" x 6-7/8" (41 x 174 mm), with an inside jaw opening of 1" x 2-1/2" (25 x 64 mm).
1 × 2½″ Jaw
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Material | Sku | Quantity/Price | |||
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Nylon | C3504-428 | $5.55 | $5.35 | $5.15 |
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.
Phone: 800-274-6271
Fax: 800-279-6897
Phone: 800-274-6271
Fax: 800-279-6897
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Recommended Accessories
- All
- Aluminum Padlocks
- Plastic Padlocks
- Steel Padlocks
Product Image | ![]() |
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SafetySign Part#: | C3504 | |
Master Lock Part#: | 428 | |
Hasp Jaw Size: | 1″ x 2½″ (25mm and 64mm) | |
Hasp Dimensions: | 1⅝″ x 6⅞″ (41mm x 174mm) | |
Max. Number of Padlocks: | 6 padlocks | |
Max. Padlock Shackle Diameter: | 9/32″ (7mm) | |
Material: | Spark proof non-conductive nylon | |
Benefits: | Keeps equipment inoperative while repairs or adjustments are being made | |
Lockout by multiple workers at each lockout point | ||
Lockout Function: | Control cannot be turned on until last worker's safety padlock is removed from hasp | |
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 | ![]() |