401 Dixon Plated Iron Boss Clamp for Hose ID 3" and Hose OD from 3-48/64" to 4"



Boss Clamps



  • 4-bolt type with 4 gripping fingers and 2 clamp sections.
  • The bolts used in the Boss interlocking clamps are not standard bolts. They vary from standard bolts in their length, diameter, overall thread length and material hardness. These bolts can be retorqued, but it is not recommended that the bolts or clamps be reused, as they are designed for a single bend only.
  • Torque values for clamps are based on dry bolts. The use of lubricant on bolts will adversely effect clamp performance. Do not lubricate nuts and bolts. Recommended torque rating in ft. lbs.
  • Worn-out hose couplings can be dangerous. They should be checked regularly and replace when necessary. Each coupling user should review applications and add safety devices where indicated.
  • Note: Pressurized steam is an extremely dangerous commodity. Only hose, fittings, clamps and accessory items that have been approved for steam service should ever be used! Never use an unapproved item for steam service. Always follow the manufacturer's product recommendations for pressurized steam handling.


Part Number Material Hose ID Hose OD Torque Weight
      From: To:    
350* Zinc Plated Iron 2-1/2" 3-4/64" 3-32/64" 60 4.9100
BU34 Zinc Plated Iron 2-1/2" 3-6/64" 3-28/64" 60 4.1900
B34 Zinc Plated Iron 2-1/2" 3-32/64" 3-60/64" 150 6.9500
375* Zinc Plated Iron 3" 3-32/64" 3-48/64" 60 5.5400
BU35 Zinc Plated Iron 3" 3-32/64" 3-60/64" 150 7.4000
401* Zinc Plated Iron 3" 3-48/64" 4" 150 7.2800
B35 Zinc Plated Iron 3" 3-52/64" 4-4/64" 150 7.1700
418* Zinc Plated Iron 3" 4" 4-12/64" 200 10.1400
B39 Zinc Plated Iron 3" 4-4/64" 4-28/64" 200 9.4800
450* Zinc Plated Iron 3" 4-12/64" 4-32/64" 200 10.3400



* 4 Gripping Fingers and 4 Bolts


More Information
Part Number 401
Location No
Material No
Torque No
Application No
Hose ID No
Hose OD Range No
Number of Clamp Bolts No
Number of Clamp Sections No
Number of Gripping Fingers No
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