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Heyco® Threaded Vent Plugs

Open vent holes only

  • Part Numbers and Specifications
  • Features
THREAD PART NO. DESCRIPTION PART DIMENSIONS CAD
Type/Size Black Gray A
Wrenching Flats
B
Overall
Length
in. mm. in. mm.

NPT

NPT 1/4 3551B 3551 TVP NPT 1/4 .63 16,0 .66 16,8 CAD
NPT 3/8 3552B 3552 TVP NPT 3/8 .83 21,0 .69 17,5 CAD
NPT 1/2 3553B 3553 TVP NPT 1/2 .98 24,9 .81 20,6 CAD
NPT 3/4 3554B 3554 TVP NPT 3/4 1.29 32,8 .86 21,8 CAD

PG - PG Thread Specifications

Pg 7 3566B 3566 TVP Pg 7 .63 16,0 .53 13,5 CAD
Pg 9 3567B 3567 TVP Pg 9 .83 21,0 CAD
Pg 13.5 3568B 3568 TVP Pg 13.5 .98 24,9 .62 15,8 CAD
Pg 21 3569B 3569 TVP Pg 21 1.29 32,8 .76 19,3 CAD

Metric

M12 3557B 3557 TVP M12 .63 16,0 .53 13,5 CAD
M16 3558B 3558 TVP M16 .83 21,0 CAD
M20 3559B 3559 TVP M20 .98 24,9 .62 15,8 CAD

Standard color Black. Consult Heyco for other colors.

  • Permit the passage of air for ventilation and heat dissipation.
  • Quick and easy installation into Threaded Holes.
  • For multiple thread sizes and types.
  • All sizes and types feature seven (7) .094˝ (2,4 mm) diameter vent holes.
  • Threaded plugs for hydraulic and pneumatic applications.
  • Lower cost option over brass or steel plugs.
  • Non-corrosive-resist salt water, weak acids, gasoline, alcohol, oil, grease and common solvents. Resist oil and heat up to 221°F (105°C).
  • Approximate Head Thickness: .21˝ (5,3 mm). Thickness may vary.
  • Hex shaped head for wrench installation.
  • Electrically non-conductive Nylon 6/6.
  • View Liquid Tight Threaded Vent Plugs.

QuickSpecs

Material Nylon 6/6 bodies with UL (f1) rating
Flammability Rating 94V-2
Temperature Range -40°F (-40°C) to 221°F (105°C)
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