Model: 52921N-4-8+

Fire Protection Sprinkler Head

Special Features:

Halon 1301; 4 orifice holes; on a 90 degree 1.380 inch hex head; length 2.130 inch; drill size 8-4.700 inch

Properties:

Integral Strainer
Not included
Head Type
Spray
Connection Thread Size
1 in.-11 1/2
Connection Thread Location
External
Connection Thread Series
Npt
Spray Angle Pattern
360.0 degrees
Material
Steel, corrosion resisting
Material
Stainless steel
Media For Which Designed
Bromotrifluoromethane
Special Test Features
Shock test- gr-a, class 1, ty-a, medium weight-mil-s-901; vibration test- ty-1-mil-std-167/1; salt spray test, method 509-mil-std-810
NSN
4210-01-288-0864
Part Number
52921N-4-8+
Description
Head,sprinkler,fire Protection
CAGE

An automatic device specifically designed for the discharge of water, chemical powder/foam, or vaporizing liquid in a sprayed, fogged, or directionalized patterns. Normally used in fixed fire protection systems.

Part 52921N-4-8+ NSN 4210-01-288-0864

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
03948
FIIG:
T278-N
Concept No.:
App. Key:
NA
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
P
PMIC:
A
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
056800
UFC:
32480
LTL:
150.0
LCL:
--
WCC:
796
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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Schedule B and Export
  • Schedule B: 8424909500
  • SITC: 74568
  • End Use: Industrial machines, other
  • NAICS: 333912
  • USDA: 1

Freight Class: Parts, nesoi, of mechanical appliances for projecting, dispersing or spraying liquids or powders; of fire extinguishers; of spray guns

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