Model: 21-174-4

Electrical Contact

Properties:

Point Diameter
Any acceptable
Overall Length
0.781 inches
Overall Height
Any acceptable
Overall Width
0.312 inches
Unthreaded Mounting Hole Diameter
0.201 inches
Mounting Facility Quantity
1
Voltage Rating In Volts
250.0 dc
Point Height
0.119 inches
Current Rating In Amps
50.0
Mounting Method
Unthreaded hole
Material
Copper alloy body
Material
Silver contact
Precious Material And Location
Contact silver
Precious Material And Weight
0.005 silver grains, troy
Precious Material
Silver
Surface Treatment
Any acceptable contact
Surface Treatment
Any acceptable body
Style Designator
A28c flat leaf contact w/ round fixed point
Style Designator
Flat leaf contact w/ round fixed point
NSN
5999-00-257-5749
Part Number
21-174-4
Description
Contact,electrical
CAGE

An item consisting of an electrically conductive material designed to furnish a surface which will physically and electrically meet another conducting surface for the purpose of transferring electrical energy and/or opening and closing circuits. Includes moving contacts which make and/or slide over stationary contacts or other stationary conductive material to a resulting fixed position. Excludes items which are used in conjunction with continually moving surfaces or which make contact by gripping action of the contact surfaces. See also clip, electrical; clamp, electrical; brush, electrical contact; plug, tip; and jack, tip.

Part 21-174-4 NSN 5999-00-257-5749

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
00443
FIIG:
A222A0
Concept No.:
App. Key:
A
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:
S
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
--
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
061300
UFC:
34410
LTL:
77.5
LCL:
--
WCC:
72D
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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Schedule B and Export
  • Schedule B: 8538907040
  • SITC: 77282
  • End Use: Electric apparatus
  • NAICS: 335931
  • USDA: 1

Freight Class: Electrical metal contacts for heading 8535, 8536 & 8537

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