Model: 1943386

Tapping Screw

Properties:

Fastener Length
Between 0.250 inches and 0.280 inches
Head Style
Hexagon extended washer
Head Height
Between 0.160 inches and 0.174 inches
Width Between Flats
Between 0.244 inches and 0.250 inches
Extended Washer Diameter
Between 0.370 inches and 0.388 inches
Extended Washer Thickness
Between 0.035 inches and 0.045 inches
Internal Drive Style
Slot
Nonmachine Thread Style
Dog type (type b or c)
Nonmachine Thread Diameter
0.164 inches
Material
Steel
Surface Treatment
Cadmium and dichromate
NSN
5305-00-451-3425
Part Number
1943386
Description
Screw,tapping
CAGE
1LW55

A hardened externally threaded fastener whose thread extends to the bearing surface of the head. The thread may be fluted or otherwise designed to cut or form its own mating thread. Excludes screw, assembled washer.

Part 1943386 NSN 5305-00-451-3425

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
41756
FIIG:
A003B0
Concept No.:
App. Key:
SN
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:
N
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
50.0
WCC:
713
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7318140000
  • SITC: 69421
  • End Use: Iron and steel products, other
  • NAICS: 332722
  • USDA: 1

Freight Class: Self-tapping screws of iron or steel

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