Model: 31859

Tapping Screw

Properties:

Fastener Length
0.500 inches
Head Style
Hexagon extended washer
Head Height
0.141 inches
Width Between Flats
0.250 inches
Extended Washer Diameter
0.406 inches
Extended Washer Thickness
0.025 inches
Internal Drive Style
Slot
End Application
General application hardware (gen-ap-h)
Features Provided
Casehardened
Nonmachine Thread Style
Gimlet point (type a, ab or ba)
Nonmachine Thread Diameter
0.164 inches
Material
Steel
Surface Treatment
Chromate
NSN
5305-01-145-7083
Part Number
31859
Description
Screw,tapping
CAGE
05573

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 31859 NSN 5305-01-145-7083

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:
N

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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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