Model: 20-234

Tapping Screw

Properties:

Fastener Length
Between 0.350 inches and 0.380 inches
Head Style
Hexagon extended washer
Head Height
Between 0.124 inches and 0.151 inches
Width Between Flats
Between 0.305 inches and 0.312 inches
Extended Washer Diameter
Between 0.384 inches and 0.414 inches
Extended Washer Thickness
Between 0.019 inches and 0.031 inches
Internal Drive Style
Slot
Nonmachine Thread Style
Dog type (type b or c)
Nonmachine Thread Diameter
0.190 inches
Material
Steel
Surface Treatment
Chromate
Surface Treatment Specification
12540460, fsc-31211 mfr ref single treatment response
NSN
5305-01-222-3287
Part Number
20-234
Description
Screw,tapping
CAGE
31211

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 20-234 NSN 5305-01-222-3287

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:
A
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
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:
E
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
--
WCC:
573
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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