Model: 253476-2

Panel Screw Assembly

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.500 inches
Fastener Length
1.125 inches
Head Style
Hexagon
Head Height
Between 0.232 inches and 0.237 inches
Width Between Flats
Between 0.367 inches and 0.375 inches
Internal Drive Style
W/o internal drive
Material Accommodated Thickness
Between 0.093 inches and 0.140 inches
Thread Diameter
0.250 inches
Thready Qty Per Inch (tpi)
28
Min. Tensile Strength (psi)
140000 pounds per square inch
Material
Stainless steel fastener
Material
Stainless steel stand-off
Material Specification
Ams5732 federal specification single material response fastener
Material Specification
Mil-s-23195 federal specification single material response stand-off
Surface Treatment
Cadmium fastener
Surface Treatment
Cadmium stand-off
Surface Treatment Specification
Qq-p-416 tii c2 federal specification single treatment response stand-off
Surface Treatment Specification
Qq-p-416tii c2 federal specification single treatment response fastener
Thread Series Designator
Unf
NSN
5305-01-433-5500
Part Number
253476-2
Description
Screw Assembly,panel
CAGE
82577

A headed, threaded fastening device over which may be assembled; (1) a stand-off; (2) a flanged bushing with washer(s) and/or a shouldered bushing without a flange, or it may have an internally threaded sleeve that is an integral part of the screw; a washer and an externally thread self-locking bushing that is driven by an inserted driver. Attached to panel by threaded bushing or by flaring end of stand-off, or bushing. Used in conjunction with a speed nut, nut plate, or driven into a threaded hole in the item that the panel is fastened to. May be spring loaded.

Part 253476-2 NSN 5305-01-433-5500

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
33044
FIIG:
A003B0
Concept No.:
App. Key:
SU
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: 7318152000
  • SITC: 69421
  • End Use: Iron and steel products, other
  • NAICS: 332722
  • USDA: 1

Freight Class: Bolts and bolts and their nuts or washers exported in the same shipment

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