Model: 53-99-231-24

Panel Screw Assembly

Properties:

Thread Class
2a
Thread Direction
Right-hand
Thread Length
Between 0.355 inches and 0.395 inches
Fastener Length
Between 1.240 inches and 1.260 inches
Head Style
Hexagon
Head Height
Between 0.240 inches and 0.260 inches
Width Between Flats
Between 0.425 inches and 0.438 inches
Internal Drive Style
Slot
Material Accommodated Thickness
Between 0.115 inches and 0.135 inches
Thread Diameter
0.190 inches
Thready Qty Per Inch (tpi)
32
Material
Stainless steel fastener
Material
Stainless steel spring
Material
Stainless steel stand-off
Material Specification
Fed-std-66 federal standard single material response fastener
Material Specification
Fed-std-66 federal standard single material response spring
Material Specification
Fed-std-66 federal standard single material response stand-off
Surface Treatment
Passivate fastener
Surface Treatment
Passivate spring
Surface Treatment
Passivate stand-off
Surface Treatment Specification
Qq-p-35, type 2 federal specification single treatment response fastener
Surface Treatment Specification
Qq-p-35, type 2 federal specification single treatment response stand-off
Surface Treatment Specification
Qq-p-35, type 2 federal specification single treatment response spring
Thread Series Designator
Unf
NSN
5305-01-164-4481
Part Number
53-99-231-24
Description
Screw Assembly,panel
CAGE
94222

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 53-99-231-24 NSN 5305-01-164-4481

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:
713
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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