Model: 0N634257-1

Panel Screw Assembly

Properties:

Thread Class
2a
Thread Direction
Right-hand
Thread Length
0.203 inches
Fastener Length
Between 0.525 inches and 0.545 inches
Head Style
Flat countersunk
Head Diameter
0.317 inches
Internal Drive Style
Cross recess type 1
End Application
Kg-75
Material Accommodated Thickness
Between 0.090 inches and 0.125 inches
Thread Diameter
0.138 inches
Thready Qty Per Inch (tpi)
32
Countersink Angle
Between 99.0 degrees and 101.0 degrees
Part Name Assigned By Controlling Agency
Screw, captive
Material
Iron alloy 660 fastener
Material
Steel comp 304 stand-off
Surface Treatment
Passivate fastener
Surface Treatment
Passivate stand-off
Thread Series Designator
Unc
NSN
5305-01-477-9252
Part Number
0N634257-1
Description
Screw Assembly,panel
CAGE
98230

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 0N634257-1 NSN 5305-01-477-9252

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:
A
ESD:
A
MMAC:
CS
CRITL:
X

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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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