Model: 21T03-1-12-2AA

Panel Screw Assembly

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.295 inches and 0.325 inches
Fastener Length
Between 0.730 inches and 0.770 inches
Head Style
Knurled no. 3
Head Diameter
0.340 inches
Head Height
0.300 inches
Internal Drive Style
Slot
Material Accommodated Thickness
0.048 inches
Thread Diameter
0.190 inches
Thready Qty Per Inch (tpi)
32
Material
Aluminum alloy 7075 stand-off
Material
Steel fastener
Material Specification
18-8, 300 series federal standard all material responses fastener
Material Specification
Qq-a-225/9 federal specification single material response stand-off
Surface Treatment
Chromate stand-off
Surface Treatment
Passivate fastener
Surface Treatment Specification
Mil-c-5541 cl3 military specification single treatment response stand-off
Surface Treatment Specification
Qq-p-35 federal specification single treatment response fastener
Thread Series Designator
Unf
NSN
5305-01-410-6628
Part Number
21T03-1-12-2AA
Description
Screw Assembly,panel
CAGE
71286

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 21T03-1-12-2AA NSN 5305-01-410-6628

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

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
096640
UFC:
50600
LTL:
70.0
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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