Model: A3143451

Thumbscrew

Special Features:

Undercut beneath the head .303 x .088 in.

Properties:

Thread Class
2a
Thread Direction
Right-hand
Thread Length
0.912 inches
Fastener Length
1.000 inches
Head Style
Wing no. 2
Head Height
1.750 inches
Width Between Flats
1.690 inches
Thread Diameter
0.375 inches
Thready Qty Per Inch (tpi)
16
Material
Steel
Surface Treatment
Zinc and chromate
Surface Treatment Specification
Astm b633, type iii, class sci assn standard all treatment responses
Thread Series Designator
Unc
NSN
5305-01-392-8420
Part Number
A3143451
Description
Thumbscrew
CAGE
80063

An externally threaded fastener whose threaded portion is of one nominal diameter. It may have an unthreaded portion with a diameter less than, equal to, or greater than the diameter of the threaded portion. It has either a vertically flattened, circular knurled, or wing type head, all of which are designed for rotation by the thumb and fingers. For items having wrenching facilities such as socket recess, multiple spline or slot heads, use screw (as modified) or bolt (as modified).

Part A3143451 NSN 5305-01-392-8420

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
06673
FIIG:
A003B0
Concept No.:
App. Key:
SR
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:
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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