Model: A25-3-183

Thumbscrew

Properties:

Thread Class
2a
Thread Direction
Right-hand
Thread Length
0.813 inches
Fastener Length
1.563 inches
Head Style
Knurled no. 1
Head Diameter
0.625 inches
Head Height
0.125 inches
Point Length
0.625 inches
Point Diameter
0.172 inches
Point Style
Chamfer dog
Thread Diameter
0.250 inches
Thready Qty Per Inch (tpi)
28
Point Chamfer Angle
9.0 degrees
Material
Steel
Material Specification
Qq-s-633 federal specification single material response
Surface Treatment
Cadmium
Surface Treatment Specification
Qq-p-416, type 1, class 1 federal specification single treatment response
Thread Series Designator
Uns
NSN
5305-00-779-5921
Part Number
A25-3-183
Description
Thumbscrew
CAGE
81361

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 A25-3-183 NSN 5305-00-779-5921

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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