Model: 121-033-302

Thumbscrew

Special Features:

0.015 inch by 45 degree chamfer

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.365 inches and 0.385 inches
Fastener Length
Between 0.365 inches and 0.385 inches
Head Style
Knurled no. 5
Head Diameter
Between 0.437 inches and 0.457 inches
Head Height
Between 0.172 inches and 0.202 inches
Point Style
Flat
Thread Diameter
0.190 inches
Thready Qty Per Inch (tpi)
32
Part Name Assigned By Controlling Agency
Plain thumb screw
Material
Stainless steel
Thread Series Designator
Unf
NSN
5305-01-438-4311
Part Number
121-033-302
Description
Thumbscrew
CAGE
20747

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 121-033-302 NSN 5305-01-438-4311

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:
A
ESD:
A
MMAC:
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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