Model: 1C6138P03

Thumbscrew

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.480 inches and 0.520 inches
Fastener Length
Between 1.720 inches and 1.760 inches
Head Style
Knurled no. 1
Head Diameter
Between 0.720 inches and 0.780 inches
Head Height
Between 0.360 inches and 0.400 inches
Shoulder Diameter
0.326 inches first shoulder and 0.328 inches first shoulder
Shoulder Length
0.980 inches first shoulder and 1.020 inches first shoulder
Point Style
Pointless
Thread Diameter
0.250 inches
Thready Qty Per Inch (tpi)
28
Hardness Rating
30.0 rockwell c and 36.0 rockwell c
Shoulder Shape
Round first shoulder
Material
Steel comp 4130 or steel comp 4140
Material Specification
Sae assn standard all material responses
Thread Series Designator
Unf
NSN
5305-00-825-3446
Part Number
1C6138P03
Description
Thumbscrew
CAGE
07482

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 1C6138P03 NSN 5305-00-825-3446

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:
U
ESD:
ESD:
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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