Model: 61255

Thumbscrew

Special Features:

3rd shoulder 0.148 in. Diameter by 0.029 in. Lg, 4th shoulder 0.188 in. Diameter by 0.031 in. Lg

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.450 inches
Fastener Length
0.770 inches
Head Style
Thumb no. 1
Head Height
0.200 inches
Width Between Flats
0.500 inches
Point Style
Flat
Thread Diameter
0.138 inches
Thready Qty Per Inch (tpi)
32
Shoulder Shape
Round all shoulders
Material
Steel comp 303se
Material Specification
Mil-s-18732 military specification single material response
Thread Series Designator
Unc
NSN
5305-00-061-1987
Part Number
61255
Description
Thumbscrew
CAGE
08198

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 61255 NSN 5305-00-061-1987

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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