Thumbscrew

FFT305

FFT305
(NSN) National Stock Number
5305-00-874-3990
Federal Supply Classification
5305 Screws
Item Name Code
06673
Schedule B Code
7318152000
Summary

2a thread class, right-hand thread direction, 1.838 inches minimum and 1.938 inches maximum thread length, 1.938 inches minimum and 2.062 inches maximum fastener length, thumb no. 3 head style, 0.560 inches minimum and 0.640 inches maximum head height

DAC HCC DMIL RNCC
4 - - 4
RNVC SADC MSDS RNAAC
1 - - KZ
Identification

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, splined or smoothed, 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).

INC FIIG Concept Condition
06673 A003B0 - 1
Specifications
Thread Class
2a
Details A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
Thread Direction
right-hand
Details The direction of the thread when viewed axially. a right-hand thread winds in a clockwise direction while a left-hand thread winds in a counterclockwise direction.
Thread Length
1.838 inches minimum and 1.938 inches maximum
Details A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.
Fastener Length
1.938 inches minimum and 2.062 inches maximum
Details The dimension,measured along a line parallel to the longitudinal axis,from the largest bearing surface of the fastener head to the extreme opposite end,or as specifically designated for other type fasteners.
Head Style
thumb no. 3
Details The style designation indicating the configuration that most nearly corresponds to the appearance of the head.
Head Height
0.560 inches minimum and 0.640 inches maximum
Details A measurement from the bottom to the top of the head,in distinction from depth.
Width Between Flats
0.480 inches minimum and 0.630 inches maximum
Details None.
Point Style
flat
Details The style designation indicating the configuration that most nearly corresponds to the appearance of the point.
Nominal Thread Diameter
0.250 inches
Details The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.
Thread Quantity Per Inch
20
Details The number of threads on the item per linear inch measured on a line parallel to the thread axis.
Material
steel overall
Details The chemical compound or mechanical mixture properties of which the item is fabricated.
Surface Treatment
cadmium overall and chromate overall
Details The metallic,nonmetallic,and/or chemical properties with which the item is plated,dipped,and/or coated.the treatment is designed to protect the surface(s) and cannot be wiped off.
Surface Treatment Document And Classification
qq-p-416,ty 2,cl 3 fed spec all treatment responses overall
Details The specification,standard,or manufacturers reference,and the classification designation,such as type,class,grade,and the like,that identifies the surface treatment material.
Thread Series Designator
unc
Details A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.
Master-Cross Reference List
Part CAGE DAC HCC RNCC RNVC MSDS RNAAC
MS21316-38 96906 4 - 2 2 - KZ
Material and Special Handling
Hazardous material, precious metals, criticality, and electrostatic discharge indicators.
HMIC PMIC ESD/EMI Criticality
N U - -
Freight
Universal / National Freight and Handling Information
UFC HMC LTL LCL
48950 - W -
RVC WCC TCC SHC
- 713 Z 9

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Manufacturer
FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC
CAGE: 81348
NATL INSTITUTE STDS & TECH , MD , 20899
UNITED STATES
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FAQs
Frequently asked questions for NSN 5305-00-874-3990
What is the NIIN of the NSN 5305-00-874-3990?
The National Item Identification Number (NIIN) of the NSN 5305-00-874-3990 is 00-874-3990
When the NSN 5305-00-874-3990 was assigned to the Federal Catalog?
It was assigned 57 years ago, on Fri, Nov 10, 1967
Does the NSN 5305-00-874-3990 contain any precious metals?
Type/content is unknown
Does the NSN 5305-00-874-3990 contain any hazardous material?
No data in HMIRS

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