Thumbscrew
239-115
(NSN) National Stock Number
5305-00-313-3020
Federal Supply Classification
5305 Screws
Item Name Code
06673
Schedule B Code
7318152000
Summary
2a thread class, right-hand thread direction, 0.250 inches minimum thread length, 1.188 inches nominal fastener length, knurled no. 4 head style, 1.000 inches nominal head diameter
| DAC | HCC | DMIL | RNCC |
|---|---|---|---|
| 4 | - | - | 3 |
| RNVC | SADC | MSDS | RNAAC |
|---|---|---|---|
| 9 | - | - | 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
0.250 inches minimum
Details
A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.Fastener Length
1.188 inches nominal
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
knurled no. 4
Details
The style designation indicating the configuration that most nearly corresponds to the appearance of the head.Head Diameter
1.000 inches nominal
Details
The length of a straight line which passes through the center of a circular head,and terminates at the circumference.Head Height
0.250 inches nominal
Details
A measurement from the bottom to the top of the head,in distinction from depth.Shoulder Diameter
0.375 inches nominal first shoulder
Details
The length of a straight line which passes through the center of the shoulder and terminates at the circumference.Shoulder Length
0.375 inches nominal first shoulder
Details
The length of the enlarged portion of the shank on the item,in distinction from width or diameter.Point Length
0.094 inches nominal
Details
A measurement of the longest dimension of the point,in distinction from width.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
28
Details
The number of threads on the item per linear inch measured on a line parallel to the thread axis.Point Chamfer Angle
45.0 degrees nominal
Details
None. replaced by mrc csyt with isac 0368.Shoulder Shape
round first shoulder
Details
The physical configuration of the unthreaded portion of a body adjacent to the head which is larger than the diameter of the shank.Material
steel comp 416 overall
Details
The chemical compound or mechanical mixture properties of which the item is fabricated.Surface Treatment
chromate zinc threads
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
chromium head
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.Thread Series Designator
unf
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 |
|---|---|---|---|---|---|---|---|
| BA19917 | 70408 | 5 | - | 5 | 9 | - | 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
FAQs
Frequently asked questions for NSN 5305-00-313-3020
What is the NIIN of the NSN 5305-00-313-3020?
The National Item Identification Number (NIIN) of the NSN 5305-00-313-3020 is 00-313-3020
When the NSN 5305-00-313-3020 was assigned to the Federal Catalog?
It was assigned 61 years ago, on Tue, Jan 1, 1963
Does the NSN 5305-00-313-3020 contain any precious metals?
Type/content is unknown
Does the NSN 5305-00-313-3020 contain any hazardous material?
No data in HMIRS
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