817847-1

8178471 Thumbscrew

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Datasheet. 817847-1 specification

Thread Class
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.

2a

Thread Direction
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.

RIGHT-Hand

Thread Length
A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.

0.400in. ⁓13/32"

Fastener Length
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.

1.355in. and 1.395in. ⁓1-13/32"

Head Style
The style designation indicating the configuration that most nearly corresponds to the appearance of the head.

thumb no. 3

Head Height
A measurement from the bottom to the top of the head,in distinction from depth.

0.625in. ⁓5/8"

Width Between Flats

1.000in.

First Diameter From Head

0.188in.

Distance From Largest Bearing Surface Of Head To End Of First Diameter

0.955in. and 0.995in.

Point Style
The style designation indicating the configuration that most nearly corresponds to the appearance of the point.

flat

Nominal Thread Diameter
The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.

0.250in. ⁓1/4"

Thread Quantity Per Inch
The number of threads on the item per linear inch measured on a line parallel to the thread axis.

20

Special Features
Those unusual or unique characteristics or qualities of an item not covered in the other requirements and which are determined to be essential for identification.

0.062 in. @min 0.065 in. max dia hole drilled in each wing of head 0.062 in. min 0.065 in. max dia hole drilled in unthreaded shank 0.250 in. from bearing surface of head

Material
The chemical compound or mechanical mixture properties of which the item is fabricated.

steel comp 1141

Surface Treatment
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.

cadmium and chromate

Surface Treatment Document And Classification
The specification,standard,or manufacturers reference,and the classification designation,such as type,class,grade,and the like,that identifies the surface treatment material.

QQ-P-416, ty 2, cl 3 fed spec single treatment response

Thread Series Designator
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.

unc

Answers.

What class is the thread series?

Unc

What material is the thumbscrew made of ?

Steel comp 1141

What is the thread quantity per inch?

20

What is the head style?

Thumb no. 3

What is the thread length?

0.400 inches

What is the thread direction?

Right-hand

What is the thread class?

2a

What is the NSN for 817847-1?

5305-01-022-1948

How is this classified for shipping?

Schedule B number: 7318152000
Bolts and bolts and their nuts or washers exported in the same shipment

What's the federal classification of 817847-1?

FSC 5305 ⁓ Screws

NSN 5305-01-022-1948 THUMBSCREW

unc thread series cadmium surface treated 0.062 in. @min 0.065 in. max dia hole drilled in each wing of head 0.062 in. min 0.065 in. max dia hole drilled in unthreaded shank 0.250 in. from bearing surface of head 20 thread quantity per inch thumb no. 3 head style 0.400" thread length right-hand 2a thread class

NIIN
010221948
NIIN Date
05/26/76
Schedule B
7318152000 
Name Code
06673
FIIG
A003B0
QUP
 
Historical Price
$211.85 EA
DEMIL / ITAR
Uncontrolled item (Code A)
Hazmat
No hazard information available from HMIRS.
MSDS
N/A
Precious Metals
Metal content unknown
Enviromental
N/A
Electrostatic ESD & EMI
No ESD or EMI sensitivity

Major End Users Countries and entities

  • - Portugal 

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Similar by Design Other thumbscrews with similar characteristics

Nothing similar to this part number was found in our inventory

817847-1 / ThumbscrewWhat is the formal definition of this item?

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).