SM-C-852090-2

SMC8520902 Thumbscrew
Home » Catalog » Fasteners (p. 4153) » Thumbscrews (p. 21) » Part Number SM-C-852090-2

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Datasheet. SM-C-852090-2 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.

0.380in. ⁓25/64"

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.

1.810in. ⁓1-13/16"

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

knurled no. 1

Head Diameter
The length of a straight line which passes through the center of a circular head,and terminates at the circumference.

0.980in. and 1.020in.

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

0.250in. ⁓1/4"

Shoulder Diameter
The length of a straight line which passes through the center of the shoulder and terminates at the circumference.

0.500in. first shoulder

Shoulder Length
The length of the enlarged portion of the shank on the item,in distinction from width or diameter.

0.250in. first shoulder

First Diameter From Head

0.170in. and 0.175in.

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

1.180in.

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

Externally Relieved Body Diameter Quantity
The number of externally relieved diameters on the body,adjacent to the head.

1

Shoulder Shape
The physical configuration of the unthreaded portion of a body adjacent to the head which is larger than the diameter of the shank.

round first shoulder

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.

color black

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

steel comp 303

Material Document And Classification
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.

astm A582 assn std single material response

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.

oxide

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.

MIL-C-13924 cl 4 mil 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 303

What is the thread quantity per inch?

20

What is the head style?

Knurled no. 1

What is the thread length?

0.380 inches

What is the thread direction?

Right-hand

What is the thread class?

2a

What is the NSN for SM-C-852090-2?

5305-01-160-1981

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 SM-C-852090-2?

FSC 5305 ⁓ Screws

NSN 5305-01-160-1981 THUMBSCREW

unc thread series oxide surface treated color black 20 thread quantity per inch knurled no. 1 head style 0.380" thread length right-hand 2a thread class

NIIN
011601981
NIIN Date
08/19/83
Schedule B
7318152000 
Name Code
06673
FIIG
A003B0
Item Weight
0.000lbs
Item Dimensions
--
DEMIL / ITAR
Uncontrolled item (Code A)
Hazmat
No hazard information available from HMIRS.
MSDS
N/A
Precious Metals
No precious metals
Enviromental
N/A
Electrostatic ESD & EMI
No ESD or EMI sensitivity

Major End Users Countries and entities

  • - Canada 

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Similar by Design Other thumbscrews with similar characteristics

Nothing similar to this part number was found in our inventory

SM-C-852090-2 / 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).