SM-B-208666-1 & -2

SMB20866612 Thumbscrew

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Quality Commitment

Serving our customers with quality and safety first.

  •   AS9120 Certified
  •   Audited supply chain
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AS9120 Certified by SAI Global

Datasheet. SM-B-208666-1 & -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.

0.453in. and 0.516in. ⁓33/64"

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.

2.281in. and 2.312in. ⁓2-5/16"

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.

0.859in. and 0.891in. ⁓57/64"

Width Between Flats

1.046in. and 1.078in.

First Diameter From Head

0.170in. and 0.180in.

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

1.796in. and 1.828in.

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

cone

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

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

steel comp 304

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.

QQ-S-763 fed spec 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.

passivate

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-35 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 quantity is this sold in?

1EA

What class is the thread series?

Unc

What material is the thumbscrew made of ?

Steel comp 304

What is the thread quantity per inch?

20

What is the head style?

Thumb no. 3

What is the thread length?

0.453 inches minimum and 0.516 inches maximum

What is the thread direction?

Right-hand

What is the thread class?

2a

What is the NSN for SM-B-208666-1 & -2?

5305-00-008-7868

How is this classified for shipping?

Schedule B number: 7318152000
nmfc 093486
Bolts and bolts and their nuts or washers exported in the same shipment

What's the federal classification of SM-B-208666-1 & -2?

FSC 5305 ⁓ Screws

NSN 5305-00-008-7868 THUMBSCREW

unc thread series passivate surface treated 20 thread quantity per inch thumb no. 3 head style 0.453" thread length right-hand 2a thread class

NIIN
000087868
NIIN Date
07/23/72
Schedule B
7318152000 
Name Code
06673
FIIG
A003B0
Item Weight
0.100lbs
Item Dimensions
--
QUP
Historical Price
$354.50 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

Other Part Numbers Parts with same form, fit, and function by other manufacturers

1. SMB208666 Cage 80063

Major End Users Countries and entities

  • - Department of The Army 
  • - Department of The Air Force 
  • - Department of The Navy 
  • - Canada 
  • - New Zealand 
  • - Germany 

Availability for SM-B-208666-1 & -2 A member of our team will provide you with a price and availability quote

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Shipping Information

Special Handling
Other or no special handling required (sh) 
LTL (less than a truck load rating)
Rating variable 
LCL (less than a car load rating)
Unknown
Special Cargo
No special type of cargo code applicable 
Air Freight (Minimum cargo door size required)
Shipment is not a consolidation and does not exceed 84 inches in any dimension. 
Customs Requirement Classification
Construction materials: includes paint and related materials, prefabricated building, wood products, metal and composition mater 
Commodity (for shipments via water)
Metal hardware 
NMFC (national motor freight code)
093486 BOLTS,NUTS OR SCREWS, NOI (SUB 3) 
UFC (universal freight code)
48950 

Similar by Design Other thumbscrews with similar characteristics

Nothing similar to this part number was found in our inventory

SM-B-208666-1 & -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).