TW 121

TW121 Key Washer

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Quality Commitment

Serving our customers with quality and safety first.

  •   AS9120 Certified
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AS9120 Certified by SAI Global

Datasheet. TW 121 specification

Hole Diameter
The length of a straight line which passes through the center of a hole,and terminates at the circumference.

4.801in. and 4.831in. ⁓4-27/32"

Outside Diameter
The length of a straight line which passes through the center of a circular figure or body,and terminates at the outside circumference.

5.688in. and 5.733in.

Internal Prebent Key Length

0.250in. and 0.313in.

External Prebent Key Width

0.360in. and 0.390in.

Internal Prebent Key Width

0.313in. and 0.353in.

Overall Distance Including Keys

6.469in.

External Key Quantity

19

Material Thickness
A measurement of the smallest dimension of the material,in distinction from length or width.

0.165in.

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

steel

Style Designator
The style designation indicating the configuration that most nearly corresponds to the appearance of the item.

key

Answers.

What quantity is this sold in?

1EA

What is the style?

Key

What material is the key washer made of ?

Steel

What is the thickness?

0.165 inches

What is the outside diameter?

5.688 inches minimum and 5.733 inches maximum

What is the inside hole diameter?

4.801 inches minimum and 4.831 inches maximum

What is the NSN for TW 121?

5310-00-787-4556

How is this classified for shipping?

Schedule B number: 7318220000
nmfc 194160
Washers other than lock washers, iron or steel

What's the federal classification of TW 121?

FSC 5310 ⁓ Nuts and washers

Note-nuts and washers, including specially designed, are to be classified in this fsc. a. nuts are a small metal block made in a variety of shapes such as square and hexagonal which is drilled and internally threaded. b. washers are a perforated piece of metal, leather, or other materials of various shapes or forms. they are used primarily as a seat for a bolt, nut, screw, rivet or nail to distribute pressure and prevent endwise motion over an area and/or to prevent movement between two parts by means of restraining features created by the shape of its edges.

Excluding bearing thrust washers (fsc 3120); shims (fsc 5365); ring spacers (fsc 5365); plate spacers (fsc 5365); lock rings (fsc 5365).

NSN 5310-00-787-4556 WASHER,KEY

key 0.165" material thickness 5.688" outside diameter 4.801" hole diameter

NIIN
007874556
NIIN Date
01/01/62
Schedule B
7318220000 
Name Code
01869
FIIG
A022B0
Item Weight
0.000lbs
Item Dimensions
--
QUP
Historical Price
$9.20 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. TW 124 Cage D9182
2. 999-51124-0000 Cage 96906
3. 600307PC15 Cage 70487
4. 1004131-37 Cage 75394
5. 1004705-1 Cage 75394
6. 600307PC15 Cage 03966
7. TW124 Cage 60038
8. W124 Cage 60038

Major End Users Countries and entities

  • - Department of The Army 
  • - Department of The Navy 

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Shipping Information

Special Handling
Other or no special handling required (sh) 
LTL (less than a truck load rating)
50.0 
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
Trailers, vehicles, machinery, shop and warehouse equipment and supplies including special tools and equipment, ground servicing 
Commodity (for shipments via water)
Bolts or nuts (iron or steel),(less than 35 feet) 
NMFC (national motor freight code)
194160 WASHER OR GASKETS, IRON OR STEEL, 
UFC (universal freight code)
55210 

Similar by Design Other washers with similar characteristics

Nothing similar to this part number was found in our inventory

TW 121 / Washer,keyWhat is the formal definition of this item?

A washer of nonresilient material usually having two parallel bearing surfaces. the outside and/or inside edges have one or more protuberances. the ends and/or edges may be prebent at any angle or the protuberances may be prebent at any angle to the bearing surfaces. the keys or lugs may be fitted into keyways in adjacent material or they may be bent over after application to hold or lock one or more items in place. excludes thrust type washer.