6181917

6181917 Flat Washer

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Datasheet. 6181917 specification

Cross-sectional Shape Style
The style designation indicating the configuration that most nearly corresponds to the cross-sectional shape of the item.

rectangular

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

4.340in. and 4.350in. ⁓4-23/64"

Peripheral Shape Style
The style designation indicating the configuration that most nearly corresponds to the peripheral shape of the item.

round

Center Hole Shape Style
The style designation indicating the configuration that most nearly corresponds to the shape of the center hole.

1 round

Thickness
A measurement of the smallest dimension of an item,in distinction from length or width.

0.310in. and 0.315in. ⁓21/64"

Overall Diameter
A measurement of the longest straight line across a circular cross-sectional plane.

5.750in. ⁓5-3/4"

Features Provided
Those features,not otherwise specified,which may be required for proper functioning of the item.

casehardened

Hardness Rating
A numeric value that reflects the hardness of an item when used in conjunction with a hardness rating scale.

40.0 rockwell c and 50.0 rockwell c

Surface Finish
Designates the specific surface roughness rating,representing the arithmetic average deviation of the surface from the meanline in profile.

64.0 microinches bottom

Surface Finish
Designates the specific surface roughness rating,representing the arithmetic average deviation of the surface from the meanline in profile.

64.0 microinches top

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

steel comp 1018 or steel comp 1020 or steel comp 1022

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-633, canc fed spec all material responses

Answers.

What material is the flat washer made of ?

Steel comp 1018 or steel comp 1020 or steel comp 1022

What is the inside hole diameter?

4.340 inches minimum and 4.350 inches maximum

What is the NSN for 6181917?

5310-00-618-1917

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 6181917?

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 5310-00-618-1917 WASHER,FLAT

4.340" hole diameter

NIIN
006181917
NIIN Date
01/01/63
Schedule B
7318220000 
Name Code
13393
FIIG
A022B0
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

  • - Austria 
  • - Greece 
  • - Turkey 

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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)
50.0
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)
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

6181917 / Washer,flatWhat is the formal definition of this item?

A washer having a centrally located hole with a solid or laminated cross-section and two flat parallel bearing surfaces. the hole must be 75 percent or less than the largest dimension and the bearing surface finish is greater than 32 microinch (0.8 micrometer). the thickness cannot exceed 25 percent of the largest outside dimension. when the largest outside dimension is less than 1/4 inch or 6mm, the thickness must be 0.006 inches (0.15mm) or greater and for items 1/4 inch (6mm) or larger, the thickness must be 0.016 inches (0.4mm) or greater. the maximum tolerance is applied to dimensions and used as a determining factor. items with separable lamination use shim. for items fabricated from ceramic or electrically rated materials by specification or industry standards use insulator (1), washer. excludes disk, valve, graphite impregnated and lubricated items.