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Datasheet. NAS391-4P specification
The length of a straight line which passes through the center of a circular figure or body,and terminates at the outside circumference.
0.365in. and 0.385in.
The distance measured in a straight line from the bottom to the top of an item.
0.076in. and 0.096in.
A measurement of the smallest dimension of the material,in distinction from length or width.
0.008in. and 0.016in.
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.
MIL-S-7952 mil spec 1st material response or QQ-S-636 fed spec 1st material response or QQ-B-611 fed spec 2nd material response
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.
chromium
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-P-6871, type 1 mil spec single treatment response
The style designation indicating the configuration that most nearly corresponds to the appearance of the item.
finishing
The document designator of the specification or standard which established the item of supply.
80205-NAS391 professional/industrial association standard
Answers.
Finishing
0.008 inches minimum and 0.016 inches maximum
0.365 inches minimum and 0.385 inches maximum
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 5310-01-063-9117 WASHER,FINISHING
finishing chromium surface treated 0.008" material thickness 0.365" outside diameter
- NIIN
- 010639117
- NIIN Date
- 08/14/78
- Schedule B
- Name Code
- 15932
- 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
- - Canada
- - Republic of Korea
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NAS391-4P / Washer,finishingWhat is the formal definition of this item?
A washer or cone or disk shape with a centrally located hole, designed to accommodate a flat or oval head screw and provide additional bearing area on the material being fastened. it may or may not have a flush flange feature.
