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Datasheet. 78A109 specification
The length of a straight line which passes through the center of a hole,and terminates at the circumference.
0.169in. and 0.174in. ⁓3/16"
The length of a straight line which passes through the center of a circular figure or body,and terminates at the outside circumference.
0.280in.
0.094in.
0.288in.
0.093in.
0.703in.
A measurement of the smallest dimension of the material,in distinction from length or width.
0.036in.
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.
3 external keys; peening key 0.187 in. wide
The chemical compound or mechanical mixture properties of which the item is fabricated.
steel
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.
cadmium or nickel
The specification,standard,or manufacturers reference,and the classification designation,such as type,class,grade,and the like,that identifies the surface treatment material.
M-S 284-154, fscm 96152 mfr ref 1st treatment response or M-S 284-151, fscm 96152 mfr ref 2nd treatment response
The style designation indicating the configuration that most nearly corresponds to the appearance of the item.
key
Answers.
Key
Steel
0.036 inches
0.280 inches
0.169 inches minimum and 0.174 inches maximum
Schedule B number: 7318220000
Washers other than lock washers, iron or steel
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 5310-00-400-7764 WASHER,KEY
key cadmium or nickel surface treated 3 external keys; peening key 0.187 in. wide 0.036" material thickness 0.280" outside diameter 0.169" hole diameter
- NIIN
- 004007764
- NIIN Date
- 11/14/69
- Schedule B
- 7318220000
- Name Code
- 01869
- 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
- - Singapore
- - New Zealand
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78A109 / 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.
