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Serving our customers with quality and safety first.
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Datasheet. KFN542-4S specification
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
3b
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
An element inserted into the fastener,or a design feature,that enables the fastener to effectively resist vibration and rotation.
FREE-Running all metal design
0.460in.
The length of a straight line which passes through the center of a counterbored portion of a hole,and terminates at the circumference.
0.283in. and 0.288in. nut
The distance measured in a straight line from the bottom to the top of an item.
0.280in.
The style designation indicating the configuration that most nearly corresponds to the appearance of the nut.
flat with turned up edge
The measurement of the enlarged portion adjacent to the threaded portion of a nut,in distinction from height.
0.087in. and 0.097in. nut
The shortest straight line between flats,perpendicular to the height.
0.306in. and 0.313in. ⁓21/64"
A value which expresses the degree of heat or cold as applied to the operation,or limitation of operation,of an item.
450.0 deg fahrenheit
A designation indicating the diameter-pitch combination and the number of threads per measurement scale applied to a series of diameters.
unjf
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
28
A numeric value that reflects the hardness of an item when used in conjunction with a hardness rating scale.
39.0 rockwell c and 43.0 rockwell c
A designation that is used for the purpose of general identification of the thread.
0.250in. ⁓1/4"
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.
washer rockwell c scale 40.0 min and 45.0 maxz use with K-Fast automatic tool
The chemical compound or mechanical mixture properties of which the item is fabricated.
steel comp E4340 or steel comp 4140 or steel comp 8740 nut
The chemical compound or mechanical mixture properties of which the item is fabricated.
steel washer
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.
MIL-S-5000 mil spec 1st material response or MIL-S-5626 mil spec 2nd material response or MIL-S-6049 mil spec 3rd material response nut
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 and chromate
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-416, ty 2, cl 2 fed spec single treatment response
Answers.
1EA
Steel washer
Steel comp e4340 or steel comp 4140 or steel comp 8740 nut
28
Right-hand
3b
Schedule B number: 7318160000
nmfc 194160
Nuts of 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 5310-01-221-7020 NUT,SELF-LOCKING,ASSEMBLED WASHE
cadmium surface treated washer rockwell c scale 40.0 min 28 thread quantity per inch right-hand 3b thread class
- NIIN
- 012217020
- NIIN Date
- 12/03/85
- Schedule B
- 7318160000
- Name Code
- 29736
- FIIG
- A021A0
- QUP
- 1
- Historical Price
- $1.23 EA
- DEMIL / ITAR
- Uncontrolled item (Code A)
- Hazmat
- No hazard information available from HMIRS.
- MSDS
- N/A
- Precious Metals
- No precious metals
- Enviromental
- N/A
- Electrostatic ESD & EMI
- No ESD or EMI sensitivity
Other Part Numbers Parts with same form, fit, and function by other manufacturers
Major End Users Countries and entities
- - Department of The Air Force
- - Spain
- - Malaysia
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- 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
- Supplies and equipment for aircraft and aerial targets, including aircraft and maintenance parts, aircraft accessories, aircraft
- 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 nuts with similar characteristics
Nothing similar to this part number was found in our inventory
KFN542-4S / Nut,self-locking,assembled washeWhat is the formal definition of this item?
A nut on which has been assembled a nonremovable washer. an integral feature is incorporated for locking on the threads of a mating member.
