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Datasheet. 478253 specification
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
2a
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
A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.
0.389in. and 0.500in. ⁓1/2"
The dimension,measured along a line parallel to the longitudinal axis,from the largest bearing surface of the fastener head to the extreme opposite end,or as specifically designated for other type fasteners.
0.500in. ⁓1/2"
The style designation indicating the configuration that most nearly corresponds to the appearance of the head.
headless (setscrew)
The style designation indicating the configuration that most nearly corresponds to the appearance of the point.
flat
The style designation indicating the configuration that most nearly corresponds to the appearance of the internal drive.
slot
The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.
0.625in. ⁓5/8"
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
18
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.
counterbore hole 0.625 in. nom lg; 0.359 in. nom dia and 0.250 in dia
The chemical compound or mechanical mixture properties of which the item is fabricated.
aluminum alloy 6061 or aluminum alloy 1100
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.
QQ-A-225/1 temp T6 fed spec 1st 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.
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.
MIL-C-81706 cl 1a mil spec single treatment response
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.
unc
Answers.
Unc
Aluminum alloy 6061 or aluminum alloy 1100
18
Headless (setscrew)
0.389 inches minimum and 0.500 inches maximum
Right-hand
2a
Schedule B number: 7616106000
nmfc 013680
Threaded fasteners of aluminum
FSC 5305 ⁓ Screws
NSN 5305-01-266-7790 SETSCREW
unc thread series chromate surface treated counterbore hole 0.625 in. nom lg; 0.359 in. nom dia 18 thread quantity per inch headless (setscrew) head style 0.389" thread length right-hand 2a thread class
- NIIN
- 012667790
- NIIN Date
- 10/30/87
- Schedule B
- 7616106000
- Name Code
- 06672
- FIIG
- A003B0
- QUP
- Historical Price
- $1,426.20 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
Major End Users Countries and entities
- - Department of The Navy
- - Canada
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Request a Quote »Shipping Information
- Special Handling
- Other or no special handling required (sh)
- LTL (less than a truck load rating)
- 70.0
- 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
- 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)
- 013680 ALUM SCREWS
- UFC (universal freight code)
- 05760
Similar by Design Other setscrews with similar characteristics
Nothing similar to this part number was found in our inventory
478253 / SetscrewWhat is the formal definition of this item?
An externally threaded device whose threaded portion is of one nominal diameter with or without a head and having a cup, cone, or other type of machined point designed to prevent or restrict relative movement of parts and designed to be driven with either a wrench or inserted driver. a locking feature may be incorporated in the design of the head or threads.
