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Datasheet. A28217-001 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.
0.307in. and 0.357in. ⁓23/64"
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.
0.360in. and 0.400in. ⁓13/32"
The style designation indicating the configuration that most nearly corresponds to the appearance of the head.
flat countersunk
The length of a straight line which passes through the center of a circular head,and terminates at the circumference.
0.482in. and 0.502in.
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.
0.250in. ⁓1/4"
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
20
The included angle of the countersink.
99.0 degrees and 101.0 degrees
The chemical compound or mechanical mixture properties of which the screw is fabricated.
plastic polyamide
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the screw material.
MIL-P-17901, ty 1 mil spec single material 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.
1EA
Unc
20
Flat countersunk
0.307 inches minimum and 0.357 inches maximum
Right-hand
2a
Schedule B number: 3926909987
nmfc 156600
Articles of plastics & articles of other materials of heading 3901 to 3914
FSC 5305 ⁓ Screws
NSN 5305-00-493-3960 SCREW,MACHINE
unc thread series 20 thread quantity per inch flat countersunk head style 0.307" thread length right-hand 2a thread class
- NIIN
- 004933960
- NIIN Date
- 02/20/70
- Schedule B
- 3926909987
- Name Code
- 06657
- FIIG
- A500D0
- Item Weight
- 0.100lbs
- Item Dimensions
- --
- QUP
- 1
- Historical Price
- $1.28 EA
- 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
- - Department of The Air Force
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- Special Handling
- Other or no special handling required (sh)
- LTL (less than a truck load rating)
- Rating variable
- 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)
- Food sercive equipment, (mkt), field ranges, vacuum cans, beverage containers, etc
- NMFC (national motor freight code)
- 156600 PLASTIC/RUBBER ARTICLE VIZ:
- UFC (universal freight code)
- 77670
Similar by Design Other screws with similar characteristics
Nothing similar to this part number was found in our inventory
A28217-001 / Screw,machineWhat is the formal definition of this item?
An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). no. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. a locking feature may be incorporated in the design of the head or threads. excludes bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. see also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.
