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Datasheet. PWA21742 specification
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
3a
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.
0.500in. ⁓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.
flat chamfer
The length of a straight line which passes through the center of a circular head,and terminates at the circumference.
0.430in.
A measurement from the bottom to the top of the head,in distinction from depth.
0.250in. ⁓1/4"
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
A numeric value that reflects the hardness of an item when used in conjunction with a hardness rating scale.
35.0 rockwell c and 40.0 rockwell c
The chemical compound or mechanical mixture properties of which the screw is fabricated.
steel
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
20
Flat chamfer
0.500 inches
Right-hand
3a
Schedule B number: 7318152000
nmfc 093483
Bolts and bolts and their nuts or washers exported in the same shipment
FSC 5305 ⁓ Screws
NSN 5305-00-917-6537 SCREW,MACHINE
unc thread series 20 thread quantity per inch flat chamfer head style 0.500" thread length right-hand 3a thread class
- NIIN
- 009176537
- NIIN Date
- 07/25/66
- Schedule B
- 7318152000
- Name Code
- 06657
- FIIG
- A500D0
- Item Weight
- 0.000lbs
- Item Dimensions
- --
- DEMIL / ITAR
- Uncontrolled item (Code A)
- Hazmat
- No hazard information available from HMIRS.
- MSDS
- N/A
- Precious Metals
- --
- Enviromental
- N/A
- Electrostatic ESD & EMI
- No ESD or EMI sensitivity
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- Special Handling
- Other or no special handling required (sh)
- LTL (less than a truck load rating)
- 60.0
- 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
- 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)
- 093483 BOLTS,NUTS OR SCREWS,NOI IRON OR
- UFC (universal freight code)
- 48950
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Nothing similar to this part number was found in our inventory
PWA21742 / 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.
