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Datasheet. 156972 specification
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
1a
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.
0.516in. and 0.609in. ⁓39/64"
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.
0.734in. and 0.766in. ⁓49/64"
The style designation indicating the configuration that most nearly corresponds to the appearance of the head.
square
A measurement from the bottom to the top of the head,in distinction from depth.
0.172in. and 0.203in. ⁓13/64"
0.234in. and 0.266in.
A measurement of the longest dimension of the point,in distinction from width.
0.109in. and 0.141in.
The length of a straight line which passes through the center of a circular point,and terminates at the circumference.
0.180in. and 0.183in.
The style designation indicating the configuration that most nearly corresponds to the appearance of the point.
dog
The style designation indicating the configuration that most nearly corresponds to the appearance of the internal drive.
w/o internal drive
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 specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.
QQ-S-630 FS1018 fed spec 1st material response or QQ-S-631 fed spec 2nd material response or QQ-S-634 fed spec 3rd material response or QQ-S-630 fed spec 4th material response or QQ-S-631 fed spec 5th material response or QQ-S-634 fed spec 6th material response or QQ-S-633 fed spec 7th material response or QQ-S-633 fed spec 8th 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.
zinc
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
Square
0.516 inches minimum and 0.609 inches maximum
Right-hand
1a
FSC 5305 ⁓ Screws
NSN 5305-00-281-3294 SETSCREW
unc thread series zinc surface treated 20 thread quantity per inch square head style 0.516" thread length right-hand 1a thread class
- NIIN
- 002813294
- NIIN Date
- 01/01/63
- Schedule B
- Name Code
- 06672
- FIIG
- A003B0
- 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
Other Part Numbers Parts with same form, fit, and function by other manufacturers
| 1. | A308411 | Cage 00000 |
Major End Users Countries and entities
- - Greece
Availability for 156972 A member of our team will provide you with a price and availability quote
Request a Quote »Shipping Information
- 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)
- 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
- 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)
- 093486 BOLTS,NUTS OR SCREWS, NOI (SUB 3)
- UFC (universal freight code)
- 48950
Similar by Design Other setscrews with similar characteristics
Nothing similar to this part number was found in our inventory
156972 / 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.
