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Datasheet. 121887 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.
0.750in. ⁓3/4"
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.
0.750in. ⁓3/4"
The style designation indicating the configuration that most nearly corresponds to the appearance of the head.
hexagon
A measurement from the bottom to the top of the head,in distinction from depth.
0.150in. and 0.163in. ⁓11/64"
0.428in. and 0.438in.
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 maximum rated load in tension applied in a longitudinal direction,per unit of cross-sectional area,that the material can withstand without rupture.
74000 pounds per square inch
A numeric value that reflects the hardness of an item when used in conjunction with a hardness rating scale.
80.0 rockwell b and 100.0 rockwell b
Designates the specific surface roughness rating,representing the arithmetic average deviation of the surface from the meanline in profile.
125.0 microinches bearing surface of head
Designates the specific surface roughness rating,representing the arithmetic average deviation of the surface from the meanline in profile.
63.0 microinches threads
The chemical compound or mechanical mixture properties of which the item is fabricated.
steel
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.
sae gr 2 assn std single 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.
cadmium or zinc
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 3 fed spec 1st treatment response or QQ-Z-325, ty 2, cl 3 fed spec 2nd 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
The number,letter,or symbol that indicates the type,style,grade,class,and the like,of an item in a nonidentifying specification or standard.
2 type and 10p style and 2 grade
Answers.
Unc
Steel
20
Hexagon
0.750 inches maximum
Right-hand
2a
Schedule B number: 7318152000
Bolts and bolts and their nuts or washers exported in the same shipment
FSC 5305 ⁓ Screws
NSN 5305-00-012-1887 SCREW,CAP,HEXAGON HEAD
unc thread series cadmium or zinc surface treated 20 thread quantity per inch hexagon head style 0.750" thread length right-hand 2a thread class
- NIIN
- 000121887
- NIIN Date
- 01/01/63
- Schedule B
- 7318152000
- Name Code
- 18257
- 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. | FFS85 | Cage 81348 |
| 2. | GM121887 | Cage 7X677 |
| 3. | S188C | Cage 15434 |
| 4. | 23MS35291-6 | Cage 80045 |
| 5. | 101-2S4-3 | Cage 80063 |
| 6. | SHC250SC6 | Cage 80249 |
| 7. | 1-4 20X3-4 | Cage 35211 |
| 8. | 900037-1 | Cage 83179 |
| 9. | 21740 | Cage 35510 |
| 10. | 400684 | Cage 12027 |
| 11. | 900037-1 | Cage 32537 |
| 12. | D9485-26-26 | Cage 91340 |
| 13. | 1000-812 | Cage 63734 |
| 14. | GM121887 | Cage 24617 |
| 15. | 21740 | Cage 24975 |
Major End Users Countries and entities
- - U.s. Postal Service - Procurement And Supplies Department
- - Bonneville Power Administration
- - Spain
- - Singapore
- - Malaysia
- - Thailand
- - Belgium
- - France
- - Germany
- - Republic of Korea
- - United Kingdom
- - Portugal
- - Italy
- - Greece
- - Turkey
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121887 / Screw,cap,hexagon headWhat is the formal definition of this item?
An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. the threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. the thread length being the controlled dimension, the grip length is not specified. a locking feature may be incorporated in the design of the head or threads. the head is not designed to be held or driven with an inserted driver or by the thumb and fingers. excludes bolt,machine; bolt,externally relieved body; bolt,internal wrenching; and screw,cap,socket head.
