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Datasheet. LL51021-31 specification
Thread Class
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
3a
Thread Length
A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.
A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.
3.175 mm
Fastener Length
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.
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.
4.763 mm
Width Across Flats
The shortest straight line between flats,perpendicular to the height.
The shortest straight line between flats,perpendicular to the height.
1.984 mm
Answers.
What is the thread length?
3.175 millimeters
What is the thread class?
3a
What's the federal classification of LL51021-31?
FSC 5305 ⁓ Screws
NSN 5305-01-052-3713 SETSCREW
3.175mm thread length 3a thread class
- NIIN
- 010523713
- NIIN Date
- 12/14/77
- 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. | 5800765-9001-027 | Cage C0426 |
| 2. | LL57XD82J3 | Cage 03038 |
| 3. | 810138 | Cage 80249 |
Major End Users Countries and entities
- - Germany
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LL51021-31 / 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.
