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Datasheet. 21131-3 specification
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
3a nut thread
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
3a stud thread
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 nut thread
A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.
0.312in. stud thread ⁓5/16"
An element inserted into the fastener,or a design feature,that enables the fastener to effectively resist vibration and rotation.
any acceptable
The dimension measured along the longitudinal axis with terminated points at the extreme ends of the item.
0.812in. ⁓13/16"
0.461in.
0.312in.
0.037in.
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
28 stud thread
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
32 nut thread
A designation that is used for the purpose of general identification of the thread.
0.190in. nut thread ⁓13/64"
A designation that is used for the purpose of general identification of the thread.
0.250in. stud thread ⁓1/4"
The chemical compound or mechanical mixture properties of which the item is fabricated.
steel
The style designation indicating the configuration that most nearly corresponds to the appearance of the item.
locked in
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.
unjf nut thread
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.
unjf stud thread
Answers.
Unjf stud thread
Unjf nut thread
Locked in
Steel
32 nut thread
28 stud thread
0.312 inches stud thread
Right-hand nut thread
3a stud thread
3a nut thread
FSC 5307 ⁓ Studs
NSN 5307-01-268-1308 STUD,LOCKED IN
unjf stud thread thread series locked in 32 nut thread thread quantity per inch 0.812" overall length 0.312" stud thread thread length right-hand nut thread 3a stud thread thread class
- NIIN
- 012681308
- NIIN Date
- 11/23/87
- Schedule B
- Name Code
- 16012
- FIIG
- A051A0
- 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
Major End Users Countries and entities
- - Australia
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21131-3 / Stud,locked inWhat is the formal definition of this item?
A headless fastener externally threaded on both ends with each threaded portion of one but not necessarily the same nominal diameter. it is designed to be locked in place by either a ring, lock, serrated or a ring, lock, keyed.
