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Datasheet. 1266998-1 specification
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
3b
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
The style designation indicating the configuration that most nearly corresponds to the appearance of the nut.
hexagon
0.050in. ⁓1/16"
The shortest straight line between flats,perpendicular to the height.
0.375in. ⁓3/8"
A designation indicating the diameter-pitch combination and the number of threads per measurement scale applied to a series of diameters.
unjef
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
56
A designation that is used for the purpose of general identification of the thread.
0.250in. ⁓1/4"
Indicates the type of bearing surface.
chamfered
The chemical compound or mechanical mixture properties of which the item is fabricated.
steel comp 303s or steel comp 303se
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.
MIL-S-7720 comp 303s or 303se, cond b mil spec 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.
passivate
Answers.
Steel comp 303s or steel comp 303se
56
Right-hand
3b
Schedule B number: 7318160000
Nuts of iron or steel
FSC 5310 ⁓ Nuts and washers
Note-nuts and washers, including specially designed, are to be classified in this fsc. a. nuts are a small metal block made in a variety of shapes such as square and hexagonal which is drilled and internally threaded. b. washers are a perforated piece of metal, leather, or other materials of various shapes or forms. they are used primarily as a seat for a bolt, nut, screw, rivet or nail to distribute pressure and prevent endwise motion over an area and/or to prevent movement between two parts by means of restraining features created by the shape of its edges.
Excluding bearing thrust washers (fsc 3120); shims (fsc 5365); ring spacers (fsc 5365); plate spacers (fsc 5365); lock rings (fsc 5365).
NSN 5310-00-813-9992 NUT,PLAIN,HEXAGON
passivate surface treated 56 thread quantity per inch right-hand 3b thread class
- NIIN
- 008139992
- NIIN Date
- 01/01/63
- Schedule B
- 7318160000
- Name Code
- 01857
- FIIG
- A021A0
- QUP
- Historical Price
- $0.83 EA
- 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
Major End Users Countries and entities
- - Brazil
- - Australia
- - Germany
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1266998-1 / Nut,plain,hexagonWhat is the formal definition of this item?
A nut, flat on top and bottom having 6 flat sides. for items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. see also locknut, tube fitting. for items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)
