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3b
LEFT-Hand
hexagon
0.312in. ⁓5/16"
0.875in. ⁓7/8"
unf
20
0.500in. ⁓1/2"
chamfered
nickel alloy 400 or nickel alloy R-405
QQ-N-281 fed spec all material responses
1EA
Nickel alloy 400 or nickel alloy r-405
20
Left-hand
3b
Schedule B number: 7508900000
nmfc 093460
Other articles of nickel (excluding cloth, grill & netting of nickel wire)
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).
20 thread quantity per inch left-hand 3b thread class
1. | BS4-1801-16 | Cage 63857 |
2. | BS4-1801PC16 | Cage 63857 |
3. | BS4-1816PC16 | Cage 63857 |
4. | BS4-1817PC39 | Cage 63857 |
Nothing similar to this part number was found in our inventory
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.)