PART NUMBER:
NA2304
FEDERAL SUPPLY CODE:
32387
NA2304 Series One Lug Plate Nut
NUT, SELF-LOCKING, PLATE, ONE LUG, LOW HEIGHT, C'BORED, FLOATING, 160 KSI, 450℉, 800℉
MATERIAL:
-
STEEL
Carbon or alloy heat treated SAE 1030 (UNS G10300), SAE 4130 (UNS G41300), or better; neither the sulfur nor phosphorous content shall exceed .050% by weight.
-
CRES
A286 (UNS S66286) per AMS5525, AMS5726, AMS5732, AMS5737 or AMS5853.
FINISH:
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STEEL
Cadmium plate per AMS-QQ-P-416, type II, class 2.
-
CRES
Silver plate for 800℉ use per AMS2410 to a .0002 min thickness on surface which can be touched by a ⌀0.750 ball. Threads shall show complete coverage, but thickness requirements on threads is waived.
-
PASSIVATE
Per AMS2700, method 1, class 4 all CRES parts before the application of dry film lubricant.
LUBRICANT:
-
Molydisulfide (MoS2) dry film lubricant per NAS3356. The inclusion of a lubricant on the baskets of dry film lubricated nuts is optional.
CODE:
-
"-" CODE
Indicates steel, cadmium plated with dry film lubricant.
-
"CS" CODE
Suffixed to basic part number indicates CRES nuts with silver plate.
-
"BC" CODE
Suffixed to the dash number indicates dimpled rivet holes.
-
"CM" CODE
Suffixed to the basic part number indicates CRES nuts, without silver plate, with dry film lubricant.
-
"W" CODE
Suffixed to the dash number indicates projection weld nibs for silver plated parts only (no silver plate on weld nibs).
-
"X" CODE
Suffixed to basic part number indicates cadmium plated nuts without dry film lubricant.
Marketing Summary
PART #: NA2304
- Nut
- Self-Locking
- Plate
- One Lug
- Low Height
- Counterbored
- Floating
- 160 KSI
- 450℉
- 800℉
Notes:
- Dimensions are in inches and apply after finish and prior to the application of lubrication unless otherwise specified.
- /2/ Minimum “E” limited only by strength requirements of specification.
- /3/ Float of nut portion of assembly shall not be less than .030 inches laterally and longitudinally from centered position. Nut body shall be capable of engagement with a bolt in the maximum misaligned position.
- /4/ Threads shall be in accordance with AS8879 before lubrication.
- /5/ The assembly shall provide a bearing surface for the nut within the housing. The nut and base portion of the assembly shall form one integral unit.
- This standard takes precedence over documents referenced herein.
- Unless otherwise specified, part inventory manufactured to previous revisions of the applicable drawing or specification may be procured and used until stock is depleted.
- Unless otherwise specified herein, referenced documents shall be the issue in effect on date of manufacture. However, existing material inventory certified to a previous revision of the applicable material specification(s) is acceptable for use until depletion.
- For CRES fasteners, magnetic permeability shall be less than 2.0 (air = 1.0) for a field strength H = 200 Oersteds using a magnetic permeability indicator per ASTM A342/A342M, test method 3.
Procurement Specification:
Steel Nuts — NAS3350, class II.
CRES Nuts — NASM25027 except minimum tensile strength shall be as tabulated. Test bolts for CRES nuts shall be 180 KSI minimum. All parts must meet qualification and inspection requirements. Manufacturers shall provide evidence of qualification when required. Testing shall be performed by manufacturer or independent laboratory. Procuring agency may conduct confirming qualification tests. no QPL shall be established.
