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AN310C4 Army-Navy Standard Plain Castellated Hexagon Nut

Thread: 1/4-28, corrosion resistant steel, AN310 series nut

Manufacturer certifications are shipped with your order FREE of charge

Add to Cart Available Quantity: 220

AN310C4 Price: $1.55 /Each
* Sold in increments of 20

AN310C4 Spec.

Bearing Surface Type:
Washer faced
Countersink Angle:
109.0 degrees nut and 111.0 degrees nut
Steel comp 302 or steel comp 303 or steel comp 304 or steel comp 305 or steel comp 316 or steel comp 317 or steel comp 347 or steel comp 410 or steel comp 414 or steel comp 416
Thread Size:
0.250 inches
Nondefinitive Specification/std Data:
5 type
Nut Height:
Between 0.265 inches and 0.297 inches
Nut Style:
hexagon castellated
Material Specification:
66 federal standard all material responses
Width Across Flats:
Between 0.428 inches and 0.440 inches
Surface Treatment Specification:
Qq-p-35 federal specification single treatment response
Surface Treatment:
Thread Class:
Thread Direction:
Thready Qty Per Inch (tpi):
Thread Series:
Unf (fine thread)

Additional Information

Found In: AN Series Nuts
Gov. Issued Name: Nut, Plain, Castellated, Hexagon
NSN: 5310-00-167-1280
FSC: Nuts and Washers / 5310
Associated NSN(s):
  • 5310-00-364-9733
  • 5310-00-734-5535
Schedule B: 7318.16.0000, Nuts of iron or steel
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Manufacturer Country: United States  USA
PDF: AN310C4 Spec.pdf