MS21244-4

Military Standard Plain Castellated Hexagon Nut

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Description:

Assembled washer, 1/4-28 unjf thread, A grade steel, MS21244 series nut

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MS21244-4
MS21244-4
MS21244-4
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MS21244-4 Datasheet Features and Specification

Thread Class:
3b
Thread Direction:
Right-hand
Washer Outside Diameter:
0.530 inches minimum and 0.560 inches maximum
Counterbore Diameter:
0.299 inches minimum nut and 0.309 inches maximum nut
Overall Height:
0.365 inches minimum and 0.405 inches maximum
Nut Style:
Flat with turned back edge
Nut Counterbore Depth:
0.172 inches minimum nut and 0.192 inches maximum nut
Width Across Flats:
0.430 inches minimum and 0.439 inches maximum
Tempurature Rating:
450.0 deg fahrenheit maximum
Thread Series:
Unjf
Thready Qty Per Inch (tpi):
28
Thread Size:
0.250 inches
Bearing Surface Finish:
125.0 microinches
Material:
Steel comp 302 washer or steel comp 321 washer
Material:
Steel nut
Surface Treatment:
Cadmium nut and chromate nut
Surface Treatment:
Passivate washer
Surface Treatment Specification:
Qq-p-35 fed spec single treatment response washer
Surface Treatment Specification:
Qq-p-416 type 2 class 2 fed spec single treatment response nut
Nondefinitive Specification/std Data:
A grade
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Steel

Additional Information

Alternate Part Numbers

  • MSY03919
SKU / Model: MS212444
NSN: 5310-00-126-5753
FSC: Nuts and Washers / 5310
Product Series: MS21244
Pack Weight (Approx.) 0.125 lb
Minimum Qty (MOQ): 10
Schedule B: 7318.16.0085
ECCN: EAR99
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
MS21244-4_Military-Fasteners-com.pdf
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More MS21244 plain castellated hexagon nuts

MS21244-10

MS21244-10 unjf 3b hexagon nut 5/8-18 thread

Product Image Gallery

Product code MS21244-4
MS21244-4
MS21244-4
MS21244-4

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Customer Reviews

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Ordered on a Monday evening and arrived in New Zealand Friday afternoon. Very good prompt service and the compass was installed on the Saturday after calibration. Thanks Military Fasteners!

5.0

Great place to work with, great products, great online interaction, great checkout options, what can I say but keep doing what you are doing!

5.0

Products are military grade MIL-SPEC as advertised. I was able to locate #10 locking counter-sunk nutplates when ALL other locations, including Aircraft-Spruce, could not supply.

5.0

I have been a regular customer of military fasteners since 2018. I have always been satisfied with my purchases and quality of product.

5.0