MS27577-4-13

Military Standard Screw

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Description:

Fastener Length: 1-1/4", Thread: 1/4-28, Thread Length: 21/64"

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MS27577-4-13 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.283 inches minimum and 0.334 inches maximum
Fastener Length:
1.231 inches minimum and 1.251 inches maximum
Head Style:
Flat countersunk
Head Diameter:
0.449 inches minimum and 0.507 inches maximum
Locking Feature:
Detent ball grip
Grip Diameter:
0.2483 inches minimum and 0.2492 inches maximum
Shank Unthreaded Hole Diameter:
0.076 inches minimum first hole and 0.086 inches maximum first hole
Internal Drive Style:
High-torque
Thread Diameter:
0.250 inches
Grip Length:
0.812 inches minimum and 0.828 inches maximum
Thready Qty Per Inch (tpi):
28
Hardness Rating:
36.0 rockwell c minimum overall and 41.0 rockwell c maximum overall
Countersink Angle:
100.0 degrees nominal
Distance From Head Largest Bearing Surface To Shank Hole Center:
1.131 inches minimum first hole and 1.161 inches maximum first hole
Surface Finish:
63.0 microinches grip
Surface Finish:
63.0 microinches top of head
Material:
Steel overall
Material Specification:
Mil-b-83050 mil spec single material response overall
Surface Treatment:
Cadmium overall and chromate overall
Surface Treatment Specification:
Qq-p-416 ty 2 cl 2 fed spec single treatment response overall
Thread Series Designator:
Unjf
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Steel
Length 1-1/4

Additional Information

SKU / Model: MS27577413
NSN: 5305-00-121-8885
FSC: Screws / 5305
Product Series: MS27577
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 1 EA
Schedule B: 7318.15.8085
ECCN: 9A991
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
MS27577-4-13_Military-Fasteners-com.pdf
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More MS27577 close tolerance screws

MS27577-4-18

Fastener Length: 1-9/16", Thread: 1/4-28, Thread Length: 21/64"

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Your website was easy to use and checkout was a breeze. My part was shipped right away and I received it quickly. Excellent service all around! Thanks to you all.

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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.

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Great company to work with! Customer service TEAM is outstanding. Thank you, Trisha for helping...

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Military fasteners has what we need in stock, ships quickly with all the proper paperwork. Much appreciated

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