MS27577-4-18

Military Standard Screw

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Description:

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

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MS27577-4-18 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.282 inches minimum and 0.333 inches maximum
Fastener Length:
1.543 inches minimum and 1.563 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:
1.125 inches minimum and 1.141 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:
1.443 inches minimum first hole and 1.563 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 1-9/16

Additional Information

SKU / Model: MS27577418
NSN: 5305-00-121-8895
FSC: Screws / 5305
Product Series: MS27577
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 1 EA
Schedule B: 7318.15.8085
ECCN: EAR99
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
MS27577-4-18_Military-Fasteners-com.pdf
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More MS27577 close tolerance screws

MS27577-4-13

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

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