7S39-4A7

Screw

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Description:

Fastener Length: 7/8", Thread: 1/4-28, Thread Length: 7/16"

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7S39-4A7 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.425 inches minimum
Fastener Length:
0.862 inches nominal
Head Style:
Flat countersunk
Head Diameter:
0.389 inches minimum and 0.394 inches maximum
Internal Drive Style:
Cross recess type 1
Thread Diameter:
0.250 inches
Thready Qty Per Inch (tpi):
28
Min. Tensile Strength (psi):
160000 pounds per square inch
Hardness Rating:
36.0 rockwell c minimum and 40.0 rockwell c maximum
Countersink Angle:
100.0 degrees nominal
Screw Material:
Steel comp 4130
Screw Material Specification:
Mil-s-6758 mil spec single material response
Screw Surface Treatment:
Cadmium
Thread Series Designator:
Unf
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Steel
Length 55/64

Additional Information

SKU / Model: 7S394A7
NSN: 5305-00-838-0583
FSC: Screws / 5305
Product Series: 7S39
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 10 EA
Schedule B: 7318.15.6080
ECCN: 9A991
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
7S39-4A7_Military-Fasteners-com.pdf
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More 7S39 machine screws

7S39-4A8

Fastener Length: 59/64", Thread: 1/4-28, Thread Length: 13/32"

7S39-4A5

Fastener Length: 47/64", Thread: 1/4-28, Thread Length: 13/32"

7S39-4A4

Fastener Length: 43/64", Thread: 1/4-28, Thread Length: 13/32"

7S39-3A8

Fastener Length: 27/32", Thread: 10-32, Thread Length: 23/64"

7S39-3A7

Fastener Length: 25/32", Thread: 10-32, Thread Length: 23/64"

7S39-3A4

Fastener Length: 19/32", Thread: 10-32, Thread Length: 23/64"

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Customer Reviews

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Fast and as ordered. Always easy via the website.

5.0

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 service and Very fast. Ramona was a great help. Keep up the great work!!

5.0

I always receive my shipments from Military Fasteners quickly without having to follow up and track down shipments. West Coast shipments arrive usually the next day via UPS ground, making it an effective choice. Thank you for excellent service.

4.0