7S39-4A8

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Description:

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

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7S39-4A8 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.400 inches minimum and 0.450 inches maximum
Fastener Length:
0.910 inches minimum and 0.940 inches maximum
Head Style:
Flat countersunk
Head Diameter:
0.326 inches minimum and 0.395 inches maximum
Grip Diameter:
0.2485 inches minimum and 0.2495 inches maximum
Internal Drive Style:
Cross recess type 1
Thread Diameter:
0.250 inches
Grip Length:
0.490 inches minimum and 0.510 inches maximum
Thready Qty Per Inch (tpi):
28
Min. Tensile Strength (psi):
160000 pounds per square inch
Countersink Angle:
99.0 degrees minimum and 101.0 degrees maximum
Material:
Steel comp 4130 overall
Surface Treatment:
Cadmium overall and chromate overall
Surface Treatment Specification:
Qq-p-416 ty 2 cl 3 fed spec all treatment responses overall
Thread Series Designator:
Unf
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Steel
Length 15/16

Additional Information

SKU / Model: 7S394A8
NSN: 5305-00-857-1319
FSC: Screws / 5305
Product Series: 7S39
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 5 EA
Schedule B: 7318.15.6080
ECCN: 9A991
National Motor Freight: 096640, Screws, Iron Or Steel
Download PDF Version
7S39-4A8_Military-Fasteners-com.pdf
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More 7S39 machine screws

7S39-4A7

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

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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I placed this order late at 4:15 over the phone, 15 minutes past the cut off time.(Which rarely happens) It was critical for us to get the sparkplugs as a customer had called me and scheduled to bring his plane in the next day to have all his plugs replaced. My sales agent said she would personally go and pull the product so it would ship that day, and she did what she said. She saved me the embarrassment of telling my customer I forgot to order his parts on time and making him reschedule a maintenance visit. I am thankful you have people like her who really care about the customer and want to put in the extra effort for customer service. In my aircraft maintenance business I purchase everything I can first from Military Fasteners before I go looking for other venders. I use Military Fasteners because of the great customer service, free shipping (which is one day ground), large selection on hardware and materials, and competitive prices. I am a loyal customer and I order 2-3+ times a week. Thank you for the great service that your people provide at Military Fasteners.

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 am really pleased with the customer service I received. Very communicative, and the items are available at decent pricing.

5.0

Your service is great. I have use you for years and your service has always been great

4.0