3M963-4L4

Screw

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Description:

Fastener Length: 23/32", Thread: 1/4-28, Thread Length: 29/64"

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3M963-4L4 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.444 inches minimum and 0.494 inches maximum
Fastener Length:
0.704 inches minimum and 0.734 inches maximum
Head Style:
Oval countersunk
Head Diameter:
0.3898 inches minimum and 0.3948 inches maximum
Grip Diameter:
0.2485 inches minimum and 0.2495 inches maximum
Internal Drive Style:
Offset cruciform (torque set)
Thread Diameter:
0.250 inches
Grip Length:
0.240 inches minimum and 0.260 inches maximum
Thready Qty Per Inch (tpi):
28
Min. Tensile Strength (psi):
180000 pounds per square inch
Hardness Rating:
39.0 rockwell c minimum and 43.0 rockwell c maximum overall
Countersink Angle:
99.0 degrees minimum and 101.0 degrees maximum
Surface Finish:
32.0 microinches grip
Surface Finish:
32.0 microinches threads
Material:
Steel comp 8740 overall
Material Specification:
Mil-s-6049 mil spec single material response overall
Surface Treatment:
Aluminum overall
Surface Treatment Specification:
Mil-c-83488,type 2 class 3 mil spec single treatment response overall
Thread Series Designator:
Unjf
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Steel
Length 47/64

Additional Information

SKU / Model: 3M9634L4
NSN: 5305-01-210-0795
FSC: Screws / 5305
Product Series: 3M963
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 1 EA
Schedule B: 7318.15.6080
ECCN: 9A991
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
3M963-4L4_Military-Fasteners-com.pdf
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More 3M963 machine screws

3M963-4L3

Fastener Length: 21/32", Thread: 1/4-28, Thread Length: 29/64"

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Customer Reviews

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

5.0

Very happy with purchase and product. The sales person who assisted me on the phone was excellent. thank you for your help.

5.0

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

As a maintenance and parts support operation (over 40 years in the business) I depend on a lot of suppliers to keep the aircraft we maintain and their owners happy. It is my experience that your company offers top notch customer support in every way and I can depend on my orders getting out as expected and delivered as soon as possible. It is a pleasure being one of your dealers. Thank you for your good service!

4.5