3M963-4L3

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Description:

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

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3M963-4L3 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.444 inches minimum and 0.494 inches maximum
Fastener Length:
0.642 inches minimum and 0.672 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:
0.178 inches minimum and 0.198 inches maximum
Thready Qty Per Inch (tpi):
28
Min. Tensile Strength (psi):
180000 pounds per square inch
Hardness Rating:
39.0 rockwell c minimum overall 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
Specification Data:
76301-3-963 manufacturers standard
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Steel
Length 43/64

Additional Information

SKU / Model: 3M9634L3
NSN: 5305-01-263-5618
FSC: Screws / 5305
Product Series: 3M963
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 1 EA
Schedule B: 7318.15.6080
ECCN: EAR99
Download PDF Version
3M963-4L3_Military-Fasteners-com.pdf
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More 3M963 machine screws

3M963-4L4

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

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I have experienced 5-star customer service from Isaac Beltran at Military Fasteners. He is a true professional who goes out on a limb to help out his customers. I always check with Isaac when I need help with finding those hard to find items". Thank you again Isaac for your support!"

5.0

Great Website helped to identify the needed parts. The wide array of shipping options and costs helped minimize unnecessary expense. Parts arrived promptly. Thankyou

5.0

Parts were described exactly as received. Delivered exactly as promised. I was treated better than could have been expected. Give a 5.5 stars out of 5.

5.0

Another good experience with Military Fasteners, and our Sales Rep, Dan Hunter. We needed hardware for an older aircraft model, and Dan's expertise was exceptional. He quickly identified fasteners, even for parts with unclear descriptions, and provided invaluable technical assistance. The supporting data was spot-on, verified by our technicians. Despite finding slightly lower prices elsewhere, the unmatched service and expertise from Military Fasteners, particularly Dan, make them our preferred choice. Our order was delivered ahead of schedule. Highly recommend MilFast for top-notch service and technical support!

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