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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Have had nothing but great experiences. If I ever need anything I just email Amelia Fato and she gets me fixed up! Super fast and helpful customer service. 10 out of 10.

5.0

Military Fasteners is an exceptional company in terms of how they run their business. Very prompt and responsive to questions, concerns, quotes, and all other forms of inquiry. Brittany Cornish supports many of the business transactions we perform with Military Fasteners and has made working with them an absolute pleasure. I would highly recommend them to anyone seeking mil-spec hardware.

5.0

10/10 service! My go to for all things mil spec hardware. Their customer service team is superb! Trisha had a quote back to us in a matter on minutes. Love working with Military Fasteners

5.0

Hello, I am an Estimator for CAMCO Mfg. Inc. We work with many Prime companies that require Military Fasteners. Kristen Belmont is always the first to respond and gives me great service! She guides me with her knowledge and treats me w/much respect (even when I don't know what I'm talking about) Out of all the outside sources I have to work with, I enjoy working with her best! Rick Donahue CAMCO Mfg. Inc.

5.0