3M1278E4D9A

Bolt

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Description:

Fastener Length: 0-63/64", Hole Diameter: 5/64", Thread: 1/4-28, Thread Length: 27/64"

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3M1278E4D9A Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.425 inches nominal
Fastener Length:
0.9725 inches minimum and 1.0025 inches maximum
Head Style:
Flat countersunk
Head Diameter:
0.388 inches minimum and 0.395 inches maximum
Shoulder Diameter:
0.2802 inches minimum grip and 0.2807 inches maximum grip
Shoulder Length:
0.5025 inches nominal grip
Hole Diameter:
0.076 inches minimum and 0.086 inches maximum
Spline Minor Diameter:
0.1105 inches minimum and 0.1125 inches maximum
Spline Major Diameter:
0.1540 inches minimum and 0.1560 inches maximum
Internal Drive Style:
Torx
Thread Diameter:
0.2500 inches
Hole Quantity:
1
Hole Type:
Drilled
Features Provided:
Cetyl alcohol lubricant
Thready Qty Per Inch (tpi):
28
Countersink Angle:
99.0 degrees minimum and 101.0 degrees maximum
Criticality Code Justification:
Agav
Shoulder Shape:
Round grip
Part Name Assigned By Controlling Agency:
Eddie bolt aircraft
Material:
Nickel alloy 718 overall
Material Specification:
Ams5662 assn std single material response overall
Surface Treatment:
Passivate overall
Surface Treatment Specification:
Mil-l-87132 type 1 grade b mil spec single treatment response overall
Thread Series Designator:
Unjf
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Nickel
Length 0-63/64

Additional Information

SKU / Model: 3M1278E4D9A
NSN: 5305-01-536-4445
FSC: Screws / 5305
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 1 EA
Schedule B: 7318.15.2010
ECCN: 9A991
National Motor Freight: 096640, Screws, Iron Or Steel
Download PDF Version
3M1278E4D9A_Military-Fasteners-com.pdf
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3M1277E5D8A

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I was impressed with the speedy delivery of my order and also with the order itself.

5.0

Military Fasteners did an excellent job fulfilling my most recent order. This superior performance is typical for ACS. My order arrived in excellent condition within just 3 days of placing the order. Well done!

4.0

I have been a customer since Fullerton Air Parts (Flo Irwin). That should speak volumes of the service I have received from Military Fasteners. In the early days, I had a variety of planes and was based out of Orange County Airport. At the time, the airport was surrounded by bean fields. I, and some of my friends, would frequently fly into Fullerton airport for lunch, the pick up whatever supplies we needed from Flo. She was a great lady, and I am glad that she passed on such a wonderful legacy. I am certain that she would be very proud of what she started, and proud of you all for building on her meager beginnings.

4.0

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!

5.0