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 have only ordered from Military Fasteners once so far, but I can't even express how happy I was with our order. As a purchasing manager who deals with government contracts (and the strict requirements that come with them), I was beyond thrilled with the flawless paperwork that was provided (free of charge) with the products we ordered. Lindsey was a peach to interact with, and we received our order next day; one of the perks of having a warehouse close by. I am very much so looking forward to to ordering from them again! Response from the owner3 years ago Thank you so much Holly for the kind words. We constantly try and think of new ways to improve the experience for our customers. We strive to make the package presentation upon arrival how we would want as a customer. It truly is an honor to service our customers that support our government and military branches.

5.0

I was working with Kasey and she was very helpful. I received our fasteners very fast.

5.0

Great American company! Go Military Fasteners!

5.0

Ive been buying aircraft parts and supplies from Military Fasteners for 3 years as Ive built four different homebuilt aircraft. I have ALWAYS been perfectly satisfied with all facets of the process. Parts are almost always shipped the same day as I order them, even if I order in the afternoon. Im usually always able to find what i need on the website, and if not, I can call and be helped by someone who knows what he or she is doing. Your people make me feel like they really care about me. Prices are fair. I wish I could run my company as well as you run yours!

4.0