3M1278E4D7A

Bolt

email this to someone  
Description:

Fastener Length: 7/8", Hole Diameter: 5/64", Thread: 1/4-28, Thread Length: 27/64"

* Manufacturer certifications are shipped with your order FREE of charge
no image available
Add to Quote We are currently out of stock of this item. Click the button below to add this item to a quote and receive up to date pricing and availability by email.

Add to Quote

3M1278E4D7A Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.425 inches nominal
Fastener Length:
0.8475 inches minimum and 0.8775 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:
0.3775 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 7/8

Additional Information

SKU / Model: 3M1278E4D7A
NSN: 5305-01-536-4447
FSC: Screws / 5305
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 1 EA
Schedule B: 7508.90.5000
ECCN: 9A991
National Motor Freight: 096640, Screws, Iron Or Steel
Download PDF Version
3M1278E4D7A_Military-Fasteners-com.pdf
Worldwide Shipping

* report an issue on this page

More machine bolts

3M1278E4D9A

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

3M1278E4D5A

Bolt

3M1278E3D7A

Bolt

3M1278E3D5A

Bolt

3M1278E3D3A

Bolt

3M1277E5D8A

Fastener Length: 31/32", Hole Diameter: 1/16", Thread: 1/4-24, Thread Length: 15/32"

Have a question

If you require a quote on this or any product please visit our quote request page »

Browse our frequently asked questions page.

You may contact us by phone at +1 (904) 543-6395 or email us using our contact form.

Our hours of operation are 8:00am - 6:00pm EST

Customer Reviews

Google View our Google profile

Very pleased with the customer service I get when I call. My Cessna 182 is always needing a little bit of extra LOVE from Military Fasteners. When I call to order parts, your training and customer service of your order takers are the tops.. They understand what I'm looking for and can help me figure out how to order it. I've upgraded my old normal headsets to your reconditioned Bose X General Aviation Noise Cancelling. These are my first Noise Cancelling headsets and we are very pleased...I've come back and purchased 2 more...You are a very professional group! With your shipping location in Atlanta, sometimes, I get things in 1 day or 2 at the most. Thanks.

5.0

Have placed many orders in the past months with sales representative Brittany Cornish and couldn't be more pleased ! She is always a joy to speak with, and she always makes sure that my orders are delivered on time. She's a great asset to your team but I'm sure you already know that.

5.0

If your looking for a company that can provide you with technical help on a product that they sold you, this is not the place to buy anything. But they will tell you how sorry they are.

5.0

Military Fasteners always comes through. Easy ordering, good shipping, well packaged. Thanks!

5.0