NAS4204U12

Bolt

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Description:

Fastener Length: 1-3/16", Thread: 1/4-28, Thread Length: 27/64"

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NAS4204U12 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.425 inches nominal
Fastener Length:
1.160 inches minimum and 1.190 inches maximum
Head Style:
Flat countersunk
Head Diameter:
0.4564 inches minimum and 0.508 inches maximum
Grip Diameter:
0.249 inches minimum and 0.250 inches maximum
Internal Drive Style:
Tri-wing recess
Thread Diameter:
0.250 inches
Grip Length:
0.740 inches minimum and 0.760 inches maximum
Features Provided:
Finished head
Thready Qty Per Inch (tpi):
28
Countersink Angle:
99.0 degrees minimum and 101.0 degrees maximum
Surface Finish:
125.0 microinches grip
Surface Finish:
125.0 microinches top of head
Surface Finish:
32.0 microinches bearing surface of head
Surface Finish:
32.0 microinches threads
Material:
Iron alloy 660 overall
Material Specification:
Ams 5731 assn std single material response overall or ams 5737,uns k66286 assn std single material response overall
Surface Treatment:
Passivate overall
Surface Treatment Specification:
Qq-p-35 fed spec single treatment response overall
Supplementary Features:
Tri-wing recess no. nas4000-6
Thread Series Designator:
Unjf
Specification Data:
80205-nas4003 professional/industrial association standard and 80205-nas4204/canceled/ professional/industrial association standard
Nondefinitive Specification/std Data:
1 class and a type and 3 table and 0.250-28 size
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Iron
Length 1-3/16

Additional Information

SKU / Model: NAS4204U12
NSN: 5305-01-297-8020
FSC: Screws / 5305
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 1 EA
Schedule B: 7318.15.8085
ECCN: EAR99
Download PDF Version
NAS4204U12_Military-Fasteners-com.pdf
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I placed this order late at 4:15 over the phone, 15 minutes past the cut off time.(Which rarely happens) It was critical for us to get the sparkplugs as a customer had called me and scheduled to bring his plane in the next day to have all his plugs replaced. My sales agent said she would personally go and pull the product so it would ship that day, and she did what she said. She saved me the embarrassment of telling my customer I forgot to order his parts on time and making him reschedule a maintenance visit. I am thankful you have people like her who really care about the customer and want to put in the extra effort for customer service. In my aircraft maintenance business I purchase everything I can first from Military Fasteners before I go looking for other venders. I use Military Fasteners because of the great customer service, free shipping (which is one day ground), large selection on hardware and materials, and competitive prices. I am a loyal customer and I order 2-3+ times a week. Thank you for the great service that your people provide at Military Fasteners.

5.0

Fast, efficient, knowledgable, good all round people and I will be doing more business with them. I have an older plane and it is needing some refinements. Thanks for your service!

5.0

You're the best of the best! Thanks for being there for all of us!

5.0

I've been buying from Military Fasteners for about 2 years. In that time, I don't ever recall having a bad experience. Please keep up the great work and continue offering the fair prices, fast shipping and excellent customer service.

4.0