MS21125B411

Military Standard Bolt

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Description:

Fastener Length: 1-7/64", Thread: 1/4-28, Thread Length: 9/32"

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MS21125B411 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.277 inches minimum and 0.328 inches maximum
Fastener Length:
1.106 inches minimum and 1.126 inches maximum
Head Style:
Flat chamfer
Head Diameter:
0.477 inches minimum and 0.492 inches maximum
Head Height:
0.126 inches minimum and 0.141 inches maximum
Locking Feature:
Detent ball fastener
Grip Diameter:
0.2487 inches minimum and 0.2492 inches maximum
Shank Unthreaded Hole Diameter:
0.076 inches minimum first hole and 0.086 inches maximum first hole
Internal Drive Style:
Slot
Thread Diameter:
0.250 inches
Grip Length:
0.688 inches minimum and 0.704 inches maximum
Thready Qty Per Inch (tpi):
28
Distance From Head Largest Bearing Surface To Shank Hole Center:
1.011 inches minimum first hole and 1.031 inches maximum first hole
Surface Finish:
32.0 microinches bearing surface of head
Surface Finish:
32.0 microinches grip
Surface Treatment:
Passivate overall
Surface Treatment Specification:
Qq-p-35 fed spec single treatment response overall
Thread Series Designator:
Unjf
Quick Specs
Thread Size 1/4
Thread Qty 28
Length 1-1/8

Additional Information

SKU / Model: MS21125B411
NSN: 5305-00-092-6689
FSC: Screws / 5305
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 1 EA
Schedule B: 7318.15.8085
ECCN: 9A991
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
MS21125B411_Military-Fasteners-com.pdf
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Excellent supplier, easy ordering and quick delivery. I wish all my suppliers conducted business like this.

5.0

Trisha Hawkins and her team at Military Fasteners are absolutely incredible. We do a lot of Government and Military work and due to this there are a ton of restrictions with what products we can use. I called Military Fasteners (MF) with an extremely HOT request. Trisha was able to source those part numbers, tell me they were in stock and ready to ship. I ordered these on a Wednesday at 4:00pm. They shipped the same exact Wednesday, we received that weeks Friday, even though we were guaranteed Monday/Tuesday. Trisha - THANK YOU! Trisha's Team - THANK YOU! I will only be ordering my military hardware from you all.

5.0

Ordered the plugs on Tuesday and received them Friday morning. Great service. Items arrived as ordered. You run a tight ship.

4.0

I was looking for hard to find parts for a safety critical application. The first couple of places I tried had the part on their web page but when I tried to order it they said, sorry, they did not actually have the parts. I called Military Fasteners. Talked to an employee without delay. She looked up the part number, told me who manufactured them (important), where the company is located (very important) and shipped the parts immediately from their own inventory. Super nice, helpful, efficient and knowledgeable. They get it.

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