BACB30LR4U21

Bolt

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Description:

Fastener Length: 1-3/4", Thread: 1/4-28, Thread Length: 7/16"

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BACB30LR4U21 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.400 inches minimum and 0.450 inches maximum
Fastener Length:
1.722 inches minimum and 1.752 inches maximum
Head Style:
Flat countersunk
Head Diameter:
0.455 inches minimum and 0.510 inches maximum
Grip Diameter:
0.2490 inches minimum and 0.2495 inches maximum
Internal Drive Style:
Cross recess type 1
Thread Diameter:
0.250 inches
Grip Length:
1.302 inches minimum and 1.322 inches maximum
Thready Qty Per Inch (tpi):
28
Countersink Angle:
100.0 degrees nominal
Material:
Iron alloy 660 overall
Surface Treatment:
Passivate overall
Thread Series Designator:
Unjf
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Iron
Length 1-3/4

Additional Information

SKU / Model: BACB30LR4U21
NSN: 5305-01-050-9652
FSC: Screws / 5305
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 1 EA
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
BACB30LR4U21_Military-Fasteners-com.pdf
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I called the customer service line just before Air Venture at Oshkosh to find out if they would have the parts I needed at their booth. The service rep on the phone was very helpful and was able to check the inventory that was taken to Oshkosh.I was told that the parts would not be available but could be shipped from the warehouse without delay. I ordered a full set of intake seals for a Continental 085 on the spot and they arrived in a few days. I am very happy with the service provided, and will be ordering more parts soon! Thank you Larry

5.0

Alternator was in stock, shipped same day, arrived quickly (even though I chose standard shipping during the height of the Christmas rush), packed well and at a good price. Well done, Military Fasteners, well done!

4.0

Very satisfied with the order process. I have been using you guys for the last few years and have never had a problem. Keep up the good work.

5.0

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