Boeing Fasteners
Boeing Fasteners
(OP)
Anyone know a conversion table from Boeing “BAC” to “HL” or “DAN”?
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RE: Boeing Fasteners
BACB30MY and BACB30VT are protruding shear head hi-loks
BACB30NX is a protruding tension head hi-lok
BACB30NW and BACB30VU are countersunk shear head hi-loks
BACB30NY is a countersunk tension head hi-lok
I can provide more detailed info when I visit my other office next week. The above are for nominal size fasteners. There is additional conversion for oversizes.
RE: Boeing Fasteners
That’s a good start, I would be happy for any other info you could give me
RE: Boeing Fasteners
I,ve all the spetificatons of HL HI-shear corporation company.Are you looking for something special.
RE: Boeing Fasteners
I have a BACB30NW fastener, I only have the spec for a cres BACB30 (the letter code is in the office) The NW Is probably Ti. It’s a problem I have often as the Airbus SRM calls out HL fasteners, there’s a conversion in Chapter 51 but only includes DAN, FoN and such. It’s a shame Big B do not give a call out in HL, or is there a difference that I don’t know?
RE: Boeing Fasteners
BACB30NW is an countersunsk head shear hi-lock nominal made of TI 6AL4V 95KSI shear strength
you could use HL11 countersunk shear head hi-lock with the same material and shear strength nominal too.
boeing use X for 1º oversize, and Y for 2ª
R1 of HL11 is HL111, and R2 is HL411
yuo only need add. the finish coating the most usual are
VAP or VAZ aluminium coating
I hope this information could help you.
you can too send me and e-mail
debatarra@telefonica.net
RE: Boeing Fasteners
What's even more aggravating is Boeing's use of fastener codes. Their repairs contain their own (usually) three-character fastener codes, which you then have to look up to cross to the BACB30 part numbers, which you then have to look up in another table to cross to the HL part numbers.
At least oversize fasteners are easy with Boeing part numbers: add an 'X' to the end of the complete part number for 1/64" over nominal; add a 'Y' to the end for 1/32" over; and add a 'Z' to the end for 3/64" over (though the 'Z's are pretty rare, and expensive when you can find them).
Regards,
Sean Shenold
RE: Boeing Fasteners
RE: Boeing Fasteners
Thanks in advance,
Joe
RE: Boeing Fasteners
Try the HL48 - Protruding Head, A-286, 95ksi shear, cad-plate.
BTW that is just the basic pin. If you know the fastener code I could be more specific. (ie. BACC30? collar).
HST
RE: Boeing Fasteners
There are 3 different hex drive bolts with the same basic
part number all of them protuding head shear type 95 ksi
BACB30FM steel cadmiun
BACB30FM( )A A286 cadmiun
BACB30FM( )A-U A286 passivated
Mating collar BACC30M or BACC30AG
Could you confirm that there aren,t any letter after FM
regards deba
RE: Boeing Fasteners
RE: Boeing Fasteners
SOME of the older BACB30** and BACC30** "hex drive bolt and collar" specs have HL-base part numbers embedded on the last pages of the specs.
MOST newer BACB30** and BACC30** "hex drive bolt and collar" specs have NO HL-base part number references... and a detailed 1-to-1 review/comparison of specs [BACB30** to HL**] will allow You to determine "approximate equivalents".
Regards, Wil Taylor
RE: Boeing Fasteners
RE: Boeing Fasteners
Call your local hi shear rep and he can send you a CD with a complete cross over. You can sort it by BACB or by HL. Since the are a primary supplier I have yet to find one, BACB number, not listed. Though I guess there might be. I didn't think it was that tough?
Al
RE: Boeing Fasteners
What I’m doing now, with your suggestions is making a list of my own.
RE: Boeing Fasteners
Hi-Shear does have METRIC Hi-Lok Specs... I assume AirBus is metric.
Regards, Wil Taylor
RE: Boeing Fasteners
1) I speak neither for Boeing nor Airbus.
2) My exposure to Airbus fastener callouts is dated.
3) Take information from any source (including that I’m about to give you and point you to) other than directly the from OEM Part Standards (and Product Specifications) involved with a grain (better yet, a pound) of salt.
4) I am of the opinion that some treat aerospace fastener substitutions cavalierly. A disturbing, and potentially dangerous, “any part that fits” mind set is not uncommon. This observation is not directed at anyone in this thread.
“Hi-Loks” vs. “Lightweight” Pin Systems
BACB30VT and BACB30VU are not “Hi-Lok” Pins. Go to http://www.wescoaircraft.com/reports/eusoh.rpt and type in “BACB30VU” and then “BACB30VT”. Note that the descriptions given for these part numbers starts with “LTWT” (for “Lightweight”). Neither BACB30VT or BACB30VU are “Hi-Lok” Parts, but rather “lightweight” pins (“Hi-Lite”, “Aero-Lite”, “Veri-Lite”, etc.). My 7 Jun 05 2:04 post in thread31-121526 details some of the reasons why “Hi-Lok” and “Lightweight” components should not be mixed, and why a certain amount of precision (pickiness, if you like) is warranted in labeling/describing them.
Finish Codes:
Take a look at ht
Airbus And Metric Hi-Loks:
My (dated) memory is (oddly enough) that the vast majority of Hi-Loks specified by Airbus were “inch” and not “metric” parts. The cross-reference file link provided (assuming it is relatively complete and current, a couple of pretty whopping assumptions) appears to confirm this. Filtering for part numbers with “HLM” (Metric Hi-Lok) and “HSTM” (Metric Hi-Lite) prefixes reveals not a single “Airbus” or “Aerospatiale” part number.
RE: Boeing Fasteners
I've always assumed this was a cost/availability/repair decision made early on. It does seem a little odd. I'd have expected the French to have pushed for metric even if it was going to be initially costly.
RE: Boeing Fasteners
RE: Boeing Fasteners
RE: Boeing Fasteners
Try to get the BAC fasteners specification and compare with the fasteners sheets in the http://www.hi-shear.com/ for the Hi-Lok (HL).
RE: Boeing Fasteners
The hi-shear cd is "fastener standards and specifications issue date 09-15-04" It also references their website for up to date drawings as noted above. In checking it again though you are right it (the cd) doesn't have the cross over. My apologies for the error. Maybe it was rep that sent it to me.....
I have a 12 page spread sheet (pdf unfortunately) that crosses them from HL, HLT and HS to BACB. There's one kicking around that goes the other way as well. I will send an e-mail around and see if anyone has a true source.
Also in the other thread there was a link to an excel sheet that was pretty good. It wasn't perfect but it was good.
If you have a specific I can watch this thread the next couple days and get back to you. Just be careful of the designator BACB30FM6(A) the A in this case. Because without the A the repair automatically becomes time limited on a -300 or later 737.
RE: Boeing Fasteners