Nathan,
J is not a simplex key section but rather the designation for the J-series multiplex family JA, JB, JC, JD, JE, JF, JG, JH & JK with the all-section master as JMK, made in 3, 4, 5 & 6-pin versions; see thumbnail attached
Pete Schifferli
Printable View
Good to know the Old Ilco 997BA number for the Yale PL blank. Thanks for finding that. Still is the full size key with standard large head and blade height. Wondering what the Yale or Ilco number is for the small blank that the head and blade height is the size of like a Yale JA or X10 1/2 blank surprised they made both large and small in the PL keyway. Thinking it might be EN10 PL?
Richard
997BA is the small size (.40 dia. plug) key. In theory the Yale nomenclature would be RN10PL (4-pin) but if it is indeed denoted as PL section, it is long obsolete and/or end-user restricted. Note that the RN prefix denotes round bow nickel silver while EN is for the Eaton bow nickel silver which was used when Yale was owned by Eaton Corp. from about 1963 to 1979, but discontinued subsequent to that date under yet another change in ownership.
Pete Schifferli
Pete
Thanks for all that clarification. RN = Round Nickel silver 10 being .40 dia plug. Thus RN11 = .50 dia. EN = Eaton Nickel.
Eaton made those never popular offset square head bow that hang crooked on the keyring. I have boxes of them I could never sell. What were they thinking with those.
Richard
The integer or basic model number embedded within the catalog number of Yale pin tumbler key blanks denotes both the plug diameter and number of pins, the most common being:
- 8 = 5-pin, .51" dia
- 9 = 4-pin, .51" dia
- 10 = 4-pin, .40" dia
- 11 = 6-pin, .51" dia
- 12 = 6-pin, .40" dia
- 13 = 6-pin, .40" dia
- 19 = 3-pin, .40" dia
- 117 = 7-pin, .51" dia
- 118 = 8-pin, .51" dia
- 211 = 7-3/4 pin, .51" dia
- 411 = 7-1/2 pin, .51" dia
The .40" dia. plugs were mainly used on cabinet locks, a business that Yale exited decades ago.
See pdf Yale Cylinders/Keys - Cylinders and Keying Manual at the link, note especially pgs. 19-21:
http://content.assaabloyusa.com/cs/g...dss1013399.pdf
Pete Schifferli
It's been a long time and my memory isn't as sharp as it once was, but hopefully Billy Edwards will show up before long and either confirm or dispute what follows. I defer to him in advance.
As I think someone said, P is a proprietary multiplex sectional series (PA thru PH). While there is a PMK blank that passes all P multiplex keyways, there is no corresponding keyway that accepts only the PMK blank. The is also an L proprietary sectional series and LMK blank.
Page 21 in the document Pete referenced in post #15, shows the G, S and T multiplex keyways, their associated xMK blanks and a GST blank that passes ALL the G, S and T multiplex keyways. Note that while each group has a xMK blank, the GST blank is not marked GSTMK.
Not shown are GS, ST and GT blanks, each passing the indicated groups of keyways. They exist, but are rarely used. Again, take notice of the 2-letter indicators without the trailing MK.
Take a close look at the pictures of the RN11PL blanks from post #4. It could be these old eyes, but they appear to be multi-section MK blanks; probably passing all P and L multiplex keyways.
I wouldn't pretend to be as knowledgeable as BBE but I can tell you that the V-Series is the reverse of the G-Series, the Y-Series is the reverse of the S-Series and the Z-Series is the reverse of the T-Series. Also the K-Series is the reverse of the J-Series. Manufacturers can save tooling and design costs by reversing the same milling cutters used in production and thereby create new keyways. As you surmise, there are also L-Series and P-Series which are restricted. I agree with your supposition that PL is indeed the multi-milled master to fit both L and P-Series. I actually had a couple in stock which I had forgotten and they are indeed RN11PL, see thumbnail attached.
Pete Schifferli
There are three standard triple multiplex key sections made by Yale. The most commonly known for .51"plugs are the GST and the reverse VYZ. Less commonly known is the GLP. L and P were designed in error and can actually enter various GST keyways and for that reason were very seldom used once the interchange was discovered.
There are 9 individual sections in each multiplex named with a first letter that indicates the family it is part of, e.g., GA, GB, GC, GD, GE, GF , GG, GH and GK were the first 9 designed in 1892. The original names were not GA through GK. The GA was originally named G1R, GB was G1L, GC was G2R, GD was 2L, GE was G3R, GF was G3L, GG was G4, GH was G5 and GK was G6. Those first names we much too hard to remember and were only used until 1896.
BBE.
Have you found satisfactory key blanks yet?
If not, I may have some that might fit.
They are unmarked about .240" high and .856" long.
I will add photos.
If you think that they will fit I can send you a couple.
PM me your address.