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Table 402. Dimension and Installation Data for Heavy Duty Keensert Thread Inserts (Cont)
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Table 403. Dimension and Installation Data for Light Weight Keensert Thread Inserts
DIMENSIONS INSTALLATION DATA REMOVAL DATA
Non-Locking Internal Thread Locking Internal Thread Class 3B External Thread *L *A Tap Drill Dia C'Sink Dia +.010 -.000 Thread Tap Drill
Size Class 2A Shear Engag. Size Class 2B Min Depth Installation Tool Part Number Size Depth
X 10-32 5/16-18 .1517 .31 .272 .323 5/16-18 .37 TD 1032L 7/32 5-32
X .0945 .31
X 10-24 .1517 TD 1024L
X .0945 .31
X 1/4-28 3/8-16 .2371 .37 .332 .385 3/8-16 .43 TD 428L 9/32 3/16
X .1726 .33
X 1/4-20 .2371 TD 420L
X .1726 .36
X 5/16-24 7/16-14 .3049 .43 .397 .447 7/16-14 .50 TD 524L 11/32
X .2321 .34
X 5/16-18 .3049 TD 518L
X .2321 .37
X 3/8-24 1/2-13 .4299 .50 .453 .510 1/2-13 .56 TD 624L 13/32
X .3366 .36
X 3/8-16 .4299 TD 616L
X .3366 .40
X 7/16-20 9/16-12 .5665 .56 .516 .572 9/16-12 .62 TD 720L 15/32
X .4606 .41
X 7/16-14 .5665 TD 714L
X .4606 .45
X 1/2-20 5/8-11 .7175 .62 .578 .635 .68 TD 820L 17/32
X .5906 .42
X 1/2-13 .7175 TD 813L
X .5906 .47
L = Lenth of external threads A= Maximum distance to then of thread lock.with internal thread size 5/16 and more are furnished with 4 locking Kees. STANDARD MATERIALS: INSERT - 303 CRES (passivated) Kees - 302 CRES Inserts
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B. Method No. 407B: Loose or Damaged Thread Inserts (Aluminum or Magnesium Parts) Replacement
Replace loose or damaged thread inserts in aluminum or magnesium-alloy parts as follows:
(1)
Use long-nosed pliers (SECTION VII) to remove loose or damaged inserts.
WARNING: SOLVENT VAPORS ARE TOXIC AND FLAMMABLE. DO NOT INHALE
VAPORS. OBSERVE FIRE PRECAUTIONS.
(2)
Clean hole from which insert was removed, using solvent (Federal Specification P-D-680, Type 1) (SECTION VII) and remove corrosion if present.
NOTE: Refer to applicable manual to verify type of primer required.
(3)
Apply a thin, even coat of primer (Type I, Class C) (SECTION VII) to threaded area in which new insert is to be installed.
NOTE: Use a modified screwdriver, or a rod, with the correct outside diameter to fit inside diameter of insert and slotted to fit over tang of insert, to install new insert. 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：标准施工手册 STANDARD PRACTICES MANUAL 20-00-02/70-00-01(81)
