amsc n/a 1 of 4 fsc 1560 distribution statement a . approved for public release; distribution is unlimited. inch-pound MS21254U 20 november 2002 superseding ms21254t 5 november 2001 detail specification sheet eye end, turnbuckle, clip locking this specification is approved for use by all depa rtments and agencies of the department of defense. the requirements for acquiring the product described herein shall consist of this specification sheet and the issue of mil-dtl-8878 and qpl-8878 listed in that issue of the department of defense index of specifications and standa rds (dodiss) specified in the solicitation. figure 1. eye end, turnbuckle, clip locking . free datasheet http://www..net/
MS21254U 2 table i. dash numbers and dimensions . dash number direction of thread wire rope diameter rh lh nominal reference minimum minimum breaking strength lbs. thread t unf-3a ? c +0.006 -0.000 ? d +0.002 -0.000 e + 0.031 radius f +0.010 -0.000 j + 0.005 -2rs -2ls -2rl -2ll 1/16 0.062 800 0.1380 (#6)-40 0.094 0.125 0.125 -3rs -3ls -3rl -3ll 3/32 0.093 1,600 0.190 (#10)-32 0.133 0.190 0.156 0.031 0.188 -5rs -5ls -5rl -5ll 5/32 1 / 0.156 3,200 0.250 (1/4)-28 0.189 0.250 0.219 0.219 -6rs -6ls -6rl -6ll 3/16 0.187 4,600 0.3125 (5/16)-24 0.243 0.313 0.250 0.047 0.281 -8rl -8ll 1/4 0.250 8,000 0.3750 (3/8)-24 0.306 0.375 0.281 0.063 0.328 -9rl -9ll 9/32 0.281 12,500 0.4375 (7/16)-20 0.362 0.438 0.359 0.375 -10rl -10ll 5/16 0.312 17,500 0.5000 (1/2)-20 0.425 0.500 0.406 0.078 0.469 1 / see note 6. table i. dash numbers and dimensions - continued. dash number direction of thread wire rope diameter m n rh lh nominal reference minimum k +0.000 -0.015 maximum minimum maximum p 0.031 ? s +0.025 -0.010 y 0.047 2 / z +0.031 -0.015 -2rs -2ls 1.500 -2rl -2ll 1/16 0.062 0.1139 0.1094 0.0096 0.325 0.375 0.375 2.375 -3rs -3ls 1.625 -3rl -3ll 3/32 0.093 0.1638 0.1568 0.0077 0.416 0.500 0.500 2.500 -5rs -5ls 1.750 -5rl -5ll 5/32 0.156 0.031 0.2224 0.2152 0.0103 0.512 0.625 0.625 2.625 -6rs -6ls 1.875 -6rl -6ll 3/16 0.187 0.2830 0.2754 0.0064 0.527 0.688 0.750 2.750 -8rl -8ll 1/4 0.250 0.3454 0.3378 0.0057 0.678 0.875 0.875 2.875 -9rl -9ll 9/32 0.281 0.047 0.4052 0.3972 0.0056 0.831 1.063 3.375 -10rl -10ll 5/16 0.312 0.063 0.4678 0.4597 0.0058 0.900 1.188 1.000 3.625 2 / includes last full thread engagement. requirements: 1. material : material shall be in accordance with mil-dtl-8878. 2. protective treatment : protective treatment shall be in accordance with mil-dtl-8878. 3. heat treatment : heat treatment shall be in accordance with mil-dtl-8878. 4. finish : finish shall be in accordance with mil-dtl-8878. 5. threads : threads shall be in accordance with fed-std-h28/20. 6. tolerances : unless otherwise specified, tolerances: decimals 0.010, angles 0.5 . * * free datasheet http://www..net/
MS21254U 3 7. outside diameter (o.d.) : o.d. of the "f" dimension may be a flat area. notes: 1. part or identifying number (pin) : the part or identifying number (pin) consists of the letters ms, the specification sheet number, and a dash number taken from table i. a "c" in lieu of dash indicates 17-4ph; a dash indicates carbon or alloy steel. the first letter following the dash number or letter c indicates direction of thread (left or right hand) and the second letter indicates length (short or long). example: ms 21254 - 3rl dash number use c for 17-4ph or dash for carbon or alloy steel specification sheet number ms prefix ms21254c3ls indicates - eye, turnbuckle, 17- 4ph, 0.1900 (#10)-32 left hand thread, short. ms21254-3rl indicates - eye, turnbuckle, steel, 0.1900 (#10)-32 right hand thread, long. 2. remove burrs and sharp edges. (see mil-dtl-8878.) 3. dimensions are in inches. 4. interpret drawing in accordance with asme y14.5m. 5. ms21254 items can replace an165 items of like thread size and material. 6. for 0.125 (1/8) inch diameter wire rope use -5 parts, minimum breaking strength 2,200 pounds (lbs.) (reference). 7. steel, carbon and alloy eye end turnbuckles are inactive for new design. 17-4ph stainless steel eye end turnbuckles shall be used for new design and can be used to replace comparable steel parts. 8. in the event of a conflict between the te xt of this document and the references cited herein, the text of this document takes precedence. 9. unless otherwise specified, issues of referenced documents are those in effect at the time of solicitation. 10. for clip locking of turnbuckles, see ms33736 and mil-dtl-8878. free datasheet http://www..net/
MS21254U 4 11. the parts covered by dash numbers shown on an165 are canceled after 25 november 1963. use the dash numbers given in table i. the canceled parts cannot replace the new parts and should be used until existing stock is depleted. use only the ms21254 parts for new design and substitution. substitution shall be in accordance with table ii. table ii. substitution table . part number canceled part an165 new part ms21254 dash number dash number 8 2 16 3 22 5 32 5 46 6 61 8 80 8 125 9 175 10 changes from previous issue: the margins of this specification sheet are marked with asterisks to indicate where changes from the previous issue were made. this was done as a convenience only and the government assumes no liability whatsoever for any inaccuracies in these notations. bidders and contractors are cautioned to evaluate the requirements of this document based on the entire content irrespective of the marginal notations and relationship to the previous issue. custodians: army - av navy - as air force - 99 preparing activity: dla - gs5 (project 1560-0022) review activities: navy - mc air force - 71 free datasheet http://www..net/
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