1、 A-A-5562318 March 1997SUPERSEDINGMS18211B7 JANUARY 1995COMMERCIAL ITEM DESCRIPTIONSCREW, MACHINE, 82 AND 100 , FLATCOUNTERSUNK HEAD, SLOTTED, PLASTIC(NYLON), UNC-2A AND UNF-2AThe General Services Administration has authorized the use of this Commercial Item Description forall Federal Agencies.1. Sc
2、ope. This Commercial Item Description (CID) depicts the requirements for UNC-2A and UNF-2A thread,plastic - nylon, slotted, 82 and 100, flat countersunk head, machine screws.2. Salient characteristics.2.1 Material shall be plastic - nylon in accordance with ASTM D4066, Group 01, Class 1, Grade 1.2.2
3、 Threads shall be in accordance with ASME B1.1. Acceptable screw threads are those which can be threadedby hand with a nut to at least two fully formed threads closest to the screws head. The nut shall be ferrous,hexagon type, UNC-2B or UNF-2B as applicable, conforming dimensionally to ASME B18.6.3.
4、2.3 Full form threads shall extend to within two threads of the bearing surface of the head or closerif practicable.2.4 All tolerances, unless otherwise specified, shall be .005 for 3 place decimals.HLT8082HLTAJ99101ASMC N/A 1 of 6 FSC 5305INCH-POUNDBeneficial comments, recommendations, additions, d
5、eletions, clarifications, etc., and data which may improvethis document should be sent to: Defense Industrial Supply Center. ATTN: DISC-EED, 700 Robbins Avenue,Philadelphia, PA 19111-5096.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-556232DIST
6、RIBUTION STATEMENT A. Approved for public release; distribution is unlimited.TABLE I. DASH NUMBERS AND DIMENSIONS.NOMINAL SIZE .086(NO 2) .112(NO 4) .138(NO 6) .164(NO 8) .190(NO 10) .190(NO 10) .250(1/4) .250(1/4)THREAD CLASS 56 UNC-2A 40 UNC-2A 32 UNC-2A 32 UNC-2A 24 UNC-2A 32 UNF-2A 20 UNC-2A 28
7、UNF-2AA HEAD MAX .172 .225 .279 .332 .385 .385 .507 .507H HEAD 82 .055 .070 .085 .100 .120 .120 .155 .155HEIGHT 100 .037 .049 .060 .072 .083 .085 .110 .110J SLOT WIDTH .028 .035 .045 .050 .055 .055 .070 .070T SLOT DEPTH .020 .025 .030 .035 .045 .045 .070 .070L DASH NUMBERSLENGTH TOL 82 100 82 100 82
8、 100 82 100 82 100 82 100 82 100 82 100.125 1 20.188 2 21 41 61 81 101 121 141.250 3 22 42 62 82 102 122 142.312 4 23 43 63 83 103 123 143 163 183 203 223 243 263 283 303.375 5 24 44 64 84 104 124 144 164 184 204 224 244 264 284 304.438 6 25 45 65 85 105 125 145 165 185 205 225 245 265 285 305.500 7
9、 26 46 66 86 106 126 146 166 186 206 226 246 266 286 306.625 8 27 47 67 87 107 127 147 167 187 207 227 247 267 287 307.750 .015 48 68 88 108 128 148 168 188 208 228 248 268 288 308.875 49 69 89 109 129 149 169 189 209 229 249 269 289 3091.000 50 70 90 110 130 150 170 190 210 230 250 270 290 3101.125
10、 51 71 91 111 131 151 171 191 211 231 251 271 291 3111.250 172 192 212 232 252 272 292 3121.375 173 193 213 233 253 273 293 3131.500 174 194 214 234 254 274 294 3141.750 175 195 215 235 255 275 295 3152.000 176 196 216 236 256 276 296 316Provided by IHSNot for ResaleNo reproduction or networking per
11、mitted without license from IHS-,-,-A-A-5562333. Quality Conformance Provisions:3.1 The suppliers shall be responsible for those in process controls and inspections necessary to supplya product consistently conforming to the requirements of this document.3.2 Upon request, the supplier will certify w
12、ith documented test/ inspection evidence, that the partsupplied meets the requirements of this document.4. Notes4.1 All dimensions are in inches.4.2 Interpret drawing in accordance with ASME Y14.5M.4.3 The gate vestige shall be limited to .025 max and shall not be included in any tolerance.4.4 The P
13、art Identification Number PIN shall consist of the basic CID number followed by a dash numberfrom Table I.Example: AA 55623 - 42Designates dash numberCID numberDesignates a CIDAA55623-42 = indicates plastic-nylon, slotted, 82, flatcountersunk head, machine screw, .112 inch nominaldiameter, .250 inch
14、 long.4.5 Preservation, packaging, and marking shall be as specified in the contract or order.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-556234TABLE II SUPERSESSION TABLEMILITARY REPLACEMENT MILITARY REPLACEMENT MILITARY REPLACEMENTPIN CID P
15、IN PIN CID PIN PIN CID PINMS18211 AA55623 MS18211 AA55623 MS18211 AA55623-1C -1 -41C -83 -81C -150-2C -2 -42C -84 -82C -151-3C -3 -43C -85 -83C -163-4C -4 -44C -86 -84C -164-5C -5 -45C -87 -85C -165-6C -6 -46C -88 -86C -166-7C -7 -47C -89 -87C -167-8C -8 -48C -90 -88C -168-9C -20 -49C -91 -89C -169-
16、10C -21 -50C -101 -90C -170-11C -22 -51C -102 -91C -171-12C -23 -52C -103 -92C -172-13C -24 -53C -104 -93C -173-14C -25 -54C -105 -94C -174-15C -26 -55C -106 -95C -175-16C -27 -56C -107 -96C -183-17C -41 -57C -108 -97C -184-18C -42 -58C -109 -98C -185-19C -43 -59C -110 -99C -186-20C -44 -60C -111 -1
17、00C -187-21C -45 -61C -121 -101C -188-22C -46 -62C -122 -102C -189-23C -47 -63C -123 -103C -190-24C -48 -64C -124 -104C -191-25C -49 -65C -125 -105C -192-26C -50 -66C -126 -106C -193-27C -51 -67C -127 -107C -194-28C -61 -68C -128 -108C -195-29C -62 -69C -129 -83F -203-30C -63 -70C -130 -84F -204-31C
18、 -64 -71C -131 -85F -205-32C -65 -72C -141 -86F -206-33C -66 -73C -142 -87F -207-34C -67 -74C -143 -88F -208-35C -68 -75C -144 -89F -209-36C -69 -76C -145 -90F -210-37C -70 -77C -146 -91F -211-38C -71 -78C -147 -92F -212-39C -81 -79C -148 -93F -213-40C -82 -80C -149 -94F -214Provided by IHSNot for R
19、esaleNo reproduction or networking permitted without license from IHS-,-,-A-A-556235TABLE II SUPERSESSION TABLE (CONTD)MILITARY REPLACEMENT MILITARY REPLACEMENTPIN CID PIN PIN CID PINMS18211 AA55623 MS18211 AA55623-95F -215 -128C -269-96F -223 -129C -270-97F -224 -130C -271-98F -225 -131C -272-99F -
20、226 -132C -273-100F -227 -133C -274-101F -228 -134C -275-102F -229 -109F -283-103F -230 -110F -284-104F -231 -111F -285-105F -232 -112F -286-106F -233 -113F -287-107F -234 -114F -288-108F -235 -115F -289-109C -243 -116F -290-110C -244 -117F -291-111C -245 -118F -292-112C -246 -119F -293-113C -247 -1
21、20F -294-114C -248 -121F -295-115C -249 -122F -303-116C -250 -123F -304-117C -251 -124F -305-118C -252 -125F -306-119C -253 -126F -307-120C -254 -127F -308-121C -255 -128F -309-122C -263 -129F -310-123C -264 -130F -311-124C -265 -131F -312-125C -266 -132F -313-126C -267 -133F -314-127C -268 -134F -3
22、15Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-556236Military Interests Preparing ActivityDLA-ISCustodians:Army - ARNavy - SH Project Number (5305-2189)Air Force - 99Review Activity:Army - AT, AV, ME, MINavy - AS, MC, OSAir Force- 82National Security Agency - NSAProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
