1、L-P-4LOA 73 m 7777774 0007LB5 L “. /- L #+57-/5 L-P-4l0a March 16, 1966 SUPERSEDING Int. Fed. Spec. L-P-O0410 (GSA-FSS) January 25, 1965 (See 6.6.) FEDERAL -SPECIFICATION PLASTIC, POLYAMIDE (NYLON), RIGID: RODS, TUBES, FLATS, MOLDED AND CAST PARTS This specification was approved bg thae Commissioner
2、, Federal Supply Sem- ice, General Services Administmtion, for the me of all Federal agencies. 1. SCOPE AND CLASSIFICATION 1.1 Scope. This specification cover8 the requirements of rigid plastic polyamide (ny- lon) molded and cast parts, rods, tubing, bushing stock, tubular bar, and flats for mechani
3、cal and electrical applications. 1.2 Classification. The polyamide rods, tubes, flats, molded and cast parts cov- ered by this specification shall be furnished ia the following composition as specified (see 6.2). Polyhexamethylene adipamide, (n.ylon 6/6). Polycaprolactam, (nylon 6). Monomer cast, (n
4、ylon 6). Polyhexcmethylene sebacamide, (nylon 6/10), low moisture absorption polya- mide. 1.2.1 Electrhl ghde. Polyhexamethy- lene sebacamide, (nylon 6/10) shall also be classified as electrical grade when control of its electrical properties is required (see 3.5.1 and 6.2). 1.2.2 The polyamide spec
5、ified in 1.2 shall be furnished filled or unfilled as follows and as specified by the procuring activity (see 6.2). Natural, with or without fillers. Weather resistant. Wear resistant. Heat stabilized. 2. APPLICABLE DOCUMENTS 2.1 pecifications and standards. The fol- lowing specifications and standa
6、rds, of the - issues in eff.ect on date of invitation for bids OF request for proposal, form a part of this specification to the extent specified herein. FederaJ Specifications: QQ-A-250/4-,Aluminum Alloy 2024, Plate and Sheet. QQ-C-576“Copper Flat Products with Sli.t, Slit and Edge-Rolled, Sheared,
7、 Sawed, or Machined Edges, (Plate, Bar, Sheet, and Strip). PPP-B-576-Box, Wood, Cleated, Ve- neer, Paper Overlaid. PPPlB-585-B?xes, Wood, Wirebound. PPP-13-591-Boxes, Fiberboard, Wood- PPP-B-601-Boxes, Wood, Cleated-Fly- PPP-B-621-Boxes, Wood, Nailed and PPP-B-636-Box, Fiberboard. Cleated. wood. Loc
8、k-Corner. Federal Sta.n?-Ol -t. 0.062 0.6 + 0.028, 0.250 2. 0.5 . - “ “ - 0.000 I- 3.12.3 Rods. Length and diameter shall be as specified by the procuring activity (see 6.2). Rods only up to 3/16 inch diam- eter may be furnished in coils. The average length per coil shall be not less than that speci
9、fied or marked. When furnished in cut lengths, the length tolerance shall be plus 1 inch, minus O, unless otheltwise specified or unless ordered to random lengths (see 6.2). Tolerances on rod diameter shall be within the applicable limits of table VIII. UnIess otherwise specified, random lengths wit
10、h a minimum of 75 percent of nominal length, may be supplied up to 10 percent of the or- der. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-L-P-410A 73 m 77779.74 0007L70 5 W g-P-410a TABLE VIII. Dimensions and tolerances of rods Nominal rod diam
11、eter, inches Up to 3/16 inclusive Over 3/16 to 1 . Over 1 to 2 . Over 2 to 3 . Over 3 to 4 . Over 4 Tolerances, inch -f- 0.001 f 0.002- + 0.008”- ”- - 0.000 4- 0.026- - 0.000 - 0.000 4- 0.126- - 0.000 + 0.060- 3.12.4 Tubing (see 6.1). The length and diameter (inside or outside), plus the wall thickn
12、ess shall be as specified by the pro- curing activity (see 8.2). Unless otherwise stated, the term diameter shall be consid- ered to mean inside diameter. Tolerances for the cross-sectional dimelisions shall be as shown in table IX. The length tolerance ehall .be the same as for rods. 3.12.5 Bushing
13、 stock. Bushing stock shall have the ir?side and outside diameters spec- ified .in the contract or purchase order (see. 6.2), and shall b.e capable of being machine finished to the inside diameter so specified, and shall have a. minimum wall thickness at any point around the circumference as fol- lo
14、ws : Nominal outside diameter - Nominal inside diameter 2 The length shall be as apecified and, unless otherwise specified or specified to random lengths, the length tolerances shall be plus 1 inch, minus O. Unless otherwise, specified, random lengths with a minimum of 75 per- cent of nominal length
15、, may be supplied up to 10 percent of the order. Tolerances for bushing stock shall be the mme as speci- fied for rods in table VI. 8.12.6 Tubular bar. Tubular bar shall have the outside diameter and inside diameter specified in the contraot or purchase order, within the tolerances specified in tabl
16、e X. The minimum wall thickness at any point around the circumference shall be as stated above for bushing stock (see 3.12.5). The length tolerances qhall be the same as for bushing stock. TABLE X. Npminal dimensions and tolerances of tubular bar Outside diameter or inside diameter, inches All sizes
17、 Tolerance, inch Outside Inside diameter diameter + 0.625- Undersized for - 0.000 finishing to P. - machined dimen- sions Nominal outside diameter (OD) or inside diameter (ID), inches 0.034 to 0.066 incl. 0.056 to 0.148 0.149 to 0.219 0.220 to 0.296 0.296 td 0.325 0.326 to 0.600 0.601 to 0.760 0.761
18、 to 1.260 1.261 to 1.600 TABLE IX. Dimensions and tolerances of tubing * Outside diameter or inside diameter tolerance, inch plus or minus 0.004 ,006 .O07 .o10 .o12 .O16 .O16 .o20 .o25 Nominal wall Wall tolerance, inch plus or minus thickness inch 0.012 to 0.020 0.003 .o12 to .o20 .O03 .O20 to .O62
19、,004 .O20 to ,062 .O04 .O20 to .O62 ,004 .O20 to ,062 .006. ,031 to .126 .o10 .O31 to ,126 ,010 .O31 to ,250 ,016 1 When checking outside diameter of 0.050 inch wall tubing and under, use inside diameter plug to support, - Provided by IHSNot for ResaleNo reproduction or networking permitted without
20、license from IHS-,-,-L-P-LILOA 73 7777774 0007L7L 7 W 3.13 Workmanship. The polyamide items furnished under this specification shall be free from blisters, cracks, checks, foreign inclusions, scratches, voids, or any other surface or internal defect which may detri- mentally affect serviceability or
21、 appearance. Similarly shaped items shall be uniform in color and finish. 4. QUALITY ASSURANCE PROW- SIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or pur- chase order, the supplier is responsible for the performance of all inspection require- ments as specified
22、herein. Except as other- wise specified, the supplier may utilize his own facilities or any commercial laboratory acceptable to the Government. The Govern- ment reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed neces- sary to assure
23、 that supplies and services conform to precribed requirements. 4.2 Sampling for inspection. Sampling for inspection shall be performed in accordance with the provisions set forth in MIESTD- 105, except where otherwise indicated. 4.2.1 Inspection of materials and compo- nents. In accordance with 4.1,
24、 of the speci- fication, the supplier is responsible for in- suring that materials and components used were manufactured, tested, and inspected in accordance with the requirements of ref- erenced subsidiary specifications and stand- ards to the extent specified. In the event of conflict, this specif
25、ication shall. govern. 4.3 Inspection of the end item. 4.3.1 Examination of the end item. Exam- ination of the end item shall be made in ac- cordance with the classification of defects, inspection levels, anld acceptable quality lev- els (AQLs) set forth below. The lot size, for purpose of determini
26、ng the sample size in accordance with MILSID-105, shall be ”_ . - - expressed in units of rods, tubing, flacs, molded or cast parts, each unit being of the same composition for examination in 4.3.1.1, 4.3.1.2, and in units of shipping containers in 4.3.1.3. 4.3.1.1 Examination of the end item for de
27、fects in appearance and workmanship3. The sample unit for the examination speci- fied in table XI shall be one sheet, one length or a minimum of six feet of rod, tubing or flat, or one molded or cast part as applica- ble. TABLE XI. Examnutim of the end item for defects in appearance and workmanship
28、Examine Appearance and workmanship : All forms Rods and flats Tubes Molded or cast Parts Defect Polyamide, filler, or form not as Color not as specified. Not uniform in color, finish, or texture. Presence of dirt, foreign material, or imbedded particles, Any blisters, cracks, scratches, holes, gouge
29、s, wrinkles, chipped edges or surfaces, dents, or heat marks. Edges not straight, smooth or square. X-ray examination for defecu not conducted when speci- fied (see 3.8 and 6.2). specified. Ends not square cut. Hole not concentric. Ends not square cut. Not shape specified. For standard shapes, the f
30、lask thickness shall not exceed 0.005 inch. 4.3.1.2 Examination of the end item for dimensional defects. The sample unit for the examination specified in table XII shall be one flat, rod, tube, bushing stock, tubular bar, molded or cast part as applicable. 7 Provided by IHSNot for ResaleNo reproduct
31、ion or networking permitted without license from IHS-,-,-“L-P-410a TABLE XII. Examination of the end item for dimensional defects Examine Flats Rods Tubing Bushing stock Tubular bar Molded parts Cast parts Defect Length, width, or thickness varies by more than the applicable tolerance indicated in 3
32、.12.2 or table VII. Length or diameter varies by more than the applicable tolerances in- dicated in 3.12.3 or table VIII. Varies by more than the applicable tolerances indicated in 3.12.4 or table IX. Varies by more than the applicable toleranceg indicated in 3.12.6. Varies by more than the applicab
33、le tolerances indicated in 3.12.6 and table X. Varies by more than the tolerances specified or indicated. When toler- ances are- not specified, the follow- ing shall apply: Range (inches) c Tolerances Up to 0.6 inch 0.0045 Over 0.5 to 1.0 0.0056 Over 1.0 to 2.0 0.007 Over 2.00 0.010 Varies by more t
34、han the tolerances specified by the procuring activity (see 6.2). 4.3.1.3 Examination of preparation for de- liverg. An examination in accordance with table XIII shall be made to determine that packaging, packing, and marking shall com- ply with the requirements set forth in sec- tion 5. The sample
35、unit for this examination shall be one shipping container, fully packed, selected just prior to the closing operation. Shipping containers, fully packe closure not accomplished by speci- fied or required methods or ma- terial#; component missing. Weight of intermediate packages ex- ceeds specified r
36、equirements. ,. . 1 “ Examine Packing Count Weight Markings Defect Not level specified. Containers not as specified, closures not accomplished by specified or re- quired methods or materials. Any nonconforming component, com- ponent missing, damaged, or other- wise defective, affecting service- abil
37、ity. Less than specified or indicated quan- tity. Gross weight exceeds specified re- quirements. Interior or exterior markings (as ap- plicable) omitted, illegible, incorrect, incomplete, or not in accordance with contract requirements. “ - 4.3.1.4 Inspection levels ucnd AQLs for ex- amination. The
38、inspection levels for deter- mining the sample size and the AQLs ex- pressed in defects per 100 units, shall be as follows : Examination Inspection paragraph level AQL 4.3.1.1 4.3.1.3 S-2 2.5 - _ 1- 2.6 43.1.2 S-2 4.0 4.3.2 Sampling for tests. A sample of suf- ficient size of the specified polyamide
39、 to conduct the melting point, relative viscosity, carbon content, absorbance, and molybdenum disulfide tests and -those of table IV, as ap- plicable, shall be selected at random from the sample specified in 4.3.1 os from the lot of material from which the shapes were made. 4.3.3 Lot a.cceptance tes
40、ts. Lot acceptance tests shall be made on each lot of material furnished and shall be the basis for accept- ance or rejection of the lot. Lot acceptance tests shall consist of all the test require- ments of tables I and II for the same poly- amide composition and the applicable re- quirements of tab
41、le III. Electrical grade ma- terial shall conform to all the tests listed in table IV, in addition to the appkable re- quirements of nylon 6/10 in tables I and II. If the average value obtained for any test fails to meet the requirements of this spec- ification, the lot represented by the teat speci
42、mens shall be rejected. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-L-P-4LOA 73 W 7777774 0007173 O W 4.4 Test methods. Unless otherwise spec- ified herein, all specimens shall be tested in accordance with the applicable test meth- ods of Fed. Te
43、st Method Std. No. 406. The reported results shall be the average of the values obtained for that particular test. In- dividual test values shall not deviate by more than zk 15 percent of the average value, except for elongation values which shall not deviate by more than minus 15 percent. 4.4.1 Pre
44、paration of test specimens. The number of samples required for the raw material tests shall be selected either from he powder or pellets and tested in that form or molded into test specimens, as ap- plicable, or shall be selected from the sam- ple units of 4.3.1 and used either as drillings, milling
45、s, or shavings or machined into test specimens as applicable. For cast nylon 6, specimens shall be prepared from a stand- ard. s1a.b by direct chemical reaction. For the other tests, the specimens shall be prepared from the sample units of 4.3.1 in the man- ner described in the particular test metho
46、d. When more than one specimen is required for any test, the specimens shall be taken from diffcfent sample units of 4.3.1 except that when more than three specimens are required, at, least three sample units shall be used and not more than $wo specimens for a particular test shall be taken from eac
47、h. 4.4.1.1 Conditioning. Test specimens for melting point and specific gravity shall be tested as received without conditioning. Test specimens for relative viscosity, tensile strength and elongation of tables I, II, and III and all the test specimens for require- ments of table II shaIl be dried un
48、der vac- uum as specified in 4.4.5. Unless otherwise specified, all other test specimens shall be conditioned in accordance with section IV of Fed. Test Method Std. No. 406. 4.4.2 The following tests shall be made in accordance with the applicable methods specified in table XIV, and 4.4.3 through 4.
49、4.12. - L-P-4l0a TABLE XIV. Test methods Test “- Specific gravity Rockwell hardness (R scale) Impact strength . Deflection temperature under load Deformation under load . Heat resistancel, 100 hours minimum at 160“ 90 per- cent formic acid at 80“ to 90 C., inclusive; hot water; and methanol. 2. Dry the crucible to constant weight in a 100“ 4 5C. oven. Before each weighing, cool the crucible in a desiccator for 16 to 20 minutes. 3. Place the crucible on the pan of an analytical balan
