1、A-A-55183 W 9999974 01420b7 183 W I AMSC N/A FSC 8305 I INCH-POUND I A-A-5 5 1 8 3 8 March 93 COMMERCIAL ITEM DESCRIPTION Cloth, Netting, Parachute Skirt Extension, Nylon, Rasche1 Knit The General Services Administration has authorized the use of this Commercial Item Description in preference to MIL
2、-C-43805. Abstract. for one type of raschel knitted nylon mesh net cloth intended for use as a parachute skirt extension. This Commercial Item Description covers requirements Salient Characteristics. Description. single needle bar raschel machine. The mesh size in the finished cloth netting shall be
3、 3-3/4 by 3-3/4 inches (inside measurements) The cross section of the mesh leg (pillar) shall consist of 5 ends of 840 denier yarn (Total nominal denier of 4200). The joining of the pillars (chain stitch) shall be accomplished by a single crossover of yarns during the knitting operation. square mesh
4、es when the netting is hung in the lengthwise direction. inches +/- 1 inch with five repeats. r) The netting shall be a mesh type knitted on a The width of the netting shall be cut to produce The overall width of the finished netting shall be 18 One edge of the netting Beneficial comments (recommend
5、ations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Defense Personnel Support Center, Clothing and Textiles Directorate, Attn: DPSC-FSSC, 2800 South 20th Street, Philadelphia, PA 19101-8419, by using the Standardization Document
6、 Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. Licensed by Information Handling ServicesA-A-55183 W 9999974 O142068 OLT W A-A-5 5 1 8 3 shall be either have a knitted selvage, or the edge shall be sewn (overedged) so that there shall be no loose ends along t
7、he full length. The color of the netting shall be natural unless otherwise specified in the procurement documents. Material. Yarns. The nylon yarns used in the manufacture of the netting shall be a bright, high tenacity, light and heat resistant polymide prepared from hexamethylene and adipic acid o
8、r its derivitives. The yarn or the cloth netting shall not be bleached in any manner or process unless specified in the procurement document. The finished netting shall conform to the requirements listed in Table I. Table I Physical Requirements Characteristic Requirement Yarn see above para. Luster
9、 n Heat and light resistance Il denier 840 Melting point 254O = loo Bleaching none light 4 Dry cleaning 4 Laundering 4 Test method 1/ AI /A AATCCI16A- 19 9 OA AATCC-132-1985 AATCC-61-1989 - i/ will be acceptable for the requirements. - 2/ Refers to test method of Fed. Std. No. 191. A suppliers certi
10、ficate of compliance shall be submitted and - 3/ The time of exposure shall be 20 standard fading hours and the test specimen shall be 4 to 5 grams of the cloth net material. Width. inches 2 1 inch when measured from sewn edge to sewn edge, with netting straightened by using slight tension prior to
11、measuring, or measurements can be made over a measuring clock under normal winding tension. In preparation of this width the netting shall be cut so as to produce square meshes when the netting is hung in the lengthwise direction. either a knitted selvage or the edge shall be sewn so that there shal
12、l be no loose ends along the full length of the edge of the netting. The overall width of the finished netting shall be 18 One edge of this netting shall have Mendina and ioininu. Damages in the netting shall be mended by 2 Licensed by Information Handling ServicesA-A-55183 m 9999974 OL420b7 T5b m A
13、-A-55 18 3 the patch method. cut out and replaced with a piece of undamaged netting. For mending and joinings, a full leg (one side of square mesh) shall be overlapped with a full leg of the main piece of the cloth netting and secured with a zig zag stitch using a single 840 Reuulatorv Reuuirements.
14、 use recovered materials in accordance with Public Law 94-580 to the maximum extent practicable. The damaged portion of the netting shall be i denier nylon yarn. The offeror/contractor is encouraged to Qualitv Assurance Certification. The contractor shall certify that the product offered meets the s
15、alient characteristics of this description and that the product conforms to the producers own drawings, specifications, standards and quality assurance practices. The government reserves the right to require proof of such conformance prior to the first delivery and thereafter as may be otherwise pro
16、vided for, under the provisions of the contract. Reliance on contractor QA systems shall not relieve the contractor of the responsibility of ensuring that all products or supplies submitted to the government for acceptance comply with all requirements of the contract. Examination. Cloth netting lots
17、 shall be inspected in accordance with “Sampling Procedures and Tables for Inspection by Attributes“, ANSI/ASQC 21.4, published by the American Society for Quality Control. 0 Yard bv vard examination. shall be visually inspected for defects as defined in MIL-STD- 1491 and as listed herein. All defec
18、ts shall be counted regardless of their proximity, one to another, except where two or more defects represent a single local condition of the netting, in which case only one defect shall be counted. a continuous defect shall be counted as one defect for each lengthwise three feet (1 yd.) of fraction
19、 there of in which it occurs. the sample unit for this examination shall be three feet (1 yd.) The sample size shall be in accordance with inspection level II of MIL-STD-105. The AQL shall be 2.5 defects per 100 units (3 feet per yard.) The lot size shall be expressed in units of 3 feet each (1 yd).
20、 An approximate equal number of feet shall be examined from each roll selected. The number of rolls over which the sample yardage shall be distributed shall be in accordance with table II. Packaaina ,Examination. Packaging examination shall be in accordance with PPP-P-1133. Defects. defects: cut, br
21、eak or tear; knot; sharp glob resulting from improper “hot knife“ cutting; thick or thin place; Abrasion mark; The required yardage of each roll The cloth netting shall be examined for the following 0 3 Licensed by Information Handling Servicesdrop ply or drop stitch; loose or tight knitting; mixed
22、yarn; float, kink, or miss knit; L/ Meshes not within specified tolerance; 2/ incorrect number of mesh repeats in the finished width; width not with specified tolerance; a/ thick or thin place - less than half or more than twice the nominal thickness of the yarn; Selvage edge cut or torn. - i/ Deter
23、mination of mesh size. by hand measuring the lengths of the four sides of the pillars (chain stitches) that constitute mesh. Slight tension should be applied to the pillars (chain stitch) while measuring each length of the mesh size. The mesh size shall be determined - 2/ Determination of overall wi
24、dth of nettina. One continuous length of pillars (chain stitches ) extending from the sewn edge selvaged edge to the opposite edge of the completed net shall be measured by hand. measuring the width of the net. Slight tension shall be applied while - 3/ Sections mended in accordance with “Mendina an
25、d Joininq“ shall not be classified as defects. Overall examination. be one roll or carton. The sample size (number of rolls selected as sample) and the acceptance number is shown on table II. The rolls selected for the yard by yard examination shall be used for this examination. Each of the followin
26、g defects shall be counted not more than once in each roll or carton examined: length of netting not within tolerances I/; selvaged edge not knitted or sewn as required; more than 10 mends and joins (total per roll of netting; color not as specified; overall uncleanness. The sample unit for this exa
27、mination shall - i/ Lenqth of net. The length shall be measured along the sewn edge and the edge shall be straightened by slight tension prior to measuring or measurements shall be made over a measuring clock under normal winding tension. Table II Sample Size Lot Size in Yards (3 feet) in rolls or c
28、artons Acceptance No. 1200 or less 3 1201 up to & including 3200 5 3201 up to & including 10,000 8 10,001 up to and including 35,000 13 35,001 up to and including 150,000 20 150,001 and over 32 - i/ If a lot contains fewer than 3 rolls, each roll shall be examined. 4 Licensed by Information Handling
29、 ServicesA-A-55L83 M 9999974 OLLi207L 604 M A-A-55 18 3 Packauina, Packinq, Markina, and Palletization Put-up. Unless otherwise specified in the procurement documents the cloth netting shall be furnished on individual rolls in 500 feet - 5 + 25 feet lengths. There shall be more than 10 joinings or m
30、ends (total) on each individual roll of netting. Unless otherwise specified, the weight of each roll shall not exceed 125 pounds, except when the weight of the specified yardage in one continuous piece exceeds 125 pounds. Packaqinu. chipboard tube. The tube shall have a smooth finish that will preve
31、nt the fibers of the chipboard from transferring to the cloth. Each roll of cloth, put up as specified, shall be wrapped with a 70-pound minimum basis weight kraft paper. The roll shall be wrapped so that the paper encircles the roll at least once with a minimum overlap of 3 inches, and the width of
32、 the paper shall be sufficient to fold over and protect the ends of the roll. Gummed paper tape, with a minimum width 2-1/2 inches shall be applied to the overlap seam the full length of the roll across each end. Cloth shall be rolled on a convolute or spiral wound Packinq. Rolls of fabric shall be
33、packed in a snug-fitting double-wall fiberboard container known as a double cover and shall consist of a body, or joined liner and two covers and shall conform to type CF, class domestic, variety DW, minimum grade 500. The depth of the cover shall be not less than 6 inches. Containers shall be strap
34、ped with three flat metallic straps not less than 1/2 by 0.020 inches. Containers exceeding 24 inches in length shall have an additional strap applied girthwise. The net weight of contents in all fiberboard containers shall not exceed 325 pounds. No packing is required when individual rolls are alte
35、rnately packed within a double-wall (2 ply) 50 pounds per ream, paper tube or bag or polyethylene wrap or tube with a minimum thickness of 0.004 inches. Markins. contract or purchase order, rolls shall be marked in accordance with MIL-STD-129. Each roll shall have a piece ticket (identification tag)
36、 affixed with a 5-ply minimum cotton string or a plastic tag hanger. and shall be legibly printed, using water insoluble ink, with the following information: In addition to any special marking required by the The tag shall have a reinforced eyelet Procurement agency National Stock number Finish or G
37、reige mill Item description Roll number Contractor Lot number Width Piece number Fiber Content Yardage Contract or purchase order 5 Licensed by Information Handling ServicesA-A-5533 9999974 0342072 540 A-A-55 18 3 Source of Government Documents. documents are available from: Copies of Military and F
38、ederal Standardization Documents Order Desk Bldg. 4D 700 Robbins Avenue Philadelphia, PA 19111-5094 Sources of Noncrovernment Documents. ANSI/ASQC 21.4 - Sampling Procedures and Tables For Inspection By Attributes (Applications for copies should be addressed to American National Standards Institute,
39、 1430 Broadway, New York, NY 10018- 3308. ) (Applications for copies should be addressed to American Society For Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.) Custodian: Army - GL Review Activity: Civil Agency Coordinating Activity : GSA - FSS Preparing Activity: DLA - CT User Activity: Project No. 8305-0481 6 Licensed by Information Handling Services
