1、 - - MIL-STD-Lbb7B = 9999911 0480280 854 9 MIL-STD-1667B 18 January 1995 SUPERSEDING MIL-STD-1667A 18 November 1983 MILITARY STANDARD PROVISIONS FOR EVALUATING QUALITY OF HOODS: COLD WEATHER, EXTREME COLD WEATHER, AND FLYERS AMSC N/A DISTRIBUTION STATEMENT A. FSC 8415 Approved for public release; di
2、stribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1667B DEPARTMENT OF DEFENSE Washington, DC 20301 Provisions for Evaluating Quality of Hoods; Cold Weather, Extreme Cold Weather, and Flyers MIL-STD-1667B 1. This Militar
3、y Standard is approved for use by all Departments and Agencies of the Department of Defense. 2. Beneficial comments (recommendations, 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 Tex
4、tiles Directorate, Attn: DPSC-FQSD, 2800 South 20th Street, Philadelphia, PA 19145-5099, by using the Standardization Docunent Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. ii Provided by IHSNot for ResaleNo reproduction or networking permitted without licen
5、se from IHS-,-,-MIL-STD-Lhh7B W 9999933 0480282 627 W MIL-STD-1667B FORWARD This standard provides a standardized procedure for evaluating the quality of coated fabric-type hoods procured for the Department of Defense. It is intended to list, in a single document, defects irrespective of fabrics (i.
6、e., wool, cotton, or synthetic) or end use. The objectives of this standard are to: a. Provide standard descriptions for hood defects. b. Standardize examination requirements. c. Reduce the size of each hood specification. As of the date of app.rova1 of this document, the following specifications wi
7、ll reference this standard: Specification MIL-H-17024 MIL-H-29101 MIL-H-43555 MIL-H-85037 Title Hood, Cold Weather, Impermeable (Shore) Hood, Extreme Cold Weather, Impermeable Hood, Extreme Cold Weather, W/Synthetic Hood, Winter, Flyers Fur Ruff, OG-107 iii Provided by IHSNot for ResaleNo reproducti
8、on or networking permitted without license from IHS-,-,-1. SCOPE MIL-STD-Lbb7B 9.LL 0480283 563 MIL-STD-1667B 1.1 Purpose. The purpose of this standard is to provide standardized provisions for evaluating the quality of coated fabric and fabric hoods. 1.2 Application. This standard will be made appl
9、icable to contracts by reference in the appropriate hood specification. 2. REFERENCE DOCUMENTS 2.1 Issue of documents. The following documents, of the issue in effect on the date of invitation for bids or request for proposal, form a part of this standard to the extent specified herein. SPECIFICATIO
10、NS MIL I TARY MIL-H-17024 MIL-H-29101 MIL-H-43555 MIL-H-85037 STANDARDS FEDERAL FED-STD-4 MILITARY MIL-STD-105 MIL-STD-109 Hood, Cold Weather, Impermeable Hood, Extreme Cold Weather, Hood, Extreme Cold Weather, Hood, Winter, Flyers ( Shore ) Impermeable W/Synthetic Fur Ruff, OG-107 Glossary of Fabri
11、c Imperfections Sampling Procedures and Tables for Inspection by Attributes Quality Assurance Terms and Definitions (Copies of specifications, standards, drawings, and publications required by contractors in connection with specific procurement functions should be obtained from the procuring activit
12、y, or as directed by the contracting officer.) 3. DEFINITIONS 3.1 Fabric defects. The fabric defect definitions applicable to the standard are described in FED-STD-4. Fabric defects shall be clearly visible when examined at a distance of 3 feet (.91 m). 1 Provided by IHSNot for ResaleNo reproduction
13、 or networking permitted without license from IHS-,-,-MIL-STD-1667B 3.2 Knots and slubs. Only knots and slubs that exceed the limits specified in the basic cloth specification and are clearly visible when examined at a distance of 3 feet shall be scored as defects in evaluating quality of the hoods.
14、 3.3 Quality assurance terms. Definitions of quality assurance terms and procedures, where applicable, shall be in accordance with MIL-STD-105 and MIL-STD-109. 3.4 Open seam. The seam shall be classified as open when one or more stitches joining a seam are broken, or when two or more continuous skip
15、ped or runoff stitches occur. On double-stitched seams, a seam is considered open when either side is open. 3.5 Raw edse. Raw edge is defined as any edge not finished as specified, including any protruding edge on the outside of the hood. 3.6 Defective button. A button shall be considered defective
16、when it has a sharp, rough, cracked, or split edge; scratch, dent, blemish, imbedded foreign matter, or is misshapen. in this standard are defined as follows: 3.7 Outside-inside. The terms “outside“ and “Inside“ as used Outside: Any part of the hood that is visible when the completely fastened and c
17、losed hood is examined. The visor and storm flap (curtain) shall be considered as the outside of the hood. Inside: Any part of the hood that is not visible when the completely fastened and closed hood Is examined. 4. GENERAL 4.1 General. This standard contains the provisions for end item examination
18、, dimensional examination, and packaging inspection of coated fabric and fabric hoods. If there are any inconsistencies between the requirement of the appropriate hood specification and the provisions of this standard, the specification shall control. This standard assigns to the listed defects, poi
19、nt values of 1, 2, or 3, depending on severity. The higher point values are assigned to those defects having the more detrimental effect on the appearance or serviceability of the item. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-Lbb7B
20、99999LL 0480285 336 MIL-STD-1667B 5. SAMPLE AND INSPECTION PROVISIONS 5.1 End item examination. The hoods shall be examined and all defects shall be penalized as indicated in Table II of this standard. The sample size shall be based on the lot size, and the acceptable point values shall be as specif
21、ied in Table I. The sample unit shall be one hood. The lot shall be unacceptable if: (a) The point values for 3 and 2 point defects exceeds the applicable maximum acceptance point value OR (b) Point value for total (3, 2, and 1 point) defects exceeds the applicable maximum acceptance point value. 5.
22、2 Dimensional examination. The appropriate number of hoods, determined from the table below, shall be examined for conformance to the dimensional requirements cited in the table of measurements of the appropriate hood specification. When a measurement deviates from a dimension and tolerance specifie
23、d, the hood shall be penalized one point. The lot shall be unacceptable if the total point value resulting from this examination exceeds the maximum acceptable point values. Each hood size present in the lot should be represented in the sample. Lot size Up thru 500 501 thru 3,200 3,201 thru 35,000 3
24、5,001 and up Maximum acceptable Sample size point value 8 13 20 32 5.3 Packaaina inspection. An examination shall be made to determine that preservation, packing, and marking requirements are in compliance with Section 5 of the appropriate hood specification. Defects listed, as follows, shall be sco
25、red one point. The sample size for this examination shall be five shipping containers fully prepared for delivery with the exception that they need not be sealed. Defects of closure listed below shall be examined on shipping containers fully prepared for delivery. The lot shall be unacceptable if on
26、e or more points are scored for this examination. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1667B Damins Defect Marking (exterior Omitted, incorrect, illegible, improper and interior) size, location, sequence, or method of application
27、 Ma teria 1 s Workmanship Content Any component missing, damaged, or not as specified Inadequate application of components, such as: incomplete closure of container flaps, loose strapping, improper taping, inadequate stapling. Open on non-continuous heat-sealed seams of polyethylene bag, or air hole
28、s omitted. Bulging or distorted container. Number of bundles or intermediate packages per container is more or less than required. intermediate package is more or less than required. L/ Size shown on one or more hoods not as specified on shipping container. - i/ (when applicable) Number of hoods per
29、 bundle or - i/ For this defect, one intermediate package from each container in the sample shall be examined. 6. INSPECTION 6.1 Inspection procedures. Inspection procedures, except for sampling plans, shall be as specified in MIL-STD-105, except where otherwise indicated in this document. 6.2 Initi
30、ation of inspection. Normal inspection will be used at the start of the inspection unless otherwise directed by the procurement quality assurance element administering the contract. 6.3 Continuation of inswction. Normal, tightened, or reduced inspection shall continue unchanged on successive lots ex
31、cept where switching procedures in 6.4 require change. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1667B 6.4 Switchins procedures 6.4.1 Normal to tiuhtened. When normal inspection is in effect, tightened inspection shall be instituted w
32、hen two out of five consecutive lots have been rejected on original inspection (i.e., ignoring resubmitted lots for this procedure). 6.4.2 Tiuhtened to normal. When tightened inspection is in effect, normal inspection shall be instituted when five consecutive lots have been considered acceptable on
33、original inspection. 6.4.3 Normal to reduced. When normal inspection is in effect, reduced inspection shall be instituted providing that all of the following conditions are satisfied: a. The preceding 10 lots have been on normal inspection and none have been rejected on original inspection; and b. T
34、he total number of points for 3 and 2 point defects in the samples from the preceding 10 lots is equal to or less than 60 percent of the total maximum acceptable point values for 3 and 2 point defects from the preceding 10 lots; and defects in the sample from the preceding 10 lots is equal to or les
35、s than 75 percent of the total maximum acceptable point values for 3, 2, and 1 point defects from the preceding 10 lots; and d. Production is at a steady rate; and e. Reduced inspection is considered desirable by the procurement quality assurance element administering the contract. c. The total numb
36、er of points for 3, 2, and 1 point 6.4.4 Reduced to normal. When reduced inspection is in effect, normal inspection shall be reinstituted if any of the following occur on original inspection: a. A lot is rejected; or b. A lot is considered acceptable but exceeds the applicable first value (see L/ to
37、 Table I); or c. Production becomes irregular or delayed; or d. Other conditions warrant that normal inspection be reinstituted. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-, 4 6 9 14 22 34 50 73 Normal Inspection 6 12 22 35 51 74 108 158 Tight
38、ened Inspection Reduced Inspection Lot size Sample size Maximum acceptable ooint value 3 more than 1 inch (largest dimension in any direction): -on outside 2 3 1 2 2 1 2 1 2 1 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-Lbb78 = 9999933
39、0480270 7T3 m MIL-STD-1667B TABLE II. Classification of defects (contd.) I Defect Point Value I A. GENERAL DEFECTS (contd.) II. SHADED PARTS a. On outside: 1. Variation in shade within a part or 2. Variation in shade within a part or between two or more parts (except parts which may be cut from ends
40、) 2 parts cut from ends badly shaded 1 III. CLEANNESS a. Spot or stain on outside clearly noticeable (largest dimension in any dimension): 1. Up to 3/8 inch, inclusive 1 2. More than 3/8 inch 2 b. Thread ends - on outside: 1. More than four but not more than six 2. More than six not trimmed to less
41、than not trimmed to less than 1/2 inch 1 1/2 inch 2 c. Loose threads not removed on major portion of hoods 1 d. Two or more shade or size tickets not removed 1 e. Any size or shade marking on outside; score as spot or stain (see IIIa) - f. Basting thread visible on outside of hood 1 IV. COMPONENTS A
42、ND ASSEMBLY a. Any component part or required operation omitted (unless otherwise classified herein) 3 b. Any component not as specified (type, size, color, etc.) 3 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-STD-Lbb7B 9999911 0480293 b3T
43、MIL-STD-1667B TABLE II. classification of defects (contd.) Defect Point Value A. GENERAL DEFECTS (contd.) IV. V. VI. COMPONENTS AND ASSEMBLY (contd.) c. Any component part tight, twisted, distorted, pleated or puckered (unless otherwise classified herein) d. Any operation not as specified (unless ot
44、her- wise classified herein) e. The edge of any component part required to be forced out having folds of more than 1/8 inch (unless otherwise classified herein) CUTTING a. Any component part not cut in accordance with specified pattern or directional lines on patterns, or not in accordance with spec
45、ification requirements b. Twill line of any outside part not running in specified direction SEAMS AND STITCHING a. Accuracy of seaming: 1. 2. 3. 4. 5. 6. Seam puckered (unless otherwise classified) Seam irregular, pleated, or wavy (unless otherwise classified) Any part of hood caught in unrelated op
46、eration or stitching End of stitching when not caught in another seam or stitching not back- stitched as specified (except attaching labels) Stitching overlapping ends of thread break less than 1/2 inch or more than 1 inch Ends of a continuous line of stitching overlapped less than 1/2 inch or more
47、than 1 inch 2 2 2 3 3 1 1 2 1 1 1 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TABLE II. Classification of defects (contd.) Defect Point Value A. GENERAL DEFECTS (contd.) VI. SEAMS AND STITCHING (contd.) a. Accuracy of seaming: (contd.) 7. Shade
48、 of thread used on outside not 8. Needle perforation visible on outside as specified b. Gauge of stitching and seam allowance: 1. 2. 3. 4. Gauge irregular Gauge not within range specified or varies more than 1/16 inch when no range is specified (score only when the condition exists on more than 1/2
49、the length of the seam) Edge, top, or raise stitching sewn too close to edge, resulting in damage to cloth Seam allowance not as specified by 1/8 inch or more (Score only when the condition exists on more than 1/2 the length of the seam) (as applicable) c. Open seams: 1. 2. On outside: (a) -up to 1/2 inch, inclusive (b) -more than 1/2 inch up to 2
