DLA MIL-DTL-10884 H-2005 FASTENERS SNAP《扣件》.pdf

1、 INCH-POUND MIL-DTL-1084H 20 July 2005 SUPERCEDING MIL-F-10884G 21 October 1994 DETAIL SPECIFICATION FASTENERS, SNAP This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers metal snap fasteners intended for te

2、mporary joining of detachable components and parts of clothing, equipage and tentage items. 1.2 Classification. Snap fasteners will be of the following styles, finishes and sizes as specified (see 6.2) Style 1 Large curtain type Style 1B Mudproof curtain type Style 2 Regular wire spring clamp type S

3、tyle 2A Small wire spring clamp type Style 3 Pronged ring head type Style 4 Three way locking type Finish 1 Bright brass Finish 2 Black Finish 3 Nickel plate Finish 4 Bright chrome plate Finish 5 Enamel (color specified by purchaser) Size (see 3.2.3) Comments, suggestions, or questions on this docum

4、ent should be addressed to: Defense Supply Center Philadelphia, ATTN: DSCP-ITAA, 700 Robbins Ave, Philadelphia, PA 19111-5096 or emailed to dscpg color or finish is not as specified, unless excepted (e.g., glossiness of head or stud body; scratch, dig, or abrasion exposing bare metal; areas of corro

5、sion; enamel coating not uniform over the top and visible portion of the edge of the shell of the button cap; enamel coating has sags, runs or streaks, or is not smooth). Design, construction and workmanship, general (applicable to all components and assemblies): Any component missing, any component

6、 not fabricated of the applicable referenced materials; not fabricated as specified; not clean ( i.e., evidence of oil, grease or dirt); sharp edge or burr; puncture, malformation, deformation or fracture. Assembling data: Missing, as applicable; incomplete or illegible. Marking (identification): Mi

7、ssing, incomplete, illegible, misspelled or incorrect; not permanent. 4.2.4 End item dimensional examination. The end items shall be examined in accordance with ASTM F1470 for conformance to the dimensions specified on the drawings that can be determined on the end item without damaging or disassemb

8、ling the end items. Any dimensions not within the specified tolerance shall be classified as a defect. Sample size shall be in accordance with size “B” requirements. 4.2.5 End item testing. The end items shall be tested for the characteristics listed in Table I. The methods of testing specified in F

9、ED-STD-191 wherever applicable and as listed in Table I shall be followed. Sample size shall be in accordance with ASTM F1470 size “A” requirements. 8Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-10884H TABLE I End Items TestingCharacterist

10、ic Requirement reference Test method Paragraph Number of samples tested ResultreportFunctioning of assembled fastener 3.2 4.3.1 1 Pass/fail Resistance to stress corrosion cracking 3.3 4.3.2 1 Pass/fail Enamel finish: Gloss 3.4.5.1.1 4.3.3 1 Pass/fail Resistance to hot soap solution 3.4.5.1.2 4.3.4 1

11、 Pass/fail Solvent resistance 3.4.5.1.3 4.3.5 1 Pass/fail Resistance to enamel chipping 3.4.5.1.4 4.3.6 1 Pass/fail Resistance to brittleness 3.4.5.1.5 4.3.7 1 Pass/fail 4.3 Methods of inspection. 4.3.1 Function test. The male and female half of the fastener shall each be attached to a fabric or mat

12、erial for each application in accordance with the fastener manufacturers recommendations for attachment method, foundation thickness, and item construction. Determine whether rotation, if any, of any part prevents effective assembling or functioning when tested as specified herein (see 3.2). After a

13、ttachment, the male and female halves of the fastener shall be visually inspected and the attachments shall be subjected to manufacturers recommended attachment strength tests and shall be at or above specified values. Cracks in the rolled eyelet portion of the attached male or female halves of the

14、fastener shall not constitute a test failure. The male and female half shall be manually snapped together and shall snap and unsnap at the point of periphery normally used when opening and closing. The fastener shall be manually operated as stated not less than four times to determine compliance wit

15、h 3.2. Any sample not snapping or unsnapping shall constitute failure of this test. 4.3.2 Stress corrosion cracking test. The brass snap fastener components in the half-hard to harder temper shall be tested for stress corrosion cracking in accordance with ASTM B154. Any sample having evidence of str

16、ess corrosion cracking shall constitute failure of this test. 4.3.3 Enamel gloss test. The enamel gloss of the button cap shell shall be tested by visually comparing against a black or brown, as applicable, enamel plain panel whose gloss has been determined to be 40 in accordance with ASTM D523. Any

17、 button cap shell having a gloss greater than 40 shall constitute failure of this test. 4.3.4 Enamel resistance to hot soap solution test. Th resistance of the enamel on the button shall be tested by immersing the button in a 5 percent soap solution maintained at 195 degrees F 5 degrees, for a perio

18、d of not less than 2 hours. The soap shall conform to ASTM D498. After immersion, the button shall be rinsed and the enamel on the cap shell examined for differences in appearance from the unimmersed control version. An attempt shall be made to furrow through the enamel with the thumbnail. Any diffe

19、rence in enamel film appearance, except for slight color change or slight dulling, or any enamel film having evidence of thumbnail furrow through the film shall constitute failure of this test. 9Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL

20、-10884H 4.3.5 Enamel resistance to solvent test. The resistance of the enamel on the button to a solvent shall be tested by immersing the button in Stoddards solvent maintained at 70 degrees F 5 degrees, for a period of not less than 20 minutes. After immersion, the button shall be dried and the ena

21、mel cap shell surface examined visually for changes in appearance from an unimmersed control specimen. An attempt shall be made to scrape the enamel film with the thumbnail. Any difference in enamel film appearance, except for slight loss of gloss, or any enamel film having evidence of softening due

22、 to scraping with thumbnail shall constitute failure of this test. 4.3.6 Enamel chipping test. The resistance of the enamel on the button to withstand attachment operations shall be tested by attaching a button and applicable socket to a suitable fabric using the contracts recommended attaching devi

23、ce. After attachment, the enameled surface of the button shall be visually thumbnail shall constitute failure of this test. 4.3.7 Enamel resistance to brittleness test. The resistance of the enamel on the button to brittleness shall be tested by holding a knife blade at 30 degrees from the horizonta

24、l and drawing it across the enameled surface making a furrow. Th edges of the furrow shall be examined visually. Any evidence of jagged furrows shall constitute failure of this test. 5. PACKAGING 5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the contrac

25、t or order (see 6.2). When packaging of material is to be performed by DoD or in-house contractor personnel, these personnel need to contact the responsible packaging activity to ascertain packaging requirements. Packaging requirements are maintained by the Inventory Control Points packaging activit

26、ies within the Military Service or Defense Agency, or within the military services system commands. Packaging data retrieval is available from the managing Military Departments or Defense Agencys automated packaging files, CD-ROM products, or by contracting the responsible packaging activity. 6. NOT

27、ES (This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.) 6.1 Intended use. The snap fasteners are intended for use on clothing, tentage, equipage and leather items. When specified, the supplier may furnish data for attaching snap fasteners

28、to end use articles. Assembling data may include the suppliers recommendations for the attaching tool (e.g., chuck, hand punch, die, hand screw driver or special equipment). 6.2 Acquisition requirements. Acquisition documents must specify the following: a. Title, number and date of this specificatio

29、n. b. Issue of DODISS to be cited in the solicitation, and if required, the specific issue of individual documents referenced (see 2.1.1 and 2.2). c. Style and finish of snap fastener (see 1.2 and 3.4). d. Application (end use article data on which fastener is to be used), if the application require

30、s other than regular spring action (e.g., “hard” or “soft” action is required) (see 3.2.1) e. Whether complete fastener or half fastener (male or female half of fastener), or individual fastener part is required (see 3.2.3). f. Specific construction required if construction is not to be at the contr

31、actors option 1. Style 2 and 2A, construction A, B, C or D (see 3.2.3.2). 2. Style 3, construction A, B, C or D (see 3.2.3.2). 3. Style 4, construction A, B, C or D (see 3.2.3.2). g. Component (s) and size(s) of fastener components required (where applicable). 1. Style 1 and 1B female components (se

32、e 3.2.3.1.1) 2. Style 1 male components (see 3.2.3.1.2) 10Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-10884H 3. Style 1B male components (see 3.2.3.1.3. 4. Style 2 and 2A female components (see 3.2.3.2.1) 5. Style 2 and 2A male components

33、 (see 3.2.3.2.2) 6. Style 3 components (see 3.2.3.3). 7. Style 4 components (see 3.2.3.4) h. When all components of style 2 and 2A fasteners, except for optional provisions, are to be chrome plated (see 3.4.4.2). i. When assembling data is required (see 3.6) 6.3 Color, commercial dark. Commercial da

34、rk color is normally dark in color, approaching black, but with permissible latitude as to shade and tone (e.g., bronze-tone black, blue tone black and dark gray). 6.4 Styles, drawings and military standards. The styles with applicable drawings and comparable military standards are listed as follows

35、: Style Drawing Military specification Sheet (MS/NASM) 1 4-1-173 and 4-1-174 MS27977 1B 4-1-183 MS27979 2 DSCP DWG 02936, DSCP DWG NASM27980 2A DSCP DWG 02935 NASM27981 4 4-1-181and 4-1-182 MS27983 3 DSCP DWG 02754 A-A-55621 6.5 Supercession data. Style 3 fastener for 17 ligne was deleted and replac

36、ed with Style 3 for 16 ligne. Style 1A (small curtain type) cancelled. Style 5, 6 and 7cancelled. Drawing No. 4-1-184, 4-1-185 and 4-1-186 deleted. Military standards MS27984, MS27985 and MS29786 deleted. 6.6 Subject term (keyword) listing. Catch Snap, fastener Clasp Hook Join Secure 6.7 Changes fro

37、m previous issue. Marginal notations are not used in this revision to identify changes with respect to the previous issue due to the extent of the changes 11Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-10884H Custodians: Preparing Activity

38、: Army GL DLA-IS Navy AS Air Force 99 (Project 5325-1179) Review activities: Army AR, AV, CR4, MI Navy OS Air Force 71 DLA CT NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at http:/assist.daps.dla.mil/. 12Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-