1、MIL-C-21215A 1 9 9999306 0282726 2 -e MIL-C-21215A (OS) 9 June 1976 SUPERSCEDI NG MIL-C-21215(NOrd) 24 January 1958 MILITARY SPECIFICATION CRATES, PALLETS, AMMUNITION This specification is approved for use by the Naval Sea Systems Command (OS) Department of the Navy, and is available for use by all
2、Departments and Agencies of the Department of DefEnse. 1. SCOPE 1 .l Scope. hand1 ing, stowing, and transporting of ordnance items in intradepot operations. This specification covers ammunition pallet crates intended for 1.2 Classification. The pallet crates shall be of three sizes with inside dimen
3、sions for end, side, and height, respectively, as follows: Size 1 - 48 by 48 1/2 by 40 inches Size 2 - 40 by 46 1/2 by 40 inches Size 3 - 34 by 44 1/2 by 28 inches *2. APPLICABLE DOCUMENTS 2.1 for bids or request for proposal form a part of this specification to the extent specified herein. The foll
4、owing documents of the issue in effect*on the date of invitation SPECIFICATIONS : MILITARY MIL-P-116 Preservation, Packaging; methods of MIL-D-1000 Drawing, Engineering and Associated List STANDARDS : FE DE RAL FED-STD-66 FED-STD-101 Steel ; Chemical Composi ti n and Hardenabil i ty Preservation, pa
5、ckaging and packing materials: Test Procedures MILITARY: MIL-STD-22 Welding Joint Design MIL-STD-105 Sampling procedures and tables for inspection Licensed by Information Handling Servicesfl1L-C-2121, MI L- C-2 1 2 1 5A (OS ) MIL-STD-129 Mark MIL-STD-130 I den MIL-STD-248 We1 d 81 m 7797906 0282727
6、- - ng for Shipmen ification mark ng and Brazing qualifications DRAW I NGS : and Storage ng of U. S, M procedure and 1 i tary Property performance Naval Sea Systems Command (CODE IDENT. 10001) DL 2644148 Sling, Pallet Hoisting Mk 70 and Mod 2 (Copies of Specifications, Standards, Drawings, and Publi
7、cations required by suppliers in connection with specific procurement functions, should be obtained from the procurement activity or as directed by the Contracting Officer.) *2.2 Other Publications. to the extent specified herein. on the date of invitation for bids or request for proposal shall appl
8、y. The following documents form a part of this specification Unless otherwise indicated the issue in effect American Welding Society AWS A2.0 Welding AWS A3.0 Welding (Applications for cop 345 East 47th Street, Society Terms and Definitions es should be addressed to the American Welding Society, New
9、 York, New York 10017.) American Society for Testing Materials ASTM A386 Zinc Coating (Hot-Dip) on AssembledSteel Products (Applications for copies should be addressed to the American Society for Pennsyl vani a 191 03. ) Testing Materials, 1916 Race Street, Philadelphia, Uni form C1 ass i fi cat i o
10、n Commi ttee Uniform Freight Classification Rules and Regu (Application for copies of these uniform freight c ations assification rules and regulations should be addressed to the Uniform Classification Committee, Room 1106, 222 S. Riverside Plaza, Chicago, Illinois 60606.) 3. REQUI REMENTS 3.1 Descr
11、i tion. The pallet crate shall consist of a pallet to which are by hinges and locks to form an open top container. and ends shall be capable of being folder onto the pallet deck making a compact uniksuitable for efficient storage and safe tiering. in accordance with MIL-D-1000 as specified in 6.2.2.
12、 attache a+- si es and ends. The sides, ends, and pallet deck shall be connected When not in service the sides All drawings shall be -2- Licensed by Information Handling ServicesMIL-C-21215A 81 M 7779706 0282728 h MIL-C-Z1215A(OS) *3.2 Preproduction sample. In all respects not specifically covered b
13、y this specification, the pallet crates shall be equal to the preproduction sample. The design and structural characteristics of this sample will be evaluated for acceptability from a standpoint of safety, structural rigidity, and for conformance with the requirements specified herein. Unless other-
14、 wise specified, two preproduction samples of each size shall be submitted for examination, and test to determine compliance with all provisions of this specification. The first and second pallet crate of each size produced under the terms of a contract, following notice of award shall be submitted
15、for approval as a preproduction sample, and approval shall be obtained prior to fabrication of subsequent items. Fabrication of additional i tems prior to approval of the preproduction pallet crates will be at the contractors risk and such additional items are subject to rejection in the event they
16、fail to meet the requirements of this specification. Examination and testing of preproduction samples will be accomplished by the facility designated by the procurement activity, and the delivery schedule under the terms of the contract will be automatically extended in an amount equal to, but not e
17、xceeding, the time required for such testing and examination. *3.3 Material. The material used shall be standard steel in accordance with approvedGovernment specifications , where appl i cab1 e, and shall be selected in accordance with FED-STD-66. Steel specifications and commercial designations ref
18、erenced on respective drawings which have been furnished by the contractor and approved by the procuring activity shall be adhered to unless specific approval in writing covering departure therefrom is received from the procuring activity prior to manufacture or use. are not covered by applicable sp
19、ecifications shall be the best quality used in commercial practice and suitable for the intended purpose. 3.4 Capacity. Pallet crates of Sizes 1, 2, and 3 shall have a working load capacity of 4,000 pounds with a safety factor of 5-1. 3.5 Weight. its function, operation, or durability. following wei
20、ghts when tested as specified in 4.4.1 and 4.5.4.1: Materials which Minimum weight of the pallet crate is required without impairing The crates shall not exceed the Size 1 - 360 pounds Size 2 - 325 pounds Size 3 - 245 pounds 3.6 Provision for handling. 3.6.1 electric pallet truck, and hand pallet tr
21、uck on any side or end. Criteria for entry shall be based on electric pallet truck fork width of 9 inches, overall width of 27 inches, and collapsed height of 3-5/8 inches. There shall be no interference with pallet deck supports or base runner in proper entry or with- drawal of forks. 3.6.2 Slings.
22、 hooks on slings attached to a suitable strongback or spreader, of the pallet crate shall permit entry and use of Sling, Pallet Hoisting, Mk 70 Mod 2, NAVSEA Drawing DL 2644148. Fork and pallet truck. The pallet shall permit entry of fork truck, The pallet crate shall be capable of being hoisted by
23、four The deck supports -3- . .i . . .i . . I. : ,. . - . .-. i Licensed by Information Handling Servicescrate on another of the same size. This shall be accomplished by receises or notches in the outer deck supports which engage the tops of the sies of the pallet crate below. The notches or recesses
24、 shall be of sufficient depth so that the superimposed pallet crate is safely secured in position under the 8 degree slope test specified in 4.4.5.4. Tiering of up to four units shall be readily accomplished with normal fork truck “inching“ action and shall not require excessive time-consuming accur
25、acy on the part of the fork truck operator. During, and after being subjected to the test specified in 4.4.5.3 and 4.4.5.4, the crate shall not collapse or show component distortions that affect tiering stability, 3.8 Folding. The pallet crates shall be constructed to permit folding to a compact uni
26、t for efficient stowage when not in use or when shipping empty by rail or highway vehicle, Flat folding without interference may be accomplished by hinging one side directly to the deck and the other side to an extension above the deck. and secure load suitable for tiering without damage to the pall
27、et crates. It shall be possible to strap the folded units into a compact “3.9.1 Deck supports, outer. The pallet crate shall have four main deck supports, two to each side, which, in addition to the primary function of supporting the deck, shbll provide for tiering (see 3.7). The support shall permi
28、t bar member entry of the Sling, Pallet Hoisting Mk 70 Mod in the long- itudinal direction fo the pallet crate. “3.9.2 Deck supports, intermediate. There shall be an intermediate support at the center of each side and end secu-red to the base runner and deck. vision shall be made for entry of the ba
29、r member of Sling, Pallet Hoisting Mk 70 Mod 2 in the longitudinal direction of the pallet crate. 3.9.3 Base runner. There shall be a runner on the base perimeter of the pallet crate secured to the bases of the main deck supports and passing under and secured to the intermediate deck supports. The r
30、unner shall be 3/16 inches thick and formed for strength. This forming shall not introduce interference with hand and electric pallet trucks. The runners and main deck supports shall provide a flush bottom surface for stability with superimposed loads. The base runners shall serve to prevent overtur
31、ning of pallet crates from forks during operations due to the possibility of unbalanced loads. 3.9.4 Deck. have twades attached through a hinging arrangement. In order to permit flat folding of the sides and ends, one hinged ende of the deck may be extended ver- tically to provide flat folding of th
32、e side above the deck. The deck shall be adequately supported by subdecking structural members. If wire fabric is used for the deck, spacing between wires shall not exceed 2 inches. 3.9.5 Sides. The sides shall be structurally capable of supporting superimposed loads (see 4.4.5.3). If wire fabric is
33、 used, spacing between wires shall not exceed 2 inches. Each side shall have two hook eye plates, 4 by 6-1/2 by 1/4 inches thick with centrally located 1-3/4 inch hole, welded securely to the top of the side. The spacing between plates shall be adequate Pro- The pallet crate shall be of rigid constr
34、uction and shall Licensed by Information Handling ServicesMIL-C-Z1215A( OS) to insure longitudinal stability during hoisting. The sides shall be adequately hinged to the deck to permit folding onto the deck with no interference with each other or the ends. 3.9.6 Ends. The pallet crate shall be provi
35、ded with one removable end and one endmged to a side. If wire fabric is used, maximum spacing between wires shall be 2 inches. The bottoms shall have provision for interlocking with the pallet deck to prevent bulging under load. The removable end shall be hinged at the center to permit the top half
36、to be folded down upon the lower half to facilitate loading and unloading. The top half of the removable end shall be provided with an open type card holder for 5 inch by 8 inch cards, which will permit entries to be read without removal of the card. 3.9.7 Locks. The pallet crate shall be provided w
37、ith locks to secure the sides and ends in a vertical position. The locking feature shall be positive and shall not disengage under the vibrations and shocks encountered in handling and transportation. The location, spacing, and number of locks shall be adequate to assure that there are no failures,
38、deformations, or permanent sets in any part of the pallet crate evidenced from the pressure of the contained items. It shall be possible to release the lock under the pressure of shifted loads when necessary, but it is not intended to disengage locks under full load since item fall out will result (
39、see 4.4.4 and 4.4.5). 3.9.8 Interchangeabil i ty. Al 1 parts chal 1 be capable of interchangeable assembly without interference, binding, or misaligning. All parts comprising a permanently joined unit (as by welding) and the unit thus formed shall be capable of interchangeable joining in the assembl
40、ed unit and assembly. *3.10 Protective coatin . in accordance with ASTM 1386. The Pallet Crate shall be hot-dipped galvanized “3.11 Name late. All pallet crates shall be provided with a name plate the unit is folded. The name plate shall be of metallic material protected against corrosion to assure
41、permanency and legibility during the service life of the pallet crate. the following information: securely -% fastene between the hook eye plates on the side which is on top when It shall meet requirements of MIL-STD-130 and shall include PALLET CRATE, AMMUNITION SIZE (INCHES) capacity: “MFR: (Initi
42、als or Code Identification) 3.12 Strength, rigidity, stability. 3.12.1 Pushing and towing. The crates after being tested as specified in 4.4.2 shall show no weld failures or distortions of the deck or deck supports. - “3.12.2 Dro test. After being tested as specified in 4.4.4 the crates shall show n
43、o we 7aET- fa1 ures, or distortions of the deck or deck supports. n -5- Licensed by Information Handling Services“3.12.3 Impact test. When tested as specified in 4.4.4, the pallet crate shall show no weld failures or damage which would affect the usability and folding of the pallet crate. The interl
44、ock between the ends and pallet deck should not be disengaged. The locks which secure the sides and ends in a vertical position should not disengage during this test. “3.12.4 Vibration. When tested as specified in 4.4.5, the crates shall still be capable of containing or supporting the intended cont
45、ents, and shall not interfere with handling equipment. Further, there shall be no evidence of weld failures or component failures. After this test the locks shall still be capable of being disengaged with load shift against the ends. After testing as specified in 4.4.5.1, there shall be no component
46、 failures or distortions that prevent ready assembly or usabi 1 i ty. “3.12.5 Hoistin , The crate shall contain a load of 20,000 pounds for at least 5 minutes + wit out complete failure or parting of component parts what would permit loss of intended contents when tested as specified in 4.4.5.2, 3.1
47、2.6 Proof loading. After testing as specified in 4.5.4.2, the crates shall show no weld failures or component distortions evidenced by visual examinations. 3.13 Workmanshi All surfaces and edges shall be smooth and free from sharp edges, -e roug spots, and similar defects that could possibly damage
48、the contents of the pallet crates, interfere with loading or unloading, or be a hazard to operating personnel. 3.13.1 Steel fabrication. free from breaks and sharp bends. and accurately. Corners shall be squared and true. All bends of a major character Steel used in the fabrication of equipment shal
49、l be Shearing and clipping shall be done neatly shall be made-with metal dies or fixture Holes shall be accurately punched or dri 3.13.2 Welders and welding. 3.13.2.1 Welders, Before assign specification, the contractor sha names of welders to be employed O 6.2.2) that each of these welders to insure uniformity of size and shape. led and have the burrs removed. welder to work covered by this de the contracting officer with the rk toaether with certification (see ng any 1 prov the w has passed qalification tests as prescribed by MIL-STD-248 for the type of welding operatio
