1、MILITARY SPECIFICATIOIJ BOXES, APlUl?ITION PACKING : WOOD, (W/PLYWOOD BOP ancl Staples Screws, Tapping and DrLve Adhesive, Casein-Type: Ifater and !Told Resistant Textile Test Nethods Plywood, Plat Panel Wood preservative, Water Repellent Rope, Yarn arid %irie, Bast Fiber Strapping, Plat, Steel MILI
2、TARY NIL-A-2550 - Amunition and Special Weapons, General Specification for. MIL-W-6110 - Wood; Determination of Noisture Content of. SFANDARDS MILITARY ML-STD-105 - Safipling Procedures and Tables for MIL-STD-109 - Quality Assurance !?erne and Definit ions. I-IIL-STD-329 - Harking for Shiprient and
3、Storage. MIL-STD-1168 - MIL-STD-1235 - Inspection by Attributes (ARC-STD-105 1 Lot Numbering of Amunit ion. Single and Multilevel Continuous Sampling Procedures and Tables for Inspection by Attributes. 2 - -* Provided by IHSNot for ResaleNo reproduction or networking permitted without license from I
4、HS-,-,-MIL-B-48024 (MU) DRAWINGS ARMY 8796520 - Swivel Assembly 8797512 - Swivel Assembly 9266798 - Hinge, Pinless (Tang and Receiver) MS35492 - Screw, Wood, Flat Head, Cross Recessed bis35494 - Screw, Wood, Plat Head MS51862 - Screw 9266797 - Hasp Tapping - Thread Forming, Type AB, Flat 62O CSK HU,
5、 Cross Recessed PUBLICATIONS DEPARTMENT OF COMMERCE PS-1 - Softwood, Construction and Industrial CS-157- Pine Plywood (Ponderosa Pine, Sugar Pine, and Idaho White Pine) (Copies of drawings, specifications, standards, and publications required by contractors in connection with specific procurement fu
6、nctions should be obtained from the procuring activity or as directed by the contracting officer. ) 3. REQUIREMENTS 3.1 Material 3.1.1 Wood.-The species of wood acceptable under this speci- If a group is not specified, fication are classified in groups as follows. When a group is specified, any wood
7、 in that group may be used unless otherwise specified by the procuring activity. woods from any group may be used. Alder, red Aspen (Poplar) Basswood Buckeye Butternut Cedara Chestnut Cottonwood GROUP I Cucumbertree Fir (Abies sp, ) Pine (except Southern Spr uc e Willows Yellow Poplar Cypress yellow
8、) 3 , -, Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GROUP II I Douglas Fir Hemlock GROUP III Ash (Cabinet texture)b Cherry Eln, soft Gum, red or black Larch (Tamarack) Pine, Southern Yellow Magnolia hlaple, soft Sycamore Tupe lo, water GROUP IV
9、Ash (tough texture)c Beech Birch Eln, hard Hackberry I i c kor y Locust Maple, hard Oak Pecan NOTE: a. For Group I woods, when lumber 5/8 inch in thickness or less is specified on the applicable drawing or specification Cedar and Willow shall not be used. b. Average weight 2800 pounds pel. 1000 boar
10、d feet. C. Average weight over 3500 pounds per 1000 board feet. 3.1.1.1 Moisture content.-The rmisture content of the lumber after seasoning and prior to the application of preservative treatment, shall not be greater than i8 percent nor less than 12 percent of its oven dry weight as evidenced by te
11、st specified in 4.4.2. 3.1.1.2 Finish.-Lumber shall be cut to length and surfaced on two sides. Edges shall be straight and square with the surface of the lumbeiB. lumber may be surfaced on one side, and resawn on the other side; the resawn surface shall face to insicle of the box. with exterior glu
12、e shall be used. able, a better exterior grade nay be substituted. utilized for top and bottom panels sim11 neet the standard require- ments outlined in Department of Cormerce Pubiication PS-1 for Group E plywoods and CS-157 foia Group C piywoos after cutting to size. Unless otherwise specif-ed b:!
13、the procuring activity, 3.1.2 Plywood.-Group U or C, container :racle standard interior If sgecifie grade is not avail- 3.1.2.1 Grades A, and C Boxes: TOI) an botton panels.-Plywood 4 . I_z_ . . e- *. a Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,
14、-MIL-B-98024 1 m 7779706 0285723 m m,-% 48 o 24 (MU ) 3.2 Defects standards.-The following defects standards shall apply to lumber as cut to size as assenbled in the box. 3.2.1 Season check.-Slight season checks occuring in the center portion of a piece in a finished box shall be permitted provided
15、they do not extend through the piece in which they occur. piece shall be considered as splits (3.2.2) except that when adjacent to a knot they will be considered a component part of an incased knot defect (3.2.3.2). Season checks occuring at the end of the pieces shall be cause for rejection unless
16、repaired by corrugated fasteners an by additional nailing in accordance with the procedure outlined for splits. Season checks which extend through the 3.2.2 Splits (6.3). 3.2.2.1 Splits extending entire length of piece.-Splits extending the entire length of the piece shall be permitted for sides, pr
17、ovided the width of the piece measured from the split is 1-1/2 inches or greater. and location to provide a minimum of two complete corrugations on each side of the split and shall be spaced 3 inches minimum on centers. Corrugated fasteners shall be flush with the surface of the board into which the
18、y are driven, and shall not be driven into the countersinks provided on the inner surface of boxes for receiving or protection of anmunition conponents. When the width measured from the split to the edge is 2-1/2 inches or greater, the resulting unjointed member may be considered a board as defined
19、in 3.8.2. Fasteners shall have a length 3.2.2.2 Splits diverging to edge of piece.-Splits diverging to an edge of a piece shall not be permitted. Splits extending less than the entire length of the piece and not diverging to an edge of a piece shall be permitted for sides and ends provided that if t
20、he split were extended the resulting pieces would comply with minimum requirements of 3.2.2.1. Splits exceeding three inches 3n length shall be repaired with corrugated fasteners, as required in 3.2.2.1. 3.2.2.3 Splits extending through nail holes.-Splits in the ends of boards which extend through a
21、 nail hole and comply with the requirements of 3.2.2.1 and 3.2.2.2 shall be corrected by additional nailing. Splits which pass through a nail hole and do not exceed three inches in length are acceptable provided the split does not terminate in the edge of the board and correction is made by addition
22、al nailing. Splits adjacent to the edge of board which extend through a nail hole ai-e acceptable provided the split does no% exceed one inch in length and does not terminate in the edge of the board. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,
23、- _. MfL-B-48Q24 (MU) 3.2.3 Knots and holes. 3.2.3.1 Sound, tight knots shall be permitted provided the dimension measured across the board is not greater than one-third the width of the boards in Grade A boxes, nor more than 1/2 the width of the board in Wade B boxes, nor more than 2/3 the width of
24、 the board in Grade C boxes. Knots which occw in nailed edges or underneath hardware, shall be cause for rejection of the boxes if they crack or break out. 3.2.3.2 Knot holes, loose knots or worm holes larger than 5/8 inch across the largest dimension shall be cause for rejection unless repaired in
25、accordance with 3.2.3.4. holes less than 1/16 inch in diameter shall be permitted in any piece provided no concentration of such holes exceeds five in any square inch of surface in Grade A boxes, or ten in Grade B boxes. Individual knot holes, loose knots or worm holes, ranging in size from 1/16 inc
26、h to 5/8 inch across the largest dimension shall be permitted provided they are spaced not less than 12 inches apart in Grade A boxes, six inches in Grade B boxes or three inches in Grade C boxes. Small 3.2.3.3 A knot extending through the thickness of the board which is encased (separated for more
27、than 1/2 of the circumference from the surrounding wood by hard pitch or checks) shall be considered a loose knot. If a portion of 8 knot has been removed from an edge of a board or piece in manufacture, the basis for judging the knot for encasement shall be 1/2 the remaining circumference. Season c
28、hecks extending through the thickness of the wood and so placed as to cause breaking out of a portion of a knot which would result in a hole larger than 5/8 inch across the largest dimension, shall be cause for rejection. Repair of holes and knots.-Holes and loose knots may be repaired with solid wo
29、oden plugs or plywood disks, except that the application of a nail, screw, or corrugated fastener in a plug or disk utilized in a finished box shall be cause for rejection. Plywood utilized in disks shall comply with Federal Specification NI?-P-530. The plugs shall be snug fit and disks shall be fro
30、m a snug fit to 1/64 inch maximum clearance. as the board or piece in which inserted. disks shall be drilled only to a depth necessary to accomodate thickness of the disk. Plugs and disks shall be glued on all butting surfaces with glue conforming with Federal Speclfication MMM-A-125. 3.2.3.4 Plugs
31、shall be of the same thickness Counterbores for Holes plugged with a solid plug of 6 : . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-B-q802q l m 999990b 0285925 I W MIL-B-48024 (MU) the same thickness as the piece shall be cause for rejection
32、 if the plug diameter measures more than 1-1/2 inches, or if the diameter is greater than half the width of the piece. Plywood disks which partially extend through the thickness of the piece shall be cause for rejection if any of the following conditions exist: a. The knot covered, measures more tha
33、n two inches b. The dianeter of the disks exceeds 2-/2 inches. C. The disk has a bearing on solid wood of less than d. The disk thickness is less then 1/4 inch or more across its greatest diameter. 1/8 inch at any.point on its circumference. than one-half the thickness of the piece. Holes or loose k
34、nots may be considered plugged if covered by a cleat, providing that any portion not covered neasiules no more than 5/8 inch in any direction. If a nail in the cleat enters such a hole or knot, the box shall be rejected unless corrected by additional nailing. As an alternate material to the plywood,
35、 for the manufacture of disks, lumber of the same species as that repaired is acceptable provided that the direction of grain in the disks is not parallel to the axis of the disk. 3.2.3.5 Other defects (see 6.4).-At least one surface on each piece; i.e., the surface to be placed on the outside of th
36、e box, shall be sufficiently smooth and free of stain to permit legible marking. Wane (see 4.3.2.1.11) shall not exceed 1/2 inch in width on the surface on which it appears for one-sixth the length or one-half the thickness. the disintergration is readily recognizable shall be cause for rejection. E
37、vidence of decay in which 3.2.4 Box cleats. 3.2.4.1 Grade A box end cleats.- The divergence of the grain in each end cleat shall not exceed one inch in 10 inches of length, In the end cleats when handles are used, the type number and size of knots in the area defined by the width of the end cleat an
38、d the lengthwise limits of the groove wiZ1 be as foliows: a. A mximum (max.) of 10, less intergrown knots, not larger than 1/16 inch wide by 1/8 inch long spaced 1/2 inch minimum (min.), center to center. inch across the widest dimensions. b. A single well intergrown knot not more than 1/11 7 Provid
39、ed by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1 MIL-B-Y02 BZ W 9399906 0285926 3 When knots as specified in are present, a knot as Specified in nbn shall not be permitted. OF when handles are not used, solid, well intergrown knots, not more than one-four
40、th the width of the pieces across the widest dimension shall be permitted provideci that if there is more than one such knot, they shall not be closer together than five inches. Knots of any type, whether loose or solid, in the ends of any cleats, shall be permitted, provided they are entirely conta
41、ined within an area extending not mom than 1 inch from the end of the cleat, In other areas of such cleats , 3.2.4.1.1 The exposed edge at the bottom end of vertical end cleats may be beveled approximately 1/4 inch at a 45 degree angle at the option of the procuring activity, 3.2.4.2 Grade A box cle
42、ats (3.2.4.1) apply to Gracies B and C box cleats except that in areas not grooved for a handle, solid, well inkergrown knots shall be permitted with diameters not exceeding half the width of the cleat, Grades B and C box end cleats.411 restrictions of 3.2.4.3 Grades A, B, Le., the outer edge of the
43、 projection is thicker than the inner edge. sliding the projection longitudinally into the recess from the end. The glue used in Linderman-jointed pieces shall be water-resistant and toxic treated. 3.8.2.1 Pieces so constructed, Linderman jointed pieces are assembled by 11 Provided by IHSNot for Res
44、aleNo reproduction or networking permitted without license from IHS-,-,-MIL-13-4 8 O 24 (MU) 3.8.2.2 A butt or tongue and groove Joint of narrow boards fastened with corrugated fasteners to make a single piece shall not be permitted on the ends of any style box. Fasteners shall be spaced not more th
45、an 8 inches apart. shall be driven from the outside of the box. Corrugated fasteners 3.9 Nailing 3.9.1 Size.-The size of nails for fastening sides, to ends and cleats as determined by the species of wood and shall be as follows unless otherwise apeclfied on the drawings: Group I.7d nails Group II an
46、d III WOOS. nails Qroup IV uooda6d nails The aize of nail8 for fastening bottoms to sides and ends ia determined by the apeclea of wood in the sides and ends and shall be a0 follows unless otherwie specified on the drawing: Qroup I.oood nails Qroup II and III noods5d nails Qroup IV woods . . .4d nai
47、l8 When a nail alee ia specified on the drawing for accuring boards or pieces in applications where clinching is not required, the apeclfied nail size shall apply for Qroup I woods and a corres- ponding reduced nail size shall apply for other group woods. When nailing 1/2 inch thick sides, 6d nails
48、shall be used. Unless otherwise specified, the size of nails shall be alx When a nail size is specified for eecuring penny for fastening end cleats to end and two penny for fastening top cleats to top. boards or pieces in applications where clinching Is required, nail size may be reduced provided th
49、at all requirements relative to clinching, overdriving and minimum thickness of lumber are maintained. 3.9.2 Spacing.-The average spacing of nails holding the aides, top or bottom to the ends and cleats or battens shall be not greater than the value shown in Table II and shall be located as shown In figure 1 and 80 end and end cleats ahall be In accordance with figure 8 for class 5 boxes. spacing because of th
