AIR FORCE MIL-S-21041 C-1975 SLOTTED METAL FRAMING ANGLES AND PANELS《开槽金属构架的角度和面板》.pdf

1、MIL-S-2104lC 6 January 1975 Superseding 13 April 1962 MILS - 2l04lB MILITARY SPECIFICATION SLOTTED METAL FFA“G, ANGLES AND PANELS This specification is approved for use by ail Departments and Agencies of the Department of Defense, 1. SCOPE 1.1 Scope. This specification covers slotted metal angle, me

2、tal shelving panels, nuts and bolts for assembly. 9d.2 Classification. by the following units and types as specified (see 6.2). Material covered by this specification is designated Unit A - Slotted Metal Angle, (dimensions in inches). Type 1 - Steel, No. 14 gage, Minimum dimensions of lU MIL-B-26195

3、 MIL -N -45913 STANDARDS. Federal. FED-STD-595 Military. MIL-STD-O MIL-STD-129 Aluminum Alloy 5052, Plate and Sheet Steel, Sheet and Strip, Low Carbon Steel, Sheets, Carbon, Zinc-Coated Zinc Coating, Electrodeposit, Requirement For Boxes, Wood, Cleated Boxes, Wood, Nailed Crates, Wood, Open and Cove

4、red Preservation, Method Of Chemical Films for Aluminum Alloys Box, Wood, Cleated, Skidded, Load-Beaxing Base Nuts, Self-Locking, Hexagon, Prevailing Torque Colors Sampling Procedures and Tables for Inspection by Aktributes Marking for Shipment and Storage (Activities outside the Federal Government

5、may obtain copies of Federal Specifications, Standards, and Handbooks as outlined under General Infor- nation in the Index of Federal Specifications and Standards and at the prices indicated in the Index. supplements as issued, is for sale on a subscription basis by the Superin- tendent of Documents

6、, U. S. Government Printkg Office, Washington 20402. ) (Single copies of this specification and other Federal Specifications required by activities outside the Federal Government for bidding purposes are available without charge from Business Service Centers at the General Services Administration Re

7、gional Offices in Boston, New York, Washington Atlanta, Chicago, Kansas City MO, Fort Worth, Denver, San Francisco, Los Angeles and Seattle WA,) (Federal Government activities may obtain copies of Federal Specifications, Standards and Handbooks and the Index of Federal Specifications and Standards f

8、rom established distribution points in their agencies .) (Copies of specifications, standards, drawings and publications required by suppliers in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) The Index, which

9、 includes cumulative monthly D. C. N, J . 2 h c #p .- CI Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-+2.2 cation to the extent specified herein. Unless otherwise indicated, the issue in effect on date of invitation for bids or request for proposa

10、l shall apply. Technical society and technical association specifications and standards are generally available for reference from libraries. They are also distributed among technical groups and using Federal agencies. AHERICAN SOCIETP FOR TESTING MATERIAC A-123 Other publications. The following doc

11、uments form a part of this specifi- Zinc (Hot-Galvanized) Coating on Products Fabricated from Rolled, Pressed, and Forged Steel Shapes, Plates, Bars and Strips. (Application for copies should be addressed to the American Sockety for Testing Materials, i916 Race Street, Philadelphia PA 19103.) NATION

12、AL MOTOR FREIGHT TRAFFIC ASSOCIATION, INC., AGENT National. Motor Freight Classification (Application for copies should be addressed to the American Trmckulg Associa- tions, nc., ATTN: UNIFORM CLASSIFICATION WMKCTTEE, AGEXT Uniform Freight Classification (Application for copies should be addressed t

13、o the Uniform Classification Committee, ATTN: Tariff Publishing Officer, Room U06, 222 South Riverside Plaza, Chicago IL 60606.) Tariff Order Section, 1616 P Street NW, Washington DC 20036). 3. REQUIREMENTS. 3.1 General. design, new construction, convenient to handle and suitable for the intended pu

14、rpose. All material and accessories shall be fabricated in accordance with first class comercial practices. Bending, flanging, perforating, forming and similar operations shall be performed in a manner to insure that there are no ruptures, cracks, unsightly wrinkles or other defects in the material,

15、 Unless otherwise specified, material will be fabricated to commercial tolerances. Material covered by this specification shall be of good *3.1.1 Standard Products. The slotted metal angles, the preformed meta shelving panels and nuts and bolts for assembly shall be the manufactureris comercial prod

16、uct except for any changes necessary to comply with specification requirements. and subassemblies thereof, shall be new and interchangeable. The nominal thicknesses of the angles and panels shall be the manufacturerts sandard thichess corresponding to the required gages so long as these thicknesses

17、apprhate the current industry standards relating gages and thickness. 3.2 Unit A. All like items furnished under any one contract, including parts - 3 c, Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-ZLOLILC 71 W 7777706 0237870 3 W MIL-S-2l0

18、4lC 3+3.2.1 conlorming to QQS-698 Half-hard Temper, 6ci,OOO psi minimum yield or QQ-S-775, Class d, Cold Rolled Half-hard No. 2 Temper, 60,000 psi minimum yield. Unit A, Types 1, 2, 3 and 4 shall be of formed slotted steel angle +3.2.2 5052H34 (QQ-A-250/8) with a minimum yield of 31,000 psi. 3.2.3 1

19、5 feet or special lengths when required for a specific design purpose as specified in 6.2.2. 3.2.4 3/i6 inch in a length of 10 feet. 3,2.5 The hole pattern for the lkl x 191 angle shall be of such design as to provide one line of holes and/or slots in each flange; the l?$f x the l x 311 angle shall

20、have one line of holes and slots in the narrow flange, and three lines of holes and slots in the wide flange. and shall be visibly indexed at 311 intervals. Unit A, Type 5, shall be formed slotted aluminum angle alloy No. Length, Unit A, all types shall be supplied in lengths of 10, 12, or Camber. C

21、amber, if any, of the slotted metal angle shall not exceed Hole Pattern. The hole pattern shall be of conhual repetition 3.3 Unit B. S3.3.1 Unit B, Types 1 and 2. QQ-S-698 (Minimum Skin-passed Temper) or QQ-S-775, Class d (Minimum Cold Rolled Soft No. 4 Temper) formed with channeled sides and open e

22、nds. holes shall be made in the underneath flange of the channel to receive the bolt specified in 3.4.1. *3,3.2 QQ-S-698 (Minimm Skin-passed Temper) or QQ-S-775, Class d (Mh-mum Cold Rolled Soft No. 4 Temper) formed with channeled sides and closed boxed ends. bolt holes shall be made in the undernea

23、th flange of the channel and along ecch corner portion of the outer edge of the channel for bolts specified in 3.4.1. 3.3.3 increments between 30 and 60 inches as specified in 6.2.2. 3.4 Accessories. +3.4.1 Nuts and bolts. Nuts and bolts shall be of hardened steel. The bolts shall be minimum 5/16 sh

24、ank diameter, 5/81! length for Unit A, Type 1, 2, 5 and 3/41 length for Type 3 and 4 and 9/16 hexagon head. unthreaded load bearing shoulder to prevent shearing action on the threads. The nuts shall be 9/16! across the hexagon flats and shall have a class 2 fit when engaged with the bolts. fastness.

25、 All nuts and bolts shall be linish treated in accordance with Para 3.5.1, Class 2. self-locking type, conforming to KCL-X-!6913 Type 1, Grade A, to prevent loosening after extended storage/handlkg and vibration during shipment of assembled slotted angle structures. 3.5 ssecification shall be free f

26、ron grosse, oil, scale, rust or other extraneous matter. All exposed edges shall be rounded, beveled, deburred, or fabricated in such a manner to prevent inti;rj to the Users hands. Panels shall be of steel sheet conforming to Slotted bolt Unit B, Types 3, 4, 5, 6 and 7 shall be of sheet steel confo

27、rming to Slotted Length. Unit B, al types shall be supplied in standard lengths of 611 Bolts shall have an One mating surface shall be knurled to improve When specified (see 6.2) the nuts supplied shall be of the Surface Finish. The surface finish of material furnished under this 4 Provided by IHSNo

28、t for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-21041C 71 7779706 0237871 5 3.5.1 nished under this specification. of finish desired (see 6.2.2 and 6.1). The following classes of finish shall be applicable to material fur- Procuring agencies shall specify the c

29、lass +Class 1. Primer or phosphatized base and baked-on synthetic enamel of high grade commercial quality. the discretion of the supplier provided t assures a strong bond with the base metal. specified (see 6.2.2), in accordance with FED-STD-595. The method of paint application shall be at Color sha

30、ll be DOD Gray, approximating chip 36321, unless otherwise %Class 2. Protective zinc coat per QQ-2-325, Type I, Class 3, electro- deposition, applied after perforating, or by Hot Dipping process, per ASTM Nuts and . bolts shall be coated after machining is completed. -Items manufactured from. QQS-77

31、5, Class d material fi not require further coating to comply with this paragraph. - A-123 applied b-ore or after perforating as specified (see 6.2). +Class 3. Same as Class 2 finish with the exception that a coating thick- ness of not less than 0.001“ is to be applied after perforating. finish shdl

32、conform to Type I, Class 1 of QQ-Z-325. be coated after machining per 88-2-325, Type I, Class 3. The surface The nuts and bolts shall Class 4. Surface treatment in accordance with MIL-C-.%l (for aluminum alloy=. 3.6 The contractor shaU furnish one copy of instructions with each unit package (see 6.2

33、.1) of material under this specifi- cation. The instructions Will cover assembly, illustrations, and technical data concerning specdied rating capacity using a safety factor of two for the horizontal and vertical length according to the application and dimensions. (Deflection occurring at manufactur

34、es1 rated loads will also be shown for the normal applications in the horizontal plane.) as required. 3.7 and appearance; free of defects, blemishes, burrs, ragged or sharp edges, or breaks in coating or plating which would detract from appearance or impair serviceability . 4. QUALITY ASSUFANCE PROV

35、ISIONS Handbook of Instructions. Additional copies may be ordered Workmanship. The finished material shall be first class in quality *4.1 Responsibility for inspection. Unless otherwise specified in the con- tract or purchase order, the supplier is responsible for the performance of all inspection r

36、equirements as specified herein. the supplier may utilize his own facilities or any commercial laboratory acceptable to the Government. any of the inspections set forth in the specification where such inspections are deemed necessary to assure that supplies and services conform to prescribed require

37、ments. *4.1.1 Component and Material Inspection. In accordance with 4.1 above, com- ponents and materials shall be inspected and tested in accordance with all the requirements of reference specifications, drawings, and standards unless otherwise excluded, mended, xodified, or qualified in this speci

38、fication or applicable purchase docment. Except as otherwise specified, The Government reserves the right to perform 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-s-210WC 4.2 Sampling for lot acceptance. %Y*. c“ *.- I* 4.2.1 at one time shall

39、 be considered a lot for purposes of inspection. Inspection lot. All similar material of one kind offered for delivery 4.2.2 from each lot offered to the Government in accordance with MIL-STD-105 at inspection level II. defective for major defects and 6.5 percent defective for minor defects. 4.3 wit

40、h 4.2.2 shall be examined to verify compliance with the specification. Examination shall be conducted as specified in Table I. Any units in the sample containing one or more defects shall be rejected and if the number of defective units in any sample exceeds the acceptance number for that sample, th

41、e lot represented by the sample shall be rejected. Table I. Sampling for examination. A random sample of units shall be selected The acceptable quality level shall be 2.5 percent Examination. Each sample of the sample units selected in accordance Classification of defects in accordance with MIL-STD-

42、105 Categories Defects Critical Major: 101 102 103 104 io5 i06 107 Minor : 201 202 None. Defects 2.5 AQL. Units not new, evidence of reclaimed, used or salvaged material, Camber in excess of 3/16! in a 10 foot length of the metal angle. Accessories not as specified or missing. Hole and slot pattern

43、not as specified. Dimensions not as specified. Gage not as specified. Surfaces or finish not as specified, void of coating, breaks, incomplete finishes, or plating coats below the required thickness. Defects 6.5 AQL Burrs, ragged edges, impassible or incomplete slots. Handbook of Instructions not as

44、 specified. . 4.4 Inspection of preparation for delivery. The preservation, packing, packaging and marking of the units shall be examined and tested to determine conformance with the requirements of section 5 of the specification, and as required by specifications referenced therein. Inspection lots

45、 and sampling shall be in accordance with MIL-STD-105 with inspection level S-4 with an AQL of 6.5 percent defective. 5. PFEPARATION FOR DELIVERY. 6 c . $; Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I m-s-uo4lc *5.1 5.1.1 Levels A and B. Cleanin

46、g, drying, preservation and packaging shall be in accordance with MIL-P-U6, Method III. *5.1.2 Level C (Commercial Packaging). packaged to afford adequate protection against physical damage during shipment from the supplier to the first receiving activity. quantity per package shall be the same as t

47、hat normally used by the supplier for retail distribution. *5,2 Packing. 5.2J Level A. Slotted angles, panels and accessories when required, segre- gated for form and size, as applicable, shall be packed in cleated plywood boxes, nailed wood boxes, skid cleated load bearing base wood boxes, or unshe

48、athed crates conforming to PPP-B-601 (overseas type), PPP-B-621 (Class 2), MIL-B-26195 and PPP-C-650 respectively. not exceed 1000 pounds. the weight limitations of the specification. closed and strapped in accordance with the appendix of the applicable specifi- cation. Packaging. Packaging shall be

49、 level A, B, or C as specified (see 6.2). Slotted angles and panels shall be The package and the Packing shall be level A, B, or C as specified (see 6.2). The gross weight of the boxes shall The gross weight of the crates shall be subject to The boxes and crates shall be 5.2.2 Level B. Slotted angles, panels and accessories when required, shall be packed as specified in 5.2.1 except that the cleated plywood box shall conform to PPP-B-601 (domestic type) and the n