1、MIL-R-4b837B 57 99777Ob 0438673 b I INCH-POUND I 16 July 1998 SUPE2SEDI NG MIL-R-46837A 5 Noveinber 1986 MILITARY SPECIFICATION RACEWAYS, STEEL, RIGID This specification is approved for use by the U.S. Army Missile Command, Department of the Army, and is available for use by all Departments and Agen
2、cies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the requirements for rigid steel raceway conduits which consist of a base and cover so formed as to distinguish raceways from metallic tubular conduits. 1.2 Types and sizes, The raceways shall be of the following types
3、and sizes, as specified (see 6.2): Type I - Base snaps on cover as one unit - size no. 2, 5, 7, and 10 (see table I and figure 1). Type II - Cover snaps over base as separate units - size no. 15 (see table II and figure 2). Type III - Cover snaps over outside of base as separate units - size no. 19c
4、 and 19b (see table III and figure 3). Type IV - Cover snaps inside of base as separate units - size no. 21c, 210, 30c, and 30b (see table IV and figure 4). 1.2.1 Color. The colors shall be identified in accordance with the following: O - Black 1 - Brown 3 - White 4 - Red Beneficial comments (recomm
5、endations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, U.S. Army Missile Cornrnand, ATTN: AMSMI-RD-SE-TD-ST, Redstone Arsenal, AL 35898-5270, by using the self-addressed Standardization Document Improvement Proposal (
6、UD Form 1426) appearing at the end of this document or bv letter. AMSC N/A FSC 5975 DISTRIBUTION STATEMENT - A. Approved for public release; distribution is unliniited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-qb37B 57 777790b OLt3b72 Tr
7、 MI L - R - 4683 7 B ( MI ) 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents
8、are thos? listed in the issue of the Department of Defense Index of Specifi,cations and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2). SPECIFICATIONS FEDERAL PP P - B - 58 5 PPP-B-601 PPP-B-621 PPP-B-536 Boxes, Wood, Wirebound BOXS, Wood, Cleated Plywood Boxes, Wood,
9、 Nai led and Lock-coriier Boxes, Stlipping, Fiberboard Strapping, Steel and Seals Preservation, Methods of QQ-S-781 i41 L I TAKY MIL-P-116 STAN DARDS MI L I TARY MIL-STD-129 Marking for Shipment and Storage MI L-STD- 130 Identification Marking of U.S. Military Property FI I L - STD - 11 90 Minimum G
10、uidelines for Level C Preservation, Packing and Marking (Unless otherwise indicated, copies of federal and rnilitary specifications, standards, and handbooks are available from the Standardization Documents Order Desk, Bldg 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094. 2 Provided by IHSNot fo
11、r ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-4b837B 53 W 7777906 0438673 T W 2.2 Non-Government publications. The following document(s) form a part of this document to the extent specified herein. the issues of the documents which are DOU adopted are those liste
12、d iii tne issue of the DODISS cited in the solicitation. of documents not listed in the DODISS are the issues of the documents cited in the solicitation (see 6.2). Unless otherwise specified, Uness.otherwise specified, the issues UNDERWRITER LABORATCIRIES, INC. STHNDAZD: Subject no. 5 for (Applicati
13、on for copies Inc., Walt Whitinan Road, Melv Surface Metal - Raceways and Fittings. should be addrsssed to Underwriter Laboratories, 112, Long Island, New York 11749). (Non-Government standar s and other publications are normally available from the organizations that prepare or distribute the docume
14、nts, documents also may be available in or through libraries or other informational services.) These 2.3 Order of precedence. In the event of a conflict between the text of this document and the references cited herein (except for related associated detail specifications, specification sheets, or MS
15、 standards), the text of this document takes precedence. Nothing in this document however , supersedes applicable laws and regulations unless a specific exemption has been obtained. 0 3. REQUIREMENTS 3.1 Raceways. Raceways covered by this specification shall conform to the requirements of Underwrite
16、r Laboratories, Inc. standard subject no. 5 for surface raceways and fittings. 3.2 Construction. Raceways shall be constructed of mild steel and shall consist of two metal pieces so forqed and constructed as to provide a complete and secure enclosure which will afford adequate protection against mec
17、hanical injury or rodent destruction of wire conductors, 3.3 Dimensions. Overall dimensions for each type raceway shall be as specified in tables I, II, III, and IV, and figures 1, 2, 3, and 4. Radii and dimensions for controlling the general shape shall be controlled by the manufacturers practice.
18、3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-LIb37B 57 = 7777706 043b74 I . 17/32 21/32 15/16 3.4 Tolerances. Height and width tolerance shall be inch on references “X“ and IiYii dimensions of tables I, II, I materials thickness tolerances
19、 shall be plus 0.010 and minus length shall be plus or minus 1/4 inch. 0.04 0.04 0.04 3.5 Marking. Each length of raceway shall be identif trade mark of the manufacturer, this specification, type and TABLE I. Tvpe Size Dimensions Lgth-Ft Wire Size Race Capacity N0.15 1-9/16 11/32 0.04C 10 10 14 4 8
20、12 4 6 10 4 8 4 X Y Z Cover Base AWG Type R Type T or RH or Rl lus or minus 1/16 I, and IV. The 0.005 inch, and the accordance with MIL-STD-130. I YI - ed by the name or size, and in Figure 1 I 1 F No.10 Din X 1/2 3/4 3/4 1-5/1 Lgth Cove 5 10 10 10 t Base 5 10 10 10 14 12 * 14 12 10 14 12 10 8 14 12
21、 10 8 6 Note: Wires are pulled through the raceways TABLE II. Type II - m Type R or RH 3 2 4 3 2 5 4 3 2 10 10 6 5 4 ,aci ty Type or R 3 3 6 6 4 8 8 6 3 10 10 8 8 5 Figure 2 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-46837B 57 m 7797706
22、Oq38b75 3 m Z 0.025 0.025 t Figure 3 Lgth-Ft Wire Size Race Capacity or RH or R1 Cover Base AW G Type R Type T 5 - 10 14 3 3 12 3 3 t Size No. 19 Cover No. 19E ( Basel Dimens ion TABLE III. Type III - Note: Screw Knockouts are provided in base TABLE IV. Type IV - NO.21C 1-1/4 Cover ( Base) Cover No.
23、21B 1-1/4 NO.3OC 2-3/4 NO.306 2-3/4 I t Base 10 - lo Wire Size AW G 14 12 12 14 12 10 Tc Type R or RH 10 4 10 10 10 10 laci ty Type - or RI 10 6 13 10 10 10 Figure 4 Note: Screw Knockouts are provided in base 3.6 Cleaning. The cleaning process shall leave the raceways in a condition such that the pr
24、otective coating will adhere firmly to all surfaces. 3.7 Finish. Raceways shall be finished with baked enamel on all surfaces The composition and application of enamel to provide protection from corrosion. shall be in accordance with commercial practice. 3.7.1 Enamel coating. The enamel coating shal
25、l evenly cover the surface to which it is applied. requirements specified herein (see 4.2.2.2). The enamel coating shall withstand the test 3.7.2 Enamel color. Color of the baked enamel shall be as specified by the ordering data (see 6.2). 5 Provided by IHSNot for ResaleNo reproduction or networking
26、 permitted without license from IHS-,-,-MIL-R-Yb837B 57 m 797770b OY3b7b 5 m - 3.8 Workmanship. Raceways surfaces shall be free of foreign matter, e contain no sharp edges or burrs, and shall be smooth with uniform color. There shall be no cracks or splits in the material, however, slight enamel cra
27、zing or scoring on the raceway may be acceptable. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the Performance of all inspection requirements (examinations and tests) as specified he
28、rein. Except as otherwise specified in the contract or purchase order, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the in
29、spections set forth in this specification where such inspections are deemed necessary to supplies and services conform to prescribed requirements. assure ion system 4.1.1 Responsibility for compliance. All items shall ineet al requirements of sections 3 and 5. The inspection set forth in this specif
30、ication shall become a part of the contractors overall inspec or quality program. specification shall not relieve the contractor of the responsibility of ensuring that all products or supplies submitted to the Government for acceptance comply with all requirements of the contract. Sampling inspectio
31、n, as part of manufacturing operations, is an acceptable practice to ascertain conformance to requirements, however, this does not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to accept defective material. The absence of any inspecti
32、on requirements in the O 4.2 Inspection. 4.2.1 Inspection lot. A lot, for inspection purposes, shall consist of raceways that are of the same material, type, finish, size and manufactured under essentially the same conditions. 4.2.2 Quality conformance inspection. Unless otherwise specified (see 6.2
33、1, quality conformance inspection shall be conducted in accordance with Table V. Quality conformance inspection shall be applied to each lot of completed items being offered for fulfillment of the contract. Quality conforinance inspections shall consist of the following: a. Examination (4.2.2.1) b.
34、Tests (4.2.2.2) c. Packaging inspection (4.2.2.3) 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- NIL-R-96837B 57 m 7777906 0438677 7 m 4.2.2.1 Examination. The raceways shall be examined for design, construction, materials, components, dimensions
35、, marking, and workmanship to determine compliance with the requirements of this specification. from those requirements shall be cause for rejection. e Any deviation 4.2.2.2 Tests. An enamel finished sample from each lot snall be tested with a 3/4 inch diameter ball at a 5 inch-pound impact over a h
36、ollow anvil. After the impact, the enamel coating shall remain unbroken, even if the surface of the metal is dented by the impact force. 4.2.2.3 Packaging inspection. Preservation, packaging, packing, and marking for shipment and storage shall be inspected to determine compliance with the requiremen
37、ts of section 5. TABLE V. Sampling plan. Lot Size Sample Size 2 to 3 4 to 25 26 to 50 51 to 90 91 to 150 151 to 280 281 to 500 501 to 1200 1201 to 3200 3201 to 19,000 10,001 and over 100% 3 5 6 7 10 11 15 18 22 29 In all cases: Acceptance number is ZERO Rejection number is ONE 5. PACKAGING 5.1 Prese
38、rvation. Preservation, packaging, packing, unitization, and marking shall be level A, By or Commercial (see 6.2). 5.1.1 Level A or B. Raceways shall be packaged in accordance with MIL-P-116, Method III, utilizing containers conforming to PPP-B-636, class weather resistant or PPP-B-636, variety 2. Ra
39、ceways shall be packaged in 5 or 10 increments, a inaximum of 100 feet to the container. 5.1.2 Commercial. Preservation and packaging shall be in accordance with the requirements of MIL-STD-1190. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I -
40、MIL-R-46837B 57 m 7979906 04386789 m c 5.2 Packing. 5.2.1 Level A. Packaged raceways conforming to PPP-B-601, overseas type; shal n conta , style Closure and stiapping shall be PPP-B-585, class 3, style 2 or 3. be packed PP-B-621. cl ass ners 4 or in accordance with applicable container specificatio
41、n, except strapping shal 1 conform to QQ-S-781 type I or IV, finish A. 5.2.2 Level B. Packaged raceways shall be packed in fiberboard, containers conforming to PPP-B-636 class weather resistant, style optional, closures shall be in accordance with the appendix thereto. 5.2.3 Commercial. Packaged rac
42、eways shall be packed in accordance with the requirements of MIL-STD-1190. 5.3 Marking. 5.3.1 Level A or B. Marking shall be in accordance with MIL-STD-129. Additional markings shall include the following: a. Specification number, type b. Quantity contained (as def c. Name of manufacturer. d. Contra
43、ct or purchase order and size. ned in contract). number. 5.3.2 Commercial. Marking shall be in accordance with MIL-STD-1190. Additional markings shall include the following: 6. Th a. Specification number, type b. Quantity contained (as def c. Name of manufacturer. d. Contract or purchase order NOTES
44、 and size. ned in contract). number. . s section contains information of a general or explanatory nature that may be helpful, but is not mandatory.) 6.1 Intended use. Conduit raceways procured under this specification are intended to. contain and protect electrical wires, cables or harness on floor,
45、 walls, and ceiling surfaces from mechanical or rodent damages. 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-R-gh837B 59 9999906 O438679 O 6.2 Acquisition requirements. Acquisition documents must specify the f o 1 1 ow i ng : a. Title, numbe
46、r, arid date of the specification. b. Issue of UODISS to be cited in the solicitation, and if required, the specific issue of individual documents referenced (see 2.1 and 2.2). c. Type and size of raceways (see 1.2). d. Numper of feet in carton (see 5.1.2). e. Length if different tnan specified in 5
47、.1.1. f. Color required (see 1.2.1 and 3.7.2). g. If Government is to perform tests (see 4.1). h, Variance in testing (see 4.2.2). 6.3 Part or Identifying Number (PIN). The PIN sitould consist of the letter M, the basic nuinber of this specification, and dash numbers denoting type and size number. i
48、 46837 I Color (see 1.2.1) Size number (see 1.2) Type (see 1.2) 1 Basi c speci fi cati on number units I Prefix indicating inch-pound 6.4 Subject term (key word) listing, Conduits Enamel Snaps, cover 6.5 Changes from previous issue. Marginal notations are not usea in this revision to identify changes with respect to the previous issue due to the extensiveness of tne changes. Custodian: Army - MI Preparing Activity: Army - Fi1 Review Hcti vit i es: OLA - GS Project No. 5975-AO02 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
