1、INCH-POUNI) A-A-593 37 16 September 1998 SUPERSEDING 30 June 1989 MIL-I-43684B COMMERCIAL ITEM DESCRIPTION INTRENCHING TOOL, “Dy FOLDING, LIGHTWEIGHT The General Senices Administration has authorized the use of this commercial item description for ail federal agencies. 1. SCOPE 1.1 Scope. This comme
2、rcial item description (CID) covers a lightweight, foldable, hand insenching tool. 1.2 Intended use, This intrenching tool is intended for use as a shovel or pick to move dirt, sever roots and clear brush. -_ Beneficial comments (recommendations, additions, deletions) and any pertinent data which ma
3、y be of use in improving this document should be addressed to: U. S. Army Natick Research, Development, and Engineering Center, Natick, MA 01760-5014 by using the self-addressed Standardmtion Document Improvement Proposai (DD Form 1426) appearing at the end of this document or by letter. AMSC NIA FS
4、C 5120 Licensed by Information Handling ServicesA-A-5933 7 2. SALIENT CHARACTERISTICS 2.1 Design. The intrenching tool shall have a foldable curved blade and ID“ type handle. The tool shall be capable of being used as a shovel when fully extended and as a pick with the shovel blade positioned at a 9
5、0“ angle. The shovel blade and handle shall be capable of being locked. The edges of the shovel blade shall be beveled. The intrenching tool shall have one serrated cutting blade edge and one axe blade edge. The edges of the shovel blade shall be sounded to a 35“ f 3 angle. When folded, the intrench
6、ing tool envelope dimensions shall be 9-1/4“L x 6-1/16“W x 2-1/4“H (k 1/16 inch). The extended length of the inbenching tool shall be 23-1/4 + 1/16 inches. The intrenching tool shall interface with the intrenching tool carier conforming National Stock Nkber 8465-01-001-5474. MIL-C-438 18B; Carrier,
7、Intrenching Tool, Hand, Folding, Lightweight, Plastic, LC-1, 2.2 Interface requirements. The folded intrenching tool, when placed in the carrier, shall have a snug fit when examined as specified in 4.3.1. The intrenching tool carrier shall be capable of being closed and fastened with the intrenching
8、 tool placed in the canier when tested as specified in 4.3.1 2.3 Phvsical reauirements, 2.3.1 Thrust washer and nut bondinp. The thrust washer and nut subassembly shall be completely bonded and shall be tested as specified in 4.3.2.1. 2.3.2 Hardness. The shovel blade shall have a Roclwell “Cl hardne
9、ss within the range of 40-46. Examination of the hardened blade shall be as specified in 4.3.2.2. 2.3.3 FiniS. The intrenching tool shall have a chip and scratch-resistant finish. 2.3.3.1 Steel cornDonem . Prior to assembly, steel components shall be either phosphate coated or pretreated for paintin
10、g and shall be coated with enamel having a minimum thickness of 0.00 15 inch (see 6.5) . Examination of the enamel shall be as specified in 4.3.2.3. 2.3.3.2 Aluminum com ponents, Prior to assembly, the aluminum components shall be anodized ushg standard commercial practice (see 6.5). The anodized co
11、mponents shall be examined as specified in 4.3.2.3, 2.3.4 COITOS ion resistance, The intrenching tool shall be made from corrosion-resistant material. The intrenching tool shall be tested for corrosion resistance as specified in 4.3.3.1. 2 Licensed by Information Handling Services m 9038054 0005630
12、357 II A-A-5 93 3 7 2.3.5 as specified in 4.3.3.2. Weight. The weight of the intrenching tool shall not exceed 2.5 pounds when examined 2.3.6 Color. The color of the intrenching tool shall conform to color number 37038 of Federal Standard 595. 2.3.7 Lubrication. Ail threaded areas and working joints
13、 shall be treated with a light coating of Dow Chemical Molycoat number 557, or equivalent. 2.4 Markjnn, Each intrenching tool shd be permanently and legibly marked with the name of the manufacturer and the year of manufacture. The letters U.S. shall be permanently and legibly marked on the intrenchi
14、ng tool handle. 2.5 Workmanshlp. The surfaces of the intrenching tool shall be free of burrs, slivers, sharp corners, and rough or sharp edges (except for the cutting edges of the shovel blade). Feathered edges shall be removed from the shovel blade. Coatings shall be continuous with no missed cover
15、age, smooth, dry film and shaii be free of any embedded foreign matter. Rivets shall completely fill the rivet holes and rivet heads shall be full, neatly made, concentrical with the rivet hole and shall be in full contact with the riveted member. 2.6 Performance requirements. 2.6.1 Blade folding. T
16、he shovel blade shall be capable of being folded on its hinges to the pick and shove1 positions with a weight load of not less than 2 pounds and not more than 7 pounds when tested as specified in 4.3.3.3. 2.6.2 Strength. The intrenching tool shall not develop a permanent deflection of more than 5/16
17、 inch when tested as specified in 4.3.3.4 (Procedure A). Intrenching tool components shall not hcture or break and the intrenching tool shaii not be rendered inoperable when strength tested in accordance with 4.3.3.4 (Procedure B). . 2.7 _Metric products, Products manufactured to metric dimensions w
18、ill be considered on an equal basis with those manufactured using inch-pound units, provided they fail within the tolerances specified using conversion tables contained in the latest revision of ASTM E 380, and all other requirements of this commercial item description are met. If a product is manuf
19、actured to metric dimensions and those dimensions exceed the tolerances specified in the inch-pound Units, a request should be made to the contracting officer to determine if the product is acceptable. The contracting officer has the option of accepting or rejecting the product. 3 Licensed by Inform
20、ation Handling ServicesA-A-59337 3. REGULATORY REQL7REMENTS 3.1 Contractor-recovered material The offeror/contractor is encouraged to use recovered materiais to the maximum extent practicable, in accordance with para-mph 23.403 of the Federal Acquisition Regulation (FAR). 4. QUALITY ASSURANCE PROVIS
21、IONS 4.1 Product conformance. The products provided shall meet the salient characteristics of this commercial item description, shall conform to the producers own drawings, specifications, standarcis, and quality assutance practices, and be the same product offered for sale in the commercial market
22、or the same product that has successfully been delivered to the Government on a previous contrct or purchase order. The Government reserves the right to require proof of such compliance prior to first delivery and thereafter as may be otheniise provided for under the provisions of the contract. 4.2
23、Market acceptabilit, 3fA)= The following market acceptability criteria is necessary to document the quality of the product to be provided under this CID: The company producing the item must have been producing a product meeting the requirements of this CID for at least 2 years. 4.3 Tests 4.3.1 Intre
24、nchine tooi/carrier interface. The innenching tool and carrier shall be examined and tested for interface by plachg a folded intrenching tool inside the canier. The carrier shal then be folded and fastened. Inability to close and fasten the carrier shall constitute an interface failure. Evidence of
25、a loose fit between the tool and carrier or evidence of a bulge in any section ofthe carrier slcnstitut: an intedace failure. 4.3.2 Compo nent tesQ 4.3.2.1 hs t washer and nut bond test. Thrust washer and nut subzssemblies shall be tested by affking the nut in a vise or fixture and applying 500 poun
26、ds of force qainst the inner face of the washer. Any delamination or separation of the washer from the nut shall constitute a test failure. 4 Licensed by Information Handling Services m 9038054 0005b32 32T 5 A-A-5 93 3 7 4.3.2.2 Hardness, Tne intrenching tool blade shall be tested for hardness in ac
27、cordance with ASTM El 8. Three readings will be taken on the blade within a 3-inch triangle. Any value not within the hardness range specified in 2.3.2 shall constitute a tes failure. 4.3.2.3 Finish. Conduct a visuai examination and veri that ail steel components have been completely coated. Using s
28、tandard commercial practice, veri that enameled components have a minimum coating thickness of 0.00 15 inch. Visually veri that aluminum components have been completely anodized. 4.3.3 End item tests. 4.3.3.1 Corrosio n-resistance test. The intrenching tool shall be tested for corrosion resistance a
29、s specified in ASTM Bi i 7. The time of exposure shall be 96 hours. Evidence of corrosion on any component of the intrenching tool shall constitute a test failure. 4.3.3.2 Veri the weight of the intrenching tool by weighing on a calibrated scale. Failure to meet the requirements of 2.3.5 shall const
30、itute a test fdure. 4.3.3.3 Blade folding test. With the blade locking mechanism disengaged and the handie of the intrenching tool held nnly, a load shall be applied perpendicular to the blade 1/2 inch from the tip of the blade. Failue of the blade to fold within the weight mige specified in 2.6.1 s
31、hall constitute a test failm. 4.3.3.4 strength tes;. The intrenching tool shall be strength tesrd as shown on Figure 1. Failure to meet the requirements specified in 2.6.2 after completion of test Procedure A shall constitute failure of he test. At the compIetion of test Procedure B, the intrenching
32、 tool shall be inspected for evidence of component fracture and loss of functionality. Failure to meet the requirements of 2.6.3 shall constitute a test failure. 5. PACKAGING 5.1 Packaying, Preservation, packing and marking requirements shall be as specified in the contract or purchase order (see 6.
33、1). 5 Licensed by Information Handling ServicesA-A-5933 7 6. NOTES 6.1 Ordering Irzta. Acquisition documents must speciQ the following: a. Titi?. number and date of this document. b. Packging requirements (see 5.1). 6.2 Sources f?r non-eovement association documents: AMERICAN SOCIETY FOR TESTMG AND
34、MATERIALS (ASTM) B117 - Starkd Practice for Operating Salt Spray (FOG) apparat El 8 - Stank-d Test Methods for RocAwell Hardness and Rockwell Superficial Hardness of MeWc Materials E 380 - Use 3f the International System of Units (SI) (The Modernized Metric System) (Application 5 copies of ASTM stan
35、dards should be addressed to the American Society for Testing and hlzerials, 100 Barr Harbor Drive, West Conshohoken, PA 19428-2959) 6.3 Source of C-J- A manufacturer whose product is known to meet the requirements of this document is ked below; however, competition is not limited to this company. A
36、mes Company ?. O. Box 1774 ?arkenburg, WV 26 1 O 1 6.4 National C:ock Number NSN) . The following NSN is assigned to the intrenching tool: Intrenching Tool, Hand, Folding, Lightweight - 5 120-00-878-5932 6.4.1 Iptrenckix tool fabtioL The intrenching tool has been fabricated as specified using the fo
37、llowing 5litary documents: Specification - MIL-I-43684B; Intrenching Tool, Hand, Folding, Lightweight 6 Licensed by Information Handling ServicesA-A-593 37 Drawings - Drawing No. 2-2-284; Intrenching Tool, Hand, Folding, Lightweight, Complete Assembly Drawing No. 2-2-285; intrenching Tool, Hand, Fol
38、ding, Lightweight - Details A Drawing No. 2-2-286; Intrenching Tool, Hand, Folding, Lightweight - Details B Drawing No. 2-2-288; intrenching Tool, Hand, Folding, Lightweight - Strength and Function Test 6.5 bishes. Prior to assembly, steel components can be phosphatecoated in accordance with Specifi
39、cation DoD-P-16232, “Phosphate Coatings, Heavy Manganese or Zinc Base (For Ferrous Metais)“, followed by a treatment with corrosion-resistant oil. Enamel coating can be accomplished by pretreating the steel components prior to assembly in accordance with TT-C-490“ Cleaning Methods for Ferrous Surfac
40、es and Pretreatments for Organic Coatings“, followed by coating with enamel conforming to 1T-E-529, “Enamel Allcyd, Semigloss, Low VOC Content“. Prior to assembly, aluminum components can be anodized in accordance with Specification MIL-A-8625, Type II, Class 2, “Anodize Coatings for Aluminum and Al
41、uminum Alloys“. MILIT.4RY INTERESTS: Custodians: Naiy - SH Air Force - 99 Army - GL Review A Army-MD Air Force - 84,85 Navy -AS, CG DSC - CC Civil Agency Coordinating Activity: I_ GSA-FSS Preparing Activity: Army - GL Project No. 5120-0100 7 Licensed by Information Handling Services1 5 AhlD i50 LE L
42、OAp AFFLIED AT THIS FOINT 3CiU-CS LOAD AFFLIED AT TK:S POI 1 /2 TIGHTEN NUT TO 27 INCH/POUNDS TS2OUE -SUPPORT STEEL B- SUPPORT STOP STECL R 5 29/32 SUPPORT STOP RELIEVE STOP ?E NECESSARY OR CLEARANCE jF SERRATIONS BLADE EST A. 1. 2. 3, 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. B. i. 2. 3. SECTION A-A RELIEV
43、E SUPPORT- i WHERE NECESSARY FOR CLEARANCE OF SERRATIONS RELIEVE SUPPORT FOR CLEARANCE OF 3 RIVETS WHEN NECESSARY PROCEDURE: EXTEND TGOL TO TEST PDSITIOK. TIGHTEN HGNDLE NUT TO REQUIRED ORQUE. SET TOOL IN JIG. APPLY 5 POUND LOAD. READ AND RECORD SETTING. REMOVE 5 POUND LOAD AND APPLY 150 POUND LOAD,
44、 REMOVE 150 POUND LOAD. REMOVE TOOL FROM JIG AND LOOSEN NUT. MOVE BLADE OUT OF AND THEN 3ACK INTO TEST POSITION. RETORQUE NUT AND SET TOOL BACK IN JIG. APPLY 5 POUND LOAD. READ AND RECORD SETTING. DIFFERENCE BETWEEN FIRST AND SECOND READING IS PERMANENT DEFLECTION. SECTION B-B APPLY 300 POUND LOAD. REMOVE TOOL FROM JIG. INSPECT FOR FRACTURE OF ANY COMPONENT. END ITEM TESTS FIGURE 1 OR Licensed by Information Handling Services
