1、c DOD-P-63478 29 May 1981 MILITARY SPECIFICATION PIN, STRAIGHT, HEADLESS (DOWEL), GENERAL SPECIFICATION FOR, METRIC This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Sc0 e. This specification covers standard size and oversize metric hea
2、d- less dowe “ pins, commonly referred to as machine dowel pins. 1.2 Classification. The headless dowel pin shall be of the following classes as specified: Class 1 - Dowel standard size metric (DOD-P-63478/1) Class 2 - Dowel oversize metric (DOD-P-63478/2) 2. APPLICABLE DOCUMENTS 2.1 Issues of docum
3、ents. The followi.ng documents of the issue in effect on date of invitation for bids or request for proposal, form a part of this specifi- cation to the extent specified herein. SPECIFICATIONS FEDERAL QQ-P-416 - Plating, Cadmium (Electrodeposited) . PPP-H-1581 - Hardware (Fasteners and Related Items
4、), Packaging and Packing for Shipment and Storage of. MILITARY DOD-P-ZZ - Phosphate Coating, Heavy, Manganese or Zinc Base oD-P-63478/1 - Pin, Straight, Headless, (Dowel), Standard Size, Metric. DOD-P-63478/2 - Pin, Straight, Headless, (Dowel) , Oversize, ktric. MIL-C-13924 - Coating, Oxide, Black f
5、or Ferrous Metals. (For Ferrous Metal S) . Beneficial comments (recanmendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, US Amy Armament Research and Development Command, ATTN: DRDAR-TST-S, Dover, NJ 07801 by usin
6、g the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. *U.S.GOVERNMENTPRlNTlNG OFFICE 1981-703-023/3743 7 f- THIS DOCUMENT CONTAINS , PAGES, FSC 5315 Provided by IHSNot for ResaleNo reproduction or networking permitted wi
7、thout license from IHS-,-,-DOD-P-63478 STANDARDS FEDERAL FED-STD-66 - Steel: Chemical Composition and MILITARY MIL-STD-105 - Sampling Procedures and Tables (CoDies of specifications, standards, drawings, Hardenabil ity. for Inspection by Attributes. and publications required by contractors in connec
8、tion with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) 2.2 Other publications. The following document forms a part of this specifi- cation to the extent sDecified herein. Unless otherwise indicated, the issue in effect on d
9、ate of invitation for bids or request for proposal shall apply. AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI)/AHERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) AHSI/ASTM E18-79 Standard Test Methods for Rockwell Hardness and Rockwell Super- ficial Hardness of Metallic Materials. (Applications for cop
10、ies should be addressed to the American Society for Test- ing and Materials, 1916 Race Street, Philadelphia, PA. 19103). ANERICAN NATIONAL STANDARDS INSTITUTE (ANSI) ANSI B46.1-1978 - Surface Texture (Applications for copies should be addressed to the American National Standards (Technical society a
11、nd technical association specifications and standards are Institute, Inc., 1430 Broadway, New York, NY 10018). general ly available for reference from libraries. They are al so distributed among technical groups and using Federal agencies.) 3. REQUIREMENTS 3.1 Specification sheets. The individual it
12、em requirements shall be as speci- fied herein and in accordance with the applicable specification sheets. In the event of any conflict between requirements of this specification and specifica- tion sheet, the latter shall govern. 3.2 Materials. Recycled and reclaimed materials (see 3.1) shall be us
13、ed to the maximum extent practicable. 3.2.1 Carbon or alloy steel. Carbon or alloy steel dowel pins shall be in accordance with FED-STD-66, except that the maximum sulphur and phosphorous of the composition shall not exceed 0.05 and 0.04 percent respectively. 2 Provided by IHSNot for ResaleNo reprod
14、uction or networking permitted without license from IHS-,-,-DOD-P-6347B 53 m 7777706 0307327 5 m DOD-P-63478 3.3 Dimensions. Dimensions and to1 erances for al 1 types of dowel pins shall conform to the dimensional requirements of the applicable specification sheet and shall apply after protective fi
15、nishes. 3.4 Performance characteristics. The dowel pins shall meet the follow- ing performance requirements when subjected to the applicable test specified in 4.8. 3.4.1 Double shear strength. Dowel pins should be capable of withstanding the minimum double shear strengths specified in table I. TABLE
16、 I. Double shear strength. 1.5 2 2.5 3 4 5 6 8 10 12 14 16 20 25 Nominal pin dia. (mm) kN (kilonewtons) min b 3 6 9 13 22 35 51 90 141 203 276 360 563 880 3.5 Finish. The protective finish of the dowel pins when specified in the appm specification sheet shall be as follows (see 4.8.3). 3.5.1 Carbon
17、and alloy steel dowel pins. When phosphate coating or cad- mium plating is specified for carbon or alloy steel dowel pins (see 3.1), they shall conform to 3.5.1.1 or 3.5.1.2 as applicable. When uncoated dowel pins are specified in the contract or order, black-oxide coated dowel pins per MIL-C-13924,
18、 class 1 may be furnished at the option of the contractor. 3.5.1.1 Phosphate coating. Carbon and alloy steel dowel pins shall be phosphate coated in accordance with DOD-P-16232, type Z, class 2. Phosphate coating shall be 5 to 15 Fm (micrometers) thick. Provided by IHSNot for ResaleNo reproduction o
19、r networking permitted without license from IHS-,-,-DOD-P-63478 3.5.1.2 Cadmium plate. Carbon and alloy steel dowel pins shall be cadmium plated in accordance with QQ-P-416, type II, class 2. Plating thickness shall be 76 Pm (micrometers) . 3.6 Hardness. 3.6.1 Carbon or alloy steel dowel pins. Carbo
20、n or alloy steel dowel pins shall have a core hardness of 4OHRC to 58HRC or equivalent, and a case hardness of 58HRC to 63HRC or equivalent. However, the core hardness of the dowel pin shall not in any instance exceed the case hardness. Minimum penetration for the case hardness shall be 0.4 mm minim
21、um thru 10 mm diameter and 0.75 mm minimum over 10 mm diameter. These requirements shall be met when tested in accordance with 4.8.4. 3.7 Straightness. Dowel pins shall be straight over the effective length within an accumulative total of 0.013 per 25 mm of length for nominal lengths, up to and incl
22、uding 100, and within 0.05 mm total for all nominal lengths over 100 mm (see 4.8.5). 3.8 Surface roughness. Prior to coating, the surface roughness of the cylin- drical surface (diameter) of the dowel pins shall not exceed 0.4 Pm and all other surfaces shall not-exceed 3.2 pm when defined. in accord
23、ancewith ANSI 646.1. 3.9 Workmanship. The workmanship shall be uniform in quality and free of ir- regularities or detrimental defects. The surfaces shall not contain any foreign matter. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract, the
24、 contractor is responsible for the performance of all inspection requiremets as specified herein. Except as otherwise specified in the con,tract, the con- tractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved
25、by the Govern- ment. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. 4.2 Classification of inspections. The inspection requirements speci
26、fied herein are classified as follows: a. Material inspection (see 4.4). b. Quality conformance inspection (see 4.5) . 4.3 Inspection conditions. Unless otherwise specified, all inspections shall be performed in accordance with the test conditions specified in 4.8.1, 4.8.2, 4.8.3, 4.8.5 and 4.8.6. I
27、-“ . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DOD-P-63LI78 53 m 7777706 OL0733L 3 m DOD-P-63478 4.4 Materials inspection. Materials inspection shall consist of certification supported by verifying data that the materials used in fabricating th
28、e dowel pins are in accordance with the applicable paragraph listed in 3.2.1. 4.5 Quality conformance inspection. Quality conformance inspection shall be as specified in table II. Each dowel pin which does not pass any of the tests specified in paragraph 4.8 shall be defective. 4.6 Quality conforman
29、ce inspection sampl ins. 4.6.1 Inspection lot. An inspection lot shall consist of all dowel pins covered by a single specification sheet produced under essentially the same conditions, and offered for inspection at any one time. TABLE II. Quality performance inspection. . Inspection Test method * Re
30、quirement paragraph paragraph Dimensions 4.8.4 3.6.1 Hardness 4.8.3 3.5.1.1, 3.5.1.2 Finish 4.8.2 3.4.1 Double shear strength 4.8,l 3.3 4.6.2 Sampling for visual and dimensions examination. A random sample of dowel pins shall be taken from each lot in accordance with MIL-STD-105 in- spection level I
31、. The acceptable quality level (AQL) shall be indicated in table 111. The AQL shall apply to each individual defect, not to a group of defects. 4.6.3 Sampling for shear test. Sampling for shear test of dowel pins shall be in accordance with level S-1 of MIL-STD-105. The AQL shall be 1.5 percent defe
32、ctive. 4.6.4 Sampling for finish test. Sampling for protective finish test of dowel pins shall be in accordance with the applicable specifications refer- enced in 3.5.1.1 and 3.5.1.2. 4.6.5 Sampling for hardness test. Sampling for hardness test of dowel pins shall be in accordance with level S-1 of
33、MIL-STD-105. The AQL shall be 1.5 percent defective. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DOD-P-b3LI7B 53 m 7777706 0307332 5 m DOD-P-63478 TABLE III. Classification of defects. . Category AQL = 1.0 percent defects Major None defined Criti
34、cal Inspection method Defect 101 Vi sua1 Workmanship 202 Visual Protective finish 201 SIE h/ Straightness 102 SIE lJ Diameter Mi nor AQL = 2.5 percent defects I/ Standard inspection equipment. 4.7 Packaging inspection. The sampling and inspection of the preservation, packaging, packing and container
35、 marking shall be in accordance with the require- ment of PPP-H-1581. 4.8 Methods of inspection. 4.8.1 Visual and dimensional examination. Each dowel pin taken as specified in 4.6.2 shall be examined to verify conformance with this specification. Exami- nation shall be conducted in accordance with t
36、able III. 4.8.2 Double shear strength test. Each dowel pin taken as specified in 4.6.3 shall be tested for double shear strength in accordance with 4.8.2.2. 4.8.2.1 Shear test fixture. The shear test shall be made by means of a suit- able fixture which meets the following requirements. The dowel pin
37、 shall be placed in a hole that passes through a shear block and a plunger within the block. The maximum clearance between the shearing planes of the block and the plunger shall be 0.127 mm. The block and plunger shall be so constructed that the shear planes are normal to the longitudinal axis of th
38、e dowel pin being tested. The block and plunger shall be made of hardened steel or shall have steel inserts with a minimum shearing-surface hardness of 65HRC. The clearance or interfer- ence between the dowel pin and pinho1 e of the block and plunger shall be within the fol lowing limits. I Nomimkyi
39、n dia. Max clearance I Max interference (m) I I 1.5 to 5 6 to 10 12 to 16 I _“ .O125 I .O075 I .O050 .O100 . 0075 . O0 75 I 20 to 25 I . O1 50 I .o100 I 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- -. - - DOD-P-63478 53 m 7977706 0207333 7 W DO
40、D-P-63478 The dowel pin to be tested shall be assembled to the block and plunger with the two ends of the dowel pin at least one dowel pin diameter away from the shear planes. A load equal to the minimum double shear value specified in . table I for the dowel pin size being tested, shall be applied
41、to the plunger. If fracture occurs in the dowel pin under the applied shear load, dowel pin shall be considered defective. Dowel pins too short to be tested in double shear shall be tested by applying the test to two dowel pins simultan- eously in single shear. 4.8.2.2 Double shear test method. The
42、dowel pins shall be tested by the double shear method and shall have the minimum double shear strength as shown in table I. 4.8.3 Finish test. The carbon or alloy steel dowel pins shall conform to 4.8.4 Hardness test. The test procedure shall be in accordance with ASTM E18, except that the core hard
43、ness of each specimen shall be measured on a transverse section of a point one-eighth of the nominal diameter from the axis of the dowel pin. The case hardness shall be determined with a Rockwell Superficlal hardness tester in accordance with ASTM E18 using a 15 kilogram load. determined by using on
44、e of the following test methods. the finish test of QQ-P-416 or DOD-P-16232. 4.8.5 Straightness test. The straightness of the dowel pins shall be 4.8.5.1 Ring gage method. The straightness over the length of the dowel pins shall be such that the dowel pins will pass freely through a ring gage of len
45、gth as tabulated below for the respective dowel pin lengths. The maximum inside diameter of the gage shall be greater than the maximum diameter specified for the pins on the applicable specification sheet by the amount of the straightness tolerance. Dowel pin Gage length 1 ength mm mm max min to and
46、 incl 25 74 . 85 75.15 over 50 49.85 50.15 over 25 to 50 24.85 25.15 4.8.5.2 Indicator gage method. The dowel pin shall be supported at each end in V- Blocks, rotated beneath a dial indicator, measuring FIM (Full Indicator . Movement). The maximum FIM allowable will be twice the straightness toleran
47、ce as specified in 3.7. 4.8.6 Surface roughness test method. Surface roughness shall be checked by using surface texture equipment capable of measuring the requirement specified in 3.8. 7 , /“ r Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DOD-P-6
48、3478 53 W 7977706 0307334 7 W. DOD-P-63478 5. PACKAGING 5.1 Packaging requirements. The requirements for packaging, packing and con- tainer marking shall be in accordance with PPP-H-1581 (see 6.2). 6. NOTES 6.1 Intended use. Dowel pins covered by this specification are intended for use in machine ap
49、plications, employing light drives for torque transmission, positioning parts with respect to one another, and for fastening together two or more parts of an assembly. 6.2 Ordering data. Procurement documents should specify the following: a. Title number and date of this specification and applicable specifi- b. Appl icable mil i tary specification sheet part number( S). C. Applicable levels of packaging protection (see 5.1). cation
