1、DOD-P-63477 53 W 979990b 0307279 5 W I9 L3 /? DOD-P-634 77 MI L ITARY SPEC I FI CATION PIN, SPRING, TUBULAR, (COILED AND SLOTTED), GENERAL SPECIFICATION FOR, METRIC This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specifica
2、tion covers tubular-shaped spring pins constructed to resist reduction in pin diameter by means of spring action. 1.2 Classification. Spring pins shall be of the following types and classes as specified on the applicable specification sheets. 1.2.1 Types. Spring pins shall be the following types: Ty
3、pe I - Slotted Type II - Coiled 1.2.2 Classes. Type II spring pins shall be of the following classes: Class 1 - Heavy duty Class 2 - Standard duty Class 3 - Light duty 2. APPLICABLE DOCUMENTS 2.1 Issues of documents. The following documents of the issue in effect on date of invitation for bids or re
4、quest for proposal, form a part of this specifi- cation to the extent specified herein. SPECIFICATIONS FEDERAL QQ-P-416 - Plating, Cadmium (Electrodeposited) . QQ-2-325 - Zinc Coating, Electrodeposited, Requirements for PPP-H-1581 - Hardware (Fasteners and Related Items), Packaging and Packing for S
5、hipment and Storage of Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, U.S. Army Armament Research and Development Command, ATTN: DRDAR-TST-S, Dover, NJ 07801 by using the self-addres
6、sed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. xi US. GOVERNMENT PRINTING OFFICE 1981-703-023/3741 y THIS DOCUMENT CONTAINS 4 PAGES. - - 7 FSC 5315 Provided by IHSNot for ResaleNo reproduction or networking permitted without licen
7、se from IHS-,-,-DOD-P-63Ll77 53 W 9999906 0309280 3 I DOD-P-63477 MILITARY DOD-P-16232 - Phosphate Coating, Heavy, Manganese or Zinc base MIL-C-13924 - Coating, Oxide, Black for Ferrous Metals. MIL-1-17214 - Indicator, Permeability; Low-MU (Go-No Go). (See supplement 1 for list of associated specifi
8、cation sheets.) (For Ferrous Metals) . STAN DARDS FEDERAL FED-STD-66 -. Steel : Chemical Composition and Hardenabil ity. MI L I TARY MIL-STD-105 MIL-STD-1312 - Fasteners, Test Methods. - Sampling Procedures and Tables for Inspection by Attributes. (Copies of specifications, standards, drawings and p
9、ub1 ications required by contractors in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) to the extent specified herein. Unless otherwise indicated the issue in effect on date of invitation for bids or request f
10、or proposal shall apply. 2.2 Other publications. The following document forms part of this specification AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI)/AMERICAN SOC1 ETY FOR TESTING AND MATERIALS (ASTM) ANSI/ASTM A380-78 - Standard Recommended Practice for Cleaning and Descaling (Applications for copi
11、es should be addressed to the American Society for Testing (Technical society and technical association specifications and standards are Stainless Steel Parts, Equipment and Systems. and Materials, 1916 Race Street, Philadelphia, PA general ly available for reference from libraries. technical groups
12、 and using Federal agencies.) 19103.) They are also distributed among I 3. REQUIREMENTS 3.1 Specification sheets. The individual item requirements shall be as specified herein and in accordance with the applicable specification sheets. any conflict between requirements of this specification and spec
13、ification sheet, the latter shall govern. In the event of 3.2 Materials. Recycled and reclaimed materials (see 3.1) shall be used to the maximum extent practicable. 3 3.2.1 Carbon steel . Carbon steel shall conform to any of the steel compositions Nos. 1070 thru 1095, as specified in FED-STD-66. Pro
14、vided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DOD-P-63477 53 = 9777706 0309283 3 DOD-P-63477 3.2.2 Corrosion-resistant steel (austenitic). Austenitic corrosion-resistant steel shall conform to the composition of steel number 302 as specified in FED-ST
15、D-66 . 3.2.3 Corrosion-resistant steel (martensitic). Martensitic corrosion-resistant steel shall conform to the composition of steel no. 420, as specified in FED-STD-66. 3.3 Dimensions. Dimensions and tolerances for all types of spring pins shall conform to the dimensional requirements of the appli
16、cable specification sheet and shall apply after protective finishes. 3.4 Performance characteristics. The spring pins shall meet the fol lowing performance requirements when subjected to the applicable test specified in 4.8. 3.4.1 Magnetic permeability. Magnetic permeability of the spring pins made
17、of 302 austenitic corrosion-resistant steel shall not be greater than 2.0 (Air = 1.257 pH/m) (microHenry per meter) at a field of 16 kA/m (kiloampere per meter) (see 4.8.4). 3.4.2 Double shear strength. The double shear strength of the spring pins shall be as specified on the applicable specificatio
18、n sheet. The spring pins shall be capable of withstanding the minimum double shear strength test for the respective materials (see 4.8.5). Spring pins which have been tested for double shear strength shall show a ductile shear without longitudinal cracks (see 4.8.6). 3.5 Finish. The protective finis
19、h of the spring pins when specified in the appl icamcification sheet shall be as fol lows (see 4.8.7) . 3.5.1 Black oiled finish. Carbon steel spring pins shall be furnished with a 3.5.2 Cadmium plate. Carbon steel spring pins shall be cadmium plated in black, tumbled, oil dipped finish in accordanc
20、e with MIL-C-13924, class 1, accordance with QQ-P-416, type II, class 2. Plating thickness shall be 7.6 pm (micrometers ) . 3.5.3 Passivate. Corrosion-resistant steel spring pins shall be passivated in accordance with ASTM A380. 3.5.4 Phosphate coating. Carbon steel spring pins shall be phosphate co
21、ated in accordance with DOD-P-16232, type Z, class 2. 15 p (micrometers) thick. ance with QQ-Z-325, type I, class 3. Coating thickness shall be 5.1 pm (micrometers). be in accordance with the applicable finish specification specified in 3.5 herein. Phosphate coating shall be 5 to 3.5.5 Zinc coating.
22、 Carbon steel spring pins shall be zinc coated in accord- 3.5.6 Hydrogen embrittlement re1 ief. Embrittlement re1 ief of spring pins shall 3 .- o Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DOD-P-63477 53 W 9777706 0109282 5 W DOD-P-63477 3.6 Har
23、dness . 3.6.1 a Carbon steel spring pins shall have a 3.6.2 Corrosion-resistant steel spring pins. hardness of 46HRC to 53HRC or equivalent. 3.6.2.1 Type I and type II spring pins. Type I and type II spring pins made of 302 austenitic corrosion-resistant steel shall be hardened by cold working. 420
24、corrosion-resistant steel shall have a hardness of 43HRC thru 52HRC. 3.6.2.2 Type I slotted spring pins. Type I slotted spring pins made of 3.6.2.3 Type II coiled spring pins. Type II coiled spring pins made of 420 corrosion-resistant steel shall have a hardness of 46HRC thru 55HRC. 3.7 Straightness
25、. Straightness of spring pins shall be within the limits necessary to permit spring pins to fall through a ring gage by their own weight (see 4.8.3). 3.8 Workmanship. The workmanship shall be uniform in quality and free of Edges and corners, as applicable shall be broken or rounded. irregularities o
26、r detrimental defects. The surfaces shall not contain any foreign matter. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the con- tract, the contractor is responsible for the performance of all inspection requirements as specified herein. the contrac
27、tor may use his own or any other facilities suitable for the per- formance of the inspection requirements specified herein, unless disapproved by the Government. inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescrib
28、ed requirements. Except as otherwise specified in the contract, The Government reserves the right to perform any of the 4.2 Classification of inspections. The inspection requirements specified herein are classified as follows: a. Material inspection (see 4.4). b. Qual i ty conformance inspection (se
29、e 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 thru 4.8.9. 4.4 Materials inspection. Naterials inspection shall consist of certification supported by verifying data that the materials used in
30、 fabricating the spring pins are in accordance with the applicable paragraphs listed in 3.2.1 thru 3.2.3. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DOD-P-b3977 53 77777Ob 01i07283 7 W DOD-P-63477 4.5 Qual i ty conformance inspection. Quality
31、conformance inspection shall Each spring pin which does not pass any of the be as specified in table I. tests specified shall be defective. 4.6 Qual i ty conformance inspection sampling. 4.6.1 Inspection lot. An inspection lot shall consist of all spring pins covered by a single specification sheet
32、produced under essentially the same conditions, and offered for inspection at any one time. TABLE I. Qual i ty conformance inspection. Inspection Test method I pa rag rap h I paragraph Requ i rement D imens ions Magnetic permeabil i ty Double shear strength Finish Hydrogen embri ttl ement re1 ief Ha
33、rdness 3.3, 3.7 3.4.1 3.4.2 3.5.4, 3.5.5 3.5.6 3.6 3.5.1, 3.5.2, 3.5.3, 4.8.1, 4.8.2, 4.8.3 4.8.4 4.8.5, 4.8.6 4.8.7 4.8.8 4.8.9.1, 4.8.9.2 4.6.2 Sampling for visual and dimensions examination. A random sample of spring pins shall be taken from each lot in accordance with MIL-STD-105 inspection leve
34、l II. The acceptable quality level (AQL) shall be as indicated in table II. The AQL shall apply to each individual defect, not to a group of defects. 4.6.3 Sampling for magnetic permeability test. Sampling for magnetic permeability of corrosion-resistant steel spring pins shall be in accordance with
35、 MIL-STD-105 in- spection level s-4, with an AQL of-2;5 percent defective. shall be in accordance with level S-4 of MIL-STD-105. The AQL shall be 2.5 percent defect ive. 4.6.4 Sampling for shear test. Sampling for shear test of steel spring pins 4.6.5 Sampling for finish test. Sampling for protectiv
36、e finish test of spring pins shall be in accordance with the applicable specification referenced in 3.5.1 thru 3.5.5. 4.6.6 Sampling for hardness test. Sampling for hardness test of steel spring pins shall be in accordance with level S-4 of MIL-STD-105. The AQL shall be 2.5 percent defect ive. Provi
37、ded by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DOD-P-63977 53 9777706 0107284 7 W DOD-P-63477 4.6.7 Sampling for hydrogen embrittlement re1 ief test. Sampling for hydrogen embrittlement relief test shall be in accordance with level S-4 of MIL-STD-105. Th
38、e AQL shall be 2.5 percent defective. TABLE II. Classification of defects. Category I Defect Cri tical I None defined Major 101 102 103 AQL = 1.5 percent defective Di ameter Length Straightness Mi nor 201 202 AQL = 2.5 percent defective End chamfers Edges and corners broken Inspection method _I SIE
39、1/ SI E SIE SIE Visual I/ Standard inspection equipment. 4.7 Packaging inspection. The sampling and inspection of the preservation, packaging, packing and container marking shall be in accordance with the re- . qu i remen ts of PPP-H-1581 . I 4.8 Methods of inspection. 4.8.1 Visual and dimensional e
40、xamination. Each spring pin taken as specified in 4.6.2 shall be examined to verify conformance with this specification. amination shall be conducted in accordance with table II. Ex- 4.8.2 Diameters. 4.8.2.1 Type I, slotted spring pins. The maximum diameter of the slotted spring pin as specified on
41、the applicable specification sheet, shall be inspected with a “go“ ring gage. This ring size shall have a length of hole not greater than 3.0 mm. The minimum diameter shall be determined by averaging the three diameters A-1, A-2 and A-3 shown on the applicable documents. These diameters shall be mea
42、sured at center of the spring pin with lengths 25.0 mm or shorter. If the length of the pin is greater than 25.0 mm, the minimum diameter shall be measured 6.0 mm from each end. 4.8.2.1.1 Slot dimensions. The dimensions and end configurations of the slot in the circumference of slotted type spring p
43、ins shall be such that spring pins in the free state will not interlock and that the sides of slot will not contact when spring pin is inserted into a hole of a diameter equal to the recommended minimum hole size within a tolerance of f 0.008 mm. The edges of slot inter- secting the spring pin diame
44、ter shall be broken or rounded. 6 - I- (- L Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DOD-P-63477 53 = 9777706 0309285 O Pin Gage length Gage hole diameter length rnax min min max Specified Spec if ied pl us pl us To and incl 25 25.15 24.85 0.2
45、0 0.21 Over 25 to 50 50.15 49.85 0.40 0.42 Over 50 75.15 74.85 0.60 0.63 pin dia max pin dia max 7 DOD-P-63477 Pin length To and incl. 24 Over 24 to 50 Over 50 4.8.2.2 Type II, coiled pins. The maximum diameter of the coiled spring pin, This ring gage shall have a length of hole not greater than 3.0
46、 mm. as specified on the applicable specification sheet, shall be inspected with a llgoll ring gage. The minimum diameter shall be inspected with a “no go“ ring gage. Gage length Gage hole diameter max min mi n max Spec i fi ed pin dia rnax Spec i fi ed pin dia rnax pl us pl us 25.15 24.85 0.19 0.20
47、 50.15 49.85 0.32 0.34 75.i5 74.85 0.45 0.48 4.8.3 Straightness. The straightness of the spring pins shall be determined by using a ring gage. The maximum inside diameter of the gage shall .be greater than the maximum diameter specified for the spring pins on the applicable specifi- cation sheet by
48、the amount of the straightness tolerance. The spring pins shall fall through this gage by their own weight. The gages shall be as specified in tables III and IV. TABLE III. Straightness limits for slotted spring pins (mm). TABLE IV. Straightness limits for coiled spring pins (mm). 7 - Provided by IH
49、SNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DOD-P-63Ll77 53 = 7777706 0309286 2 DOD-P-63477 4.8.4 Magnetic permeabil i ty test. When specified (see 6.2), corrosion- resistant steel spring pins taken in accordance with 4.6.3 shall be tested for compliance to the-magnetic permeability requirements of 3.4.1. The test indicator shall be in accordance with MIL-1-17214. . 4.8,5 Double shear strength test.
