1、INCH-POUNDA-A-55628A17 February 1998SUPERSEDINGA-A-556283 December 1997COMMERCIAL ITEM DESCRIPTIONNUT, PLAIN, CAP, HIGH CROWNUNC-2B AND UNF-2BThe General Services Administration has authorized the use of this commercial item description for all federal agencies.1. Scope. This Commercial Item Descrip
2、tion (CID) depicts the requirements for Nut, Plain, Cap, High Crown, coarse or fine threads, Class 22. Salient characteristics.2.1 Materials:2.1.1 Steel, carbon, Types UNS (G10180) thru (G10400), (G11160) thru (G11370) or (G12120) thru (G12144).2.1.2 Steel, corrosion resistant 300 series, Types UNS
3、(3XXXX) series.2.1.3 Copper alloys UNS (C23000) thru (C64600).2.1.4 Aluminum alloys UNS (A92017), (A92117), (A96061), or (A96262).2.1.5 Nylon in accordance with ASTM D4066, Group 1, Class 1 or 2 color natural white.Protective finish:2.2.1 Carbon steel cap nuts shall be cadmium plate in accordance wi
4、th QQ-P-416, Type II, Class 2.Cadmium plate cap nuts should be used only on aerospace applications. No additional codes required for part number.Zinc plate in accordance with ASTM B633 FE/ZN 5 Type II. Add letter “Z” to end of part number for zinc plate carbon steel cap nut.Nickel plate in accordanc
5、e with QQ-N-290 Class 2. Add letter “N” to end of part number for nickel plate carbon steel cap nut.2.2.2 Steel, corrosion resistant cap nuts shall be cleaned, descaled and passivated in accordance with ASTM A967. No additional codes required forpart number.2.2.3 Copper alloy cap nuts shall be black
6、 oxide coated in accordance with MIL-F-495. No additional codes required for part number.Nickel plate in accordance with QQ-N-290 Class 2. Add letter “N” to end of part number for nickel plate copper alloy cap nut.Plain cap nut with brite surface finish. Add letter “P” to end of part number.2.2.4 Al
7、uminum alloy cap nut shall be anodized in accordance with MIL-A-8625, Type II, Class 1. No additional codes required for part number.2.3 Threads shall be right hand UNC or UNF Class 2B in accordance with ASME B1.1. Thread acceptability shall be in accordance with ASMEB1.3M system 21.BENEFICIAL COMME
8、NTS, (RECOMMENDATIONS, ADDITION, DELETIONS, CLARIFICATIONS, ETC., AND DATA WHICHMAY IMPROVE THIS DOCUMENT SHOULD BE SENT TO: DEFENSE INDUSTRIAL SUPPLY CENTER, ATTN: DISC-AESD, 700ROBBINS AVENUE, PHILADELPHIA, PA. 19111-5096.ASMC N/A 1 OF 3 FSC 5310DISTRIBUTION STATEMENT A. APPROVED FOR PUBLIC RELEAS
9、E; DISTRIBUTION IS UNLIMITED.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-556282Table I. Dash numbersDash numbers Size Thread-2BCarbonSteelCres Brass Nylon Aluminum1612623635656667678689691070117112721373147415751676218122822383258526862787288
10、829893090319132923393349435953696411201412202413203415205416206417207418208419209420210421211422212423213424214425215426216511301512302513303515305516306517307518318519309520320521311522312523323524314525325526316611811612812613813615815616816617817618818619819620820621821622822623823624824625825626
11、826.138.164.190.250.3125.375.4375.500.5625.625.750.8751.0001.1251.25032UNC40UNF32UNC36UNF24UNC32UNF20UNC28UNF18UNC24UNF16UNC24UNF14UNC20UNF13UNC20UNF12UNC10UNF11UNC18UNF10UNC16UNF9UNC14UNF8UNC12UNF7UNC12UNF7UNC12UNFProvided by IHSNot for ResaleNo reproduction or networking permitted without license
12、from IHS-,-,-A-A-5562833. Quality Conformance Provisions.3.1 The suppliers shall be responsible for those in process controls and inspections necessary to supply a productconsistently conforming to the requirements of this document.3.2 Upon request, the suppliers will certify with documented test/in
13、spection evidence, that the part supplied meets therequirements of this document.4. Notes:4.1 All dimensions are in inches, unless otherwise specified. All dimensions and tolerances shall be in accordance withSAE J483.4.2 Interpret drawing in accordance with ASME Y14.5M.4.3 Preservation, packing, an
14、d marking shall be as specified in the contract or order.4.4 Cap nuts manufactured prior to date of this Commercial Item Description (CID) are acceptable for use until exhausted.4.5 The part identification number (PIN) shall consist of the basic CID number followed by a dash number from Table I,and
15、a surface finish code when applicable.Example: AA55628-1 ZFinish Code if applicableDesignates dash numberCID numberDesignates a CIDAA55628-1Z indicates Nut, plain, cap, high crown, .138-32 UNC-2B thread, carbon steel, Zinc plated.A Table II. Cross Reference Table.Cancelled MS PIN Replacement CID PIN
16、MS24680 - * 1/ AA55628 - * 1/1/ * Represents the same designation codes for both MS and CID PINS.Custodians: Preparing activity:Air Force - 99 DLA-ISArmy AR (Project 5310-2343)Navy SHReview activities:Army AV, ATNavy AS, MC, OSProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
