1、 ANSI/BHMA A156.2-2011 Revision of ANSI/BHMA A156.2-2003 AMERICAN NATIONAL STANDARD FOR BORED AND PREASSEMBLED LOCKS AND LATCHES SPONSOR BUILDERS HARDWARE MANUFACTURERS ASSOCIATION, INC. American Standards Institute Approved July 22, 2011 2 AMERICAN NATIONAL STANDARD An American National Standard im
2、plies a consensus of those substantially concerned with its scope and provisions. An American National Standard is intended as a guide to aid the manufacturer, the consumer and the general public. The existence of an American National Standard does not in any respect preclude anyone, whether he has
3、approved the Standard or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the Standard. American National Standards are subject to periodic review and users are cautioned to obtain the latest editions. CAUTION NOTICE: This American Nationa
4、l Standard may be revised or withdrawn at any time. The procedures of the American National Standards Institute require that action be taken to reaffirm, revise, or withdraw this Standard no later than five years from the date of publication. Purchasers of American National Standards may receive cur
5、rent information on all Standards by calling or writing The American National Standards Institute. Published by BUILDERS HARDWARE MANUFACTURERS ASSOCIATION, INC. 355 Lexington Avenue New York, New York 10017 Copyright 2011 by the Builders Hardware Manufacturers Association, Inc. Not to be reproduce
6、d without specific authorization from BHMA Printed in the USA This Standard was first published July 1970 by the Builders Hardware Manufacturers Association, Inc. It was entitled “Standard 601 BHMA Product Standards Section F, Locks and Lock Trim.“ This Standard was approved by ANSI under the canvas
7、s method. BHMA was accredited on 21 March 1983 as a sponsor using the Canvass Method. 3 FOREWORD (This Foreword is not a part of ANSI/BHMA A156.2) The general classification of builders hardware includes a wide variety of items which are divided into several categories. To recognize this diversity,
8、a sectional classification system has been established. Locks and Lock Trim is one such section and this Standard is the result of the collective efforts of members of the Builders Hardware Manufacturers Association, Inc. who manufacture these products. The total Product Standards effort is therefor
9、e a collection of sections, each covering a specific category of items. Performance tests and, where it has been necessary, dimensional requirements have been established to insure safety, security and stability to which the public is entitled. Performance criteria for resistance to surreptitious an
10、d forceful attack are not fully covered. There are no restrictions on design except for those dimensional requirements imposed for the reasons given above. It is also required that locks fit certain cut-out dimensions. This Standard is not intended to obstruct but rather to encourage the development
11、 of improved products, methods and materials. The BHMA recognizes that errors will be found, items will become obsolete, and new products and methods will be developed. With this in mind, the Association will update, correct and revise these Standards on a regular basis. It shall also be the respons
12、ibility of manufacturers to request such appropriate revisions. Bored locks have been described in three grade levels related to performance and security. Choice of grade and specific products are made on the basis of utility, aesthetics, security objectives and end use required. The BHMA numbers wh
13、ich indicate functions of locks and latches do not identify grade, finish or design and are not intended to be used without necessary supplementary information. Individual manufacturers catalogs are to be consulted. Users of this Standard consult applicable local building codes as to requirements af
14、fecting the functions of locks used on fire doors and doors within a means of egress. Only functions compatible with the requirements of the applicable building codes are used. 4 TABLE OF CONTENTS 1. SCOPE 5 2. DEFINITIONS 5 3. GENERAL 6 4. DIMENSIONAL CHARACTERISTICS 7 5. DESCRIPTION AND FUNCTION N
15、UMBERS OF SERIES 2000 PRE-ASSEMBLED LOCKS . 7 6. DESCRIPTION AND FUNCTION NUMBERS OF SERIES 4000 BORED LOCKS 9 7. GENERAL TEST PARAMETERS 13 8. SAMPLE TEST LOCKS . 15 9. OPERATIONAL TESTS 15 10 STRENGTH TESTS . 18 11. CYCLE TEST 21 12. SECURITY TESTS . 22 13. MATERIAL EVALUATION TESTS 25 14 FINISH T
16、ESTS 27 APPENDIX A USERS GUIDE (NOT A PART OF ANSI/BHMA A156.2) . 29 5 1. SCOPE 1.1 This Standard establishes performance requirements for bored and preassembled locks and latches, and includes cycle tests, strength tests, operational tests, security tests, material evaluation tests, finish tests, a
17、nd dimensional criteria. 1.2 Tests described in this Standard are performed under laboratory conditions. In actual usage, results vary because of installation, door and frame construction, maintenance and environmental conditions. 1.3 Grade Qualifications Manufacturers shall indicate the Grade level
18、 of their locks. Locks shall meet all tests for their grade listing. A Grade 1 lock shall meet all Grade 1 criteria, a Grade 2 lock shall meet all Grade 2 criteria, and a Grade 3 lock shall meet all Grade 3 criteria. 2. DEFINITIONS 2.1 Backset The distance from the edge of the door measured at the c
19、enterline of the door thickness to the centerline of the cylinder or spindle. 2.2 Bolts 2.2.1 Auxiliary Dead Latch A plunger which, when actuated, automatically locks a projected latch bolt against return by end pressure. 2.2.2 Latch Bolt A lock component having a beveled end which projects from the
20、 lock front in its extended position, but is forced back into the lock case by end pressure or drawn back by action of the lock mechanism. When the door is closed, the latch bolt projects into a hole provided in the strike, holding the door in a closed position. 2.2.3 Dead Locking Latch Bolt A type
21、latch bolt incorporating a plunger which, when depressed, automatically locks the projected latch bolt against return by end pressure. Also called dead latch. 2.3 Cylinders 2.3.1 Cylinder The subassembly of a lock containing a plug with a keyway and cylinder body with tumbler mechanism. 2.3.2 Cylind
22、er Body The portion of a cylinder that surrounds the plug and contains the tumbler mechanism. 2.3.3 Cylinder Plug A component of the cylinder within the body which is actuated when the correct key is inserted. 2.3.4 Interchangeable Core Cylinder A cylinder that is removable from the lock with a desi
23、gnated key without disassembly of the lock. 2.4 Lever Catch Also called knob catch. The spring activated retainer which engages the lever in order to maintain its attachment to the lever spindle. 2.5 Lock Front A plate fastened to the edge of a door through which the bolt(s) pass. 2.6 Lock Series 2.
24、6.1 Preassembled Lock Series 2000 A lock fitting into a notched cutout in a door. 2.6.2 Bored Lock Series 4000 A lock installed in a round bored opening in the edge and face of a door. 2.7 Operating Trim Lock components including levers, knobs, paddles, or handlesets and equivalent components. 2.8 P
25、ush Button and Related Terms 2.8.1 Push Button Code Mechanism A mechanism used in place of, or in conjunction with a key and cylinder. 2.8.2 Push Button A single inside locking device that when depressed, locks the outside operating trim. 2.8.3 Turn Button A single inside locking device that when ro
26、tated, locks the outside operating trim. 2.8.4 Combination Push Button/Turn Button A single inside locking device that when depressed, locks the outside operating trim, or when depressed and rotated maintains the locked state. 6 2.9 Indicator Button The component of a hotel guest room lock which whe
27、n activated, indicates on the outside that the room is occupied. 2.10 Spindle A lock component which transfers operating trim rotation to the lock mechanism. 2.11 Strike A mortised or surface mounted plate fastened to the door frame into which the bolts project. 2.12 Strike Box A housing used in bac
28、k of a strike to enclose the bolt or bolt openings. 2.13 Thumb Piece A lever projecting from a handle pressed by the thumb to retract a latch bolt. 3. GENERAL 3.1 Cylinders Cylinders supplied or mated with locks shall meet the performance requirements for the appropriate cylinder types and grade lev
29、el found in the ANSI/BHMA Standard A156.5-2010 for Cylinders and Input Devices for the lock to retain its grade listing. Assemblies take the grade level of the lowest graded component. Other mechanisms are permitted to be used in lieu of cylinders providing the performance and security criteria are
30、equivalent to that of cylinders. Suffix D shall be indicated in the certified products directory for locks to be used only with drill resistance cylinders as evaluated in A156.5. 3.2 No lock can provide complete security by itself. Locks may be defeated by forcible or technical means, or evaded by e
31、ntry elsewhere on the property. No lock can substitute for caution, awareness of your environment, and common sense. Builders hardware is available in multiple performance grades to suit the application. In order to enhance security and reduce risk, consult a qualified locksmith or other security pr
32、ofessional. For applications where pick resistance and other higher security protections are required users should consider locks meeting UL 437 or ANSI/BHMA A156.30 for High Security Cylinders. 3.3 Operating Trim Where levers are referenced, knobs, paddles, or handlesets are permitted to be used. 3
33、.4 Trim Roses, escutcheons, knobs, levers, turns, paddles, cylinder guards shall cover all door preparation openings. 3.5 Reference to Other Standards The following Standards are referenced within: ASTM F476 R1996, Security Tests for Swinging Door Assemblies; ANSI/BHMA Standard A156.5-2008 for Cylin
34、ders and Input Devices, ANSI/BHMA Standard A156.12-2005 for Interconnected Locks, ANSI/BHMA Standard A156.13 2005 for Mortise Locks, ANSI/BHMA Standard A156.18 2006 for Materials and Finishes, ANSI/BHMA A156.25-2002 for Electrified Locking Devices, ANSI/BHMA A156.36 for Auxiliary Locks. ANSI Standar
35、ds are available from BHMA, . ASTM Standards are available from www.astm.org. 3.6 Values Required values in this Standard are given in US units. The SI (metric) equivalents are approximate. 3.7 Door and Frame Preparation The lock models described in this standard shall fit the door and frame prepara
36、tions described in the ANSI/BHMA A156.115 Series. Other configurations are permitted to fit special opening templating requirements. See manufacturers instructions for details. 3.8 Building Codes Certain lock functions described in this standard are not permitted on doors within a means of egress. C
37、onsult local authority having jurisdiction. When locks and latches are used in fire door assemblies, they shall have been tested and listed for use in fire doors by a Nationally Recognized Testing Laboratory (NRTL) and shall be under an in-plant follow-up inspection service. 7 4. DIMENSIONAL CHARACT
38、ERISTICS 4.1 Latch bolt projection: minus 1/16 in. (1.6 mm) tolerance. 4.1.1 Series 2000 with dead locking latch bolts. Series 2000 preassembled locks and latches are available only in Grade 1. All Grades in. (12.7mm) 4.1.2 Series 4000 with dead locking latch bolts. Series 4000 bored locks and latch
39、es are available in Grades 1, 2 and 3. All Grades: in. (12.7 mm). 4.1.3 Series 4000 with latch bolts that are not dead locking: Grades 1 (b) opening the door to clear the strike without contact; (c) releasing the lever or knob, to fully project the latch bolt; and (d) closing the door to produce ful
40、l latching by means of a door closer or other suitable device. 14 7.6.2 Lockset Impact Test fixture See ASTM F476, paragraphs 6 and 8. The fixture is permitted to be increased in size up to 36 in. (915 mm) square. The door shall be equipped with a simulated stop on the impact side to reduce rebound.
41、 7.6.3 Strength Test Fixture 7.6.4 Cylinder Assembly Pulling Test Fixture 7.6.5 Cylinder Assembly Torque Test Fixture 7.6.6 Strike Attachments Where specified within this Standard, use the manufacturers supplied strike and mounting instructions. Cutaway Strike Attachment shown below. 15 7.6.7 Strike
42、 and Mount Information Strikes furnished with wood screws shall be applied with a wood backing to accommodate attachment. Combination screws shall be tested in the metal strike attachment. See respective sections for actual strike and mount (wood or metal) to use. 7.8 Measuring Equipment All instrum
43、ents and equipment used to conduct tests for recording data need to be calibrated and maintained for effectiveness and continued accuracy. Calibration of equipment shall be traceable to the National Institute of Standards and Technology (NIST). The frequency of calibration depends on the recommendat
44、ion of the particular test equipment manufacturer with a minimum being once per year. Measuring equipment used shall have a known measurement error and be capable of qualifying the value being measured. 7.9 Inside Locked Trim Tests Functions with Keyed Inside Locked Trim are subject to the same test
45、s as Locked Outside Trim unless otherwise specified. Use separate samples. 8. SAMPLE TEST LOCKS Operational and Cycle Tests Strength Tests Security Tests Finish Tests per Finish Material Evaluation Test 4 lock samples (use same 3 specimens for all operational and cycle tests, and one additional for
46、cylinder cycle ) 3 lock samples (use same specimens for all strength tests) 7 total, one specimen each test; 11 for double locking functions 5 trim parts or coupons when required. 1 lock sample may be used for the knob crush, rose dent and rose deformation Tests shall be made using standard sets. Co
47、mplete instructions and templates shall be included. Failure of any one lock in any of the tests shall constitute failure of the complete qualification tests. See Chart 1 in the appendix for information on tests by function. 9. OPERATIONAL TESTS 9.1 Force to Retract Unloaded Bolt (Use no strike and
48、either wood or metal mount) 9.1.1 By Lever A torque meter shall be applied to the lever until the bolt is withdrawn to within 1/8 in. of the lock front. The measured torque to retract the bolt shall not exceed the maximum specified. Test both the outside and inside levers both upwards and downwards.
49、 When the lever is unidirectional, test only in the direction of operation. 9.1.2 By Knob A torque meter shall be applied to the knob until the bolt is withdrawn to within 1/8 in. of the lock front. The maximum measured torque to retract the bolt shall not exceed the maximum specified. Test both the outside and inside knobs clockwise and counterclockwise. When the knob is unidirectional, test only in the direction of operation. 9.1.3 By Thumb Piece. Center punch the thumb piece to receive a pointed rod connected to a force meter.
