1、 ANSI/BHMA A156.2-2017 Revision of ANSI/BHMA A156.2-2011 BORED AND PREASSEMBLED LOCKS AND LATCHES SPONSOR BUILDERS HARDWARE MANUFACTURERS ASSOCIATION, INC. AMERICAN NATIONAL INSTITUTE Approved March 20, 2017 AMERICAN NATIONAL STANDARD An American National Standard implies a consensus of those substa
2、ntially 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 approved the Standard or not, fro
3、m 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 National Standard may be revised or with
4、drawn 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 current information on all Standards
5、 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 2017 by the Builders Hardware Manufacturers Association, Inc. Not to be reproduced without specific authorization
6、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 canvass method. BHMA was accredited on
7、21 March 1983 as a sponsor using the Canvass Method. 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, a sectional classification system h
8、as 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 therefore a collection of sections, each co
9、vering 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 and forceful attack are not fully cov
10、ered. 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 of improved products, methods and
11、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 responsibility of manufacturers to request
12、 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 which indicate functions of locks and
13、 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 affecting the functions of locks used
14、 on fire doors and doors within a means of egress. Only functions compatible with the requirements of the applicable building codes are used. TABLE OF CONTENTS 1. SCOPE 5 2. DEFINITIONS 5 3. GENERAL 6 5. DESCRIPTION AND FUNCTION NUMBERS OF SERIES 2000 PRE-ASSEMBLED LOCKS 8 6. DESCRIPTION AND FUNCTIO
15、N NUMBERS OF SERIES 4000 BORED LOCKS AND LATCHES10 7. GENERAL TEST PARAMETERS 14 SAMPLE TEST LOCKS 14 8 TEST EQUIPMENT AND FIXTURES 15 9. OPERATIONAL TESTS 17 10 STRENGTH TESTS . 20 11. CYCLE TEST 23 12. SECURITY TESTS . 25 13. MATERIAL EVALUATION TESTS 28 14 FINISH TESTS 30 APPENDIX A USERS GUIDE (
16、NOT A PART OF ANSI/BHMA A156.2) . 32 1. SCOPE 1.1 This Standard establishes performance requirements for bored and preassembled locks and latches, and includes dimensional criteria, operational tests, strength tests, cycle tests, security tests, material evaluation tests, and finish tests. 1.2 Tests
17、 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 of their locks. Locks shall meet
18、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 centerline of the door thickness to
19、 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 lock front in its extended positi
20、on, 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 latch bolt incorporating a plunger
21、 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 Cylinder Body The portion of a cylinder
22、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 designated key without disassembly of
23、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 2.6.1 Preassembled Lock Series 2000
24、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 Push Button and Related Terms 2.8.1
25、 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 rotated, locks the outside operating
26、 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. 2.9 Indicator Button The component of a hotel guest room lock which when activated, indicates on the outsid
27、e 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 back of a strike to enclose the bolt or
28、 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 level found in the ANSI/BHMA Standard A
29、156.5-2014 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 equivalent to that of cylinders. Suf
30、fix 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 entry elsewhere on the property. No l
31、ock 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 professional. For applications where p
32、ick 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. 3.4 Trim Roses, escutcheons, knobs, l
33、evers, turns, paddles, cylinder guards shall cover all door preparation openings. 3.5 Reference to other Standards Referenced standards are available from , www.ansi.org, www.astm.org, and . 3.6 Values Required values in this Standard are given in US units. The SI (metric) equivalents are approximat
34、e. 3.7 Door and Frame Preparation The lock models described in this standard shall fit the door and frame preparations 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 Buildi
35、ng Codes Certain lock functions described in this standard are not permitted on doors within a means of egress. Consult 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 Recognize
36、d Testing Laboratory (NRTL) and shall be under an in-plant follow-up inspection service. 3.9 Tolerances All values which do not carry specific tolerances or are not marked maximum or minimum shall have the following tolerances: Linear dimensions shall be 1/16 in. (1.6 mm). Weight or force shall be 2
37、%. Angles shall be 2 degrees. Where only minus tolerances are given, the dimensions are permitted to be exceeded at the option of the manufacturers. 4. DIMENSIONAL CHARACTERISTICS 4.1 Door Preparation The specifications for the door thickness for these products are defined in the ANSI/BHMA A156.115
38、series standards. Typical thicknesses are 1 3/8 in. and 1 3/4 in. (35 mm and 44 mm); consult hardware manufacturer for other sizes. 4.2 Series 2000 Preassembled Locks and Latches are only available in Grade 1 and only with dead locking latch bolts. Series 4000 Locks and Latches are available in Grad
39、es 1, 2 and 3. 4.3 Latch bolt projection: minus 1/16 in. (1.6 mm) tolerance. Grades 1 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 Strike and Mount Information Strikes furnished with wood screws sh
40、all 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. Measuring Equipment All instruments and equipment used to conduct tests for recording data need
41、 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 recommendation of the particular test equipment manufacturer with a minimum
42、 being once per year. Measuring equipment used shall have a known measurement error and be capable of qualifying the value being measured. 8 TEST EQUIPMENT AND FIXTURES 8.6.1 Mechanically operated test door Provide a mechanically operated test door or panel a minimum of 30 in. (762mm) and 36 in. max
43、imum (914 mm) wide simulating the normal operation of the lock set through a cycle consisting of (a) operating the lever or the knob to retract the latch bolt from the strike as specified in Cycle Test 11; (b) opening the door to clear the strike without contact; (c) releasing the lever or knob, to
44、fully project the latch bolt; and (d) closing the door to produce full latching by means of a door closer or other suitable device. 8.6.2 Lockset Impact Test fixture See ASTM F476, paragraphs 4.2 and 5.2. The fixture is permitted to be increased in size up to 36 in. (915 mm) square. The door shall b
45、e equipped with a simulated stop on the impact side to reduce rebound. 8.6.3 Strength Test Fixture 8.6.4 Cylinder Assembly Pulling Test Fixture 8.6.5 Cylinder Assembly Torque Test Fixture 8.6.6 Cutaway Strike Attachment Cutaway Strike Attachment shown below. 9. OPERATIONAL TESTS 9.1 Force to Retract
46、 Unloaded Bolt (Use no strike and 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
47、levers both upwards and downwards. 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 th
48、e 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. Apply a perpendicular load at
49、a point 1/4 in (6.4 mm) from the end of the thumb piece until the bolt is withdrawn to within 1/8 in. of the lock front The maximum load shall not exceed the value specified. 9.1.4 By Paddle. A force meter shall be applied to the outside paddle in the direction of the opening swing of the door 1 in. (25.4mm) from the free end of the paddle on the centerline until the bolt is withdrawn to within 1/8 in. of the lock front. Repeat to the inside paddle in the direction of the opening swing of the door 1 in. (25.4mm) from the
