1、I INCH-POUND I MS21949B 20 September 2000 SUPERSEDING MS21949A 13 May 1966 DETAIL SPEC I FI CATI ON SHE ET BOLT-CLUSTE R FITTI NG , SI NG LE PORT- FLARE This specification is approved for use by all Departments and Agencies of the Department of Defense. LT THREAD - 2 x 15“ * 5“ CHAMFER TO “D“ FITTIN
2、G END IN ACCORDANCE WITH SAE AS4395 STYLE E FOR TUBE SIZE SPECIFIED FITTING END IN ACCORDANCE WITH MS21932 FOR FLOW SIZE SPECIFIED FIGURE 1. Bolt. Cluster Fitting. 1 Of4 AMSC N/A FSC 4730 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Licensed by Information Handli
3、ng ServicesMS21949B TABLE IA. Dimensions for low flow sizes Low flow size AI alloy I AI alloy1/ Tube OD 7075- W3L W4L W5L W6L W8L Thread S SAE AS8879 201 4/2024 -3L .187 -4L .250 -5L .312 -6L .375 -8L .500 .375-24U N J F-3A .4375-20UNJF-3A .500-20UNJF-3A .5625-18UNJF-3A .750-16UNJF-3A Thread T SAE A
4、S8879 TABLE IA. Dimensions for low flow sizes - Continued - 1/ Aluminum alloy 201 4 and 2024 parts are cancelled. Use Aluminum alloy 7075 parts for new design. Cancelled parts may be used till stock is exhausted. 2 Licensed by Information Handling ServicesMS21949B High flow size AI alloy AI alloy I/
5、 7075 201 4/2024 W6H -6H W8H -8H W1 OH -1 OH Tube Thread S Thread T OD SAE AS8879 SAE AS8879 .375 .5625-18UNJF-3A .500 .750-16UNJF-3A .5625-18UNJF-3A .625 .875-14UNJF-3A A 1.688 1.688 1.688 REQUIREMENTS: B C D E F H Hex 2.681 - .855 2.000 .297 .875 +.O03 - .o10 2.782 - .980 2.125 .391 1.000 + .O03 -
6、 .o10 2.883 .937 1.103 2.1 88 .422 1.125 +.O03 - .o12 I .O62 I .o10 I .O62 I .O03 1. The requirements for acquisition of the product described herein shall consist of this detail specification sheet and SAE AS4875/1. 2. Material: Aluminum alloy bar 7075-T73 per AMS-QQ-A-225/9. 3. Finish: See standar
7、d SAE AS4875. Aluminum alloy 7075 fittings shall be dyed brown. 4. All outside machined surfaces shall be finished to 125 pin Ra; all inside machined surfaces and hex flats of bar stock shall be finished to 250 pin Ra, unless otherwise specified. Surface finish shall be in accordance with ASME B46.1
8、 5. Fittings shall be free of all burrs and slivers. 3 Licensed by Information Handling ServicesMS21949B NOTES: 1. Dimensions in inches. Unless otherwise specified, tolerances: decimals . .O1 O, angles . 1/2“. 2. Dimensioning and tolerancing per ASME Y14.5. 3. Part Identification number (PIN) Example of PIN: MS21949W4L I Material code “W replaces the dash (-) for al allov 7075 Basic part identifier Size 4 low flow fitting Custodians: Navy - AS DLA - CC Preparing activity: DLA-CC (Project 4730-2067) Review activity: Navy - SA 4 Licensed by Information Handling Services
