1、F, _. MIL-HDBK-271-106 20 .JANUARY -1 986 B+ STRUCTURAL PANEL FASTENERS-INSTALLATION AND REMOVAL METHODS FOR f MIL-F-856 16, MIL-F-856.1 7 AND .MIL-F-856 18 ! AMSC NIA FSC 53GP Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-HDBK-271-106 DEPARTME
2、NT OF DEFENSE WASHINGTON 25 OC 20361 MIL-HDBK-271-106 Structural Panel Fasteners, Installation and Reme.val Methods 1. This standardization handbook was developed by the Department of Defense in accordance with established procedure. 2. This publication was approved on 20 January 1986 for printing a
3、nd inclusion in the military standardization handbook series. 3. This handbook provides installation and removal methods for structural panel fasteners including hole preparation and procedures for installing and removing the grommet, sleevebolt, and receptacle barrel. It will provide valuable infor
4、mation and guidance to mechanics at Navy, Army and Air Force Rework Facilities. 4. This handbook is not to be referenced in procurement specifications except for information purposes, nor shall it supersede any specification requirements. 5. Every effort has been made to include the latest informati
5、on on installation and removal methods of panel fasteners. Mechanics should review this handbook periodically. Users of this handbook are encouraged to report any errors or recom- mendations to the Commanding Officer, Naval Lakehurst, NJ 08733. .Air Engineering Center, Code 93, SESD, 6. The individu
6、al parts covered in this hand- book should be ordered under the specifi- cation sheets associated with MIL-F-85616 (stud), MIL-F-85617 (receptacle), and MIL- G-85618 (grommet). Specifics .concerning the part numbering scheme are covered in Section . 4. Provided by IHSNot for ResaleNo reproduction or
7、 networking permitted without license from IHS-,-,-CONTENTS Paragraph Page 1. SCOPE . 1 1.1 Scope . 1 2. REQUIREMENTS AND METHODS 2 2.1 Panel hole preparation 2 2.2 Substructure hole preparation . 2 2.3 Grornnet installation and removal. 3 2.3.1 Installing grommet into panel . 3 2.3.2 Removing gromm
8、et from metal panels 4 2.3.3 Removing grommet from composite 2.4 panels 5 Sleevebolt. installation and removal . 5 2.4.1 Installing sleevebolt into grommet . 5 2.4.2 Removing sleevebolt from grommet. 6 2.5 Receptacle barrel installation . and removal . 7 2.5.1 Installing barrel into sub- structure 7
9、 2.5.2 Barrel removal 8 3. COMPLETING INSTALLATION . 8 3.1 Final seating torque 8 4. PARTS NUMBEKI NG AND TOOLING PROCUREMENT . 9 4.1 4.2 Stud number example . 9 Receptacle number example . . . . . . . 9 4.3 Grommet number example 9 4.4 Tooling procurement . 9 ii Provided by IHSNot for ResaleNo repr
10、oduction or networking permitted without license from IHS-,-,-MIL-HDBK-271-106 1. SCOPE 1.1 Scope. This handbook covers the use and maintenance of structural panel fasteners. It illustrates use of the installation and removal tools, product identification, panel preparation and seating torque values
11、. Figure 1 shows the various parts of the assembly. TTSLEE VEBOLT PANEL GROMMET RING ASSY. GASKEP ASSEMBLY FIGURE 1. Parts of fastener assembly. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. : 2. REQUIREMENTS AND METHODS 2.1 Panel hole preparatio
12、n. Prepare the panel hole -for grommet installation in accordance with Figure 2 and Table I. LE3 dia.4 FIGURE 2. Panel hole meDaration. TABLE I. Panel hole dimensions. I Di ameter B Dia. A Dia. Dia.-Nom. Dash No. Fastener -4 I .250“ .403 I ,316 1 .393 .312 -5 .375 .476 .379 .486 ,312“ I I I I I 1 -6
13、 ,472 ,568 .375“ .558 .468 i 2.2 Substructure hole preparation. Prepare hole for receDtacle in accordance with Fiaure 3 d and Table II. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-R-J dia. tY P. MIL-HDBK-271-106 II I I FIGURE 3. Substructure ho
14、le DreDaration. TABLE 2. Substructure hole dimensions. Di ameter Dash No. Di a. Rivet Dia. -4 .O98 .873 .313 .lo3 .877 .318 -5 .O98 .748 ,253 ,103 .752 .257 -6 .130 .998 .377 .135 1.002 ,383 2.3 Grommet installation and removal. 2.3.1 Installing grommet into panel. Insert qrommet shank into fastener
15、 hole from the bottom ;ide so that large diameter of grommet is against the inside of the panel. Put threaded stud assembly of installation tool through gromet and fastener hole from the inside and engage the nut component (see Table III). “Install“ end of nut should be toward the grommet. Turn nut
16、until it contacts the grommet. Inspect to ensre that grommet and tool are properly seated, then wrench until the shank is flared to fit the countersink and the grommet is difficult to turn (70 inch pounds max). Figure 4 illustrates this procedure. Provided by IHSNot for ResaleNo reproduction or netw
17、orking permitted without license from IHS-,-,-MIL-HDBK-271-106 TABLE III. Installation and removal tools. Fastener Fastener Dash No. Di a-Nom. .250“ -4 Tool No.* NST 130-6 .375“ -6 NST 130-5 .312“ -5 NST 130-4 *See 4.4. r PANEL THREADED STUD ASSEMBLY, FIGURE 4. Grommet installation. COMPONENT W -NEW
18、 GROMMET 2.3.2 Removing gromet from metal panels. Insert proper threaded stud assembly through grommet from the inside and engage the nut component (see Table III) with “Remove“ end toward gromet. Hand turn nut .to engage with grommet, then wrench the hexagon components of both the nut and the stud
19、assembly until the grommet shank is severed. A sudden easing of wrench torque will be felt when the gromet breaks. Disassemble tool and remove debris. 4 II !: Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-HDBK-271 -Lob 53 9993970 0007042 O MIL-
20、HDBK-271-106 2.3.3 Removing gromet from composite panels. Insert pilot of removal tool through grommet from countersunk side (see Figure 5 and Table IV). Push down knurled sleeve and restrain from rotating. Turn handle clockwise until grommet shank severs. NST- 142-6 FIGURE 5. Grommet removal tool f
21、or comosite amlications. TABLE IV. Gromet removal tools fnr comosite amlications. First Dash Fastener No. of Grommet Tool No.* Dia-Nom. -4 142-5 .312“ -5 142-4 .250“ -6 142-6 .375“ *See 4.4. 2.4 Sleevebolt installation and removal. 2.4.1 Installing sleevebolt into grommet. Sleevebolt is fitted into
22、the installed grommet ring assembly using finger pressure and slight rocking motion to engage ring. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-2.4.2 Removing sleevebolt from grommet. Engage threaded stud of NST-132 tool (see Table V) into sleeve
23、bolt to its full depth arid hand tighten. Engage hexagon driver to prevent sleevebolt rotation. Turn the NST-132 tool by wrenching on its hexagon two or three rotations until the tool cuts the lip of the sleevebolt away. After the tool is removed, the sleevebolt may be pushed from the grommet. This
24、alignment is il- lustrated by Figure 6. A new sleevebolt may now be installed from the top side of the panel. r SLEEVEBOLT HEXAGON DRIVER / PANEL-“ “-GROMMET FIGURE 6. Sleevebol t removal. TABLE V. Sleev.ebolt removal tools. r Fastener Tool No.* 1 Di a-Nom. Dash No. Fastener -4 NST132-4 ,250“ -5 NST
25、132-5 1 .312“ -6 NSTl32-6 .375“ J *See 4.4. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-HDBK-271-106 2.5 Receptacle barrel installation and removal. 2.5.1 Installing barrel into substructure. Insert one lug into shell which has been riveted
26、 to the substructure, Strike the opposite lug with a screwdriver as shown in Figure 7. An al ternate method is to insert barrel assembly into installation tool (see Table VI), engage one lug in she1 1 and rock tool unti 1 barrel assembly snaps into place. T FIGURE 7. Barrel installation. ABLE VI. Ba
27、rrel instal lation and removal tool s. Receptac 1 e Assy No. Installation Removal Tool Part Too 1 First Dash Number* Part Fastener Number Number* Di a. -Nom. -4 NST-125-4 NR- 2 ,250“ -5 NST-125-6 NR-3 .375“ -6 NST-125-5 NR- 1 ,312“ A *See 4.4. 7- “. Provided by IHSNot for ResaleNo reproduction or ne
28、tworking permitted without license from IHS-,-,-2.5.2 Barrel removal. Insert removal tool (as specified in Table VI) with downward pressure, between receptacle barrel assembly and shell. See Figure 8. Press against barrel assembly to insure engagement. Barrel assembly will snap out with a simple pry
29、ing motion. FIGURE 8. Barrel removal. 3. COMPLETING INSTALLATION 3.1 Final seating torque. To complete instal- lation of the fastener, apply the torque specified in Table VII. TABLE VII. Final seating torque. First Dash Torque Fastener Number Inch-Pounds Dia.-Nom. -4 95-1 10 .375“ -6 40-50 ,312“ -5
30、30-40 .250“ L Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-HDBK-271 -Lob 53 W 9999970 0007046 B W MIL-HDBK-271-106 4. PARTS NUMBERING AND TOOLING PROCUREMENT 4.1 Stud number example. M85616/1 -4 -8 1“l- L Grip and length dash number .376 to .5
31、00 grip ,964 to .984 length I- Diameter dash number in sixteenths of an inch - .2500 inches L Basic specification sheet number 4.2 Receptacle number example. Diameter dash number in sixteenths of an inch - .2500 inches Basic specification sheet number 4.3 Grommet number example. M85618/2 -U 4 -1 4.4
32、 “ -L“ Grip dash number - .O75 to .O95 inch panel thickness Fastener di ameter dash number - .250 inch Materi al : “U“ for AISI 304 passivated, I-“ for AISI 304 cadmium plated Basic specification sheet number Tooling procurement. The tools described and referenced in this handbook are available from
33、: SPS Technologies 2701 South Harbor Boulevard Santa Ana, CA 92707 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Cusilodians: Preparing Activity: - Navy - AS Navy - AS Air Force - 11 Project No. 53GP-0149-07 Army - AV “ . 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
