°copyright 1997 aerospace industries association of

NATIONAL AEROSPACE STANDARD °COPYRIGHT 1997 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA, INC

ALL RIGHTS RESERVED

NASM1312-20 STANDARD PRACTICE

FASTENER TEST METHODS

METHOD 20

SINGLE SHEAR

Aerospace Industries Association

THE INITIAL RELEASE OF THIS DOCUMENT SUPERSEDES MIL-STD-1312-20

DESIGNATION FOR THIS TEST METHOD REMAINS MIL-STD-1312-20

LIST OF CURRENT SHEETS NO. 1 2 3 4 5 6 7 8 9

REV. NEW NEW NEW NEW NEW NEW NEW NEW NEW NO. 10 11 12 13 14

REV. NEW NEW NEW NEW NEW

FSC 53GP

APPROVAL DATE AUOUST 1997

USE OF OR RELIANCE UPON THIS DOCUMENT OR ANY AEROSPACE STANDARD IS ENTIRELY VOLUNTARY AIA DOES NOT QUALIFY SUPPLIERS OR CERTIFY CONFORMANCE OF ITEMS PRODUCE!) UNDER AEROSPACE STANDARDS . AIA MAKES NO REPRESENTATION OR CLAIM RESPECTINO (1) THE SUITABILITY OF ITEMS FOR ANY PARTICULAR APPLICATION OR (2) THE EXISTENCE OF OR APPLICABILITY THERETO OF PATENT OR TRADEMARK RIOHTS.

Reproduced by GLOBAL ENGINEERING

SHEET 1 OF 14

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NATIONAL AEROSPACE STANDARD OCOPYRIGIIT 1997 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA, INC

ALL RIGHTS RESERVED

NASM1312-20

FOREWORD

This standard sets forth a standard test method to define the procedure and apparatus for testing fasteners in single shear.

SHEET 2 APPROVAL DATE AUGUST 1997 USE OF OR RELIANCE UPON THIS DOCUMENT OR ANY AEROSPACE STANDARD IS ENTIRELY VOLUNTARY AIA DOES NOT QUALIFY SUPPLIERS OR CERTIFY CONFORMANCE OF ITEMS PRODUCED UNDER AEROSPACE STANDARDS . A1A MAKES NO REPRESENTATION OR CLAIM RESPECTING (1) THE SUITABILITY OF ITEMS FOR ANY PARTICULAR APPLICATION OR (2) THE EXISTENCE OF OR APPLICABILITY THERETO OF PATENT OR TRADEMARK RIGHTS.

NATIONAL AEROSPACE STANDARD OCOPYRIGHT 1997 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA, INC

ALL RIOIITS RESERVED

Paragraph

TABLE OF CONTENTS

NASM1312-20

Sheet

1. SCOPE 5 1.1 Applicability 5

2. REFERENCED DOCUMENTS 5 2.1 Government documents 5 2.1.1 Specifications, standards and handbooks 5 2.2 Other publications 5

3. DEFINITIONS 5

4. GENERAL REQUIREMENTS 6 4.1 Test apparatus 6 4.1.1 Testing machine 6 4.1.2 Test fixtures 6 4.1.2.1 Test píate 6 4.1.2.2 Holding fixture 6

5. DETALL REQUIREMENTS 6 5.1 Test procedures 6

6. NOTES 8 6.1 Test report 8

FIGURES

Figure Sheet

la. Testfixture assembly and set-up 9 lb. Shear test fixture details 10 2a. Test fixture assembly 11 2b. Shear test fixture details 12 3a. Shear fixture assembly 13 3b. Shear test fixture details 14

SHEET 3 APPROVAL DATE AUGUST 1997

USE OF OR RELIANCE UPON TII1S DOCUMENT OR ANY AEROSPACE STANDARD IS ENTIRELY VOLUNTARY AIA DOES NOT QUALIFY SUPPLIERS OR CERTIFY CONFORMANCE OF ITEMS PRODUCED UNDER AEROSPACE STANDARDS . AIA MAKES NO REPRESENTATION OR CLAIM RESPECTING (I ) THE SUITABILITY OF ITEMS FOR ANY PARTICULAR APPLICATION OR (2) THE EXISTENCE OF OR APPLICABILITY THERETO OF PATENT OR TRADEMARK RIGHTS.


ALL RIGHTS RESERVED

NASM1312-20

TABLES

Table Sheet

I. Single shear load rates 7

SHEET 4 APPROVAL DATE AUGUST 1997 USE OF OR RELIANCE UPON THIS DOCUMENT OR ANY AEROSPACE STANDARD IS ENTIRELY VOLUNTARY AIA DOES NOT QUALIFY SUPPLIERS OR CERTIFY CONFORMANCE OF ITEMS PRODUCED UNDER AEROSPACE STANDARDS . AIA MAKES NO REPRESENTATION OR CLAIM RESPECTINO (1) THE SUITABILITY OF ITEMS FOR ANY PARTICULAR APPLICATION OR (2) TlIE EXISTENCE OF OR APPLICABILITY THERETO OF PATENT OR TRADEMARK RIGHTS.

NATIONAL AEROSPACE STANDARD CCOPYRIGHT 1997 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA, INC

ALL RIGHTS RESER VED

NASM1312-20

1. SCOPE 1.1 Applicability. This test method outlines the procedure and apparatus for testing fasteners in single shear.

1.2 While this method primarily is for testing fasteners that cannot be tested in double shear, if used for those fixture types and lengths amenable to double shear testing, the double shear test is considered the referee method.

2. REFERENCED DOCUMENTS

2.1 Government documents.

2.1.1 Specifications, standards and handbooks. Unless otherwise specified, the following specifications, standards and handbooks of the issue listed in the current Department of Defense Index of Specifications and Standards (DoDISS) and the supplement thereto (if applicable), form a part of this standard to the extent specified herein.

STANDARD

MILITARY

MIL-STD-45662 Calibration System Requirements

(Copies of specifications, standards, handbooks, drawings and publications required by contractors in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting officer.)

2.2 Other publications. The following document(s) forms a part of this specification to the extent specified herein. The issue of the documents which are indicated as DOD adopted shall be the issue in the current,DoDISS and the supplement thereto, if applicable.

AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)

ASTM E 4 Load Verification of Testing Machines

(Applications for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.)

3. DEFINITIONS Not applicable.

SHEET 5 APPROVAL DATE AUGUST 1997 USE OF OR RELIANCE UPON THIS DOCUMENT OR ANY AEROSPACE STANDARD IS ENTIRELY VOLUNTARY AIA DOES NOT QUALIFY SUPPLIERS OR CERTIFY CONFORMANCE OF ITEMS PRODUCED UNDER AEROSPACE STANDARDS , AIA MAKES NO REPRESENTATION OR CLAIM RESPECTINO (1) THE SUITABILITY OF ITEMS FOR ANY PARTICULAR APPLICATION OR (2) THE EX1STENCE OF OR APPLICABILITY THERETO OF PATENT OR TRADEMARK RIGIFTS.

NATIONAL AEROSPACE STANDARD OCOPYRIGIft 1997 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA. INC

ALL RIGI ETS RESERVED

NASM1312-20

4. GENERAL REQUIREMENTS

4.1 Test apparatus.

4.1.1 Testing machine. The testing machine shall be capable of applying a compressive load at a controllable rate. The machine shall conform to the requirements of MIL-STD-45662. Its accuracy shall be verified every six months by a method complying with ASTM E 4, using a calibration device which shall have been calibrated by the National Bureau of Standards not more than two years prior to its use. The loads of the fasteners tested shall be within the loading range of the testing machine as defined in ASTM E 4.

4.1.2 Test fixtures.

4.1.2.1 Test plate. The test plates shall be as shown in Figures 1, 2, 3 or equivalent. Plates must maintain the following essential properties:

a. The hole diameter for installation formed fasteners, shall be as specified in the product specification or (D + 0.001) + 0.002 - 0.000, where D is the maximum fastener shank diameter for cylindrical body fasteners.

b. The hole shall be perpendicular to the test plate within fifteen minutes of arc.

c. The hole shall be radiused at one end to provide clearance between fastener head and shank fillet.

d. The hole shall be chamfered or broken 0.005/0.010 in the shear plane.

e. Unless specified otherwise the width of the shear blade at the fastener contact area shall be 1/2 D + 0.010 - 0.000.

4.1.2.2 Holding fixture. The holding fixture shall be equivalent to Figures 1 tá or 3. Fixtures shall be capable of'providing shear loading while preventing rotation of the fastener. Shear loading shall remain perpendicular to the longitudinal axis of the fastener throughout the complete test.

5. DETALL REQUIREMENTS

5.1 Test procedures. The ultimate single shear strength shall be obtained as follows:

a. Fasteners shall be installed in the test plates in accordance with the recommendations

SHEET 6 APPROVAL DATE AUGUST 1997 USE OF OR RELIANCE UPON THIS DOCUMENT OR ANY AEROSPACE STANDARD IS ENTIRELY VOLUNTARY AIA DOES NOT QUALIFY SUPPLIERS OR CERTIFY CONFORMANCE OF ITEMS PRODUCED UNDER AEROSPACE STANDARDS . AIA MAKES NO REPRESENTATION OR CLAIM RESPECTING (I) TIIE SUITABILITY OF ITEMS FOR ANY PARTICULAR APPLICATION OR (2) THE EX1STENCE OF OR APPLICABILITY TITERETO OF PATENT OR TRADEMARK RIGIITS.

NATIONAL AEROSPACE STANDARD oCOPYRJGHT 1997 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA, INC

ALL RIGHTS RESERVED

NASM1312-20

of the manufacturer, using approved installation equipment. Unless specified otherwise, no preload shall be used, except where such preload is a necessary consequence of fastener installation.

b. The specimen shall be installed in the jig and placed between the compression heads of the testing machine. When hydraulic testing machines are used, care shall be exercised to locate the jig at the center of the piston. Caution should be exercised to prevent excessive preload. It is recommended that the preload nuts be torqued to 2 in./lbs maximum.

c. The test load is then applied at a uniform load rate as specified in Table I. The ultimate strength is determined by increased deformation of the specimen without increased load. Load rates for oversized fasteners (including blind bolts) shall be the same as for normal size fasteners of the corresponding nominal size. Load rates for larger or smaller size fasteners shall be calculated as 100,000 pounds per minute per square inch of nominal shear area. A tolerance of ±10 percent shall apply on the load rate. Nominal shear area is equal to the nominal shank area for load rate calculation only.

TABLE I. Single shear load rates.

Nominal fastener diameter

Load Rate lb/min

Nominal fastener diameter

Load Rate lb/min

0.125 1,240 0.563 24,800 0.156 1,920 0,625 39,600 0.164 2,100 0.750 44,000 0.190 2,800 0.875 60,000 0.250 5,000 1.000 78,000 0.313 7,700 1.125 100,000 0.375 11,000 1.250 122,000 0.438 15,000 1.375 148,000 0.500 19,600 1.500 176,000

The testing agency, at their option, may use a constant strain rate which will produce the specified load rate (±10 percent) in the elastic range. That is, the strain rate shall equal the load rate divided by the elastic modulus in shear.

SHEET 7 APPROVAL DATE AUGUST 1997

USE OF OR RELIANCE UPON THIS DOCUMENT OR ANY AEROSPACE STANDARD IS ENTIRELY VOLUNTARY AMA DOES NOT QUALIFY SUPPLIERS OR CERTIFY CONFORMANCE OF ITEMS PRODUCED UNDER AEROSPACE STANDARDS . A1A MAKES NO REPRESENTATION OR CLAIM RESPECTING (1) THE SUITABILITY OF ITEMS FOR ANY PARTICULAR APPLICATION OR (2) THE EXISTENCE OF OR APPLICA3ILITY THERETO OF PATENT OR TRADEMARK RIGHTS.

NATIONAL AEROSPACE STANDARD eCOPYRICIIIT 1997 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA, INC

ALL RIGHTS RESERVED

NASM1312-20

6. NOTES

6.1 Test report. The test report shall include the following data:

a. Fastener description.

1. Part number. 2. Lot identification. 3. Material. 4. Heat treat. 5. Grip length. 6. Measured fastener diameter.

b. Test machine.

1. Model and serial number. 2. Calibration date.

c. Ultimate load.

d. Test method (where options are available).

SHEET 8 APPROVAL DATE AUGUST 1997 USE OF OR RELIANCE UPON THIS DOCUMENT OR ANY AEROSPACE STANDARD 1S ENTIRELY VOLUNTARY AIA DOES NOT QUALIFY SUPPLIERS OR CERTIFY CONFORMANCE OF ITEMS PRODUCED UNDER AEROSPACE STANDARDS . AIA MAKES NO REPRESENTATION OR CLAIM RESPECTING (1) THE SUITABILITY OF ITEMS FOR ANY PARTICULAR APPLICATION OR (2) THE EX1STF,NCE OF OR APPLICABILITY THERETO OF PATENT OR TRADEMARK RIGHTS.

(16) 0.281 BALLS

0.250- 20 WING NUT

2- RE0'D

0.250-20 X 1.500 SOC.SET SCREWS 2 -REO'D

0.250 BALLS 12 -REO'D

0.375 DIA X 1" LONG FOR TEST FIXTURE DETAILS

DRILL ROD (R"C" 46 -4 8)

SEE FIGURE 3 b 12 - PCS

NATIONAL AEROSPACE STANDARD OCOPYRIGHT 1997 AEROSPACE INDUSTRIES ASSOCIATION OF AMER/CA, INC

ALL RIGHTS RESER VED

NASM1312-20

SHEAR FIXTURE ASSEMBLY

ADJUST TO EL IMINATE ANY COCKING OF TEST PLATES

SHEAR FIXTURE SET UP

FIGURE 1 a. Test fixture assembly and set-up.

SHEET 9 APPROVAL DATE AUGUST 1997 USE OF OR RELIANCE UPON THIS DOCUMENT OR ANY AEROSPACE STANDARD IS ENTIRELY VOLUNTARY AJA DOES NOT QUALIFY SUPPLIERS OR CERTIFY CONFORMANCE OF ITEMS PRODUCED UNDER AEROSPACE STANDARDS . AIA MAKES NO REPRESENTATION OR CLAIM RESPECTINO (I) THE SUITABILITY OF ITEMS FOR ANY PARTICULAR APPLICATION OR (2) THE EXISTENCE OF OR APPLICABILITY TIIERETO OF PATENT OR TRADEMARK RIGIITS.

1 1.375 1.750

0.125 --4.1 j 0.250

0.062

0.265 GRILL THRU C'SINK FOR *1 10-24 FLATHEAD SCREW 2 PLACES

0.500 -4•114- 0.015

0.290 -

r 0.0625

SECTION A - A

0.250 DRILL THRU 0.2901U DRILL 0.110 DEEP, 8 PLACES

r 0.750 REF

elt10-24 X 0.625 LONG

FLAT HEAD SOCKET CAP SCR . REWORK AS SHOWN 4 -REO . D.

0.281 DRILL

0.750

1.500 5.0-15u0ARE.1 0 1°-

0.187

4-

PLATE O B S GAGE STOCK 2-RE0'0

0.500

0.437

1.562

THESE SURFACES TO BE PARALLEL WITHIN 001

O BASE 2-RECI'D

OI ANGLE

41 10-24 TAP

0750 DEEP 2 PLACES

L625

0.375

1000

0.062 X 45° 1

0.250-20 TAP THRU

LETTER v.DRILL • 2

060!.0 03 DEEP 4-1500 6 VIOLES 4-1

I1-4- 0.015

0.375 RAD

0.500

2-REO'D 0.500 0.312 TYP.

0.25

O BUSHING DRILL ROO 4 REOUIRED

2 -441 O LEAF SPRING 11ARDENED SPRING STEEL 2-RE 0'0

0 . 187

NATIONAL AEROSPACE STANDARD OCOPYRIONT 1997 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA. INC

ALL KIOILTS KLSEKYED

NASM1312-20

FIGURE lb. Shear test fixture details.

SHEET 10 APPROVAL DATE AUGUST 1997 USE OF OR RELIANCE UPON TRIS DOCUMENT OR ANY AEROSPACE STANDARD IS ENTIRELY VOLUNTARY AIA DOES NOT QUALIFY SUPPLIERS OR CERTIFY CONFORMANCE OF ITEMS PRODUCED UNDER AEROSPACE STANDARDS . AIA MAKES NO REPRESENTATION OR CLAIM RESPECTING (1) THE SUITABILITY OF ITEMS FOR ANY PARTICULAR APPLICATION OR (2) THE EXISTENCE OF OR APPLICABIL1TY TI ERETO OF PATENT OR TRADEMARK RIOHTS.

+003 -.000 HOLE SIZE RANGE FROM OSOOTOI"DIA.

SHARP CORRER

L +.000 I -.002

Y A

ir. co=1 117, ' :11.1.■■ iá A

-/..." ADJUSTED TO REO'D GRIP LENGTH CSK AS REO '0 AND ADD WASHERS FOR GRIP LENGTHS OVER 1-0500 INCHES

O SHEAR 8 L ADE 2-RE0 . 1)

NATIONAL AEROSPACE STANDARD OCOPYRIGHT 1997 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA, INC

ALL RIGHTS RESERVED

NASM1312-20

FIGURE 2a. Test fixture assembly.

SHEET 11 APPROVAL DATE AUGUST 1997 USE OF OR RELIANCE UPON THIS DOCUMENT OR ANY AEROSPACE STANDARD IS ENTIRELY VOLUNTARY AU DOES NOT QUALIFY SUPPLIERS OR CERTIFY CONFORMANCE OF ITEMS PRODUCED UNDER AEROSPACE STANDARDS . AIA MAKES NO REPRESENTATION OR CLAIM RESPECTING (1) TIIE SUITABILITY OF ITEMS FOR ANY PARTICULAR APPLICATION OR (2) THE EXISTENCE OF OR APPL1CABILITY THERETO OF PATENT OR TRADEMARK RIOHTS.

4 812

2 757 5.055

1

-^1 .062 ! .001 OvE R RAIL Du

328..005 • -.00 ,

SEE 71 13 14 4-8 ra PL.AC15

.2Cli • 91 375

061(1 1.--3 750 ! HOLE5./

1,87

®RALL 13116066 2 REOuIRED >4671,57nueluR•L ANGLO

51,E A111..A.Df.PI ATE

2 REOWIRED 1.4ATL 6150, PC • 4 8

2ó9r

- .750 DEEP. 5/16 -18 uNe-28 257 ("F) DR,EL

T•P .525 DEEP. 2 1101E5 625 DEEP 2 801E5/

3/8.16 UNE -29 TAP 312 06111 78506E 6

)

.495 (. 251 02111 75 DEEP - -I E,K-

10.2.1 uNe•21 3 TAP i 1/II,

.625 DEEP, 2 601.55

213 l• 31 021(1

3500- -

15

174-28 UNE .213

2.750-61

20—.4 75.1.-

5.005

TAP THRu., 300

.125 5,4550:

151

75 I vo-

SECII.12.I08:-.; 00' 1" EeELAGLI

II .360-

1, 90 270 . 875- (1,0uTER aDJ0571.....51.1LT

005 I0O5 01111 ■_6 2 REOUIRED A■ ATI. 6150 Re 45.48

.625 .250 1.750 005 1. •.001 5125 D,A BALL

120•• 1 . 3500

750

2500-

75

4250 1687

t j 1.760

.1105 .3750 6811 4 1 7 DIA

. .

2 %11 T :1 rJ111-11.,... .031 45. ,y...;,1 2111, 00,c1

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12 REpOIRE0, 081(1 120

2.250

25

ki.125 ---2.25

,.)•DJI„:576211472(611 ueTl 6I50 0E005E0 Ac 45-48

250 .260 DIA 1101E


ALL R1GHTS RESERVED

NASM1312-20

FIGURE 2b. Shear test fixture details.

SHEET 12 APPROVAL DATE AUGUST 1997 USE OF OR RELIANCE UPON THIS DOCUMENT OR ANY AEROSPACE STANDARD IS ENTIRELY VOLUNTARY AIA DOES NOT QUALIFY SUPPLIERS OR CERTIFY CONFORMANCE OF ITEMS PRODUCED UNDER AEROSPACE STANDARDS . AJA MAKES NO REPRESENTATION OR CLAIM RESPECTING (I) THE SUITABILITY OF ITEMS FOR ANY PARTICULAR APPLICATION OR (2) THE EXISTENCE OF OR APPLICABILITY THERETO OF PATENT OR TRADEMARK RIGHTS.

.5-20 UNF-3A SOC HD CAP SCREW

.25 x L25 x 2.625 PAD COPPER OR ALUM

.5Brul 1.5 LG.

DOWEL PINS OPTIONAL


ALL RIGHTS RESERVED

NASM1312 -20

. t _ 1

r 4 ft V--,

L., ,-'--.., ■-■----51. 4 1 t

1 --f

..,\ ..V---

./ -

\.......9 1 I 41 14 4 t -v-,

\A 11111 II 1114

FIGURE 3a. Shear fixture assembly.

SHEET 13 APPROVAL DATE AUGUST 1997 USE OF OR RELIANCE UPON THIS DOCUMENT OR ANY AEROSPACE STANDARD 1S ENTIRELY VOLUNTARY AIA DOES NOT QUALIFY SUPPLIERS OR CERTIFY CONFORMANCE OF ITEMS PRODUCED UNDER AEROSPACE STANDARDS . AIA MAKES NO REPRESENTATION OR CLAIM RESPECTINO (1) THE SUITABILITY OF ITEMS FOR ANY PARTICULAR APPLICATION OR (2) THE EXISTENCE OF OR APPLICABILITY THERETO OF PATENT OR TRADEMARK RIGHTS.

.100 K 45 1 CHAPO

3 4_

NATIONAL AEROSPACE STANDARD *COPYRIGHT 1997 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA, INC

ALL RIGHTS RESERVED

NASM1312-20

.515 CR1LL THRU C'BORE FOR .500 SOC HD CAP SCREW -4 VIOLES

750

10.000

-11.415 p---- -3.46071 1.500 ...r-

.750 .500 1.500

m_,..1 . 1 -,--r- - I 1

...-1-1--

r'- 411 ,.. I I I I I I -1- I I I --f-

-.190

O BASE 1 HECUIRED

.1.

.500 0 TYP -A-r 14-.340

I I!

.400

1 R

t'45., / 1.500 -.020

(I• ti •L'1"--- IV 2.290

.5601 jf

1-17/.!- :,

- , -I 1 i IIN,_ ' ' --s' rrrmr . t

-- 7-5. 6.---.7 __,

.190 ___z ---- u-,;oHouiNEFs-

I.500 _2.7,0 ...

o BLADE SUPPORT -ALLOT STEEL 1 REOUIRED RC 39-40 .625

,..4 1.50 -.•-• ,..." PARALLEL 5 PERPENDICULAR

1 1.490

16/ ,16/ TO / OF HOLE WITHIN .0002. _v.-

-.--THESE SURF4CES MUST BE

....755 ...3.502 I:1 .745 3.498 • ---- MAY BE CSUNK TO SUIT

1 •)._

7

j -- • •• - •- 1

1.490 11E40 CCH/FiC, OR CSORE

355

1.510 .-1.- TO SUIT FASTENER LGTH. i VACUUM HEAT TREAT OR .1.....-_,_".,-- 45 ,.............. ____E HONE HE ATOT Sr ill ZE EA TA. F RT 1 mn

1Y1 DIA I OLE 4•°°1 030 x 45 ° f OvE

.006 MIN OH I.D . -.000 I CHAM

O SHEAR BLADÉ TOOL STEEL 1 SET REOuiREp .RC 60-62

771 16

-- 3.000 • 350 .500R

.500 1.000

-.500 REAM

gLINK 2 REOUIRED At.Loy STEEL RC 3e-40

.125-1

.625

.020R --*-1.7501-• .500'_ • R. TYP

- 1 500 /°°- 0111.90 /211.10T STEEL 1 REOUIRED RC 36 - 40

-.500 R 3 25

1125 /, 6 , 1; 1 1150 i/_51

i7

1.000 --500 0 TYP

- 20 UNF 39

. .750 OtEP,2 PLACES

O LINK SRACE- 8t.LOy STEEL 1 REOUIRED RC 36-40

f1.600 •350 r 16

y- 60° 1.000

500 REMA 2

¡H

OCES

1.500

_L

FIGURE 3b. Shear test fixture details.

SHEET 14 APPROVAL DATE AUGUST 1997 USE OF OR RELIANCE UPON THIS DOCUMENT OR ANY AEROSPACE STANDARD IS ENTIRELY VOLUNTARY AIA DOES NOT QUAL!FY SUPPLIERS OR CERTIFY CONFORMANCE OF ITEMS PRODUCED UNDER AEROSPACE STANDARDS . AIA MAKES NO REPRESENTATION OR CLAIM RESPECTING (1) THE SUITABILITY OF ITEMS FOR ANY PARTICULAR APPLICATION OR (2) THE EXISTENCE OF OR APPLICABILITY TI{ERETO OF PATENT OR TRADEMARK RIGHTS.

°copyright 1997 aerospace industries association of

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