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NASM33537 Datasheet Preview

NASM33537 Datasheet

INSERT / SCREW THREAD

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NATI.NALAER'SPA.ESTANDARD ffi
O COPYRIGHT 2013 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA, INC. ALL RIGHTS RESERVED NAnoNAt *cnospAc: sTAtrBARos
I TABLE OF CONTENTS
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6. DTMENSTONAL DATA
7. DEPTH OF RECOMMENDED MINIMUM TAP DRILL HOLE
8. DEPTH OF FULL THREAD OF TAPPED HO1E...........
3
...,...........3
..,......,.,,,,J a
9. LENGTH OF BOLT THREAD PRO]ECTION
A
10 COUNTERSINK AN D COUNTERBORE
4
11 INSTAI I ATTON OF TNSFRT
t2. BLrND HOLE ASSEMBLY (WITHOUT REMOVAL OF TANG)...
1? GACTNC PRAT-TI'F
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TABLES
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-TABLE II LENGTHS OF THREAD ENGAGEMENT IN TERMS OF NOMINAL THREAD SIZE.,.,.....,..
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@ covrerrElY REVISED
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Reproduced By IHS
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THE INITIAL RELEASE OF THIS DOCUMENT SUPERSEDES MS33537, REVISION E, AMENDMENT 1. PART NUMBERS REMAIN MS33537
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NATIONAL AEROSPACE STANDARDS COMMITTEE
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TITLE
INSERT, SCREW THREAD, HELTCAL COrL rNCH SERTES,
COARSE AND FINE THREAD, STANDARD ASSEMBLY
DIMENSIONS FOR
CLASSIFICATION
DESIGN STANDARD
NASM33s37
SHEET 1 OF 13
USE OF OR RELIANCE UPON THIS DOCUMENT OR ANY NANONAL AEROSPACE STANDARD IS ENTIRELY VOLUNTARY. AIA DOES NOT QUAUFY SUPPLIERS OR CERNFY
CONFORIYANCE OF ITEIVIS PRODUCED I.]NDER NATIONAL AEROSPACE STANDARDS. AIA MAKES NO REPRESENTATION OR CLAIM RESPECTING (1) THE SUITABILITY OF
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AIA

NASM33537 Datasheet Preview

NASM33537 Datasheet

INSERT / SCREW THREAD

No Preview Available !

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NATIONAL AEROSPACE STANDARD
@ COPYRIGHT 2013 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA, INC. ALL RIGHTS RESERVED
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2.
GENERAL INSTRUCTIONS
DESCRIPTION
Helical coil inserts are screw thread bushings coiled from diamond shaped cross-section wire. They are screwed into
tapped holes to form nominal size internal threads. InserLs are installed by torquing through a diametral tang which
is notched for tang removal.
MATERIAL
As specified on the drawing.
THREADS
Assembled insefts, Classes 28 and 38, are controlled by the tolerance range of the tapped hole into which insert is
fitted. Due to the radius on the crest of the inseft at the minor diameter, the assembled insert will accept external
threaded pafts which are threaded to ASBB79. The grip coil or coils of the screw locking insert are shaped to
provide a prevailing torque when the screw is installed in the assembled inseft.
TAPPED HOLE
600 Unified Internal thread form with the minimum major diameter based on a truncation to 0.125p.
Designation for taoped hole
The drawing note for the tapped hole, per table IV, that will accept the helical coil inseft shall be in accordance with
the following examples:
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EXAMPLE 1
,3125-24 UNF-3B HELICAL COIL
INSERT THD PER NASM33537
.67 MIN FULL THD DEPTH
For Blind Hole (Based on 2 Diameter
Engagement) (Minor Diameter Drill Depth
Tolerance approx. .060 or as otherwise
appropriate)
,3125.24 UNF-38 HELICAL COIL
INSERT THD THRU PER NASM33537 INSTALL
INSERT ,75-T,5 TURNS BELOW SURFACE
-REMOVE TANG (NOT REQUIRED WITH
TANGLESS INSERTS)
For thru hole with Insert being Assembled
(Based on 2 Diameter Engagement)
EMMPLE 2
MINOR DIA .3215-.3288 x .791-.851 DEEP
.36-.39 DIA x 115o-125o CSK
THD PER NASM33537 FOR
,3125-24 UNF-38 HELICAL COIL INSERT
.67 MIN FULL THD DEPTH
PITCH DIA ,3395-,3427
MA]OR DIA.3666 MIN
MINOR DIA .3215-.3288 THRU
.36-.39 DIA x 115o-125o CSK
THD THRU PER NASM33537 FOR
,3125-24 UNF-38 HELICAL COIL INSERT
PITCH DIA .3395-.3427
MAJOR DIA .3666 MIN
INSTALL INSERT ,75-T,5 TURNS
BELOW SURFACE
REMOVE TANG - (NOT REQUIRED WITH
TANGLESS INSERTS)
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: @do couer-rrElY REVTsED
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USE OF OR RELIANCE UPON THIS DOCUN4ENT OR ANY NATIONAL AEROSPACE STANDARD IS ENTIRELY VOLUNTARY. AIA DOES NOT QUALIFY SUPPLIERS OR CERTIFY
CoNFoRTYANCE OF ITEI4S PRODUCED UNDER NATTONAL AEROSPACE STANDARDS. ArA I4AKES NO REPRESENTATION OR CLAITY RESPECTTNG (1) THE SUTTABILITY OF


Part Number NASM33537
Description INSERT / SCREW THREAD
Maker AIA
Total Page 13 Pages
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