Draper Tools 82631, 21744, 21723, 21721, 21715 Instructions

Original Instructions

Version 1 – February 2022

EN

METRIC THREAD
REPAIR KIT

21714, 21715, 21721, 8263 1, 21723, 21744, 03711

Stock No. Part No. Tap size

21714 DHCK-A M5 x 0.8mm 5.2 2 20
21715 DHCK-A M6 x 1.0mm 6.2 2 20
21721 DHCK-A M8 x 1.25mm 8.3 2 20
82631 DHCK-A M9 x 1.25mm 9.3 2 20
21723 DHCK-A M10 x 1.5mm 10.3 2 10
21744 DHCK-A M12 x 1.75mm 12.4 2 10
03711 DHCK-A M14 x 1.25mm 14.3 2 10

Drill bit size
(mm)

1. Health and Safety

•  Inspect t he product thoroughly for

•  ALWAYS wear eye protection.

(C)

(E)

A. 1 x HSS drill bit
B. 1 x HSS

tapping tool
C. 1 x Hex key
D. 1 x Insert tool

Read this manual in full before attempting to use this product and retain it for later use.
Always use the latest version of the manual.

(B)

(A)

E. 1 x Lug

breaking tool
F. Thread inserts
G. 1 x Case

• This manual is supplied as a guide only.

(G)

(F)

(D)

•  Keep the work area clean and well lit,

• Secure the workpiece during operation.

WARNING! This product requires the use of
additional tools (not supplied). Read and
adhere to all Health and Safety information
and operating instructions associated with
the chosen tools before use.

Hex key size
(mm)

Thread inserts
included

Information

damage before every use; DO NOT use it if
it is damaged.

− Assess any other precautions that
must be taken before use with each

specic workpiece.

 − Where the workpiece is par t of a larger

tool or machine, refer to the
manufacturer’s manual for the correct
procedure for use.

with bystanders at a safe distance.

2. Operating Instructions

1. Drill out the damaged thread using the
appropriate drill bit (A) (supplied) – Fig. 1.

Important: Some xings may need to be

removed by a specialist engineer. Draper
Tools accepts no responsibility for the

incorrect removal of broken xings and

fasteners.

2. Use a thread gauge (not supplied) to
ensure that the thread and pitch of the
new fastener are compatible with the
thread insert (F) – Fig. 2.

3. Fix the tapping tool (B) into a tap wrench
(not supplied) and cut a new thread into
the cleared hole – Fig. 3.
Important: Use of an appropriate cutting
oil is recommended. Clear the tapping
tool of chips after use.

4. Use the adjustable ring of the insert tool
(D) to set the depth at which the thread
insert will be positioned and use the hex
key (C) to lock it in place – Fig. 4.
Important: When inserted, the thread
insert should be positioned roughly a
half-turn below the surface.

5. With the thread insert tang positioned at
the bottom, push the insert tool through
the top of the thread insert and locate the
tang in the tang slot.

6. With the insert tool at the correct angle,
wind the thread insert into the hole using
light downward pressure until the set
depth is reached and then remove the
insert tool – Fig. 5.
CAUTION! DO NOT work against the
direction of the thread as this may
damage the insert tang.

7. Position the lug breaking tool (E) above
the insert thread tang and strike it to
break the tang – Fig. 6.

3. Care and Disposal

•  Clean all par ts of the product before and
after each use, and before storing.

•  Do not use damaged or defecti ve tools
with this product.

•  Store the product in a clean and dry
location, out of reach of children.

At the end of its working life, or when it can
no longer be repaired, dispose of this product
according to local regulations.

Wear eye and face protection

Copyright © Draper Tools Limited

Fig. 1

Fig. 4

Helpline: [phone] Sales Desk: [phone]

General Enquiries: [phone] Website: drapertools.com

Draper Tools Limited, Hursley Road, Chandler’s Ford, Eastleigh, Hampshire, SO53 1YF, UK

Fig. 2

Fig. 5

Email: [e-mail]

Fig. 3

Fig. 6