Showing posts with label Spiral Point Tap. Show all posts
Showing posts with label Spiral Point Tap. Show all posts

Tuesday, August 14, 2012


Blueprint Special Taps
J.A.M. Taylor Tool Cambridge Ontario High Speed Steel Taps Dies and Remers Special and Standard

Special Taps can be manufactured in any quantity from one piece to hundreds. As prices for specials are based on the quantities ordered, please contact our order desk for a quotation of your needs. Standard industry assumes a 10% over/under shipment for specialty manufactured tools. If over/under shipments are not acceptable please advise us at time of quotation.
When ordering special taps the more information we have will enable us to determine the correct tool for your application. Below is a list of information required to accurately quote:

Ordering Special Taps -- Thread form, tap material, pitch diameter, nominal size -- lead of tap


Size and Pitch of Thread

Class of Fit or Gauge Tolerances

Right or Left Hand

Thread Form

Lead -- Single, Double etc.

Type of Material to be threaded --Grade, hardness and machining properties are all helpful

Type of hole to be threaded -- Thru or Blind, if blind advise amount of clearance at bottom of hole

Depth of hole to be threaded -- indicate any reach if applicable

Other features required-- keyways, threaded shanks, oil holes, stepped shanks, hex drives etc.

Coatings required -- TiN, CrN, TiCN, Nitride, Steam Oxide etc.

Will Machine or Fixture affect the length of tap(s)

Will tap pass through or back out

***Submit drawings or prints if possible***

Submit Completed Quote From to sales@taylortool.com Or FAX 519-658-6799

Wednesday, August 8, 2012

Standard System of Tap Marking --Thread Form Symbols -- Short Forms & Abbreviations

Standard System of Tap Marking

Thread Form Symbols


ACME-C Acme Thread- Centralizing

ACME-G Acme Thread - General Purpose
AMO American Standard Microscope Objective Thread

J.A.M TAYLOR TOOL M6 x 1.0 Metric D5 HSS GT 4 Flutes Taper Tap 8 -- Cambridge Ontario High Speed Steel Taps Dies and Remers Special and Standard
J.A.M TAYLOR TOOL M6 x 1.0 Metric D5 HSS GT 4 Flutes Taper Tap 8"
ANPT Aeronautical National Form Taper Pipe Thread (Ground thread tap marked NPT)
BA British Association Standard Thread
BSF British Standard Fine Thread
BSPP British Standard Pipe Parallel Thread
BSPT British Standard Pipe Taper Thread
BSW British Standard Whitworth Coarse Thread
M Metric Screw Thread Series
N American National 8, 12 and 16 Thread Series (8N, 12N, 16N)
N BUTT American Buttress Screw Thread
NC American National Coarse Thread
NEF American National Extra Fine Thread
NF American National Fine Thread
NGO National Gas Outlet Thread
NGT National Gas Taper Thread (see SGT)
NH American National Hose Coupling and Fire Hose Coupling Threads
NPS American National Pipe Straight Pipe Thread
NPSC American National Standard Straight Pipe Thread in Pipe Couplings (Tap marked NPS)
NPSF Dryseal American National Standard Fuel Internal Straight Pipe Thread
NPSH American National Standard Straight Pipe Thread for Hose Couplings
NPSI Dryseal American National Standard Intermediate Internal Straight Pipe Thread
NPSL American National Standard Straight Pipe Thread Loose Fitting Mechanical Joints with
Locknuts
NPSM American National Standard Straight Pipe Thread for Free-Fitting Mechanical Joints for
Fixtures (Tap marked NPS)
NPT American National Standard Taper Pipe Thread (See ANPT, NPTR)
NPTF Dryseal American National Standard Taper Pipe Thread
NPTR American National Standard Taper Pipe Thread for Railing Joints (Taps marked NPT)
NS American National Thread - Special


12 TAYLOR TOOL 1/4"-28 NF STI 3 Flutes GH-3 Bottom Hand Taps CANADA

PG Panzer Gewindeboher
PTF Dryseal SAE Short Taper Pipe Thread
SGT Special Gas Taper Thread
SPL-PTF Dryseal Special Taper Pipe Thread
STI Screw Thread Insert Threads for Helical Coil Wire Inserts
*UN Unified Constant Pitch Thread Series
*UNC Unified Coarse Thread Series
*UNF Unified Fine Thread Series
*UNEF Unified Extra Fine Thread Series
UNJ Unified Thread Series with a 0.15011P to 0.18042P. Controlled Roil Radius on External
Thread only.
UNJC or UNJF Unified Thread Coarse or Fine Series with a 0.15011P to 0.18042P Controlled Root Radius on External Thread only.
UNM Unified Miniature Thread Series
UNR Unified Constant Pitch Thread Series with a 0.108P to 0.144P Controlled Root Radius;
External Thread only
UNRC or UNRF Unified Constant Pitch Coarse or Fine Thread Series with a 0.108P to 0.144P Controlled
Root Radius; Ext. Thread only
*UNS Unified Thread Special
60º thread with Truncated Crest and Root. The theoretical "V" Form is usually flatted to
the user's specifications.
WHIT British Standard Whitworth Special Thread
For More Information Please Visit Our website: www.taylortool.com


Friday, June 22, 2012

PULLEY TAP DIMENSIONS • GROUND THREAD


PULLEY TAP DIMENSIONS • GROUND THREAD
(Ref. MCTI Table 310)




Nominal

Tap Dimensions - Inches

Fractional

Overall

Thread

Neck

Square

Length of Shank

Shank

Size of

Diameter

Length

Length

Length

Length

Close Tol. Section

Diameter

Sqaure

Inches

L

l

l1

l2

l4

d1

a

1/4  (.2500)

6 ,8

1.00

.38

.31

1.50

.2550

.191

5/16  (.3125)

6, 8

1.13

.38

.38

1.56

.3180

.238

3/8  (.3750)

6, 8, 10

1.25

.38

.44

1.63

.3810

.286

7/16  (.4375)

6, 8

1.44

.44

.50

1.69

.4440

.333

1/2  (.5000)

6, 8, 10, 12

1.66

.50

.56

1.69

.5070

.380

5/8  (.6250)

6, 8, 10, 12

1.81

.63

.69

2.00

.6330

.475

3/4  (.7500)

10, 12

2.00

.75

.75

2.25

.7590

.569

Tolerances

Element

Size Range

Direction

Tolerance

Overall Length - L

1/4 to 3/4 inc.

Plus or Minus

.063

Thread Length - l

1/4 to 3/4 inc.

Plus or Minus

.063

Neck Length - l1

1/4 to 3/4 inc.

See Note - 1

See Note - 1

Square Length - l2

1/4 to 3/4 inc.

Plus or Minus

.031

Length of Shank (close tol) - l4

1/4 to 3/4 inc.

See Note - 2

See Note - 2

Shank Diameter - d1

1/4 to 3/4 inc.

Minus

.0050

Square of Shank - a

1/4 to 1/2 inc.

Minus

.004

5/8 to 3/4 inc.

Minus

.006












Notes
  1. L1 (Neck Length); neck and its length is optional with manufacturer
  2. L4 (Length of Close Tolerance Shank) is minimum length which is held to eccentricity tolerances per Table 317.

General Notes
a)       These taps have an internal center in the thread end.
b)      These taps are made to the H3 limits shown in Table 327)
c)       For eccentricity tolerances of taps elements see table 317.
d)      d1 (Shank Diameter) is approximately the same as the maximum major diameter for that size.
e)       a1 (Size or Square) is equal to .75 X d1 to the nearest .001 inch.