Lead Screws, Stainless Steel Lead Screws, Teflon Coated Leadscsrews, Miniature Linear Actuators, Rotary Motion Conversion

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BUILDING PART NUMBERS - LEADSCREWS

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Leadscrews Main Page

Order Code Numbers, Nut Styles, Nut Components, Lubrication Options, Screw Diameters, Thread Configurations, Describing the End Forms, An Order Example

IDENTIFYING THE PRODUCT ORDER CODE NUMBERS

XXX

YYYY

ZZZ

Item: (T)
C = Standard
Compression Nut
W = Wedge
Compression Nut
T = Torsion Nut
N = Standard Freewheeling Nut

A = High Strength Freewheeling Nut
L = Leadscrew Only

Nut OD Style: (F)
F = Flanged
T = Threaded
X = Special
S = Leadscrew Only

Screw Finish: (S)
S = Uncoated Screw
T = Black Ice™ PTFE Coating
N = Nut Only (no screw ordered)

Screw Diameter: (XXX)

Nominal Diameter

inch

mm

Diam.
Code

1/8

3.2

013

9/64

3.6

014

3/16

4.8

018

7/32

5.6

021

1/4

6.4

025

3/8

9.5

037

5/8

15.9

062

SEE
THREAD CONFIGURATIONS BELOW

Unique Feature
Listing:
Z00 = Standard
Catalog Order

Other Leadscrew Assembly Orders:
Every customer's application is assigned a unique identifier that captures features such as screw length, end machining, lubrication, etc. Contact haydon for more options and information.

Notes:

Not all Thread Leads and Nuts ar available in all Screw Diameters
See following pages for available Nuts and Leads
New Nuts and leads are continually being added. Contact haybon for latest availability.

SELECTING THE NUT STYLE

XXX

YYYY

ZZZ

C = C STYLE COMPRESSION NUT

Screw Ø	Nut Ø	Nut Length (max)	Thread	Thread Length	Design Load Rating	Drag Torque
ØA	ØB	C	TH	D
3/16 - 1/4 in. (4.8 - 6.4 mm)	.625 in. (15.88 mm)	1.05 in. (26.61 mm)	9/16 - 18 (No Metric)	.240 in. (6.10 mm)	5 lbs. (2.27 kg)	4 oz-in. max. (2.8 N-cm) max.
3/8 in. (9.5 mm)	0.75 in. (19.05 mm)	1.32 in. (33.53 mm)	5/8 - 18 (No Metric)	.320 in. (8.13 mm)	10 lbs. (4.54 kg)	5 oz-in. max. (3.5 N-cm) max.

W = W STYLE WEDGE NUT

Screw Ø	Nut Ø	Nut Length (max)	Thread	Thread Length	Design Load Rating	Drag Torque
ØA	ØB	C	TH	D
3/16 - 1/4 in. (4.8 - 6.4 mm)	0.625 in. (15.88 mm)	1.05 in. (26.61 mm)	9/16 - 18 (No Metric)	.240 in. (6.10 mm)	10 lbs. (4.54 kg)	4 oz-in. max. (2.8 N-cm) max.
3/8 in. (9.5 mm)	0.75 in. (19.05 mm)	1.32 in. (33.53 mm)	5/8 - 18 (No Metric)	.320 in. (8.13 mm)	25 lbs. (11.34 kg)	5 oz-in. max. (3.5 N-cm) max.

T = T STYLE TORSION NUT
T Style Nut

Screw Ø	Nut Ø	Nut Length (max)	Thread	Thread Length	Design Load Rating	Drag Torque
ØA	ØB	C	TH	D
3/16 - 1/4 in. (4.8 - 6.4 mm)	0.625 in. (15.88 mm)	1.08 in. (27.43 mm)	9/16 - 18 (No Metric)	.240 in. (6.10 mm)	15 lbs. (6.80 kg)	.75 - 4 oz-in. Adjustable (0.53 - 2.82 N-cm)
3/8 in. (9.5 mm)	.80 in. (20.32 mm)	1.52 in. (38.61 mm)	5/8 - 18 (No Metric)	.320 in. (8.13 mm)	30 lbs. (13.61 kg)	.75 - 4 oz-in. Adjustable (0.53 - 2.82 N-cm)

N = FREEWHEELING STYLE

Screw Ø	Nut Ø	Nut Length (max)	Thread	Thread Length	Static Load Rating	Design Load Rating
ØA	ØB	C	TH	D
3/16 in. (4.8 mm)	0.625 in. (15.88 mm)	0.430 in. (10.92 mm)	9/16 - 18 (No Metric)	.240 in. (6.10 mm)	70 lbs. (32 kg)	35 lbs. (16 kg)
7/32 - 1/4 in. (5.6 - 6.4 mm)	0.625 in. (15.88 mm)	0.430 in. (10.92 mm)	9/16 - 18 UNF (No Metric)	.240 in. (6.10 mm)	100 lbs. (46 kg)	50 lbs. (23 kg)
3/8 in. (9.5 mm)	0.750 in. (19.05 mm)	.680 in. (17.27 mm)	5/8 - 18 (No Metric)	.320 in. (8.13 mm)	150 lbs. (68 kg)	75 lbs. (34 kg)

A = HIGH STRENGTH FREEWHEELING STYLE

High Strength Freewheeling Nut

Screw Ø	Flange Ø	Flange Thickness	Nut Body Ø	Overall Length (max.)	Bolt Hole Ø	Bolt Circle Ø	Design Load Rating
1/8 - 9/64 in. (3.2 - 3.6 mm)	.750 in. (19.05 mm)	.100 in. (2.54 mm)	.250 in. (6.35 mm)	.625 in (15.88 mm)	.125 in. (3.18 mm)	.500 in (12.7 mm)	25 lbs (11 kg)
3/16 in. (4.8 mm)	.750 in. (19.05 mm)	.125 in. (3.18 mm)	.313 in. (7.94 mm)	.375 in. (9.53 mm)	.125 in. (3.18 mm)	.500 in (12.7 mm)	50 lbs (23 kg)
7/32 - 1/4 in. (5.6 - 6.4 mm)	1.00 in. (25.4 mm)	.150 in. (3.81 mm)	.500 in. (12.7 mm)	.750 in. (19.05 mm)	.140 in. (3.56 mm)	.750 in. (19.05 mm)	75 lbs (34 kg)
3/8 in. (9.5 mm)	1.250 in. (31.75 mm)	.188 in. (4.76 mm)	.625 in. (15.88 mm)	1.00 in. (25.4 mm)	.140 in. (3.56 mm)	.875 in. (22.23 mm)	200 lbs (91 kg)
5/8 in. (15.9 mm)	2.250 in. (57.15 mm)	.500 in (12.70 mm)	1.125 in. (28.58 mm)	1.250 in. (31.75 mm)	.313 in. (7.94 mm)	1.750 in. (44.45 mm)	500 lbs (227 kg)

NOTE: The "A" style nut is only available with a mounting flange as a standard part. Please contact Haydon for details if a custom high strength freewheeling nut is required.

L = LEADSCREW ONLY (NO NUT ORDERED)

SELECTING NUT COMPONENTS

XXX

YYYY

ZZZ

F = FLANGE ADAPTER (optional)

Screw Ø	Bolt Hole Circle	Bolt Hole Ø	Flange Thickness	Pilot Length	Pilot Ø	Effective Ø	Mounting Thread
	ØA	ØB	C	D	ØE	ØF
3/16 - 1/4 in. (4.8 - 6.4 mm)	.875 in. (22.23 mm)	.143 in. (3.63 mm)	.160 in. (4.06 mm)	.08 in. (2.04 mm)	.625 in. (15.88 mm)	1.125 in. (28.58 mm)	9/16 - 18 (No Metric)
3/8 in. (9.5 mm)	1.125 in. (25.58 mm)	.200 in. (5.08 mm)	.200 in. (5.08 mm)	.12 in. (3.05 mm)	.750 in. (19.05 mm)	1.5 in. (38 mm)	5/8 - 18 (No Metric)

T = THREADED (When ordering a threaded nut without flange). Not available for "A" style nut as a standard part

X = CUSTOM

Custom designed nuts are available.
Haydon’s technical advisers
are available to assist you
in the development of
application-specific options.

S = LEADSCREW ONLY (no nut being ordered)

LUBRICATION OPTIONS

XXX

YYYY

ZZZ

S = GREASED SCREW

T = BLACK ICE
(PTFE Teflon® based proprietary “flake-free” coating)
Teflon® is a registered trademark of DuPont Corp.

N = NO SCREW
(order does not include leadscrew)

SCREW DIAMETERS

XXX

YYYY

ZZZ

Diameter Code	Nominal Screw Diameter
	Inch	mm
013	1/8	3.2
014	9/64	3.6
018	3/16	4.8
021	7/32	5.6
025	1/4	6.4
037	3/8	9.5
062	5/8	15.9

SELECTING LEADSCREW THREAD CONFIGURATIONS

XXX

YYYY

ZZZ

Blue shaded areas have been translated to equivalent metric values. The 1 mm and 5 mm Leads are true metric values

Diameter Code	Major Diameter inch mm		inch	mm Lead	Lead Code
013	1/8	3.2	0.0197	0.5	0020
			0.0394	1	0039
			0.0787	2	0079
			0.1575	4	0157
			0.3150	8	0315
014	9/64	3.6	0.012	0.305	0012
			0.024	0.610	0024
			0.048	1.219	0048
			0.096	2.438	0096
018	3/16	4.8	0.025	0.635	0025
			0.05	1.27	0050
			0.1	2.54	0100
			0.2	5.08	0200
			0.375	9.525	0375
			0.4	10.16	0400
021	7/32	5.6	0.024	0.610	0024
			0.048	1.219	0048
			0.0625	1.588	0063
			0.096	2.438	0096
			0.192	4.877	0192
			0.384	9.754	0384
025	1/4	6.4	0.025	0.635	0025
			0.03125	0.794	0031
			0.0394	1	0039
			0.05	1.27	0050
			0.0625	1.588	0063
			0.0787	2	0079
			0.1	2.54	0100
			0.125	3.175	0125
			0.1969	5	0197
			0.25	6.35	0250
			0.3937	10	0394
			0.5	12.7	0500
			0.75	19.05	0750
			1	25.4	1000
037	3/8	9.5	0.025	0.635	0025
			0.0394	1	0039
			0.0416	1.057	0042
			0.05	1.27	0050
			0.0625	1.588	0063
			0.0787	2	0079
			0.0832	2.113	0083
			0.1	2.54	0100
			0.125	3.175	0125
			0.166	4.232	0167
			0.1969	5	0197
			0.2	5.08	0200
			0.25	6.35	0250
			0.375	9.525	0375
			0.3937	10	0394
			0.4	10.16	0400
			0.5	12.7	0500
			0.75	19.05	0750
			1	25.4	1000
			1.2	30.48	1200
			1.25	31.75	1250
062	5/8	15.9	0.1	2.54	0100
			0.125	3.175	0125
			0.25	6.35	0250
			0.5	12.7	0500
			1	25.4	1000

DESCRIBING THE END FORM

XXX

YYYY

ZZZ

_ _ _ = END TREATMENT

The last three digits of the Haydon Leadscrew part number describe the end treatments that are incorporated into the leadscrew design (“Z00” for Nut Only designs). Haydon has the capabilities to provide a vast selection of end forms with our screws the more common of which is are shown on page 17. Please contact us to finalize your design by picking the end treatments that best serve your needs

Z00 = NUT ONLY

AN ORDER EXAMPLE

WFT – 037 – 0025ZZZ

The order number above indicates products ordered with the following characteristics:

• W Style Nut
• Standard Flange
• Black Ice™ Lubrication (coating) on leadscrew
• 3/8 diameter leadscrew
• .025 inch lead, single start, .025 (1.3° angle) pitch, .334 minor diameter Acme type thread
• ZZZ; code is used to note a customer-specific configuration.

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