5/8" - 8 Single Lead Stub Acme
5/8" - 8 Single Lead Stub Acme
This 5/8 - 8 stub acme machine screw is available in stainless steel with a corresponding aluminum bronze nut. Choose from RH threads or LH threads.
| MACHINE SCREW SPECIFICATIONS | RH | LH |
|---|---|---|
| STAINLESS STEEL SCREW PART NO. | SS 063 R 013 S | SS 063 L 013 S |
| THREAD FORM | STUB ACME | |
| SCREW DIAMETER - TURNS / INCH | 5/8 - 8 | |
| PITCH / LEAD | 0.125 IN. | |
| ROOT DIAMETER | 0.507 IN. | |
| SCREW WEIGHT (LB. /FT.) | 0.85 | |
| TORQUE TO RAISE 1 POUND | 0.058 IN.-LB. | |
| MAXIMUM SCREW LENGTH | 12 feet | |
Nut and Flange Specifications
| NUT SPECIFICATIONS | RH | LH |
|---|---|---|
| NUT PART NO. | SN 063 R 013 B | SN 063 L 013 B |
| FLANGED NUT PART NO | SF 063 R 013 | SF 063 L 013 |
| DYNAMIC LOAD CAPACITY (LBS) | 1,953 | |
| STATIC LOAD CAPACITY (LBS) | 6,250 | |
| EFFICIENCY | 35.0 % | |
| MATERIAL | BRONZE | |
| NOMINAL DIAMETER "A" | 1.12 IN. | |
| NUT LENGTH "B" | 1.00 IN. | |
| THREAD LENGTH "C" | 0.50 IN. | |
| THREAD SIZE | 0.937-16 UN | |
| FLANGE PART NO. | FL-0937 | |
| FLANGE DIAMETER "D" | 2.60 IN. | |
| FLANGE THICKNESS "E" | 0.53 IN. | |
| FLANGE HOLE DIAMETER "F" | 0.266 IN. | |
| NUMBER OF HOLES IN FLANGE "G" | 4 | |
| FLANGE BOLT CIRCLE "H" | 2.090 IN. | |
| FLANGE MATERIAL | BLACK OXIDE COATED STEEL | |
Click on Product Specifications below to view Bearing Block and Screw End Conditions options available for this screw.
2D/3D Drawings
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Product Media
- Stainless steel screw
- Aluminum bronze nut
- Steel flange with black oxide coating
Sample Part Number:
Click on the part number to reveal additional information about the screw design and shaft codes.
Model Number
Thread Form
A: Acme
S: Stub Acme
Component
A: Assembly
S: Screw - without ball nut or bearing mounts
Screw Diameter - Thread direction - TPI (English)
| Dia/TPI | Code |
|---|---|
| 1/2 – 8 | 050 R 013 (Stub Acme) |
| 5/8 – 8 * | 063 R 013 (Stub Acme) |
| 5/8 – 4 * | 063 R 025 (Stub Acme) |
| 5/8 – 2 | 063 R 050 (Stub Acme) |
| 3/4 – 5 * | 075 R 013 |
| 7/8 – 2 * | 088 R 050 |
| 1 –10 | 100 R 010 |
| 1 – 4 * | 100 R 025 |
| 1 – 2 | 100 R 050 |
| 1 – 1 | 100 R 100 (Stub Acme) |
| 1 1/4 – 4 | 125 R 025 |
| 1 1/2 – 4 | 150 R 025 |
| 1 1/2 – 2 2/3 | 150 R 038 |
| 1 1/2 – 2 2/3 * | 150 R 038 (Stub Acme) |
| 1 1/2 – 2 | 150 R 050 |
| 2 – 4 | 200 R 025 |
| 2 – 2 * | 200 R 050 |
| 2 1/4 – 4 * | 225 R 025 |
| 2 1/4 – 2 * | 225 R 050 |
| 2 1/2 – 4 | 250 R 025 |
| 2 1/2 – 2 * | 250 R 050 |
| 3 3/8 – 1 1/2 | 338 R 067 (Stub Acme) |
| 3 1/2 – 1 1/2 | 350 R 067 |
| 3 3/4 – 1 1/2 | 375 R 067 |
| 4 1/2 – 1 1/2 | 450 R 067 |
| 5 – 1 1/2 | 500 R 067 |
| 6 – 1 1/3 | 600 R 075 |
R – Right-hand – all thread diameters/leads are available with right hand threads
L – Left-hand *- Substitute an ”L” in the part number for left hand leads
Stub Acme screws offer a larger root diameter than their Acme counterparts
*Available in stainless steel
Screw Material
A: Alloy Steel
S: Stainless Steel
Note: not all threads or materials are available for all sizes
First End of Screw
(Flange or threaded end of nut always faces second end)
| Bearing Mount Options | Machining Options (choose one that corresponds to the bearing block) |
|---|---|
| SB - Simple Single* | 1N – Threaded shaft only |
| DB - Simple Double | 2K – Thd Shaft w Kwy, 2L – Thd Shaft no Kwy, 2N – Threaded shaft only |
| FB - Fixed Double | 3K – Thd Shaft w Kwy, 3L – Thd Shaft no Kwy, 3N – Threaded shaft only |
| XX - No Bearing | 4K – Shaft w Keyway, 4L – Shaft no Keyway, 4N – Support only, XX – No Machining |
(When selecting ”XX – No Bearing”, choose from mounting options 1K through 4N or XX, above)
* All Simple Single bearing mounts are designed for radial loads only
Second End of Screw
(Flange or threaded end of nut always faces away from second end)
| Bearing Mount Options | Machining Options (choose one that corresponds to the bearing block) |
|---|---|
| SB - Simple Single* | 1N – Threaded shaft only |
| DB - Simple Double | 2K – Thd Shaft w Kwy, 2L – Thd Shaft no Kwy, 2N – Threaded shaft only |
| FB - Fixed Double | 3K – Thd Shaft w Kwy, 3L – Thd Shaft no Kwy, 3N – Threaded shaft only |
| XX - No Bearing | 4K – Shaft w Keyway, 4L – Shaft no Keyway, 4N – Support only, XX – No Machining |
(When selecting ”XX – No Bearing”, choose from mounting options 1K through 4N or XX, above)
* All Simple Single bearing mounts are designed for radial loads only
Nut Properties
B - Bronze
X - Do Not Include Nut in Assembly
Other Options
F - Include Flange
X - Do Not Include a Flange
Screw Length 000.00"
Enter value in inches with decimal if needed
Note that available screw length varies among screw sizes.
SB Screw End Conditions
| Screw Number | Bearing Mount No. | o S1 | A1 | A2 | A3 | A4 | A5 | A6 | o A7 | A8 | A9 | A10 | A11 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SS063R013S | SB-10 | 0.3940 | 0.650 | 0.330 | 0.44 | 0.127 | 0.354 | 0.800 | 1.00 | .391-32 UNS | W-00 | N-00 | 6200 |
| SS063R025S | 0.3936 | 0.125 | |||||||||||
| SS063R050A |
DB Screw End Conditions
| Screw Number | Bearing Mount No. | oS1 | oS2 | A1 | A2 | A3 | A4 | A5 | A6 | A7 | A8 | A9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SS063R013S | DB-10 | 0.3940 | 0.312 | 2.84 | 2.09 | 1.700 | 0.354 | 0.000 | .391-32 UNS | W-00 | N-00 | 1/8 x 1/2 |
| SS063R025S | 0.3936 | 0.311 | ||||||||||
| SS063R050A |
FB Screw End Conditions
| Screw Number | Bearing Mount No. | oS1 | oS2 | A1 | A2 | A3 | A4 | A5 | A6 | A7 | A8 | A9 | A10 | A11 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SS063R013S | FB-10 | 0.3940 | 0.312 | 3.50 | 2.75 | 2.25 | 1.515 | 0.354 | 0.825 | 0.050 | .391-32 UNS | W-00 | N-00 | 1/8 x 1/2 |
| SS063R025S | 0.3936 | 0.311 | ||||||||||||
| SS063R050A | |