# Push-button adjustable levers GN 303.2: lever length 30 to 78 mm, thread M4 to M10 and inch, stud length, stroke

> What are the dimensions of a GN 303.2 adjustable lever with a release push button: lever length, thread, stud length and hub dimensions?

- Category: Hardware › Knobs, handles & feet
- Kind: Standard part
- Basis: JW Winco's GN 303.2 table (printed in inches), mm converted
- Page: https://xemstudio.com/objects/push-button-clamping-levers-gn-303-2/ · JSON: https://xemstudio.com/api/geometry?object=push-button-clamping-levers-gn-303-2 · Plain text: https://xemstudio.com/objects/push-button-clamping-levers-gn-303-2/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); files CC BY 4.0 or their publisher's license
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

**Exact dimensions.** Every file is drawn at true size with no tolerance added. The holes and pins that meet another part are listed below under Mating features, with the fit each joint needs; open those by your process's clearance before making the part.

## Notes

- GN 303.2 is the adjustable lever of the GN 300 family with a push button: press the button to release the serrations instead of pulling the lever up. JW Winco's table (threaded stud, zinc-plated steel stud, PA push button, powder-coated black body) is printed in inches with the stud lengths l2 in inches; the lever lengths 1.18 / 1.77 / 2.48 / 3.07 in are the 30 / 45 / 63 / 78 mm levers, and l2 in the part numbers is in mm (shown here in mm). The millimetre figures in brackets are the printed inches × 25.4 (the sheet prints only two decimals, so they are good to about ±0.3 mm). Letters are JW Winco's: this sheet prints d2, d3, h1, h2, h3 and h4 (stroke); the GN 300 sheet prints d3, d4, h1 to h4 for the same lever sizes and the 45 mm lever has the same 10 / 13 mm pair under d2 / d3 here and d3 / d4 there (h1 differs: 26.5 mm with the button, 24.5 without), so the letters are not interchangeable.
- The push-button lever covers four lever sizes (30 to 78 mm), M4 to M10 and #10-32 to 1/2-13 threads; the 10-24 rows of the 30 mm lever and the 10-32 rows of the 30 mm lever have no entries on the sheet. The lever cannot be taken apart once assembled (JW Winco: for applications where the lever does not need to be disassembled).
- Numbers only: no outline of the lever and button is published as coordinates.

## Mating features (exact size; open press / slide / run / socket by your process clearance, leave designed and clamp as drawn)

| feature | exact | mates with | fit | files |
|---|---|---|---|---|
| stud thread d1 × l2 | M4 to M10 and #10-32 to 1/2-13, stud 10 to 80 mm | a tapped hole of the same thread; the stud is a plain cylinder at the nominal major diameter | designed | all |

## Sizes

| lever length l1, mm | thread d1 | stud lengths l2, mm | d2, in (mm) | d3, in (mm) | h1, in (mm) | h2, in (mm) | h3, in (mm) | h4 stroke, in (mm) |
|---|---|---|---|---|---|---|---|---|
| 30 | M4 | 12, 16, 20, 25, 32 | 0.39 (9.9) | 0.51 (13.0) | 1.04 (26.4) | 0.16 (4.1) | 1.22 (31.0) | 0.14 (3.6) |
| 30 | M5 | 12, 16, 20, 25, 32, 40, 50 | 0.39 (9.9) | 0.51 (13.0) | 1.04 (26.4) | 0.16 (4.1) | 1.22 (31.0) | 0.14 (3.6) |
| 30 | M6 | 12, 16, 20, 25, 32, 40, 50 | 0.39 (9.9) | 0.51 (13.0) | 1.04 (26.4) | 0.16 (4.1) | 1.22 (31.0) | 0.14 (3.6) |
| 45 | 10-32 | 10, 12, 16, 20, 25, 32 | 0.39 (9.9) | 0.51 (13.0) | 1.04 (26.4) | 0.16 (4.1) | 1.38 (35.1) | 0.14 (3.6) |
| 45 | 10-24 | 16, 20, 32 | 0.39 (9.9) | 0.51 (13.0) | 1.04 (26.4) | 0.16 (4.1) | 1.38 (35.1) | 0.14 (3.6) |
| 45 | 1/4-20 | 10, 12, 16, 20, 25, 32, 40, 45 | 0.39 (9.9) | 0.51 (13.0) | 1.04 (26.4) | 0.16 (4.1) | 1.38 (35.1) | 0.14 (3.6) |
| 45 | M4 | 12, 16, 20, 25, 32 | 0.39 (9.9) | 0.51 (13.0) | 1.04 (26.4) | 0.16 (4.1) | 1.38 (35.1) | 0.14 (3.6) |
| 45 | M5 | 12, 16, 20, 25, 32, 40, 50 | 0.39 (9.9) | 0.51 (13.0) | 1.04 (26.4) | 0.16 (4.1) | 1.38 (35.1) | 0.14 (3.6) |
| 45 | M6 | 12, 16, 20, 25, 32, 40, 50 | 0.39 (9.9) | 0.51 (13.0) | 1.04 (26.4) | 0.16 (4.1) | 1.38 (35.1) | 0.14 (3.6) |
| 63 | 1/4-20 | 16, 20, 25 | 0.53 (13.5) | 0.69 (17.5) | 1.28 (32.5) | 0.26 (6.6) | 1.77 (45.0) | 0.16 (4.1) |
| 63 | 5/16-18 | 12, 16, 20, 25, 32, 40, 45, 50, 63 | 0.53 (13.5) | 0.69 (17.5) | 1.28 (32.5) | 0.26 (6.6) | 1.77 (45.0) | 0.16 (4.1) |
| 63 | M6 | 16, 20, 25, 32, 40, 50, 63 | 0.53 (13.5) | 0.69 (17.5) | 1.28 (32.5) | 0.26 (6.6) | 1.77 (45.0) | 0.16 (4.1) |
| 63 | M8 | 16, 20, 25, 32, 40, 50, 63 | 0.53 (13.5) | 0.69 (17.5) | 1.28 (32.5) | 0.26 (6.6) | 1.77 (45.0) | 0.16 (4.1) |
| 78 | 3/8-16 | 16, 20, 25, 32, 40, 45, 50, 63 | 0.63 (16.0) | 0.83 (21.1) | 1.48 (37.6) | 0.31 (7.9) | 2.17 (55.1) | 0.16 (4.1) |
| 78 | 1/2-13 | 32, 40 | 0.63 (16.0) | 0.83 (21.1) | 1.48 (37.6) | 0.31 (7.9) | 2.17 (55.1) | 0.16 (4.1) |
| 78 | M8 | 20, 25, 32, 40, 50, 63, 80 | 0.63 (16.0) | 0.83 (21.1) | 1.48 (37.6) | 0.31 (7.9) | 2.17 (55.1) | 0.16 (4.1) |
| 78 | M10 | 20, 25, 32, 40, 50, 63, 80 | 0.63 (16.0) | 0.83 (21.1) | 1.48 (37.6) | 0.31 (7.9) | 2.17 (55.1) | 0.16 (4.1) |

## Where the files are

- JW Winco: [GN 303.2 adjustable levers with push button, threaded stud: l1, thread, l2, d2, d3, h1 to h4 (stroke)](https://www.jwwinco.mx/en-us/products/2.1-Clamping-assembly-onoff-switching-via-levers/Adjustable-hand-levers-tension-levers/GN-303.2-Zinc-Die-Cast-Adjustable-Levers-Threaded-Stud-Type-with-Zinc-Plated-Steel-Components-with-Push-Button) — web — Publisher's page; dimensions are facts

## Questions

**What is the difference between GN 300 and GN 303.2?**

Both are adjustable (ratchet) clamping levers with a threaded stud; GN 303.2 has a push button that releases the serrations instead of lifting the lever.

**What lever sizes does GN 303.2 come in?**

30, 45, 63 and 78 mm (1.18 / 1.77 / 2.48 / 3.07 in), threads M4 to M10 and #10-32 to 1/2-13.

**What is the stroke of a GN 303.2 lever?**

h4: .14 in (3.5 mm) on the 30 and 45 mm levers and .16 in (4 mm) on the 63 and 78 mm levers.

## Fits with

- [Adjustable clamping levers GN 300 (ratchet / tension levers): lever length 30 to 108 mm, thread M3 to M16 and inch, stud length, hub dimensions](https://xemstudio.com/objects/adjustable-clamping-levers-gn-300/)
- [Cam levers GN 927 (eccentric clamping levers): lever length 44 to 101 mm, thread M4 to M10, cam stroke, plate and setting-nut dimensions](https://xemstudio.com/objects/cam-levers-gn-927/)
- [Star knobs, DIN 6336 (cast iron), Ø32–80: thread, bore, height and depth](https://xemstudio.com/objects/star-knobs-din-6336/)
- [Fixed handles, DIN 39 (steel / plastic), Ø16–36: stud thread, pin diameter, length and hex key](https://xemstudio.com/objects/fixed-handles-din-39/)
- [Indexing plungers GN 617: pin diameter 5 to 10 mm, thread, A/F, lengths and spring load (steel and stainless)](https://xemstudio.com/objects/indexing-plungers-gn-617/)