1/4 x 1/2 Allen Grub Screw (Inch) (High Tensile) - 10 Nos
₹23.73 (excl. GST)
- SKU:
- FHT-SCREWSOC-GRBIN1/4X1/2
- Brand:
- Fastdep
- Category:
- 1/4 Allen Grub Screw (Inch)
- Qty / Pack:
- 10 per pack
- 🟢 In Stock:
- 99 Packs
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Product Details #
1/4" inch-series headless set screws with cup point per ASME B18.3 and internal hex drive in alloy steel Rc 45-53. UNC threads for shaft locking in US-specification equipment at 1/4-inch diameter.
Specification #
| Standard | ASME B18.3 |
| Material | Alloy Steel |
| Thread | UNC (Coarse) |
| Grade | 12.9 |
| Coating | Black oxide |
| Head Type | Headless (no head) |
| Drive Type | Hexagon socket (Allen key/hex wrench) |
| Point Type | Cup point (concave depression) |
Dimension #
| Size | Thread Dia (d) | Pitch (TPI) | Length(L) | Thread Length (b) |
|---|---|---|---|---|
| 3/16 | 0.1887-0.1900 | 24 | 3/16" - 1" | Full |
| 1/4 | 0.2489-0.2500 | 20 | 1/4" - 1 | Full |
| 5/16 | 0.3113-0.3125 | 18 | 5/16" - 1 1/2" | Full |
| 3/8 | 0.3737-0.3750 | 16 | 3/8" - 1 1/2" | Full |
| 1/2 | 0.4985-0.5000 | 13 | 1/2" - 1 1/2" | Full |
| 5/8 | 0.6232-0.6250 | 11 | 5/8" - 1 1/2" | Full |
- All dimensions in inches, tolerance +/- 0.001 in. Additional dimensions available on request.
Benefits #
Inch-series grub screws at 1/4-inch address shaft-locking requirements in US-specification machinery and legacy equipment. The cup point produces a controlled indentation on the shaft surface, providing a mechanical lock against rotational slip and axial movement. The headless design installs entirely within the threaded bore, eliminating protrusions in tight assemblies. Alloy steel hardness Rc 45-53 ensures effective indentation across common shaft materials. ASME B18.3 provides documented seating torque values for predictable installation.
Common Applications #
Common applications for 1/4" inch-series grub screws include:
- Small instrument shaft locking (imperial)
- Electrical terminal connections
- Light-duty US-spec coupling assembly
- Precision instrument adjustment locking
- Small knob and handle attachment
The product images are for illustration purposes only. Actual products may vary by part number, size, model, color, etc. Customers unfamiliar with the products are encouraged to contact our support team for exact images, if available. This product comes with a warranty against manufacturing defects; refer to the warranty policy for claim instructions. id/333, /product/allen-grub-screw-inch-1-4x1-2.md, /catalog/1-4-allen-grub-screw-inch.md,
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