











Rs. 13.38 / piece · 100 pcs
Key specs
| Size × Length | 10 pcs | 25 pcs | 50 pcs | 75 pcs | 100 pcs |
|---|---|---|---|---|---|
| M4 × 6mm | 10 pcs
Rs. 73 Rs. 7.30/pc | 25 pcs
Rs. 112 Rs. 4.48/pc | 50 pcs
Rs. 177 Rs. 3.54/pc | 75 pcs
Rs. 243 Rs. 3.24/pc | 100 pcs
Rs. 308 Rs. 3.08/pc |
| M4 × 8mm | 10 pcs
Rs. 73 Rs. 7.30/pc | 25 pcs
Rs. 112 Rs. 4.48/pc | 50 pcs
Rs. 177 Rs. 3.54/pc | 75 pcs
Rs. 243 Rs. 3.24/pc | 100 pcs
Rs. 308 Rs. 3.08/pc |
| M4 × 10mm | 10 pcs
Rs. 74 Rs. 7.40/pc | 25 pcs
Rs. 116 Rs. 4.64/pc | 50 pcs
Rs. 186 Rs. 3.72/pc | 75 pcs
Rs. 255 Rs. 3.40/pc | 100 pcs
Rs. 324 Rs. 3.24/pc |
| M4 × 12mm | 10 pcs
Rs. 74 Rs. 7.40/pc | 25 pcs
Rs. 116 Rs. 4.64/pc | 50 pcs
Rs. 186 Rs. 3.72/pc | 75 pcs
Rs. 255 Rs. 3.40/pc | 100 pcs
Rs. 324 Rs. 3.24/pc |
| M4 × 15mm | 10 pcs
Rs. 76 Rs. 7.60/pc | 25 pcs
Rs. 121 Rs. 4.84/pc | 50 pcs
Rs. 195 Rs. 3.90/pc | 75 pcs
Rs. 270 Rs. 3.60/pc | 100 pcs
Rs. 344 Rs. 3.44/pc |
| M4 × 20mm | 10 pcs
Rs. 78 Rs. 7.80/pc | 25 pcs
Rs. 125 Rs. 5.00/pc | 50 pcs
Rs. 203 Rs. 4.06/pc | 75 pcs
Rs. 282 Rs. 3.76/pc | 100 pcs
Rs. 360 Rs. 3.60/pc |
| M4 × 25mm | 10 pcs
Rs. 83 Rs. 8.30/pc | 25 pcs
Rs. 139 Rs. 5.56/pc | 50 pcs
Rs. 230 Rs. 4.60/pc | 75 pcs
Rs. 322 Rs. 4.29/pc | 100 pcs
Rs. 414 Rs. 4.14/pc |
| M4 × 30mm | 10 pcs
Rs. 90 Rs. 9.00/pc | 25 pcs
Rs. 154 Rs. 6.16/pc | 50 pcs
Rs. 261 Rs. 5.22/pc | 75 pcs
Rs. 368 Rs. 4.90/pc | 100 pcs
Rs. 475 Rs. 4.75/pc |
| M4 × 35mm | 10 pcs
Rs. 148 Rs. 14.80/pc | 25 pcs
Rs. 301 Rs. 12.04/pc | 50 pcs
Rs. 555 Rs. 11.10/pc | 75 pcs
Rs. 810 Rs. 10.80/pc | 100 pcs
Rs. 1,064 Rs. 10.64/pc |
| M4 × 40mm | 10 pcs
Rs. 156 Rs. 15.60/pc | 25 pcs
Rs. 319 Rs. 12.76/pc | 50 pcs
Rs. 591 Rs. 11.82/pc | 75 pcs
Rs. 864 Rs. 11.52/pc | 100 pcs
Rs. 1,136 Rs. 11.36/pc |
| M4 × 45mm | 10 pcs
Rs. 156 Rs. 15.60/pc | 25 pcs
Rs. 319 Rs. 12.76/pc | 50 pcs
Rs. 591 Rs. 11.82/pc | 75 pcs
Rs. 864 Rs. 11.52/pc | 100 pcs
Rs. 1,136 Rs. 11.36/pc |
| M4 × 50mm | 10 pcs
Rs. 176 Rs. 17.60/pc | 25 pcs
Rs. 370 Rs. 14.80/pc | 50 pcs
Rs. 692 Rs. 13.84/pc | 75 pcs
Rs. 1,015 Rs. 13.53/pc | 100 pcs
Rs. 1,338 Rs. 13.38/pc |
Green = lowest price per piece for that size. Type quantities in any boxes, then add them all at once.
| Size | M4 |
|---|---|
| Length | 50mm |
| Pitch | 0.7 mm (coarse) |
| Thread | Fully Threaded |
| Standard | DIN 7991 |
| Head | Socket |
|---|---|
| Drive | Allen |
| Point | Round Point |
| Country of origin | India |
|---|---|
| Marketed by | RPI SHOP |
| Material | High Tensile Steel |
|---|---|
| Grade | 10.9 |
| Finish | Blackened and coated with Rust Preventive Oil. |
| Colour | Black |
| Pack | 100 pcs |
|---|---|
| In the pack | 100Pcs of allen CSK screws |
| Not included | Nuts and Washers Aren't included with screws |
| Packaging weight | 450gms |
| Recommended uses | Commercial / Residential |
|---|
Deep accurate socket for high torque wrenching. Knurls for easier handling. Marked for easier identification. Head with increased bearing area for greater loading carrying capacity. Precision forged for symmetrical grain flow maximum strength. Elliptical fillet doubles fatigue life at critical head-shank juncture. “3-r” (radiused-root runout) increases fatigue life in this critical head-shank juncture. Controlled heat treatment produces maximum strength without brittleness. Accurate control of socket depth gives more wrench engagement permits full tightening without cracking or reaming the socket yet provides ample metal in the crucial fillet area for maximum head strength. Contour-following lines provide extra shear strength and provide high fatigue resistance.
The Allen CSK screw at RPI Shop offers a flush fastening solution with a countersunk design, making it ideal for applications where a smooth, clean finish is required. Whether you're working on mechanical, automotive, or construction projects, these screws provide superior strength and precision. The hexagonal drive of the Allen CSK screw ensures easy installation and secure fastening, minimizing the risk of stripping. Available in various sizes, these screws are perfect for projects requiring both strength and aesthetics. Trust RPI Shop to supply you with premium Allen CSK screws that are built to last.
Delivery within India takes 2-5 days. It is free on orders of Rs 500 and above; below that it costs Rs 69. Orders are processed and dispatched within 1-2 business days after payment; weekend and holiday orders are processed the next business day. We also ship to 28 countries, including UAE, UK, USA and Australia, at a flat Rs 1,700 per order.
Online payments go through Razorpay secure checkout. Cash on Delivery is available on orders above Rs 99; a COD fee of Rs 49 per order applies.
All prices on the site include GST. Enter your GSTIN at checkout and your invoice is issued with it.
Open "All Sizes & Prices" on the product page, type a quantity against each size and press "Add selected to cart"; all sizes go to the cart in one step.
Fasteners are sold in packs; the pack quantity is in the size name and in the Pack row of Specifications. Most screw packs are 10, 25, 50, 75 or 100 pieces. Heat shrink, sleeving and wire are sold per metre. The price per piece or metre is shown under the price, on product cards and in the size grid, where the green cell is the cheapest per piece.
All metric threads are ISO coarse; the pitch for each size is in the Key specs box and the Specifications tab. Screws marked 12.9, 10.9 or 8.8 are High Tensile Steel of that property class. All stainless steel items are grade 304.
Manufacturing defect: refund within 7 days of delivery, after verification. Wrong item delivered: full refund; the return is arranged by us. Wrong size ordered: we offer a replacement; you pay the additional shipping for it. Email ask@rpishop.in with your order number and invoice number. Returned items must be in their original packaging and condition. Refunds go to the original payment method and are processed every Tuesday and Friday.
A tracking link is sent by email and SMS when your order ships. Most orders ship by Delhivery. If you have an account, your orders are listed under My orders.
Yes. For a quote, message us on the WhatsApp chat button or email ask@rpishop.in. B2B orders get a GST invoice with your GSTIN. Phone support: 9979944992, 10:00 AM to 5:00 PM IST.