STANLEY 1-88-743 21 mm 6-Point Standard Socket in Roorkee

Order STANLEY 1-88-743 in Roorkee — Four-Piece Pack, GST and Price

Model: 1-88-743. Fastener size: 21 mm metric. Drive: ½-inch square. Profile: six-point (hexagonal). Indus MegaMart selling unit: one pack of four identical 21 mm sockets. This is not an assorted four-size set; no ratchet, breaker bar, extension or torque wrench is included in the listed socket pack.
Check the current four-piece pack price and buy STANLEY 1-88-743

STANLEY 1-88-743 Product Specifications

STANLEY lists the above standards for the exact model; this does not mean a separate certificate or calibration report is automatically supplied. The published 38 mm overall length is not a statement of the socket's usable internal depth. Where a nut sits inside an enclosed recess, check both the socket's outer clearance and its ability to reach the fastener before buying.

Does 21 mm describe the socket drive or the nut size?

21 mm describes the hexagonal fastener opening, measured between opposite flats of a correctly sized nut or bolt head. ½ inch describes the square drive into which a compatible manual ratchet or other hand tool fits. A 21 mm socket with a ⅜-inch drive and a 21 mm socket with a ½-inch drive serve the same fastener size but connect to different tool interfaces. Verify both dimensions against the job.

What does the six-point Maxi-Drive design do?

The six-point profile engages a matching hexagonal head. STANLEY describes its Maxi-Drive system as helping reduce the chance of fastener rounding during proper use. The benefit depends on correct fit, full seating and alignment; it does not make a damaged or incorrectly sized fastener safe to turn. A 12-point socket may offer additional angular indexing positions, but this part number is specifically a six-point tool.

Fit and Access Checks Before Choosing the 21 mm Socket

First, measure the nut or bolt head across flats. Do not assume that an M-series thread designation automatically requires a 21 mm socket: thread diameter and head width are different specifications. On a component where a 21 mm size is expected—such as a particular vehicle or machinery fastener—verify the fitted hardware rather than relying on a generic vehicle or equipment description.
Second, check working clearance. This model is a standard-length socket. The 38 mm overall length helps estimate outside access, but it does not establish how far a protruding threaded stud can enter. A deeply recessed nut or a long-exposed stud may need a suitable deep socket instead. The drawing's D1 value can help assess outer clearance only after confirming the dimension reference.
Third, check the driver and method of use. STANLEY specifies manual use, so operate the socket with a correctly fitting ½-inch-drive hand ratchet, breaker bar or hand-operated torque wrench as appropriate. It is not verified as an impact socket, and it should not be used on a powered impact wrench. For joints with a specified final torque, the socket can transmit force from an appropriate calibrated hand torque wrench, but it does not measure or regulate torque itself. Follow the fastener and equipment manufacturer's instructions.

When should you select a deep or impact-rated alternative?

Choose a deep socket if a standard socket cannot fully seat around a long stud or recessed nut. Choose an expressly impact-rated socket for powered impact work. A standard manual socket, a deep manual socket and an impact-rated socket are separate product choices even if all three are marked 21 mm. Avoid forcing an adjacent metric or imperial socket onto the fastener.

Practical Uses and Four-Piece Workshop Procurement

STANLEY 1-88-743 suits mechanical assembly, general workshop maintenance, equipment servicing and vehicle repair when the actual component uses a 21 mm six-sided fastener and a manual ½-inch-drive tool is suitable. It is not a verified fitment recommendation for every wheel nut, suspension assembly or industrial machine. Check torque, access and fastener specification for the individual job.
For a Roorkee maintenance team standardising tool-crib replenishment, a four-piece pack can be useful when several technicians need the same 21 mm socket, rather than an assortment of other sizes. A procurement request should identify the exact part number 1-88-743, the 21 mm hex opening, the ½-inch drive, manual use, and the required number of four-piece packs. If multiple sizes, depths or drive formats are needed, browse Socket & Socket Sets instead of assuming one size is universal.

Roorkee Delivery, Stock Conditions and GST Invoice

For a Roorkee receiving address, enter the correct delivery pincode on the National Product Page, review the GST-inclusive pack total, and confirm the complete pack quantity and billing details at checkout. Indus MegaMart's generated purchase invoices include the company's GST number; provide the business details required for your procurement records.
An available-stock display of zero does not prevent ordering or payment. Indus MegaMart's stated policy allows orders even when stock is insufficient. If the ordered quantity is within available stock, the delivery window is within seven days. If the order exceeds available stock, including when the displayed stock is zero, the stated delivery window is 7–14 days. Check pincode serviceability and the order details before purchase; displayed national stock does not establish that the product is physically stocked in Roorkee.
Explore the STANLEY brand range and broader Hand Tools category for compatible hand tools. Review the applicable seller and manufacturer warranty, returns and invoice conditions for the actual purchase; the official STANLEY product listing does not establish a fixed warranty period for this exact model.

Frequently Asked Questions

1. Is STANLEY 1-88-743 a 21 mm socket or a ½-inch socket?

Both measurements apply to different features. 21 mm is the fastener-opening size; ½ inch is the square-drive connection for a compatible manual driving tool.

2. How many sockets are included in the Indus MegaMart selling pack?

Indus MegaMart currently lists four identical STANLEY 1-88-743 21 mm sockets per pack. STANLEY's manufacturer product description identifies one individual socket; a retailer's selling pack can contain multiple individual sockets.

3. Does the four-piece pack contain four different socket sizes?

No. It contains four of the same 21 mm six-point socket, not a 17–21 mm assortment or a set with a handle. Check the selling unit if comparing other retailers' single-piece offers.

4. Is the socket six-point or twelve-point?

It is six-point (hexagonal). STANLEY specifies its Maxi-Drive profile, designed to help reduce fastener rounding with the correct size and proper manual operation.

5. What is its published length and D1 dimensions?

The datasheet linked from Indus MegaMart lists 38 mm overall length (L) and 27.70 mm D1 for model 1-88-743. Verify the drawing before using D1 as a clearance measurement. Overall length does not equal internal working depth.

6. Will the 21 mm socket fit my ⅜-inch ratchet?

Not directly. STANLEY 1-88-743 has a ½-inch square-drive connection. Use an appropriately matched manual driver rather than selecting a handle based on the 21 mm fastener size.

7. Is this suitable for an electric or pneumatic impact wrench?

No impact rating is established. STANLEY identifies this model for manual use. For an electric or pneumatic impact wrench, choose a specifically impact-rated socket suitable for that tool and the fastener.

8. Can this model be used on every 21 mm vehicle wheel nut?

Do not assume universal fitment. It may fit a correctly sized 21 mm hex nut, but you must verify the wheel fastener, recess clearance, tool method and torque requirements. An impact tool requires an impact-rated socket instead.

9. Can a Roorkee buyer order when Indus MegaMart shows zero stock?

Yes. Its stated policy accepts orders and payment at zero available stock, with 7–14 days stated for that condition. Check your Roorkee delivery pincode and final order details.

10. Is the displayed price GST-inclusive, and does it cover one or four sockets?

The current National Product Page displays a GST-inclusive price for its four-piece selling pack and shows the corresponding tax breakup. It is not a quoted all-inclusive price for one loose socket. Confirm the live total and quantity before payment.

Order STANLEY 1-88-743 21 mm Standard Socket in Roorkee

Confirm model 1-88-743, 21 mm six-point fastener opening, ½-inch manual square drive, and the pack of four identical sockets. View the current GST-inclusive selling-pack price, enter the receiving pincode in Roorkee, and order the number of packs your team needs on the exact National Product Page.
Check the current price and buy STANLEY 1-88-743 — Pack of 4