---
product_id: 282952384
title: "Starrett L.s. 50420 91b Tap Wrench 23cm l"
brand: "starrett"
price: "FREE"
currency: USD
in_stock: false
category: "Starrett"
url: https://www.desertcart.us/products/282952384-starrett-l-s-50420-91b-tap-wrench-23cm-l
store_origin: US
region: United States of America
---

# Knurled sleeve plunger for smooth control Grips 3/16-1/2" taps securely Durable alloy steel build Starrett L.s. 50420 91b Tap Wrench 23cm l

**Brand:** starrett
**Price:** FREE
**Availability:** ❌ Out of Stock

## Summary

> 🔩 Tap into precision and durability — the wrench that means business.

## Quick Answers

- **What is this?** Starrett L.s. 50420 91b Tap Wrench 23cm l by starrett
- **How much does it cost?** FREE with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/282952384-starrett-l-s-50420-91b-tap-wrench-23cm-l)

## Best For

- starrett enthusiasts

## Why This Product

- Trusted starrett brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Robust alloy steel construction designed for lifetime durability and balanced handling.
- • **Effortless Adjustment:** Knurled sleeve plunger ensures smooth, controlled tightening and release.
- • **Smart Pressure Release:** Internal spring auto-releases pressure to protect tool and maintain consistent operation.
- • **Precision Grip, Zero Slip:** Tempered gripping surfaces lock square & round shanks with confidence.
- • **Versatile Tap Compatibility:** Handles 3/16" to 1/2" taps, perfect for precision threading on prototypes and one-offs.

## Overview

The Starrett 91B Tap Wrench is a 23cm, alloy steel tool engineered for precision tapping with 3/16" to 1/2" taps. Featuring tempered gripping surfaces and a knurled sleeve plunger with automatic pressure release, it offers secure hold, smooth operation, and long-lasting durability—ideal for professionals demanding reliable control on prototype and custom threading tasks.

## Description

The Starrett 91 Tap Wrench is strong and well proportioned. It is nicely finished and the gripping surface is properly tempered. It will firmly hold square or round shanks. It is plunger operated by knurled sleeve, the spring inside the sleeve causes plunger to back off when pressure is removed. 9" (225mm) Length, 3/16-1/2" (4.7-12.7mm) Tap Size. A tap wrench used in combination with a drill tap is the traditional method to tapping (threading) a hole. This traditional method continues to be a preferred tapping method for when precision tapping is required on prototypes, one-off, post processing, and when minimal material exists around the hole. holes in a hole patterns is too significant to include in a machine program. In essence the tool has a basic "T-Wrench" configuration, which uses handles that extend from the center axis of the tap so that additional torque in the tap can be created. Since a tap requires a specific amount of material at a specific dimension in order to create an effective thread, this manual method can provide excellent feedback to the operator as they progress the tap into the thru-hole.

## Features

- Strong Design - Built with a balanced and durable construction that delivers reliable performance and control. The sturdy design ensures long-lasting strength while maintaining proper proportions for comfortable handling and precise gripping.
- Tempered Gripping Surfaces for Secure Hold - Precision-tempered gripping surfaces firmly secure both square and round shanks, providing dependable holding power during adjustment, alignment, or measurement tasks without slipping.
- Knurled Sleeve Plunger Operation - Features a convenient plunger system operated by a knurled sleeve, allowing smooth adjustment and easy operation while providing a firm grip for controlled tightening and release.
- Automatic Pressure Release Mechanism - An internal spring inside the sleeve automatically causes the plunger to back off when pressure is removed, helping protect the tool and ensuring consistent, controlled operation.
- Compatible with Square or Round Shanks - Designed to grip round shanks as well as square ones; however, care should be used when applying pressure to round shanks, as excessive force may damage the moveable V-jaw.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0006J4DN0 |
| ASIN  | B0006J4DN0 |
| Best Sellers Rank | #132,270 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #241 in Open-End Wrenches |
| Brand Name | Starrett |
| Color | Silver |
| Customer Reviews | 4.5 4.5 out of 5 stars (297) |
| Customer reviews | 4.5 4.5 out of 5 stars (297) |
| Date First Available  | 5 September 2012 |
| Department  | mens |
| End Style | Adjustable |
| Finish Types | Polished |
| Global Trade Identification Number | 00049659504200 |
| Head Style | Fixed Square |
| Is Discontinued By Manufacturer  | No |
| Is Non Sparking | No |
| Item Length | 22.9 Centimeters |
| Item Weight | 0.57 Pounds |
| Item model number  | 91B |
| Jaw Capacity | 0.5 Inches |
| Manufacturer | Starrett |
| Manufacturer  | Starrett |
| Manufacturer Part Number | 91B |
| Material Type | Alloy Steel |
| Measurement Standard | SAE |
| Model Number | 91B |
| Number of Items | 1 |
| Number of Packs | 1 |
| Operation Mode | Mechanical |
| Package Quantity | 1 |
| Product Dimensions  | 5 x 24 x 5 cm; 258.55 g |
| Set Name | Starrett 36B |
| UPC | 049659504200 |
| Unit Count | 1.0 Count |
| Wrench Length Style | Standard |

## Product Details

- **Brand:** Starrett
- **Colour:** Silver
- **Item length:** 22.9 Centimeters
- **Item weight:** 0.57 Pounds
- **Material:** Alloy Steel

## Images

![Starrett L.s. 50420 91b Tap Wrench 23cm l - Image 1](https://m.media-amazon.com/images/I/31RfPToMGLL.jpg)

## Available Options

This product comes in different **Size** options.

## Frequently Bought Together

- Starrett Tap Wrench with Tempered Gripping Surfaces - 3/16-1/2" (4.7-12.7mm) Capacity Tap Size, 9" (225mm) Body Length, 5/32-9/32" (4-7mm) Square Shank - 91B
- Starrett Tap Wrench with Tempered Gripping Surfaces - 1/16-1/4" (1.6-6.35mm) Capacity Tap Size, 6" (150mm) Body Length, 3/32-5/32" (2.4-4mm) Square Shank - 91A
- Starrett 174 Tap Wrench for No. 0-14 Taps, 1/4" Square Shank, 3-5/8" Body Length, Firm Grip on Round/Square Shanks, Lightweight, Heat-Treated Surface

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-10-17*