Sewing Machine Repair Screwdriver Sets

Chapman #9600 set is the standard of sewing machine repair people and restorers worldwide.  

Our 12 sizes of slotted bits (aka flathead) are straight sided hollow ground bits designed to precisely fit slotted screws. Chapman bits are designed to minimize screw damage and break BEFORE damaging or marring a screw- more information below.

  • #9600 Yellow
  • #9600 Pink
  • #9600 Desert Tan

Chapman Bits Vs. Other Bits

Slotted Bits Designed to Minimize Screw Damage

1. Each Chapman bit is designed for use within a specific torque range. Small bits are designed for less torque, large bits are designed for more torque. Chapman tools and bits are specifically engineered for hand use.

2. Chapman bits are tough and springy, not brittle.We use fine alloy steel heat treated with a black oxide finish. Each bit reaches its specified hardness that is not too hard to shatter or too soft to twist.

3. Our smaller bits, .05", 1/16" 1.5mm, 2.5mm & slotted CM-88, 89, 90, etc. are designed to prevent damage in applications where the screw is more valuable than the bit. When excess torque is applied, our bits are designed to break before marring an irreplaceable screw. If a screw is seated so tightly that the bit starts to bend, stop immediately, additional force will break the bit, mar the piece or rip off the screw head.

4. Our famous Chapman Midget Ratchet provides approximately 4 times the leverage of a large screw driver. The ratchet provides more torque than small screws are designed for, so use gentle but even pressure to loosen small screws. A small size bit can be twisted if sufficient force is applied. Use the knurled ends of our bits or the spinner top to apply finger pressure.

Customer Videos: Chapman tools & Sewing Machines

Customer Reviews

I bought these to work on my very old sewing machine after nearly stripping a couple of screws with a household screw driver. Now I use them for every bit of tinkering that I do. I'm in love with the quality of my Chapman set, the fact that they are made in USA, the sturdiness of the case, and the fact that there's a bit that fits every single screw on my machine almost perfectly. The customer service and shipping times were also great. I will definitely be a lifetime customer. - C. H. Worth the price, this set is so valuable for repairing antique sewing machines - screws are often hard to replace and frozen, these heads are precise and the 3 driver choices are essential for tight spaces. Now I can back out tough screws safely without fear of damage. - M. Krueger This great kit makes working on sewing machines so much easier. Like the versatile choice of handles. Makes it easier to get at those hard to get at areas. - Jane B.I LOVE it! Bought it to work on sewing machines. No more stripped screws, love the leverage I get. Would highly recommend it to anybody that needs precision and a good fit. I plan to order more bits. I appreciate American made also. Thank you, good job! - Holly N.

Quality set that I'm using to service my vintage sewing machines. Hollow ground bits mean no stripped screws. Love the ratchet handle and the little finger turning wheel... - Chris

I LOVE it! Bought it to work on sewing machines. No more stripped screws, love the leverage I get. Would highly recommend it to anybody that needs precision and a good fit. I plan to order more bits. I appreciate American made also. Thank you, good job! - Holly N

Wonderful! I bought these to work on my very old sewing machine after nearly stripping a couple of screws with a household screw driver. Now I use them for every bit of tinkering that I do. I'm in love with the quality of my Chapman set, the fact that they are made in USA, the sturdiness of the case, and the fact that there's a bit that fits every single screw on my machine almost perfectly. The customer service and shipping times were also great. I will definitely be a lifetime customer. - CH

I have had my set for over 30 years and it has always been my go to kit for all my firearms and other projects, when precision screwdriver fit was important and I don't want to damage the fastener. I'm looking for a set for my son who has developed an interest in working on his guns. Thanks Chapman - I love the fact that you are still made in the USA!- Frank H

This great kit makes working on sewing machines so much easier. Like the versatile choice of handles. Makes it easier to get at those hard to get at areas. - Jane B

Quality! Three things you need to know about Chapman: quality, quality, QUALITY!! I first got their ratchet and bits in 2002 (14 years ago!). Still works and perform flawlessly. I used their bits to work on cars, motorcycles, hard drives, computers, around the house, appliances. Whatever you think of they have a bit that fits. Metal quality is top notch, workmanship is top notch. Price is really reasonable too. When you factor in their quality Chapman is simply unbeatable....I am...very, very happy with the quality of the product. After my friends saw my Chapman set they got theirs too. Love the flexibility and the fact that you can choose exactly what you want. In conclusion: very highly recommend, top notch quality, average or below average prices. Price/performance ratio = unbeatable. I have been using hand tools for about 40 years now. Chapman bit are the best I ever had. - Voicu C.