Sturtevant Richmont offers different ratchets to meet the needs of different industries. In addition to the normal industrial assembly, tool ratchets we also offer "Hold and Drive" ratchets for aerospace. 

Scrolling down this page provides you with a good look at our ratchets as well as the ratchet renewal kits. 

All of our ratchets maintain our common centerlines

Ordering Information and Specifications

Dimensions refer to the illustrated key.     SDRT

1 7/16"  Inch Common Centerline                  36.5 mm Common Centerline                                                  


Part NumberModel DesignationSquare  Drive Size (in.)Fatigue Torque Rating (in lb)A (inches)B (inches)C (inches)D (inches)E (inches)
809504 SDRT - 1/4 1/4 250 2 23/64 31/32 25/32 3/4 11/16
809505 SDRT - 3/8 3/8 1250 2 35/64 1 11/32 1 1/16 1 3/4
809506 SDRT - 1/2 1/2 2500 2 7/8 1 7/8 1 27/64 1 1/4 13/16

3 7/8"  Common Centerline       98.4 mm Common Centerline

Part NumberModel DesignationSquare Drive Size (in.)Torque Rating (in lb)A (inches)B (inches)C (inches)D (inches)E (inches)
809507 SDRT - 3/4 3/4 4800 5  47/64 2 11/16 1 63/64 1 1/2 1

 Hold and Drive Ratchets

Aerospace assemblies sometimes use a special fastener to ensure there are no gaps between surfaces. 

Sturtevant Richmont creates these ratchets using our existing designs. Holes are precision drilled to ensure flawless use while maintaining structural integrity.

Plus you get the benefit of placing this head at the end of many different Sturtevant Richmont torque wrenches. Like all of our heads, our ratchets maintain the common centerline. 

Hold and Drive Ratchets

Hold and Drive Ordering Information

Part Number Model  Designation Drive Size  (in.) Hole Size  (in.) Hex Key Size
853246  SDRT 3/8 5/32  1/8 or 3 mm
853364  SDRT  1/2 5/32  1/8 or 3 mm
853590  SDRT 1/4 9/64  1/8 or 3 mm
853619  SDRT 1/4 1/8  3/32  or 2mm 
853656  SDRT  3/8 1/8  3/32  or 2mm 

 All ratchets wear out with use. We have ratchet renewal kits that are quick and easy to install.


Socket Lock Pin

When you need additional security with impact sockets ensuring a socket stays on a wrench, the Socket Lock Pin series provides a solid solution. 

Engineered for strength and built for durability. 

Part Number Model Designation Drive  Size
853304 SDRT 1/4 SOC LOCK PIN 1/4 inch
853305 SDRT 3/8 SOC LOCK PIN 3/8 inch
853548 SDRT 1/2 SOC LOCK PIN 1/2 inch

Small Ratchet Body With  Larger Drive Size

These interchangeable head ratchets provide more power in small places. You get the access of a smaller ratchet body with the power of a larger square drive. 

Part NumberDescriptionCapacity
853752 SDRT 1/4" body with 3/8" Square Drive 250 in-lbs
853395 SDRT 3/8" body with 1/2" Square Drive 1250 in-lbs
809508 SDRT 1/2" body with 3/4" Square Drive 2500 in-lbs

 These are ideal when you need a larger drive square in a smaller ratchet body.


Ratchet Renewal Kit

Ratchet Renewal KitSooner or later even the best tools wear out. We created the Ratchet Renewal Kit for those times when your ratchet doesn't quite work as smoothly as it once did.

Ratchet Renewal Kits range in size from 1/4 inch drive up to 3/4 inch drive. It is important to order the size that corresponds to the one you are replacing. Kit part numbers are assigned by spindle size. In addition to a new spindle, the kit includes a reversing pin, washer, retaining ring, spring, and ball. 

IMPORTANT: When replacing any part of a ratchet, all parts of the ratchet renewal kit MUST be used. While the parts may look OK to the eye, don't be tempted to take the shortcut. 

Tools required to install a new Ratchet Renewal Kit include:

  • Snap ring pliers
  • Small flat-head screwdriver
  • Tweezers
  • Molybdenum Disulfide
  • Vice or stand


Ordering Information for Ratchet Renewal Kits for Ratcheting Wrenches and SDRT Heads. 

Part Number Model Designation Use With Ratchet
816998  1/4" Ratchet Renewal Kit 809504
816958  3/8" Ratchet Renewal Kit 809505
816956  1/2" Ratchet Renewal Kit 809506
816999  3/4" Ratchet Renewal Kit 809507
816959 3/8" Spindle With 1/2" Drive Renewal Kit 853395
816957 1/2" Spindle With 3/4" Drive Renewal Kit 809508
816997 Double 3/4" Square Drive Renewal Kit *See Note Below

 *The Double 3/4" Square Drive ratchet head fits on these three products: 853400 (custom-built tool) as well as the 830081 and 830082-micrometer adjustable wrenches. 

Need a ratchet renewal kit for other ratchets that we produce?



Need Assistance?  Worldwide call  +1-847-455-8677 



 Sturtevant Richmont tools are proudly made in the USA by highly capable hands.