Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

ROTOR CLIP Retaining Ring: Inch, External, Std, 0.042 in Thick, Fits 13/16 in Shaft Dia - Crescent Rings
ROTOR CLIPCrescent Rings

ROTOR CLIP Retaining Ring: Inch, External, Std, 0.042 in Thick, Fits 13/16 in Shaft Dia

The ROTOR CLIP C-81ST PA is an inch-series external standard retaining ring, type Crescent Ring, designed to fit a 13/16 in shaft diameter. Made of steel with a thickness of 0.042 in, this ring is supplied in a pack…

SKU 3G-OTH-685562

Also listed as: C81STPA · C 81ST PA · C-81ST-PA

Brand
ROTOR CLIP
Item
Retaining Ring: Inch, External, Std, 0.042 in Thick, Fits 13/16 in Shaft Dia
Category
Crescent Rings
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

ROTOR CLIP
Manufacturer Part Number
C-81ST PA
Type
External, Std, Fits 13/16 in Shaft Dia, Steel, 25 PK
Thick
0.042 in

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

ROTOR CLIP Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The ROTOR CLIP C-81ST PA is an inch-series external standard retaining ring, type Crescent Ring, designed to fit a 13/16 in shaft diameter. Made of steel with a thickness of 0.042 in, this ring is supplied in a pack of 25 for industrial shaft retention applications.

Frequently Asked Questions

What is a ROTOR CLIP C-81ST PA retaining ring used for?

The ROTOR CLIP C-81ST PA is an inch-series external standard crescent retaining ring used to secure components on a 13/16 in shaft. It prevents axial movement in industrial assemblies such as gearboxes, pumps, and conveyors, providing reliable shaft retention in demanding environments.

What are the specifications of the ROTOR CLIP C-81ST PA?

The ROTOR CLIP C-81ST PA is an external standard crescent retaining ring for a 13/16 in shaft diameter. It is 0.042 in thick, made of steel, and supplied in a pack of 25. The manufacturer part number is C-81ST PA.

Where to buy ROTOR CLIP C-81ST PA retaining rings worldwide?

3G Electric supplies the ROTOR CLIP C-81ST PA retaining ring to customers worldwide. We handle full logistics and customs clearance, sourcing genuine industrial parts across 14 departments. Contact us for availability and delivery to your location.

How to install a ROTOR CLIP C-81ST PA crescent ring?

To install the ROTOR CLIP C-81ST PA crescent ring, use retaining-ring pliers designed for external rings. Compress the ring evenly and slide it into the shaft groove. Ensure the ring seats fully and verify it is secure before applying load. Always follow manufacturer guidelines for safe installation.

ROTOR CLIP Products

3G Electric supplies ROTOR CLIP crescent rings. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

More from ROTOR CLIP

View all ROTOR CLIP parts
Retaining Ring: Inch, External, Std, 0.062 in Thick, Fits 1 5/8 in Shaft Dia, Steel, 5 PK (MPN C-162ST PA)
ROTOR CLIP
Retaining Ring: Inch, External, Std, 0.062 in Thick, Fits 1 5/8 in Shaft Dia, Steel, 5 PK (MPN C-162ST PA)
Retaining Ring: Inch, External, Std, 0.05 in Thick, Fits 1 1/4 in Shaft Dia, Steel, 25 PK (MPN C-125ST PA)
ROTOR CLIP
Retaining Ring: Inch, External, Std, 0.05 in Thick, Fits 1 1/4 in Shaft Dia, Steel, 25 PK (MPN C-125ST PA)
Retaining Ring: Metric, External, Std, 0.7 mm Thick, Fits 6 mm Shaft Dia, Stainless Steel, 25 PK (MPN DC-6SG)
ROTOR CLIP
Retaining Ring: Metric, External, Std, 0.7 mm Thick, Fits 6 mm Shaft Dia, Stainless Steel, 25 PK (MPN DC-6SG)
Retaining Ring: Metric, External, Std, 1 mm Thick, Fits 14 mm Shaft Dia, Stainless Steel, 5 PK (MPN DC-14SS)
ROTOR CLIP
Retaining Ring: Metric, External, Std, 1 mm Thick, Fits 14 mm Shaft Dia, Stainless Steel, 5 PK (MPN DC-14SS)
Retaining Ring: Inch, External, Std, 0.035 in Thick, Fits 1/2 in Shaft Dia, Steel, Not Graded, 50 PK (MPN C-50ST PA)
ROTOR CLIP
Retaining Ring: Inch, External, Std, 0.035 in Thick, Fits 1/2 in Shaft Dia, Steel, Not Graded, 50 PK (MPN C-50ST PA)
Retaining Ring: Inch, External, Std, 0.035 in Thick, Fits 5/8 in Shaft Dia, Stainless Steel, 10 PK (MPN C-62SS)
ROTOR CLIP
Retaining Ring: Inch, External, Std, 0.035 in Thick, Fits 5/8 in Shaft Dia, Stainless Steel, 10 PK (MPN C-62SS)
Retaining Ring: Metric, External, Std, 0.8 mm Thick, Fits 8 mm Shaft Dia, Steel, Not Graded, 50 PK (MPN DC-8ST PD)
ROTOR CLIP
Retaining Ring: Metric, External, Std, 0.8 mm Thick, Fits 8 mm Shaft Dia, Steel, Not Graded, 50 PK (MPN DC-8ST PD)
Retaining Ring: Inch, External, Std, 0.025 in Thick, Fits 15/64 in Shaft Dia, Steel, 50 PK (MPN C-23ST ZD)
ROTOR CLIP
Retaining Ring: Inch, External, Std, 0.025 in Thick, Fits 15/64 in Shaft Dia, Steel, 50 PK (MPN C-23ST ZD)