Product Description
Raymond OEM lockwasher (part number RA 772-112), carbon steel, split type, size #10, compatible with #10 thread size fasteners in Raymond electric lift truck assemblies. Manufactured to ASME B18.21.1 standard. No OEM cross-reference numbers available.
Specifications
Material & Construction
| Steel Grade | SAE 1050-C |
| Finish/Coating | Plain |
| Hardness | Rockwell C38–C46 |
Part Numbers
| OEM Part Number | RA 772-112 |
| Manufacturer Part Number | 772-112 |
Frequently Asked Questions
Q: What is the RA 772-112 and what fastener size does it fit?
A: The RA 772-112 is an OEM split-type lock washer from Raymond, sized for number 10 thread fasteners. It prevents fastener loosening due to vibration in Raymond electric lift truck assemblies.
Q: What are the material specifications for the RA 772-112?
A: The RA 772-112 is manufactured from SAE 1050-C carbon steel with a plain finish. It meets ASME B18.21.1 standard specifications with a hardness range of Rockwell C38 to C46, providing durability for vibration-resistant applications.
Q: Is the RA 772-112 manufactured to an industry standard?
A: Yes. The RA 772-112 is manufactured to ASME B18.21.1 standard, which specifies lock washer design, material composition, and performance requirements for split-type lock washers.
Q: What is the difference between a split-type lock washer and other lock washer types?
A: A split-type lock washer (like the RA 772-112) has a continuous slot with ends that exert spring tension against the fastener and surface. This design resists loosening from vibration. Other types include helical and tooth lock washers, which use different locking mechanisms.
Q: Can the RA 772-112 be used with number 8 or number 12 fasteners?
A: No. The RA 772-112 is engineered for number 10 thread size fasteners only. Using it on different thread sizes will not provide proper clamping or vibration resistance. Order the correct SKU for your fastener size.