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Product Specifications:
| Item | Lock Washer |
| Class | Not Applicable |
| Dimensional Standards | Asme B18.21.1 |
| Finish | Zinc Plated |
| Fits Bolt Sizes | 3/8" |
| For Screw Size | 3/8" |
| Grade | Non Graded |
| Hardness | Rockwell C40-C50 |
| Inside Dia. | 0.384" |
| Lock Washer Type | External Tooth Lock |
| Material | Steel |
| Material Grade/class | Ungraded |
| Maximum Thickness | 0.032" |
| Outside Dia. | 0.67" |
| Rockwell Hardness | C40 to C50 |
| System Of Measurement | Imperial |
| Thickness | 0.032" |
| Type | External Tooth Lock |
Shipping Info:
| Ship weight (kg) | 0.03 |
| Ship height (cm) | 1.27 |
| Ship length (cm) | 16.99 |
| Ship width (cm) | 16.38 |
| HS code | 7318210090 |
| Country of Origin | TW |
Product Variants
| Product | Model | Fits Bolt Sizes | Inside Dia. | Outside Dia. | Hardness | Thickness | Thickness Tolerance | For Screw Size | Class | Pkg. Qty. | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
U37420.043.0001 | 7/16" | 0.448" | 0.74" | Rockwell C40-C50 | 0.032" | - | 7/16" | Not Applicable | 25 | €3.07 | |
![]() |
U37420.050.0001 | 1/2" | 0.513" | 22/25" | Rockwell C40-C50 | 0.037" | - | 1/2" | Not Applicable | 25 | €4.30 | |
![]() |
U37420.056.0001 | 9/16" | 0.576" | 24/25" | Rockwell C40-C50 | 0.037" | - | 9/16" | Not Applicable | 25 | €5.88 | |
![]() |
U37420.062.0001 | 5/8" | 0.641" | 1.045" | Rockwell C40-C50 | 0.042" | - | 5/8" | Not Applicable | 10 | €3.50 | |
![]() |
U37420.075.0001 | 3/4" | 0.768" | 1.22" | Rockwell C40-C50 | 0.047" | - | 3/4" | Not Applicable | 10 | €5.08 | |
![]() |
M37420.030.0001 | M3 | 3.2 mm | 6 mm | Rockwell C38-C46 | 0.4 mm | - | M3 | Not Applicable | 100 | €6.93 | |
![]() |
M37420.040.0001 | M4 | 4.3 mm | 8 mm | Rockwell C38-C46 | 0.5 mm | - | M4 | Not Applicable | 100 | €7.30 |
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APPROVED VENDOR U37420.037.0001 Lock Washer, 3/8 In Fits Bolt Size, External Tooth Lock, 0.67 In O.D., Zn Plated
€5.09 /pack







