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Product Specifications:
| Item | Hex Locknut |
| Class | Not Applicable |
| Color | Silver |
| Dimensional Standards | Asme B18.16.6 |
| Finish | Plain |
| Grade | Grade 18-8 |
| Hardness | Rockwell B80-C32 |
| Hex Height | 13/64" |
| Hex Type | Standard Hex Top Lock |
| Hex Width | 9/16" |
| Insert Material | Steel |
| Lock Type | Top Lock Distorted Thread |
| Made In North America | No |
| Material | Stainless Steel |
| Material Grade/class | 18-8 |
| Material Quality Standards | Astm F594, Sae J995 |
| Maximum Temperature | 1000°F |
| Minimum Temperature | -40°F |
| Nut Height | 13/32" |
| Nut Type | Top Lock Distorted Thread |
| Reach Compliant | Yes |
| Removable | Yes |
| Resistance Properties | Chemical Resistant, Corrosion Resistant, High Temperature Resistant, Nonmagnetic, Solvent Resistant |
| Rockwell Hardness | Hrb 65/Hrc 35 |
| Rohs Compliant | Yes |
| System Of Measurement | Imperial |
| Temp. Range | -58°F to +302°F |
| Tensile Strength | 70000 psi |
| Thread Direction | Right Hand |
| Thread Fit | 2B |
| Thread Size | 3/8"-16 |
| Thread Type | Coarse |
| Type | Conical Top Lock |
Shipping Info:
| Ship weight (kg) | 0.33 |
| Ship height (cm) | 1.27 |
| Ship length (cm) | 16.99 |
| Ship width (cm) | 16.38 |
| HS code | 7318160060 |
| Country of Origin | TW |
Product Variants
| Product | Model | Thread Size | Hex Width | Hex Height | Nut Height | Hardness | Temp. Range | Hex Type | Insert Material | Pkg. Qty. | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
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U51915.016.0001 | #8-32 | 11/32" | 5/64" | 11/64" | Rockwell B80-C32 | -58°F to +302°F | Standard Hex Top Lock | Steel | 50 | €66.47 | |
![]() |
U51915.025.0001 | 1/4"-20 | 7/16" | 9/32" | 9/32" | Rockwell B80-C32 | -58°F to +302°F | Standard Hex Top Lock | - | 50 | €28.27 | |
![]() |
U51915.031.0001 | 5/16"-18 | 1/2" | 21/64" | 21/64" | Rockwell B80-C32 | -58°F to +302°F | Standard Hex Top Lock | - | 50 | €37.16 | |
![]() |
U51915.043.0001 | 7/16"-14 | 11/16" | 15/32" | 15/32" | Rockwell B80-C32 | -58°F to +302°F | Standard Hex Top Lock | - | 25 | €112.80 | |
![]() |
U51915.050.0001 | 1/2"-13 | 3/4" | - | 37/64" | Rockwell B80-C32 | -58°F to +302°F | Standard Hex Top Lock | Steel | 10 | €51.84 | |
![]() |
U51915.062.0001 | 5/8"-11 | 15/16" | - | 47/64" | Rockwell B80-C32 | -58°F to +302°F | - | - | 10 | €79.41 | |
![]() |
U51915.075.0001 | 3/4"-10 | 1 1/8" | 53/64" | 53/64" | Rockwell B80-C32 | -58°F to +302°F | Standard Hex Top Lock | - | 5 | €104.42 |
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APPROVED VENDOR U51915.037.0001 Hex Locknut, 3/8 In - 16 Thread Size, Top Lock Distorted Thread, 9/16 In Hex Wd., Gr. 18-8
€138.60 /pack






